Tag Archives: contact bearing

China Best Sales Low Price CZPT CZPT AC Series Contact Angle 25 7022AC 7228AC 7211acm 7307AC 7307acm 7316acm 7321acm Single Row Angular Contact Ball Bearing for Auto Parts connecting rod bearing

Product Description

PRODUCT PICTURES


 OUR SERVICES

We can provide manufacturing capabilities and services of regular bearings for you, or customized non-standard bearings as you required.

 BEARING:
  — Dimensions
  — Material
  — Tolerance standard

APPEARANCE:
  — Logo (Laser Marking)
  — Package Design

40+ YEARS EXPERIENCE 
CONTINUOUS AND STABLE DELIVERY OF PRODUCTS.

With over 40 years experience of the bearing manufacturing, we know how to make good bearings with less cost consistently and efficiently.

We use advanced CNC turning, grinding, and superfinishing machines to ensure high, stable, and accurate machining.  All of your goods, from the most economical category, to the highest rated category, will always be manufactured precisely to the standards you require.

OWN HEAT TREATMENT 
CONTROALLABLE COST AND QUALITY.

Heat treatment is 1 of the crucial processes to ensure high performance of bearing materials. Compared with other manufacturers, we can produce higher quality bearings at smaller cost, with a more flexible and controllable production schedule, and in a shorter time. 

We have 6 heat treatment production lines.

Bearings are heated uniformly, with small deformation and little/no oxidized decarburization, which can make them have high hardness, high fatigue resistance, good wear resistance, dimensional stability, and excellent mechanical strength.
 

OUTSTXIHU (WEST LAKE) DIS.  QUALITY
LOW NOISE, LOW FRICTION AND LONG LIFE.

All our products are characterized by low noise, low friction and long life.  This is due to our attention to the roundness, waviness and surface roughness of bearing raceway.

Our products fully meets the requirements of national and international standards accorind to the testing result of
roughness, roundness, hardness, vibration noise, vibration velocity.

PACKING
PACKAGING THAT HELPS SELL.

1, Inner package
   Corrosion and Dust Proof PE plastic film  / bag packing + Tube packing, or Wrapping  tape for larger bearings.

2, Corrugated Individual Box
   Our attractive sales-helpful “3-JOYS” package, or as the design of your package.
3, Outer package
  Corrugated carton + Wooden pallet 

MODERN WELL-ORGANIZED WAREHOUSE

  · Constant temperature (20°C) and humidity (RH 52%) warehouse
  · Hundreds of models on hand, short delivery time.
 

HONOR & SYSTEM CERTIFICATES

EXHIBITION

SAMPLES POLICY 

 FREE SAMPLES AND SHIPPING

 We are happy to send you free samples of our bearings for field   testing. All transportation costs will be paid by us.

 Please note: Depending on the model and value of samples,   this policy may not apply!

 Please contact our sales staff for details.

TRANSPORTATION
FASTEST DELIVERY TO CUSTOMERS

CUSTOMERS FEEDBACK

PAYMENT TERMS 
To facilitate your payment, we offer a variety of options! 

    
 

FAQ

1, About the lead time.
 
This depends on several factors, like Is the production schedule tight? Is there a corresponding model in stock, and is there enough of this model in stock? How many pcs of that model would be ordered?
Simply speaking, based on a 20′ GP container load:

If the model your Preferred is Sufficient stock Lead Time
Regular models YES Within 7 days
Regular models NO Within 30 days
Non-regular model NO About 50 days

For accurate estimate, please contact with our sale stuff. Thanks.

2, Minimum order quantity. 
  
Even just ONE piece of bearing is ok for us.

  
3, If you don’t know which model is the right choice…
  
We would like to give you some advise if you like, according to the real situation and demand of your local market. Our purpose is to help you to get proper and right models for your customers, so that you would make a better sales and income finally.

4, Factory Inspection

We surely would welcome you or your representatives to come to our plants or working offices to take a good look and chat with our hardworking CZPT employees. Ask our sales stuff and she/he will arrange that for you.

OPTIONS OF SPECIFICATION AND STHangZhouRD
 

Subject Symbol Description
Sealing & Sealing type Z Metal shield on 1 side.
ZZ Metal shields on both sides.
RS Rubber seal on 1 side.
2RS Rubber seals on both sides.
ZNR Shield on 1 side, snap ring groove in the outer ring, with snap ring on the opposite side of the shield
2ZNR Shield on both sides, snap ring groove in the outer ring, with snap ring
ZNBR Shield on 1 side, snap ring groove in the outer ring, with snap ring on the same side as the shield
Cage Materials J Pressed steel cages
M Solid brass cage
F Solid cage made from steel or iron
Y Pressed brass cages.
T Laminated phenolic cages.
TN Polyamide cages
TH Glass-fiber reinforced phenolic resin cages.
TV Polyamide cage
Cage Designs P Window-type cage
H Claw-type cage
A Cage guided on the bearing outer ring
B Cage-guided on the bearing inner ring
S Cage with lubricating slots in the guiding surfaces
D Carbonitriding cage
W Welded cage
R Riveted Cage
Cage Types N/A Claw-type cage
Ribbon cage
Crown cage
Sunflower cage
Tapered cage
Tolerances PN(P0) Bearings in standard tolerance
P6 Tighter tolerance than standard bearings
P5 Tolerance tighter than P6
P4 Tolerance tighter than P5
P2 Tolerance tighter than P4
Contact Angle C Contact angle 15˚.
AC Contact angle 25˚.
CA Contact angle 20˚.
E Contact angle 35˚.
B Contact angle 40˚.
Bearing Sets DB Two bearings: back-to-back.
DF Two bearings: face-to-face.
DT Two bearings: in tandem.
TBT Three bearings: tandem and back-to-back.
TFT Three bearings: tandem and face-to-face.
QFC Four bearings: tandem and face-to-face.
DB Two bearings: back-to-back.
DF Two bearings: face-to-face.

PRODUCT PARAMETERS

This tech sheet may not contain all or every piece of information you want to know. Please contact our sales staff to obtain or compare the information.
 

Designation Boundary Dimension (mm) Limiting Speed (rpm) Load Rating (Kn) Weight
 Designation Inner Diameter
(d)		 Outside Diameter
(D)		 Width
(B)		 Grease Lubrication Oil Lubrication Dynamic Load
(cr)		 Static Load
(cor)		 Weight
(kg)
7200C 10 30 9 18000 26000 5.81 2.93 0.032
7200AC 10 30 9 18000 26000 5.5 2.85 0.032
7200B 10 30 9 16000 25000 5.3 2.7 0.032
7201C 12 32 10 17000 24000 7.3 3.4 0.039
7201AC 12 32 10 17000 24000 7.09 3.3 0.039
7201B 12 32 10 15000 23000 6.9 3.2 0.039
7202C 15 35 11 16000 22000 8.6 4.5 0.048
7202AC 15 35 11 16000 22000 8.3 4.3 0.048
7202B 15 35 11 15000 21000 7.9 4.2 0.048
7203C 17 40 12 15000 20000 10.8 6.1 0.069
7203AC 17 40 12 15000 20000 10.5 5.6 0.069
7203B 17 40 12 14000 19000 9.9 5.5 0.069
7204C 20 47 14 13000 18000 15.5 8.9 0.110
7204AC 20 47 14 13000 18000 15 8.5 0.110
7204B 20 47 14 12000 16000 13.4 7.6 0.110
7205C 25 52 15 11000 16000 16.5 10 0.130
7205AC 25 52 15 11000 16000 15.8 9.7 0.130
7205B 25 52 15 10000 14000 14.8 9.3 0.130
7206C 30 62 16 9000 13000 23 14.7 0.217
7206AC 30 62 16 9000 13000 22.1 13.5 0.217
7206B 30 62 16 8500 12000 20.5 13.5 0.217
7207C 35 72 17 8000 11000 30.3 20 0.313
7207AC 35 72 17 8000 11000 29.2 18 0.313
7207B 35 72 17 7500 10000 28.3 14.8 0.313
7208C 40 80 18 7500 10000 38.4 26.3 0.402
7208AC 40 80 18 7500 10000 36.8 25.4 0.402
7208B 40 80 18 6700 9000 34.5 23.8 0.402
7209C 45 85 19 6700 9000 40.4 29.3 0.460
7209AC 45 85 19 6700 9000 38.6 28.1 0.460
7209B 45 85 19 6300 8500 34 24.6 0.460
7210C 50 90 20 6300 8500 42.8 31.3 0.510
7210AC 50 90 20 6300 8500 40.8 30.1 0.510
7210B 50 90 20 5600 8000 40.4 25.6 0.510
7211C 55 100 21 5600 7000 53.2 39.9 0.680
7211AC 55 100 21 5600 7000 50.8 38.2 0.680
7211B 55 100 21 5300 7000 46.3 36 0.680
7212C 60 110 22 5300 7000 61 48.2 1.571
7212AC 60 110 22 5300 7000 58.1 46 1.571
7212B 60 110 22 4800 6300 56.1 44.3 1.571
7213C 65 120 23 4800 6300 69.8 54.4 1.090
7213AC 65 120 23 4800 6300 66.6 52.1 1.090
7213B 65 120 23 4300 6000 65.7 50.2 1.090
7214C 70 125 24 4500 5800 72.8 59.7 1.180
7214AC 70 125 24 4500 5800 69.4 57 1.180
7214B 70 125 24 4000 5600 70.4 56.3 1.180
7215C 75 130 25 4300 5600 79.2 65.6 1.320
7215AC 75 130 25 4300 5600 75.3 62.8 1.320
7215B 75 130 25 3800 5300 68.6 58.2 1.320
7216C 80 140 26 4000 5300 92.5 66.2 1.570
7216AC 80 140 26 4000 5300 91.3 65.1 1.570
7216B 80 140 26 4000 5300 78.7 65.7 1.570
7217C 85 150 28 3800 5000 99.7 84.6 2.571
7217AC 85 150 28 3800 5000 94.9 80.8 2.571
7217B 85 150 28 3600 4800 83.2 74.1 2.571
7218C 90 160 30 3600 4800 128 111.7 2.470
7218AC 90 160 30 3600 4800 122 106.5 2.470
7218B 90 160 30 3200 4300 107.6 92.4 2.470
7219C 95 170 32 3400 4500 134.6 112.2 3.571
7219AC 95 170 32 3400 4500 128.4 107.8 3.571
7219B 95 170 32 3000 4000 121.4 106.7 3.571
7220C 100 180 34 3200 4300 148 125 3.620
7220AC 100 180 34 3200 4300 142 120.6 3.620
7220B 100 180 34 2800 3800 140 102.5 3.620
7221C 105 190 36 3000 4000 166.6 138.6 4.290
7221AC 105 190 36 3000 4000 159 135.1 4.290
7221B 105 190 36 2800 3800 143.3 128.5 4.290
7222C 110 200 38 2800 3800 184.7 154.8 5.030
7222AC 110 200 38 2800 3800 176.3 151.2 5.030
7222B 110 200 38 2400 3400 153.8 144.3 5.030
7224C 120 215 40 2400 3400 203.1 178.4 7.080
7224AC 120 215 40 2400 3400 193.6 170.9 7.080
7224B 120 215 40 2200 3200 165.4 161.4 7.080
7226C 130 230 40 2000 3000 206.6 209.2 8.100
7226AC 130 230 40 2000 3000 196.4 200.1 8.100
7226B 130 230 40 1800 2800 170.8 174.2 8.100
7228C 140 250 42 2000 2800 227.2 238.3 9.950
7228AC 140 250 42 2000 2800 216.9 227.4 9.950
7228B 140 250 42 1800 2600 212.2 197.3 9.950
7232AC 160 290 48 1700 2400 250 288 15.49
7234AC 170 310 52 1600 2200 281 341 19.69
7236AC 180 320 52 2200 2700 293 362 20.26
7238AC 190 340 55 2000 2500 303 390 24.31
7240AC 200 360 58 1300 1800 343 449 28.82
7244AC 220 400 65 1100 1600 358 482 33.60
7248AC 240 440 72 1500 1800 403 595 51.8

 

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Contact Angle: 25°
Aligning: Aligning Bearing
Separated: Unseparated
Rows Number: Single
Load Direction: Radial Bearing
Material: Bearing Steel
Samples:
US$ 5/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

ball bearing

What are the Challenges Associated with Noise Reduction in Ball Bearings?

Noise reduction in ball bearings is a crucial consideration, especially in applications where noise levels must be minimized for operational efficiency and user comfort. While ball bearings are designed to operate smoothly, there are several challenges associated with reducing noise in their operation:

  • Vibration:

Vibration generated by the movement of rolling elements and raceways can lead to noise. Even minor irregularities in bearing components or the mounting system can cause vibration that translates into audible noise.

  • Bearing Type and Design:

The type and design of the ball bearing can impact noise generation. For example, deep groove ball bearings are known for their quiet operation, while angular contact bearings can generate more noise due to their higher contact angles.

  • Lubrication:

Improper or inadequate lubrication can result in increased friction and wear, leading to noise. Choosing the right lubricant and maintaining proper lubrication levels are essential for reducing noise in ball bearings.

  • Bearing Clearance and Preload:

Incorrect clearance or preload settings can lead to noise issues. Excessive clearance or inadequate preload can cause the rolling elements to impact the raceways, resulting in noise during rotation.

  • Material and Manufacturing Quality:

The quality of materials and manufacturing processes can affect noise levels. Inconsistent or low-quality materials, improper heat treatment, or manufacturing defects can lead to noise generation during operation.

  • Surface Finish:

The surface finish of the rolling elements and raceways can impact noise. Rough surfaces can generate more noise due to increased friction and potential irregularities.

  • Sealing and Shielding:

Seals and shields that protect bearings can influence noise levels. While they are necessary for contamination prevention, they can also cause additional friction and generate noise.

  • Operating Conditions:

External factors such as temperature, speed, and load can influence noise levels. High speeds or heavy loads can amplify noise due to increased stress on the bearing components.

  • Wear and Deterioration:

As ball bearings wear over time, noise levels can increase. Worn components or inadequate lubrication can lead to more significant noise issues as the bearing operates.

To address these challenges and reduce noise in ball bearings, manufacturers and engineers employ various techniques, such as optimizing design, selecting suitable bearing types, using proper lubrication, maintaining accurate preload settings, and ensuring high-quality materials and manufacturing processes. Noise reduction efforts are essential to improve overall product quality, meet noise regulations, and enhance user experience in various applications.

ball bearing

How do Temperature and Environmental Conditions Affect the Performance of Ball Bearings?

Temperature and environmental conditions have a significant impact on the performance and longevity of ball bearings. The operating environment can influence factors such as lubrication effectiveness, material properties, and overall bearing behavior. Here’s how temperature and environmental conditions affect ball bearing performance:

  • Lubrication:

Temperature variations can affect the viscosity and flow characteristics of lubricants. Extreme temperatures can cause lubricants to become too thin or too thick, leading to inadequate lubrication and increased friction. In high-temperature environments, lubricants can degrade, reducing their effectiveness.

  • Material Properties:

Temperature changes can alter the material properties of the bearing components. High temperatures can lead to thermal expansion, affecting bearing clearances and potentially causing interference between components. Extreme cold temperatures can make materials more brittle and prone to fracture.

  • Clearance Changes:

Temperature fluctuations can cause changes in the internal clearance of ball bearings. For instance, at high temperatures, materials expand, leading to increased clearance. This can affect bearing performance, load distribution, and overall stability.

  • Corrosion and Contamination:

Harsh environmental conditions, such as exposure to moisture, chemicals, or abrasive particles, can lead to corrosion and contamination of bearing components. Corrosion weakens the material, while contamination accelerates wear and reduces bearing life.

  • Thermal Stress:

Rapid temperature changes can result in thermal stress within the bearing components. Differential expansion and contraction between the inner and outer rings can lead to stress and distortion, affecting precision and bearing integrity.

  • Noise and Vibration:

Temperature-related changes in material properties and internal clearances can influence noise and vibration levels. Extreme temperatures can lead to increased noise generation and vibration, affecting the overall operation of machinery.

  • Lubricant Degradation:

Environmental factors like humidity, dust, and contaminants can lead to premature lubricant degradation. Oxidation, moisture absorption, and the presence of foreign particles can compromise the lubricant’s performance and contribute to increased friction and wear.

  • Seal Effectiveness:

Seals and shields that protect bearings from contaminants can be affected by temperature fluctuations. Extreme temperatures can lead to seal hardening, cracking, or deformation, compromising their effectiveness in preventing contamination.

  • Choosing Appropriate Bearings:

When selecting ball bearings for specific applications, engineers must consider the expected temperature and environmental conditions. High-temperature bearings, bearings with specialized coatings, and those with enhanced sealing mechanisms may be necessary to ensure reliable performance.

Overall, understanding the impact of temperature and environmental conditions on ball bearing performance is crucial for proper bearing selection, maintenance, and ensuring optimal operation in diverse industries and applications.

ball bearing

What are the Different Components that Make up a Typical Ball Bearing?

A typical ball bearing consists of several essential components that work together to reduce friction and support loads. Here are the main components that make up a ball bearing:

  • Outer Ring:

The outer ring is the stationary part of the bearing that provides support and houses the other components. It contains raceways (grooves) that guide the balls’ movement.

  • Inner Ring:

The inner ring is the rotating part of the bearing that attaches to the shaft. It also contains raceways that correspond to those on the outer ring, allowing the balls to roll smoothly.

  • Balls:

The spherical balls are the rolling elements that reduce friction between the inner and outer rings. Their smooth rolling motion enables efficient movement and load distribution.

  • Cage or Retainer:

The cage, also known as the retainer, maintains a consistent spacing between the balls. It prevents the balls from touching each other, reducing friction and preventing jamming.

  • Seals and Shields:

Many ball bearings include seals or shields to protect the internal components from contaminants and retain lubrication. Seals provide better protection against contaminants, while shields offer less resistance to rotation.

  • Lubricant:

Lubrication is essential to reduce friction, wear, and heat generation. Bearings are typically filled with lubricants that ensure smooth movement between the balls and raceways.

  • Flanges and Snap Rings:

In some designs, flanges or snap rings are added to help position and secure the bearing in its housing or on the shaft. Flanges prevent axial movement, while snap rings secure the bearing radially.

  • Raceways:

Raceways are the grooved tracks on the inner and outer rings where the balls roll. The shape and design of the raceways influence the bearing’s load-carrying capacity and performance.

  • Anti-Friction Shield:

In certain high-speed applications, a thin anti-friction shield can be placed between the inner and outer rings to minimize friction and heat generation.

These components work together to enable the smooth rolling motion, load support, and reduced friction that characterize ball bearings. The proper design and assembly of these components ensure the bearing’s optimal performance and longevity in various applications.

China Best Sales Low Price CZPT CZPT AC Series Contact Angle 25 7022AC 7228AC 7211acm 7307AC 7307acm 7316acm 7321acm Single Row Angular Contact Ball Bearing for Auto Parts connecting rod bearingChina Best Sales Low Price CZPT CZPT AC Series Contact Angle 25 7022AC 7228AC 7211acm 7307AC 7307acm 7316acm 7321acm Single Row Angular Contact Ball Bearing for Auto Parts connecting rod bearing
editor by CX 2024-05-02

China Hot selling High Rigidity Axial-Radial Load Capacity Zkldf260 Axial Angular Contact Ball Bearing carrier bearing

Product Description

ZKLDF260 Axial angular contact ball bearing Introduction:

ZKLDF260 Axial angular contact ball bearing are axial and radial combined  bearings, which is fixed by a bidirectional thrust bearing and a centripetal-guided bearing. They can support radial loads, axial loads from both directions and tilting moments free from clearance. For the convenienience of transportation and fixing,two or 3 symmetrical  screws are fastened to the 2 rings in oder to prevent rollers and rings generating collisions which influence bearing accuracy.
ZKLDF260 Axial angular contact ball bearing Display:
/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Rolling Body: Roller Bearings
The Number of Rows: Single
Outer Dimension: Large (200-430mm)
Material: Bearing Steel
Spherical: Non-Aligning Bearings
Load Direction: Axial Bearing
Samples:
US$ 180/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

ball bearing

How does Preload Affect the Performance and Efficiency of Ball Bearings?

Preload is a crucial factor in ball bearing design that significantly impacts the performance, efficiency, and overall behavior of the bearings in various applications. Preload refers to the intentional axial force applied to the bearing’s rolling elements before it is mounted. This force eliminates internal clearance and creates contact between the rolling elements and the raceways. Here’s how preload affects ball bearing performance:

  • Reduction of Internal Clearance:

Applying preload reduces the internal clearance between the rolling elements and the raceways. This eliminates play within the bearing, ensuring that the rolling elements are in constant contact with the raceways. This reduced internal clearance enhances precision and reduces vibrations during operation.

  • Increased Stiffness:

Preloaded bearings are stiffer due to the elimination of internal clearance. This increased stiffness improves the bearing’s ability to handle axial and radial loads with higher accuracy and minimal deflection.

  • Minimized Axial Play:

Preload minimizes or eliminates axial play within the bearing. This is especially important in applications where axial movement needs to be minimized, such as machine tool spindles and precision instruments.

  • Enhanced Rigidity:

The stiffness resulting from preload enhances the bearing’s rigidity, making it less susceptible to deformation under load. This is critical for maintaining precision and accuracy in applications that require minimal deflection.

  • Reduction in Ball Slippage:

Preload reduces the likelihood of ball slippage within the bearing, ensuring consistent contact between the rolling elements and the raceways. This leads to improved efficiency and better load distribution.

  • Improved Running Accuracy:

Preloading enhances the running accuracy of the bearing, ensuring that it maintains precise rotational characteristics even under varying loads and speeds. This is essential for applications requiring high accuracy and repeatability.

  • Optimized Performance at High Speeds:

Preload helps prevent skidding and slipping of the rolling elements during high-speed operation. This ensures that the bearing remains stable, reducing the risk of noise, vibration, and premature wear.

  • Impact on Friction and Heat Generation:

While preload reduces internal clearance and friction, excessive preload can lead to higher friction and increased heat generation. A balance must be struck between optimal preload and minimizing friction-related issues.

  • Application-Specific Considerations:

The appropriate amount of preload depends on the application’s requirements, such as load, speed, accuracy, and operating conditions. Over-preloading can lead to increased stress and premature bearing failure, while under-preloading may result in inadequate rigidity and reduced performance.

Overall, preload plays a critical role in optimizing the performance, accuracy, and efficiency of ball bearings. Engineers must carefully determine the right preload level for their specific applications to achieve the desired performance characteristics and avoid potential issues related to overloading or inadequate rigidity.

ball bearing

How do Temperature and Environmental Conditions Affect the Performance of Ball Bearings?

Temperature and environmental conditions have a significant impact on the performance and longevity of ball bearings. The operating environment can influence factors such as lubrication effectiveness, material properties, and overall bearing behavior. Here’s how temperature and environmental conditions affect ball bearing performance:

  • Lubrication:

Temperature variations can affect the viscosity and flow characteristics of lubricants. Extreme temperatures can cause lubricants to become too thin or too thick, leading to inadequate lubrication and increased friction. In high-temperature environments, lubricants can degrade, reducing their effectiveness.

  • Material Properties:

Temperature changes can alter the material properties of the bearing components. High temperatures can lead to thermal expansion, affecting bearing clearances and potentially causing interference between components. Extreme cold temperatures can make materials more brittle and prone to fracture.

  • Clearance Changes:

Temperature fluctuations can cause changes in the internal clearance of ball bearings. For instance, at high temperatures, materials expand, leading to increased clearance. This can affect bearing performance, load distribution, and overall stability.

  • Corrosion and Contamination:

Harsh environmental conditions, such as exposure to moisture, chemicals, or abrasive particles, can lead to corrosion and contamination of bearing components. Corrosion weakens the material, while contamination accelerates wear and reduces bearing life.

  • Thermal Stress:

Rapid temperature changes can result in thermal stress within the bearing components. Differential expansion and contraction between the inner and outer rings can lead to stress and distortion, affecting precision and bearing integrity.

  • Noise and Vibration:

Temperature-related changes in material properties and internal clearances can influence noise and vibration levels. Extreme temperatures can lead to increased noise generation and vibration, affecting the overall operation of machinery.

  • Lubricant Degradation:

Environmental factors like humidity, dust, and contaminants can lead to premature lubricant degradation. Oxidation, moisture absorption, and the presence of foreign particles can compromise the lubricant’s performance and contribute to increased friction and wear.

  • Seal Effectiveness:

Seals and shields that protect bearings from contaminants can be affected by temperature fluctuations. Extreme temperatures can lead to seal hardening, cracking, or deformation, compromising their effectiveness in preventing contamination.

  • Choosing Appropriate Bearings:

When selecting ball bearings for specific applications, engineers must consider the expected temperature and environmental conditions. High-temperature bearings, bearings with specialized coatings, and those with enhanced sealing mechanisms may be necessary to ensure reliable performance.

Overall, understanding the impact of temperature and environmental conditions on ball bearing performance is crucial for proper bearing selection, maintenance, and ensuring optimal operation in diverse industries and applications.

ball bearing

What are the Primary Benefits of Using Ball Bearings in Machinery and Equipment?

Ball bearings offer several primary benefits when used in machinery and equipment. Their design and functionality provide advantages that contribute to the efficient and reliable operation of various applications. Here are the key benefits:

  • Reduced Friction:

One of the primary benefits of ball bearings is their ability to minimize friction between moving parts. The rolling motion of the balls reduces the contact area and sliding friction, leading to smoother operation and less energy loss due to frictional heating.

  • Efficient Load Support:

Ball bearings are engineered to support both radial and axial loads, making them versatile for applications with multidirectional forces. This load-bearing capability allows machinery to handle different types of loads while maintaining performance and stability.

  • Smooth Rotation:

Ball bearings enable smooth and precise rotational movement. The rolling motion of the balls provides consistent motion with minimal resistance, ensuring that machinery operates smoothly and without jerks.

  • High-Speed Capability:

Due to their low friction and efficient rolling action, ball bearings are suitable for high-speed applications. They allow machinery and equipment to achieve and maintain high rotational speeds without excessive wear or heat buildup.

  • Reduced Wear and Maintenance:

The reduced friction in ball bearings leads to lower wear on components. This results in longer service intervals and reduced maintenance requirements, saving both time and maintenance costs.

  • Energy Efficiency:

By minimizing friction and reducing energy losses, ball bearings contribute to the overall energy efficiency of machinery. This is particularly important in applications where energy consumption is a concern.

  • Versatility:

Ball bearings come in various types, sizes, and configurations, allowing them to be used in a wide range of machinery and equipment. They can be customized to suit specific application requirements.

  • Reliability and Longevity:

Ball bearings are designed to withstand heavy loads and harsh operating conditions. Their durability and resistance to wear ensure reliable performance and an extended operational life.

  • Quiet Operation:

Ball bearings contribute to quiet machinery operation due to the smooth rolling motion of the balls. This is particularly important in applications where noise reduction is a consideration.

In summary, the primary benefits of using ball bearings in machinery and equipment include reduced friction, efficient load support, smooth rotation, high-speed capability, reduced wear and maintenance, energy efficiency, versatility, reliability, and quiet operation. These benefits collectively enhance the performance and longevity of machinery across various industries.

China Hot selling High Rigidity Axial-Radial Load Capacity Zkldf260 Axial Angular Contact Ball Bearing carrier bearingChina Hot selling High Rigidity Axial-Radial Load Capacity Zkldf260 Axial Angular Contact Ball Bearing carrier bearing
editor by CX 2024-04-26

China supplier Double Row Angular Contact Ball Bearings (3207 3307 3208 3308 3209 3309 3210 3310 3211 3311 3212 3312 3213 3313 3214 3314 3215 3315) bearing assembly

Product Description

Product Description

Angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. This means that these bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.

We offer comprehensive ranges of angular contact ball bearings, which are available in:
–      Single row and double row
–      Open and sealed types
–      Contact angle of 15, 30 or 40 degree
–      Chrome steel, ceramic or hybrid materials
–      Polyamide, steel and brass cage assemblies
 

 

Product Parameters

Double Row Angular Contact ball bearings have 2 rows of balls arranged back-to-back. The lines of action of the load at the contact between balls and raceways (load lines) diverge at the bearing axis and form an angle of 30° to the radial plane.

 

Dimension load Rating  
LimitingSpeed		 Bearing No. Mass
(Kg)
d D B

(KN)
Cr

(KN)
Cor

  
Grease		 Oil
10 30 14.3 8.4 6.5 14000 19000 3200 0.05l
12 32 15.9 8.45 607 13000 17000 3201 0.060
15 35 15.9 11.1 9.05 11000 15000 3202 0.069
42 19 14.2 11.8 9900 13000 3302 0.127
17 40 17.5 14.2 11.8 9900 13000 3203 0.099
47 22.2 17.5 15 9000 12000 3303 0.185
20 47 20.6 17.5 15.2 8800 12000 3204 0.166
52 22.2 21.1 18.6 8000 11000 3304 0.221
25 52 20.6 19.3 18.4 7300 9800 3205 0.183
62 25.4 29.4 26.8 6700 8900 3305 0.354
30 62 23.8 27.7 27.4 6300 8400 3206 0.303
72 30.2 39 36.5 5700 7600 3306 0.558
35 72 27 37.5 38 5500 7400 3207 0.458
80 34.9 49.5 47.5 5000 6600 3307 0.756
40 80 30.2 40.5 45 4900 6600 3208 0.627
90 36.5 54.5 57.5 4400 5900 3308 1.030
45 85 30.2 46.5 52 4400 5900 3209 0.678
100 39.7 67.5 72.5 4000 5300 3309 1.370
50 90 30.2 52.5 60 4000 5300 3210 0.698
110 44.4 81.5 89.5 3600 4800 3310 1.980
55 100 33.3 66 76.5 3600 4900 3211 1.070
120 49.2 96.5 108 3300 4400 3311 2.420
60 110 36.5 70.5 88 3400 4500 3212 1.340
130 54 113 128 3000 4000 3312 3.070
65 120 38.1 78 99 3100 4200 3213 1.680
140 58.7 131 150 2800 3700 3313 3.900
70 125 39.7 86 110 2900 3900 3214 1.840
150 63.5 153 168 2600 3500 3314 5.200
75 130 41.3 94 122 2700 3600 3215 2.000
160 68.3 172 191 2400 3200 3315 6.300

Packaging & Shipping

Our Advantages

1. We have over 10 years’ experience.
2. OEM or Non-Standard Bearings: Any requirement for Non-standard bearings is easily fulfilled by us due to our vast knowledge and links in the industry.
3. After Sales Service and Technical Assistance: Our company provides after-sales service and technical assistance as per the customer’s requirements and needs.
4. Quick Delivery: Our company provides just-in-time delivery with our streamlined supply chain.
5.We attend promptly to any customer questions. We believe that if our customers are satisfied then it proves our worth. Our customers are always given quick support.                              

Please contact us immediately if you have any questions.

Related Products

 

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Double
Samples:
US$ 0/Piece
1 Piece(Min.Order)

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Order Sample
Customization:
Available

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Customized Request

.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}

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Estimated freight per unit.





about shipping cost and estimated delivery time.
Payment Method:







 

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Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

ball bearing

Can you Provide Examples of Industries where Ball Bearings are Crucial Components?

Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:

  • Automotive Industry:

Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.

  • Aerospace Industry:

In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.

  • Industrial Machinery:

Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.

  • Medical Equipment:

In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.

  • Robotics and Automation:

Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.

  • Renewable Energy:

Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.

  • Marine and Shipbuilding:

Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.

  • Heavy Equipment and Construction:

In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.

  • Electronics and Consumer Appliances:

Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.

  • Oil and Gas Industry:

In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.

These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.

ball bearing

How do Ceramic Ball Bearings Compare to Traditional Steel Ball Bearings in Terms of Performance?

Ceramic ball bearings and traditional steel ball bearings have distinct characteristics that can impact their performance in various applications. Here’s a comparison of how these two types of bearings differ in terms of performance:

  • Material Composition:

Ceramic Ball Bearings:

Ceramic ball bearings use ceramic rolling elements, typically made from materials like silicon nitride (Si3N4) or zirconium dioxide (ZrO2). These ceramics are known for their high hardness, low density, and resistance to corrosion and wear.

Traditional Steel Ball Bearings:

Traditional steel ball bearings use steel rolling elements. The type of steel used can vary, but common materials include chrome steel (52100) and stainless steel (440C). Steel bearings are known for their durability and strength.

  • Friction and Heat:

Ceramic Ball Bearings:

Ceramic bearings have lower friction coefficients compared to steel bearings. This results in reduced heat generation during operation, contributing to higher efficiency and potential energy savings.

Traditional Steel Ball Bearings:

Steel bearings can generate more heat due to higher friction coefficients. This can lead to increased energy consumption in applications where efficiency is crucial.

  • Weight:

Ceramic Ball Bearings:

Ceramic bearings are lighter than steel bearings due to the lower density of ceramics. This weight reduction can be advantageous in applications where minimizing weight is important.

Traditional Steel Ball Bearings:

Steel bearings are heavier than ceramic bearings due to the higher density of steel. This weight may not be as critical in all applications but could impact overall equipment weight and portability.

  • Corrosion Resistance:

Ceramic Ball Bearings:

Ceramic bearings have excellent corrosion resistance, making them suitable for applications in corrosive environments, such as marine or chemical industries.

Traditional Steel Ball Bearings:

Steel bearings are susceptible to corrosion, especially in harsh environments. Stainless steel variants offer improved corrosion resistance but may still corrode over time.

  • Speed and Precision:

Ceramic Ball Bearings:

Ceramic bearings can operate at higher speeds due to their lower friction and ability to withstand higher temperatures. They are also known for their high precision and low levels of thermal expansion.

Traditional Steel Ball Bearings:

Steel bearings can operate at high speeds as well, but their heat generation may limit performance in certain applications. Precision steel bearings are also available but may have slightly different characteristics compared to ceramics.

  • Cost:

Ceramic Ball Bearings:

Ceramic bearings are generally more expensive to manufacture than steel bearings due to the cost of ceramic materials and the challenges in producing precision ceramic components.

Traditional Steel Ball Bearings:

Steel bearings are often more cost-effective to manufacture, making them a more economical choice for many applications.

In conclusion, ceramic ball bearings and traditional steel ball bearings offer different performance characteristics. Ceramic bearings excel in terms of low friction, heat generation, corrosion resistance, and weight reduction. Steel bearings are durable, cost-effective, and widely used in various applications. The choice between the two depends on the specific requirements of the application, such as speed, precision, corrosion resistance, and budget considerations.

ball bearing

What are the Primary Benefits of Using Ball Bearings in Machinery and Equipment?

Ball bearings offer several primary benefits when used in machinery and equipment. Their design and functionality provide advantages that contribute to the efficient and reliable operation of various applications. Here are the key benefits:

  • Reduced Friction:

One of the primary benefits of ball bearings is their ability to minimize friction between moving parts. The rolling motion of the balls reduces the contact area and sliding friction, leading to smoother operation and less energy loss due to frictional heating.

  • Efficient Load Support:

Ball bearings are engineered to support both radial and axial loads, making them versatile for applications with multidirectional forces. This load-bearing capability allows machinery to handle different types of loads while maintaining performance and stability.

  • Smooth Rotation:

Ball bearings enable smooth and precise rotational movement. The rolling motion of the balls provides consistent motion with minimal resistance, ensuring that machinery operates smoothly and without jerks.

  • High-Speed Capability:

Due to their low friction and efficient rolling action, ball bearings are suitable for high-speed applications. They allow machinery and equipment to achieve and maintain high rotational speeds without excessive wear or heat buildup.

  • Reduced Wear and Maintenance:

The reduced friction in ball bearings leads to lower wear on components. This results in longer service intervals and reduced maintenance requirements, saving both time and maintenance costs.

  • Energy Efficiency:

By minimizing friction and reducing energy losses, ball bearings contribute to the overall energy efficiency of machinery. This is particularly important in applications where energy consumption is a concern.

  • Versatility:

Ball bearings come in various types, sizes, and configurations, allowing them to be used in a wide range of machinery and equipment. They can be customized to suit specific application requirements.

  • Reliability and Longevity:

Ball bearings are designed to withstand heavy loads and harsh operating conditions. Their durability and resistance to wear ensure reliable performance and an extended operational life.

  • Quiet Operation:

Ball bearings contribute to quiet machinery operation due to the smooth rolling motion of the balls. This is particularly important in applications where noise reduction is a consideration.

In summary, the primary benefits of using ball bearings in machinery and equipment include reduced friction, efficient load support, smooth rotation, high-speed capability, reduced wear and maintenance, energy efficiency, versatility, reliability, and quiet operation. These benefits collectively enhance the performance and longevity of machinery across various industries.

China supplier Double Row Angular Contact Ball Bearings (3207 3307 3208 3308 3209 3309 3210 3310 3211 3311 3212 3312 3213 3313 3214 3314 3215 3315) bearing assemblyChina supplier Double Row Angular Contact Ball Bearings (3207 3307 3208 3308 3209 3309 3210 3310 3211 3311 3212 3312 3213 3313 3214 3314 3215 3315) bearing assembly
editor by CX 2024-04-25

China manufacturer High Precision Four Point Contact Ball Type Slewing Ring Bearing double row ball bearing

Product Description

Product Description

Materia

Carbon Steel , Alloy Steel

Standard

ASTM DIN . EN GOST JIS ETC

Structure

Forging , Casting and Welding

Module of Gear

8-120

Gear Grinding

MAX Module 24

Diameter of Gear Wheel :

MAX 13 000 mm

Diameter of Spiral Gear :

MAX . 2 200 mm

Length of Gear Shaft :

MAX 5 000 mm

OEM Service Offered

According to Customer Drawings

Segments Gear Offered :

According to Customer Requests

Heat Treatment

Q & T Case Hardening

 

FAQ

 

1. Are you a businessman or a manufacturer?

We are an enterprise integrating industry and trade, and our factory is located in ZheJiang Province.

2. What are the terms of payment?

We usually accept T/T or L/C.Other terms are negotiable.

3. What is your minimum order quantity?

It depends on what you buy.Under normal circumstances, our minimum order quantity is 1 piece.

4. What’s your delivery time?

Our lead time is only 3-7 days if stock is available.If it is our standard type, the delivery time is about 25 days, if it is not standard type, the delivery time is 45~50 days.

5. What about quality control?

We have a perfect quality management system to produce perfect products.Responsible for the careful testing of product quality and specifications, monitoring each production process until packaging is completed to ensure product safety into the container.

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Standard or Nonstandard: Nonstandard
Feature: Corrosion-Resistant
Sealing Gland: Non-Seal
Rolling-Element Number: Multiple-Column
Roller Type: Deep Groove Raceway
Material: Alloy
Samples:
US$ 5000/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

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Customized Request

ball bearing

Can you Provide Examples of Industries where Ball Bearings are Crucial Components?

Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:

  • Automotive Industry:

Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.

  • Aerospace Industry:

In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.

  • Industrial Machinery:

Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.

  • Medical Equipment:

In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.

  • Robotics and Automation:

Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.

  • Renewable Energy:

Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.

  • Marine and Shipbuilding:

Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.

  • Heavy Equipment and Construction:

In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.

  • Electronics and Consumer Appliances:

Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.

  • Oil and Gas Industry:

In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.

These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.

ball bearing

How do Temperature and Environmental Conditions Affect the Performance of Ball Bearings?

Temperature and environmental conditions have a significant impact on the performance and longevity of ball bearings. The operating environment can influence factors such as lubrication effectiveness, material properties, and overall bearing behavior. Here’s how temperature and environmental conditions affect ball bearing performance:

  • Lubrication:

Temperature variations can affect the viscosity and flow characteristics of lubricants. Extreme temperatures can cause lubricants to become too thin or too thick, leading to inadequate lubrication and increased friction. In high-temperature environments, lubricants can degrade, reducing their effectiveness.

  • Material Properties:

Temperature changes can alter the material properties of the bearing components. High temperatures can lead to thermal expansion, affecting bearing clearances and potentially causing interference between components. Extreme cold temperatures can make materials more brittle and prone to fracture.

  • Clearance Changes:

Temperature fluctuations can cause changes in the internal clearance of ball bearings. For instance, at high temperatures, materials expand, leading to increased clearance. This can affect bearing performance, load distribution, and overall stability.

  • Corrosion and Contamination:

Harsh environmental conditions, such as exposure to moisture, chemicals, or abrasive particles, can lead to corrosion and contamination of bearing components. Corrosion weakens the material, while contamination accelerates wear and reduces bearing life.

  • Thermal Stress:

Rapid temperature changes can result in thermal stress within the bearing components. Differential expansion and contraction between the inner and outer rings can lead to stress and distortion, affecting precision and bearing integrity.

  • Noise and Vibration:

Temperature-related changes in material properties and internal clearances can influence noise and vibration levels. Extreme temperatures can lead to increased noise generation and vibration, affecting the overall operation of machinery.

  • Lubricant Degradation:

Environmental factors like humidity, dust, and contaminants can lead to premature lubricant degradation. Oxidation, moisture absorption, and the presence of foreign particles can compromise the lubricant’s performance and contribute to increased friction and wear.

  • Seal Effectiveness:

Seals and shields that protect bearings from contaminants can be affected by temperature fluctuations. Extreme temperatures can lead to seal hardening, cracking, or deformation, compromising their effectiveness in preventing contamination.

  • Choosing Appropriate Bearings:

When selecting ball bearings for specific applications, engineers must consider the expected temperature and environmental conditions. High-temperature bearings, bearings with specialized coatings, and those with enhanced sealing mechanisms may be necessary to ensure reliable performance.

Overall, understanding the impact of temperature and environmental conditions on ball bearing performance is crucial for proper bearing selection, maintenance, and ensuring optimal operation in diverse industries and applications.

ball bearing

Can you Explain the Various Types of Ball Bearings and their Specific Use Cases?

Ball bearings come in various types, each designed to meet specific application requirements. Here’s an overview of the different types of ball bearings and their specific use cases:

  • Deep Groove Ball Bearings:

Deep groove ball bearings are the most common and versatile type. They have a deep raceway that allows them to handle both radial and axial loads. They are used in a wide range of applications, including electric motors, household appliances, automotive components, and industrial machinery.

  • Angular Contact Ball Bearings:

Angular contact ball bearings have a contact angle that enables them to handle both radial and axial loads at specific angles. They are suitable for applications where combined loads or thrust loads need to be supported, such as in machine tool spindles, pumps, and agricultural equipment.

  • Self-Aligning Ball Bearings:

Self-aligning ball bearings have two rows of balls and are designed to accommodate misalignment between the shaft and the housing. They are used in applications where shaft deflection or misalignment is common, such as conveyor systems, textile machinery, and paper mills.

  • Thrust Ball Bearings:

Thrust ball bearings are designed to support axial loads in one direction. They are commonly used in applications where axial loads need to be supported, such as in automotive transmissions, steering systems, and crane hooks.

  • Single-Row vs. Double-Row Bearings:

Single-row ball bearings have a single set of balls and are suitable for moderate load and speed applications. Double-row ball bearings have two sets of balls and offer higher load-carrying capacity. Double-row designs are used in applications such as machine tool spindles and printing presses.

  • Miniature and Instrument Ball Bearings:

Miniature ball bearings are smaller in size and are used in applications with limited space and lower load requirements. They are commonly used in small electric motors, medical devices, and precision instruments.

  • Max-Type and Conrad Bearings:

Max-type ball bearings have a larger number of balls to increase load-carrying capacity. Conrad bearings have fewer balls and are used in applications with moderate loads and speeds.

  • High-Precision Ball Bearings:

High-precision ball bearings are designed for applications where accuracy and precision are critical, such as machine tool spindles, aerospace components, and optical instruments.

  • High-Speed Ball Bearings:

High-speed ball bearings are engineered to minimize friction and accommodate rapid rotation. They are used in applications such as dental handpieces, turbochargers, and centrifuges.

In summary, the various types of ball bearings are tailored to different application requirements, including load type, direction, speed, and environmental conditions. Selecting the appropriate type of ball bearing ensures optimal performance and longevity in specific applications.

China manufacturer High Precision Four Point Contact Ball Type Slewing Ring Bearing double row ball bearingChina manufacturer High Precision Four Point Contact Ball Type Slewing Ring Bearing double row ball bearing
editor by CX 2024-04-23

China Professional Angular Contact Rolling Ball Bearings bearing engineering

Product Description

Angular Contact Rolling Ball Bearings

We make various kinds of ball bearing as per customer’s drawing and samples. Our ball bearing is widely applied the different industrials.
Quality comes from being controlled rather than be done. On the basis of the escalating production equipment and optimized process, CZPT spare no efforts and keeps improving for quality control. Quality assurance covered with system, technology and human resources are in full swing.
Confidence comes from strength, quality is derived from strict control and management. CZPT all along works for constant high quality products.  
 
High carbon chrome bearing steel is a general and normally best material for bearing rings and rolling elements.
Chemical composition of bearing steel GCr 15

element content(Wt%)
C
0.95~1.05		 Cr
1.4~1.65		 Si
0.15~0.35		 Mn
0.25~0.45		 P
≤0.571		 S
≤0.02
Ni
<0.23		 Cu
≤0.25		 Mo
≤0.1		 Sn
<0.03		 As
<0.04		 Ti
<0.005
Sb
<0.002		 Pb
<0.002		 O
<0.001		 Al
<0.05		 Ca
<0.01		  

Competitive advantages
1. Our ball bearing has a wide application, such as automotive industry, household appliances, power tools and etc.
2. We directly supply our ball bearing to many countries, like USA, France, Turkey, India, Brazil, Argentina, Mexico etc.
3. We have a wide range of ball bearing.
4. We could customize ball bearing for our customer.
 
Information needed for ball bearing inquiry
It will be better if customer could send us detailed drawing including below information.
1.Ball bearing model number
2. Ball bearing dimension
3. Ball bearing application
4. Required quantity
5. Other technical requirement. 

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Contact Angle: Customized
Aligning: Customized
Separated: Customized
Rows Number: Customized
Load Direction: Customized
Material: Bearing Steel

ball bearing

Can you Provide Examples of Industries where Ball Bearings are Crucial Components?

Ball bearings are essential components in a wide range of industries where smooth motion, load support, and precision are vital. Here are some examples of industries where ball bearings play a crucial role:

  • Automotive Industry:

Ball bearings are used in various automotive applications, including wheel hubs, transmissions, engines, steering systems, and suspension components. They provide reliable rotation and support in both passenger vehicles and commercial vehicles.

  • Aerospace Industry:

In the aerospace sector, ball bearings are found in aircraft engines, landing gear systems, control surfaces, and avionics equipment. Their ability to handle high speeds and precision is vital for aviation safety.

  • Industrial Machinery:

Ball bearings are integral to a wide range of industrial machinery, including pumps, compressors, conveyors, machine tools, printing presses, and textile machinery. They facilitate smooth operation and load distribution in these diverse applications.

  • Medical Equipment:

In medical devices and equipment, ball bearings are used in surgical instruments, imaging equipment, dental tools, and laboratory machinery. Their precision and smooth movement are crucial for accurate diagnostics and treatments.

  • Robotics and Automation:

Ball bearings are key components in robotic arms, automation systems, and manufacturing machinery. They enable precise movement, high-speed operation, and reliable performance in automated processes.

  • Renewable Energy:

Wind turbines and solar tracking systems utilize ball bearings to enable efficient rotation and tracking of the wind blades and solar panels. Ball bearings withstand the dynamic loads and environmental conditions in renewable energy applications.

  • Marine and Shipbuilding:

Ball bearings are used in marine applications such as ship propulsion systems, steering mechanisms, and marine pumps. They withstand the corrosive environment and provide reliable performance in maritime operations.

  • Heavy Equipment and Construction:

In construction machinery like excavators, bulldozers, and cranes, ball bearings support the movement of heavy loads and enable efficient operation in demanding environments.

  • Electronics and Consumer Appliances:

Consumer electronics like electric motors, computer hard drives, and household appliances rely on ball bearings for smooth motion and reliable operation.

  • Oil and Gas Industry:

In oil and gas exploration and extraction equipment, ball bearings are used in drilling rigs, pumps, and processing machinery. They handle the high loads and harsh conditions of this industry.

These examples demonstrate how ball bearings are indispensable components in various industries, contributing to the efficiency, reliability, and functionality of diverse mechanical systems and equipment.

ball bearing

How do Miniature Ball Bearings Differ from Standard-sized Ones, and Where are They Commonly Used?

Miniature ball bearings, as the name suggests, are smaller in size compared to standard-sized ball bearings. They have distinct characteristics and are designed to meet the unique requirements of applications that demand compactness, precision, and efficient rotation in confined spaces. Here’s how miniature ball bearings differ from standard-sized ones and where they are commonly used:

  • Size:

The most noticeable difference is their size. Miniature ball bearings typically have outer diameters ranging from a few millimeters to around 30 millimeters, while standard-sized ball bearings have larger dimensions suitable for heavier loads and higher speeds.

  • Load Capacity:

Due to their smaller size, miniature ball bearings have lower load-carrying capacities compared to standard-sized bearings. They are designed for light to moderate loads and are often used in applications where precision and compactness are prioritized over heavy load support.

  • Precision:

Miniature ball bearings are known for their high precision and accuracy. They are manufactured to tighter tolerances, making them suitable for applications requiring precise motion control and low levels of vibration.

  • Speed:

Miniature ball bearings can achieve higher speeds than standard-sized bearings due to their smaller size and lower mass. This makes them ideal for applications involving high-speed rotation.

  • Friction and Efficiency:

Miniature ball bearings generally have lower friction due to their smaller contact area. This contributes to higher efficiency and reduced heat generation in applications that require smooth and efficient motion.

  • Applications:

Miniature ball bearings find applications in various industries and sectors:

  • Electronics and Consumer Devices:

They are used in small motors, computer disk drives, printers, and miniature fans, where space is limited but precise motion is essential.

  • Medical and Dental Equipment:

Miniature bearings are used in medical devices such as surgical instruments, dental handpieces, and diagnostic equipment due to their precision and compactness.

  • Robotics and Automation:

Miniature ball bearings are integral to robotic arms, miniature conveyors, and automation systems, enabling precise movement in confined spaces.

  • Aerospace and Defense:

They are used in applications like UAVs (drones), aerospace actuators, and satellite components where size and weight constraints are critical.

  • Optics and Instrumentation:

Miniature bearings play a role in optical instruments, cameras, and measuring devices, providing smooth rotation and accurate positioning.

Overall, miniature ball bearings are specialized components designed for applications where space, precision, and efficient rotation are paramount. Their compactness and high precision make them crucial in various industries requiring reliable motion control in limited spaces.

ball bearing

What are the Primary Benefits of Using Ball Bearings in Machinery and Equipment?

Ball bearings offer several primary benefits when used in machinery and equipment. Their design and functionality provide advantages that contribute to the efficient and reliable operation of various applications. Here are the key benefits:

  • Reduced Friction:

One of the primary benefits of ball bearings is their ability to minimize friction between moving parts. The rolling motion of the balls reduces the contact area and sliding friction, leading to smoother operation and less energy loss due to frictional heating.

  • Efficient Load Support:

Ball bearings are engineered to support both radial and axial loads, making them versatile for applications with multidirectional forces. This load-bearing capability allows machinery to handle different types of loads while maintaining performance and stability.

  • Smooth Rotation:

Ball bearings enable smooth and precise rotational movement. The rolling motion of the balls provides consistent motion with minimal resistance, ensuring that machinery operates smoothly and without jerks.

  • High-Speed Capability:

Due to their low friction and efficient rolling action, ball bearings are suitable for high-speed applications. They allow machinery and equipment to achieve and maintain high rotational speeds without excessive wear or heat buildup.

  • Reduced Wear and Maintenance:

The reduced friction in ball bearings leads to lower wear on components. This results in longer service intervals and reduced maintenance requirements, saving both time and maintenance costs.

  • Energy Efficiency:

By minimizing friction and reducing energy losses, ball bearings contribute to the overall energy efficiency of machinery. This is particularly important in applications where energy consumption is a concern.

  • Versatility:

Ball bearings come in various types, sizes, and configurations, allowing them to be used in a wide range of machinery and equipment. They can be customized to suit specific application requirements.

  • Reliability and Longevity:

Ball bearings are designed to withstand heavy loads and harsh operating conditions. Their durability and resistance to wear ensure reliable performance and an extended operational life.

  • Quiet Operation:

Ball bearings contribute to quiet machinery operation due to the smooth rolling motion of the balls. This is particularly important in applications where noise reduction is a consideration.

In summary, the primary benefits of using ball bearings in machinery and equipment include reduced friction, efficient load support, smooth rotation, high-speed capability, reduced wear and maintenance, energy efficiency, versatility, reliability, and quiet operation. These benefits collectively enhance the performance and longevity of machinery across various industries.

China Professional Angular Contact Rolling Ball Bearings bearing engineeringChina Professional Angular Contact Rolling Ball Bearings bearing engineering
editor by CX 2024-04-23

China wholesaler NSK, NTN. Koyo,Angular Contact Ball Bearings,7348c,7348CTA,7348ceta,7348acm,B7348c,7352c,7352CTA,7352ceta,7352acm,B7352c,7356c,7356CTA,7356ceta,7356acm,B7356c, bearing engineering

Product Description

Angular contact ball bearings have inner and outer ring raceways that are displaced relative to each other in the direction of the bearing axis. This means that these bearings are designed to accommodate combined loads, i.e. simultaneously acting radial and axial loads.
The axial load carrying capacity of angular contact ball bearings increases as the contact angle increases. The contact angle is defined as the angle between the line joining the points of contact of the ball and the raceways in the radial plane, along which the combined load is transmitted from 1 raceway to another, and a line perpendicular to the bearing axis.

     The most commonly used designs are:

  • single row angular contact ball bearings.
  • double row angular contact ball bearings.
  • four-point contact ball bearings.

 

Part No. d/mm D/mm B/mm Load Rating(KN) Limited  Speed(r/min) Load Rating(KN) Limited  Speed(r/min)
Cr/KN Cor/KN Grease  Oil  Cr/KN Cor/KN Grease  Oil 
718 serie       α=15°(C) α=25°(AC)
71800 10 19 5 1.8 1.1 75000 120000 1.7 1.1 70000 110000
71801 12 21 5 2 1.4 70000 110000 1.9 1.3 63000 95000
71802 15 24 5 2.2 1.8 60000 90000 2.1 1.7 53000 80000
71803 17 26 5 2.3 1.9 53000 80000 2.1 1.8 50000 75000
71804 20 32 7 3.9 3.4 45000 67000 3.7 3.2 40000 60000
71805 25 37 7 4.2 4.1 38000 56000 3.9 3.9 34000 50000
71806 30 42 7 4.4 4.8 32000 48000 4.1 4.5 28000 43000
71807 35 47 7 4.6 5.5 26000 40000 4.3 5.2 24000 38000
71815 75 95 10 14.2 21.7 12000 19000 13.3 20.5 11000 18000
71816 80 100 10 14.5 23.1 11000 18000 13.6 21.8 9500 16000
71817 85 110 13 21.5 32.2 10000 17000 20.2 30.5 9000 15000
71818 90 115 13 21.7 33.5 9500 16000 20.4 31.6 8500 14000
71819 95 120 13 21.9 34.7 9000 15000 20.6 32.8 8500 14000
71820 100 125 13 22.5 37 8500 14000 21.2 34.9 8000 13000
71821 105 130 13 22.7 38.3 8500 14000 21.3 36.1 8000 13000
71822 110 140 16 31.8 51.6 8000 13000 29.9 48.7 7500 12000
71824 120 150 16 33.1 56.9 7000 11000 31.1 53.7 6700 10000
71826 130 165 18 38.7 67.6 6700 10000 36.3 63.8 6000 9000
71828 140 175 18 44.8 79.2 6000 9000 42 74.7 5600 8500
71830 150 190 20 51.2 92 5600 8500 48 86.8 5000 7500
71832 160 200 20 52.4 97.7 5000 7500 49.2 92.2 4800 7000
71834 170 215 22 66.5 123.4 4800 7000 62.4 116.5 4300 6300
71836 180 225 22 83.8 151.6 4800 7000 78.6 143 4300 6300
71838 190 240 24 100 179 4500 6700 94.4 169.2 4000 6000
71840 200 250 24 102.5 189.3 4300 6300 96.2 178.6 3800 5600
71844 220 270 24 106.4 209.3 3800 5600 99.8 197.4 3400 5000
71848 240 300 28 145 277 3400 5000 136 261 3000 4500
71852 260 320 28 148.8 299.3 3100 4600 139.6 282.3 2700 4100
71856 280 350 33 182 363.8 2800 4100 170.8 343.3 2400 3700

 

Part No. d/mm D/mm B/mm Load Rating(KN) Limited  Speed(r/min) Load Rating(KN) Limited  Speed(r/min)
Cr/KN Cor/KN Grease  Oil  Cr/KN Cor/KN Grease  Oil 
719 serie       α=15°(C) α=25°(AC)
71907 35 55 10 11 10.9 26000 40000 10.4 10.3 20000 34000
H71907 35 55 10 7.7 5.4 36000 53000 7.4 5.1 30000 45000
H71907/HQ1 35 55 10 7.7 5.4 40000 60000 7.4 5.1 34000 50000
71908 40 62 12 14 14.2 20000 34000 13.3 13.5 18000 30000
H71908 40 62 12 9.8 7 30000 45000 9.3 6.6 26000 40000
H71908/HQ1 40 62 12 9.8 7 34000 50000 9.3 6.6 28000 43000
71909 45 68 12 14.7 16.1 18000 30000 13.9 15.2 17000 28000
H71909 45 68 12 10.3 7.7 26000 40000 9.7 7.3 22000 36000
H71909/HQ1 45 68 12 10.3 7.7 28000 43000 9.7 7.3 26000 40000
71910 50 72 12 19 21.2 17000 28000 17.9 20.1 15000 24000
H71910   72 12 13.2 10.2 22000 36000 12.5 9.5 19000 32000
H71910/HQ1 50 72 12 13.2 10.2 26000 40000 12.5 9.5 22000 36000
71911 55 80 13 23.7 27.4 15000 24000 22.4 26 14000 22000
H71911 55 80 13 16.2 12.5 19000 32000 15.2 11.8 16000 26000
H71911/HQ1 55 80 13 16.2 12.5 22000 36000 15.2 11.8 22000 36000
71912 60 85 13 24.8 30.3 14000 22000 23.3 28.7 13000 20000
H71912 60 85 13 16.5 13.8 18000 30000 15.8 13.2 15000 24000
H71912/HQ1 60 85 13 16.5 13.8 19000 32000 15.8 13.2 20000 34000
71913 65 90 13 25.1 31.9 13000 20000 23.6 30.2 12000 19000
H71913 65 90 13 16.8 14.5 17000 28000 16.2 13.8 15000 24000
H71913/HQ1 65 90 13 16.8 14.5 19000 32000 16.2 13.8 17000 28000
71914 70 100 16 34.5 43.4 12000 19000 32.6 41.2 11000 18000
H71914 70 100 16 20.8 17.8 16000 26000 19.8 16.8 13000 20000
H71914/HQ1 70 100 16 20.8 17.8 19000 32000 19.8 16.8 17000 28000
71915 75 105 16 25 45.6 11000 18000 33 43.2 95000 16000
H71915 75 105 16 21.8 19.2 15000 24000 20.5 18.2 13000 20000
H71915/HQ1 75 105 16 21.8 19.2 17000 28000 20.5 18.2 15000 24000
71916 80 110 16 35.5 47.8 10000 17000 33.5 45.3 9000 15000
H71916 80 110 16 22.5 20.8 14000 22000 21.2 19.5 12000 19000
H71916/HQ1 80 110 16 22.5 20.8 16000 26000 21.2 19.5 14000 24000
71917   120 18 46.5 61.9 9500 16000 43.8 58.6 8500 14000
H71917 85 120 18 26.2 24.2 13000 20000 24.8 22.8 11000 18000
H71917/HQ1 85 120 18 26.2 24.2 15000 24000 24.8 22.8 13000 20000
71918 90 125 18 47.2 64.8 9000 15000 44.5 61.4 8000 13000
H71918 90 125 18 27.2 26.2 13000 20000 25.5 24.5 11000 18000
H71918/HQ1 90 125 18 27.2 26.2 15000 24000 25.5 24.5 13000 20000
71919 95 130 18 47.9 67.8 9000 15000 45.2 64.1 8000 13000
H71919 95 130 18 27.2 26.8 12000 19000 25.8 25.5 11000 18000
H71919/HQ1 95 130 18 27.2 26.8 14000 22000 25.8 25.5 13000 20000
71920 100 140 20 60.4 84.4 8500 14000 56.9 79.9 8000 13000
H71920 100 140 20 40.2 37.5 11000 18000 37.8 35.5 9000 15000
H71920/HQ1 100 140 20 40.2 37.5 13000 20000 37.8 35.5 11000 18000
71921 105 145 20 61.4 88.2 8000 13000 57.8 83.5 7500 12000
H71921 105 145 20 40.8 39.2 10000 17000 38.5 36.8 8500 14000
H71921/HQ1 105 145 20 40.8 39.2 12000 19000 38.5 36.8 10000 17000
71922 110 150 20 62.3 91.9 7500 12000 58.7 87 7000 11000
H71922 110 150 20 41.2 40.5 9000 15000 39.2 38.2 7500 12000
H71922/HQ1 110 150 20 41.2 40.5 11000 18000 39.2 38.2 9500 16000
71924 120 165 22 73.7 107.6 7000 11000 69.5 101.9 6700 10000
H71924 120 165 22 43.2 44.8 8500 14000 40.5 42.5 7500 12000
H71924/HQ1 120 165 22 43.2 44.8 10000 17000 40.8 42.5 9000 15000
71926 130 180 24 76.3 117.1 6700 10000 71.9 110.9 6000 9000
H71926 130 180 24 53.2 56.5 8000 13000 50.2 53.5 7500 12000
H71926/HQ1 130 180 24 53.2 56.5 9000 15000 50.2 53.5 8000 14000
71928 140 190 24 78.9 126.4 6000 9000 74.4 119.7 5600 8500
H71928 140 190 24 53.8 59.2 7000 11000 50.8 55.8 6700 10000
H71928/HQ1 140 190 24 53.8 59.2 8000 13000 50.8 55.8 7500 12000
71930 150 210 28 118.2 175.1 5600 8500 111.4 165.8 5000 7500
H71930 150 210 28 65.2 72.8 6700 10000 61.5 68.8 6000 9000
H71930/HQ1 150 210 28 65.2 72.8 7500 12000 61.5 68.8 7000 11000
71932 160 220 28 123.6 191.2 5000 7500 116.5 181.1 4800 7000
H71932 160 220 28 66.2 75.8 6000 9000 62.5 71.5 5600 8500
H71932/HQ1   220 28 66.2 75.8 7000 11000 62.5 71.5 6700 10000
71934 170 230 28 125.7 200 4800 7000 118.5 189.4 4300 6300
H71934 170 230 28 66.8 78.8 5600 8500 63.2 74.5 5000 7500
H71934/HQ1 170 230 28 66.8 78.8 6700 10000 63.2 74.2 6000 9000
71936 180 250 33 159.7 249.1 4500 6700 150.6 235.9 4000 6000
H71936 180 250 33 79.5 95.2 5000 7500 75.2 89.8 4800 7000
H71936/HQ1 180 250 33 79.5 95.2 6000 9000 75.2 89.8 5600 8500
71938 190 260 33 162.8 260.8 4300 6300 153.5 247 3800 5600
H71938 190 260 33 80.5 98.5 4800 7000 76.2 93.2 4300 6300
H71938/HQ1 190 260 33 80.5 98.5 5600 8500 76.2 93.2 5000 7500
71940 200 280 38 198.4 311.4 3800 5600 187.1 294.9 3600 5300
H71940 200 280 38 82.8 105.5 4500 6700 78.2 99.5 4000 6000
H71940/HQ1 200 280 38 82.8 105.5 5000 7500 78.2 99.5 4500 6700
71944 220 300 38 206.6 341.1 3600 5300 194.8 323 3200 4800
H71944 220 300 38 96.9 125.4 4300 6300 91.5 118.4 3800 5600
H71944/HQ1 220 300 38 96.9 125.4 5000 7500 91.5 118.4 4300 6300
71948 240 320 38 219.2 384.2 3200 4800 206.7 363.8 3000 4500
H71948 240 320 38 153 216 3900 5800 146 200 3500 5200
H71948/HQ1 240 320 38 153 216 4500 6500 146 200 4000 5800
71952 260 360 46 284.6 528.8 3000 4500 268.3 500.8 2600 4000
71956 280 380 46 288.7 554.6 2600 4000 272.2 525.5 2200 3600

 

Mod. No. d D Height Cr Cor Grease Oil Weight
(mm) (mm) (mm) (kN) (kN) (r/min) (r/min) (kg)  
7571C 50 80 16 26 21.9 13000 17000 0.29
7571AC 50 80 16 23.6 20.1 9200 11000 0.29
7210C 50 90 20 42.8 31.8 12000 16000 0.485
7210AC 50 90 20 39.4 41.3 8500 11000 0.485
7210B 50 90 20 37.535.7 26.7 6400 8500 0.485
7310B 50 110 27 64.4 44.3 5500 7300 1.14
7410B 50 130 31 90.2 60.4 4400 6000 1.92
7011C 55 90 18 34.1 28.6 11000 15000 0.42
7011AC 55 90 18 31.1 26.3 8300 10000 0.42
7211C 55 100 21 52.9 40.2 11000 14000 0.635
7211AC 55 100 21 48.7 37.1 7600 9500 0.635
7211B 55 100 21 44.1 33.8 5700 7600 0.635
7311B 55 120 29 74.3 52 5000 6700 1.45
7012C 60 95 18 35 30.6 11000 14000 0.45
7012AC 60 95 18 31.9 28.1 7700 9700 0.45
7212C 60 110 22 64 49.5 9500 13000 0.82
7212AC 60 110 22 58.9 45.7 6900 8600 0.82
7212B 60 110 22 53.4 41.6 5100 6900 0.82
7312B 60 130 31 84.9 60.3 4600 6200 1.81
7412B 60 150 35 119 86.7 3700 5100 2.85
7013C 65 100 18 37.1 34.3 10000 13000 0.47
7013AC 65 100 18 33.7 31.4 7200 9000 0.47
7213C 65 120 23 73.1 58.7 8900 12000 1.02
7213AC 65 120 23 67.3 54.2 6400 8000 1.02
7213B 65 120 23 60.9 49.3 4800 6400 1.02
7313B 65 140 33 96.1 69.3 4300 5800 2.22
7014C 70 110 20 46.9 43 9200 12000 0.66
7014AC 70 110 20 42.7 39.4 6600 8300 0.66
7214C 70 125 24 75.9 60.2 8400 11000 1.12
7214AC 70 125 24 69.8 55.6 6100 7600 1.12
7214B 70 125 24 63.2 50.6 4600 6100 1.12
7314B 70 150 35 108 78.9 4000 5400 2.7
7015C 75 115 20 48 45.6 8700 11000 0.69
7015AC 75 115 20 43.6 41.7 6300 7800 0.69
7215C 75 130 25 86.1 70.6 8000 11000 1.23
7215AC 75 130 25 79.2 65.2 5800 7200 1.23
7215B 75 130 25 71.7 59.3 4300 5800 1.23
7915B 75 160 37 125 98.5 3400 4500 3.3
7016C 80 125 22 58.7 55.3 8000 11000 0.93
7016AC 80 125 22 53.4 50.6 5800 7200 0.93
7216C 80 140 26 92.8 77.5 7500 9900 1.5
7216AC 80 140 26 85.3 71.5 5400 6700 1.5
7216B 80 140 26 77.1 65 4000 5400 1.5
7316B 80 170 39 127 100 3500 4700 3.85
7017C 85 130 22 60.1 58.7 7600 10000 0.97
7017AC 85 130 22 54.6 53.7 5500 6800 0.97
7217C 85 150 28 107 90.6 7000 9200 1.87
7217AC 85 150 28 98.6 83.6 5000 6300 1.87
7217B 85 150 28 89.2 76 3800 5000 1.87
7317B 85 180 41 137 112 3300 4400 4.53
7018C 90 140 24 71.7 69.1 7100 9400 1.26
7018AC 90 140 24 65.2 63.3 5100 6400 1.26
7218C 90 160 30 123 105 6500 8600 2.3
7218AC 90 160 30 113 96.7 4700 5900 2.3
7218B 90 160 30 102 88 3500 4700 2.3
7318B 90 190 43 148 124 3100 4200 5.3
7019C 95 145 24 73.4 73.4 6700 8900 1.32
7019AC 95 145 24 66.6 67.1 4800 6000 1.32
7219C 95 170 32 133 112 6100 8100 2.78
7219AC 95 170 32 122 103 4400 5500 2.78
7219B 95 170 32 111 94 3300 4400 2.78
7319B 95 200 45 158 137 3000 4000 6.12

 

7000 Series – Angular Contact Ball Bearing
Angular single row ball bearing have a 40° contact angle
Item No. Dimensions Basic Load Ratings (N) Speed (1/min) Mass
(mm) Dynamic Static (kg)
d D B Cr C0r Limiting Reference approx.
7004 20 42 12 13,400 7,500 18,000 – 0.061
7005 25 47 12 15,000 9,300 16,000 – 0.071
7006 30 55 13 18,300 12,500 14,000 – 0.109
7007 35 62 14 22,400 16,000 12,000 – 0.14
7008 40 68 15 26,000 18,600 10,000 – 0.17
 
7200 Series – Angular Contact Ball Bearing
Angular single row ball bearing have a 40° contact angle
Item No. Dimensions Basic Load Ratings (N) Speed (1/min) Mass
(mm) Dynamic Static (kg)
d D B Cr C0r Limiting Reference approx.
7200 10 30 9 5,000 2,600 32,000 26,000 0.033
7201 12 32 10 6,950 3,550 28,000 26,000 0.035
7202 15 35 11 8,000 4,450 24,000 22,000 0.044
7203 17 40 12 10,000 5,700 20,000 20,000 0.064
7204 20 47 14 13,400 7,800 18,000 18,000 0.103
7205 25 52 15 14,600 9,300 16,000 16,000 0.127
7206 30 62 16 20,400 14,100 13,000 13,000 0.197
7207 35 72 17 27,000 19,000 11,000 12,000 0.29
7208 40 80 17 32,000 23,500 9,500 10,000 0.367
7209 45 85 19 36,000 27,000 8,500 9,500 0.411
7210 50 90 20 37,500 28,500 8,000 9,000 0.456
7211 55 100 21 46,500 38,500 7,000 8,500 0.604
7212 60 110 22 56,000 45,000 6,300 7,500 0.777
7213 65 120 23 64,000 55,000 6,000 7,000 1.08
7214 70 125 24 69,500 62,000 5,600 6,700 1.17
7215 75 130 25 68,000 62,000 5,300 6,700 1.25
7216 80 140 26 80,000 72,000 5,000 6,000 1.53
7217 85 150 28 90,000 86,000 4,500 6,000 1.94
7218 90 160 30 106,000 98,000 4,300 5,600 2.38
7219 95 170 32 116,000 106,000 4,000 5,300 2.64
7220 100 180 34 137,000 132,000 3,800 5,000 3.45
7221 105 190 36 144,000 142,000 6,000 4,800 4.18
7222 110 200 38 155,000 154,000 3,600 4,500 4.7
7224 120 215 40 169,000 178,000 3,400 4,300 5.31
7226 130 230 40 186,000 204,000 3,200 3,800 6.12
7228 140 250 42 198,000 231,000 4,800 3,400 8.55
7230 150 270 45 227000 275000 4,500 3000 10.9
7232 160 290 48 236,000 280,000 4,300 2,800 13.5
7234 170 310 52 265,000 325,000 3,800 2,600 16.7
 
7300 Series – Angular Contact Ball Bearing
Angular single row ball bearing have a 40° contact angle
Item No. Dimensions Basic Load Ratings (N) Speed (1/min) Mass
(mm) Dynamic Static (kg)
d D B Cr C0r Limiting Reference approx.
7301 12 37 12 10.600 5.300 24.000 19.000 0,066
7302 15 42 13 13.200 7.200 20.000 17.000 0,081
7303 17 47 14 16.300 9.000 18.000 15.000 0,11
7304 20 52 15 19.000 11.100 17.000 13.000 0,143
7305 25 62 17 26.000 15.800 14.000 11.000 0,242
7306 30 72 19 33.000 2.210 11.000 10.000 0,341
7307 35 80 21 40.000 27.500 9.500 9.000 0,447
7308 40 90 23 50.000 34.500 8.500 8.500 0,646
7309 45 100 25 61.000 43.000 7.500 7.500 0,813
7310 50 110 27 70.000 50.000 7.000 7.000 1,13
7311 55 120 29 80.000 61.000 6.300 6.700 1,46
7312 60 130 31 90.000 69.000 5.600 6.300 1,74
7313 65 140 33 103.000 82.000 5.300 6.000 2,12
7314 70 150 35 117.000 93.000 5.000 5.600 2,58
7315 75 160 37 130.000 107.000 4.500 5.300 3,29
7316 80 170 39 144.000 124.000 4.300 4.800 3,66
7317 85 180 41 155.000 138.000 4.000 4.500 4,4
7318 90 190 43 167.000 155.000 3.800 4.300 5,14
7319 95 200 45 176.000 167.000 3.800 4.000 5,93
7320 100 215 47 199.000 197.000 3.600 3.600 7,16
7321 105 225 49 209.000 214.000 5.300 3.400 9,0
7322 110 240 50 232.000 245.000 3.400 3.200 9,97
7324 120 260 55 255.000 285.000 3.200 3.000 12,5
7326 130 280 58 285.000 325.000 3.000 2.600 15,1
7328 140 300 62 300.000 345.000 4.300 2.400 20,5
7330 150 320 65 325.000 390.000 3.800 2.200 24,8
7332 160 340 68 360.000 450.000 3.600 2.000 29,0
7334 170 360 72 405.000 530.000 3.200 1.900 34,4

 

 

 

Part No. d/mm D/mm B/mm Load Rating(KN) Limited  Speed(r/min) Load Rating(KN) Limited  Speed(r/min)
Cr/KN Cor/KN Grease  Oil  Cr/KN Cor/KN Grease  Oil 
72 serie       α=15°(C) α=25°(AC)
7200 10 30 9 6.5 3.8 56000 85000 6.3 3.7 53000 80000
7201 12 32 10 7.2 4.5 53000 80000 6.9 4.3 48000 70000
7202 15 35 11 9.1 5.8 48000 70000 8.8 5.6 43000 63000
7203 17 40 12 11.3 7.4 40000 60000 10.9 7.1 38000 56000
7204 20 47 14 13.1 9.6 34000 50000 12.6 9.2 30000 45000
7205 25 52 15 16.8 13.1 30000 45000 16.1 12.5 26000 40000
7206 30 62 16 23.4 18.8 24000 38000 22.3 18 20000 34000
7207 35 72 17 25.8 22.9 18000 30000 24.5 21.9 17000 28000
7208 40 80 18 34.1 30.9 17000 28000 32.5 29.5 15000 24000
7209 45 85 19 35.5 33.8 16000 26000 33.8 32.3 14000 22000
7210 50 90 20 43.3 40.6 15000 24000 41.3 38.7 14000 22000
7211 55 100 21 53.6 51.1 14000 22000 51.1 48.8 13000 20000
7212 60 110 22 55.8 56.2 12000 19000 53 53.5 11000 18000
7213 65 120 23 67.5 69 11000 18000 64.2 65.8 9500 16000
7214 70 125 24 70.2 74.6 10000 17000 66.6 71.1 9000 15000
7215 75 130 25 72.7 80.2 9500 16000 68.9 76.3 8500 14000
7216 80 140 26 86.5 96.5 9000 15000 82.1 91.9 8000 13000
7217 85 150 28 97.4 107.5 8500 14000 92.5 102.4 7500 12000
7218 90 160 30 121.9 131.3 8000 13000 115.8 124.6 7000 11000
7219 95 170 32 128.9 145.1 7500 12000 122.5 138.3 6700 10000
7220 100 180 34 146.2 165.9 7000 11000 138.9 158.2 6700 10000
7221 105 190 36 164.3 188.2 7000 11000 156.3 179.5 6300 9500
7222 110 200 38 170.4 202.5 6700 10000 161.8 193 6000 9000
7224 120 215 40 175.4 218.4 6000 9000 166.3 207.9 5300 8000
7226 130 230 40 200.4 258.3 5600 8500 190.4 246.2 5000 7500
7228 140 250 42 223.6 306.6 5000 7500 212.3 292.2 4500 6700
7230 150 270 45 240.9 341.5 4500 6700 228.7 325.5 4000 6000
7232 160 290 48 248.6 365.8 4300 6300 236.1 348.6 3800 5600
7234 170 310 52 300.2 459.2 3800 5600 285 437.6 3600 5300
7236 180 320 52 311.2 490.8 3800 5600 295.5 467.7 3400 5000
7238 190 340 55 321.3 524.8 3400 5000 305.1 500.1 3200 4800
7240 200 360 58 330.9 558.6 3200 4800 314.2 532.3 3000 4500

 

Angular Contact Ball Bearing
                      X1=OD-0.5mm  
Single Row Double Row Four Points Contact Ball
70 series 72 series 73 series 52 series 53 series 32 series 33 series 40 series 49 series QJ series QJF series X1 series
ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM ITEM
7000 7200 7300 5200   3200   4032 4936 QJ203 QJF203 QJ1571X1 QJF1571X1
7001 7201 7301 5201   3201     4936X3 QJ303 QJF303    
7002 7202 7302 5202 5302 3202 3302   4938X3 QJ304 QJF304 QJ1571X1 QJF1571X1
7003 7203 7303 5203 5303 3203 3303 4040   QJ205 QJF205    
7004 7204 7304 5204 5304 3204 3304 4044 4944X3 QJ206 QJF206 QJ1571X1 QJF1571X1
7005 7205 7305 5205 5305 3205 3305 4048X1   QJ306 QJF306    
7006 7206 7306 5206 5306 3206 3306   4952X3 QJ207 QJF207 QJ1026X1 QJF1026X1
7007 7207 7307 5207 5307 3207 3307   4956X3 QJ307 QJF307    
7008 7208 7308 5208 5308 3208 3308   4960 QJ208 QJF208 QJ1571X1 QJF1571X1
7009 7209 7309 5209 5309 3209 3309   4960X3 QJ308 QJF308    
7571 7210 7310 5210 5310 3210 3310     QJ209 QJF209 QJ1030X1 QJF1030X1
7011 7211 7311 5211 5311 3211 3311     QJ309 QJF309    
7012 7212 7312 5212 5312 3212 3312     QJ210 QJF210 QJ1032X1 QJF1032X1
7013 7213 7313 5213 5313 3213 3313     QJ310 QJF310    
7014 7214 7314 5214 5314 3214 3314     QJ212 QJF212 QJ1034X1 QJF1034X1
7015 7215 7315 5215 5315 3215 3315     QJ214 QJF214    
7016 7216 7316 5216     3316     QJ216 QJF216 QJ1036X1 QJF1036X1
7018 7218 7318 5217   3220       QJ220 QJF220    
  7219 7319 5218     3322     QJ222 QJF222 QJ1038X1 QJF1038X1
7571 7220 7320 5219           QJ1571 QJF1571    
    7321 5220           QJ224 QJF224 QJ1040X1 QJF1040X1
7571 7222 7322             QJ1026 QJF1026    
7571 7224 7324             QJ226 QJF226    
7026 7226 7326             QJ1571 QJF1571    
7571 7228 7328             QJ228 QJF228    
7030 7230 7330             QJ1030 QJF1030    
7032 7232 7332             QJ230 QJF230    
7034 7234               QJ1032 QJF1032    
7036 7236 7336             QJ232 QJF232    
7038                 QJ1034 QJF1034    
7040 7240               QJ234 QJF234    
71952 7244               QJ1036 QJF1036    
71956 72948               QJ236 QJF236    
71957 7248               QJ1038 QJF1038    
7072                 QJ238 QJF238    
71976                 QJ1040 QJF1040    
                  QJ240 QJF240    
                  QJ1044 QJF1044    
                  QJ1048 QJF1048    
                  QJ1052 QJF1052    
                  QJ1056 QJF1056    
                  QJ1060 QJF1060    
                  QJ1064 QJF1064    
                  QJ1068 QJF1068    

SAMPLES
1. Samples quantity: 1-10 PCS are available.
2. Free samples: It depends on the Model No., material and quantity. Some of the bearings samples need client to pay samples charge and shipping cost.
3. It’s better to start your order with Trade Assurance to get full protection for your samples order.

CUSTOMIZED
The customized LOGO or drawing is acceptable for us.

MOQ
1. MOQ: 10 PCS standard bearings.
2. MOQ: 1000 PCS customized your brand bearings.

OEM POLICY
1. We can printing your brand (logo, artwork)on the shield or laser engraving your brand on the shield.
2. We can custom your packaging according to your design
3. All copyright own by clients and we promised don’t disclose any info.

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ball bearing

Are there Specific Maintenance Practices to Ensure the Longevity of Ball Bearings?

Maintaining ball bearings is essential to ensure their longevity, reliable performance, and prevent premature failure. Proper maintenance practices can extend the lifespan of ball bearings and the equipment they are used in. Here are specific maintenance practices to consider:

  • Regular Lubrication:

Implement a regular lubrication schedule using the appropriate lubricant for the application. Lubrication reduces friction, prevents wear, and helps dissipate heat. Follow manufacturer guidelines for lubricant type, quantity, and frequency.

  • Clean Environment:

Keep the operating environment clean and free from contaminants. Dust, dirt, and debris can infiltrate bearings and cause damage. Use seals or shields to protect bearings from contaminants, especially in harsh environments.

  • Proper Installation:

Ensure correct installation of bearings using proper tools and techniques. Improper installation can lead to misalignment, uneven load distribution, and premature wear. Follow manufacturer recommendations for installation procedures.

  • Regular Inspections:

Perform routine visual inspections to check for signs of wear, damage, or contamination. Regular inspections can help identify issues early and prevent further damage. Pay attention to noise, vibration, and temperature changes.

  • Temperature Monitoring:

Monitor bearing temperatures during operation using infrared thermometers or sensors. Abnormal temperature increases can indicate inadequate lubrication, misalignment, or other problems.

  • Correct Handling:

Handle bearings with care to prevent damage during storage, transportation, and installation. Avoid dropping or subjecting them to impacts that can affect their internal components.

  • Bearing Removal and Replacement:

Follow proper procedures when removing and replacing bearings. Use appropriate tools and techniques to avoid damage to the bearing or the surrounding components.

  • Alignment Maintenance:

Maintain proper shaft and housing alignment to prevent excessive loads and wear on the bearing. Misalignment can lead to increased stress and premature failure.

  • Training and Education:

Provide training to operators and maintenance personnel on proper bearing maintenance and handling practices. Educated personnel are more likely to identify issues and perform maintenance correctly.

  • Documented Records:

Keep records of maintenance activities, inspections, lubrication schedules, and any issues encountered. This documentation helps track the bearing’s performance over time and informs future maintenance decisions.

By implementing these maintenance practices, you can ensure the longevity of ball bearings, minimize downtime, reduce operational costs, and maintain the reliability of the equipment they are a part of.

ball bearing

How do Ceramic Ball Bearings Compare to Traditional Steel Ball Bearings in Terms of Performance?

Ceramic ball bearings and traditional steel ball bearings have distinct characteristics that can impact their performance in various applications. Here’s a comparison of how these two types of bearings differ in terms of performance:

  • Material Composition:

Ceramic Ball Bearings:

Ceramic ball bearings use ceramic rolling elements, typically made from materials like silicon nitride (Si3N4) or zirconium dioxide (ZrO2). These ceramics are known for their high hardness, low density, and resistance to corrosion and wear.

Traditional Steel Ball Bearings:

Traditional steel ball bearings use steel rolling elements. The type of steel used can vary, but common materials include chrome steel (52100) and stainless steel (440C). Steel bearings are known for their durability and strength.

  • Friction and Heat:

Ceramic Ball Bearings:

Ceramic bearings have lower friction coefficients compared to steel bearings. This results in reduced heat generation during operation, contributing to higher efficiency and potential energy savings.

Traditional Steel Ball Bearings:

Steel bearings can generate more heat due to higher friction coefficients. This can lead to increased energy consumption in applications where efficiency is crucial.

  • Weight:

Ceramic Ball Bearings:

Ceramic bearings are lighter than steel bearings due to the lower density of ceramics. This weight reduction can be advantageous in applications where minimizing weight is important.

Traditional Steel Ball Bearings:

Steel bearings are heavier than ceramic bearings due to the higher density of steel. This weight may not be as critical in all applications but could impact overall equipment weight and portability.

  • Corrosion Resistance:

Ceramic Ball Bearings:

Ceramic bearings have excellent corrosion resistance, making them suitable for applications in corrosive environments, such as marine or chemical industries.

Traditional Steel Ball Bearings:

Steel bearings are susceptible to corrosion, especially in harsh environments. Stainless steel variants offer improved corrosion resistance but may still corrode over time.

  • Speed and Precision:

Ceramic Ball Bearings:

Ceramic bearings can operate at higher speeds due to their lower friction and ability to withstand higher temperatures. They are also known for their high precision and low levels of thermal expansion.

Traditional Steel Ball Bearings:

Steel bearings can operate at high speeds as well, but their heat generation may limit performance in certain applications. Precision steel bearings are also available but may have slightly different characteristics compared to ceramics.

  • Cost:

Ceramic Ball Bearings:

Ceramic bearings are generally more expensive to manufacture than steel bearings due to the cost of ceramic materials and the challenges in producing precision ceramic components.

Traditional Steel Ball Bearings:

Steel bearings are often more cost-effective to manufacture, making them a more economical choice for many applications.

In conclusion, ceramic ball bearings and traditional steel ball bearings offer different performance characteristics. Ceramic bearings excel in terms of low friction, heat generation, corrosion resistance, and weight reduction. Steel bearings are durable, cost-effective, and widely used in various applications. The choice between the two depends on the specific requirements of the application, such as speed, precision, corrosion resistance, and budget considerations.

ball bearing

How do Ball Bearings Differ from Other Types of Bearings like Roller Bearings?

Ball bearings and roller bearings are two common types of rolling-element bearings, each with distinct designs and characteristics. Here’s a comparison of ball bearings and roller bearings:

  • Design:

Ball Bearings: Ball bearings use spherical balls to separate and reduce friction between the bearing’s inner and outer rings. The balls enable rolling motion and smooth contact, minimizing friction.

Roller Bearings: Roller bearings, as the name suggests, use cylindrical or tapered rollers instead of balls. These rollers have larger contact areas, distributing loads over a broader surface.

  • Friction and Efficiency:

Ball Bearings: Due to the point contact between the balls and the rings, ball bearings have lower friction and are more efficient at high speeds.

Roller Bearings: Roller bearings have a larger contact area, resulting in slightly higher friction compared to ball bearings. They are more suitable for heavy-load applications where efficiency is prioritized over high speeds.

  • Load Capacity:

Ball Bearings: Ball bearings excel at handling light to moderate loads in both radial and axial directions. They are commonly used in applications where smooth rotation and low friction are important.

Roller Bearings: Roller bearings have a higher load-carrying capacity than ball bearings. They can support heavier radial and axial loads and are preferred for applications with significant loads or impact forces.

  • Variability:

Ball Bearings: Ball bearings come in various designs, including deep groove, angular contact, and thrust ball bearings, each suitable for different applications.

Roller Bearings: Roller bearings have diverse types, including cylindrical, spherical, tapered, and needle roller bearings, each optimized for specific load and motion requirements.

  • Speed Capability:

Ball Bearings: The reduced friction in ball bearings makes them suitable for high-speed applications, such as electric motors and precision machinery.

Roller Bearings: Roller bearings can handle higher loads but are generally better suited for moderate to low speeds due to slightly higher friction.

  • Applications:

Ball Bearings: Ball bearings are used in applications where smooth motion, low friction, and moderate loads are essential, such as electric fans, bicycles, and some automotive components.

Roller Bearings: Roller bearings find applications in heavy machinery, construction equipment, automotive transmissions, and conveyor systems, where heavier loads and durability are crucial.

In summary, ball bearings and roller bearings differ in their design, friction characteristics, load capacities, speed capabilities, and applications. The choice between them depends on the specific requirements of the machinery and the type of loads and forces involved.

China wholesaler NSK, NTN. Koyo,Angular Contact Ball Bearings,7348c,7348CTA,7348ceta,7348acm,B7348c,7352c,7352CTA,7352ceta,7352acm,B7352c,7356c,7356CTA,7356ceta,7356acm,B7356c, bearing engineeringChina wholesaler NSK, NTN. Koyo,Angular Contact Ball Bearings,7348c,7348CTA,7348ceta,7348acm,B7348c,7352c,7352CTA,7352ceta,7352acm,B7352c,7356c,7356CTA,7356ceta,7356acm,B7356c, bearing engineering
editor by CX 2024-04-22

China Standard Needle Roller Bearing Needle Roller and Cage Assemblies Track Roller Bearing Cam Follower Angular Contact Ball Bearing Spherical Roller Bearing bearing air

Product Description

 

Basic Features of Needle Roller Bearing
Types Needle Roller and Cage Assemblies
Drawn Cup Needle Roller Bearings
Thrust Needle Roller Bearings
Needle Roller Bearings with Rings
Material Bearing Steel(GCr15, 100Cr6)
SPCC St14
Nylon
Bronze
Dimension Metric and Inch
Dimension Range 3mm~200mm(bore diameter)
MOQ 1
Delivery Time 15-45 days
Sea Ports ZheJiang HangZhou HangZhou

Why Choose HECTO?
1. More than 20 years of manufacturing and exporting experiences
2. an IATF16949 company
3. 100% inspecting of products
4. More competitive prices with better quality
5. More than 99% of delivery in time
6. Rapid response of your emails and questions
7. Products can be traced back

 
 
 
 

Needle Roller and Cage Assemblies

Shaft Bearing No. Boundary Dimensions(mm) Basic Load Rating(N) Limiting Speed
Fw Ew Bc Cr Cor Oil(RPM)
3 K3X5X7TN 3 5 7 1540 1290 50000
K3X5X9TN 3 5 9 1710 1480 48000
K3X6X7TN 3 6 7 1430 970 47000
4 K4X7X7TN 4 7 7 2330 1840 43000
K4X7X10TN 4 7 10 2350 1920 39000
5 K5X8X8TN 5 8 8 2300 1880 37000
K5X8X10TN 5 8 10 2800 2450 37000
6 K6X9X8TN 6 9 8 2500 2240 35000
K6X9X10TN 6 9 10 3300 3100 35000
K6X10X13TN 6 10 13 3500 2800 33000
7 K7X10X8TN 7 10 8 2750 2550 32000
K7X10X10TN 7 10 10 3350 3400 32000
8 K8X11X8TN 8 11 8 3000 2900 30000
K8X11X10TN 8 11 10 3830 3950 30000
K8X11X13TN 8 11 13 5000 5700 30000
K8X12X10TN 8 12 10 4900 4600 30000
9 K9X12X10TN 9 12 10 4200 4700 30000
K9X12X13TN 9 12 13 5500 6700 30000
10 K10X13X10TN 10 13 10 4500 5250 27000
K10X13X13TN 10 13 13 6000 7600 27000
K10X13X16TN 10 13 16 6300 7800 27000
K10X14X10TN 10 14 10 7000 7900 27000
K10X14X13TN 10 14 13 8000 9100 26000
K10X16X12TN 10 16 12 7000 9300 27000
12 K12X15X9TN 12 15 9 4120 5210 25000
K12X15X10TN 12 15 10 4320 5730 25000
K12X15X13TN 12 15 13 6000 8100 25000
K12X16X8TN 12 16 8 1200 4700 25000
K12X16X10TN 12 16 10 6000 6900 25000
K12X16X13TN 12 16 13 7900 9200 25000
K12X17X13TN 12 17 13 9300 10000 24000
K12X18X12TN 12 18 12 9800 8000 24000
K12X15X20TN 12 15 20 8200 12000 25000
14 K14X17X10 14 17 10 5100 6800 23000
K14X17X17 14 17 17 9300 14000 23000
K14X18X10 14 18 10 6800 8300 23000
K14X18X13 14 18 13 8100 9800 23000
K14X18X14 14 18 14 9200 12000 23000
K14X18X15 14 18 15 10000 13000 23000
K14X18X17 14 18 17 10500 13900 23000
K14X20X12 14 20 12 9900 10500 22000
15 K15X18X14 15 18 14 7500 11000 23000
K15X18X17 15 18 17 9600 15900 23000
K15X19X10 15 19 10 7200 9000 22000
K15X19X13 15 19 13 8300 9800 22000
K15X19X17 15 19 17 10300 15000 22000
K15X19X24 ZW 15 19 24 12800 25710 22000
K15X22X13 15 22 13 9700 11000 22000
K15X22X12 15 22 12 10000 13000 22000
K15X21X15 15 21 15 13800 16000 22000
K15X21X21 15 21 21 18000 24000 22000
16 K16X20X10 16 20 10 7600 9700 22000
K16X20X13 16 20 13 8700 11300 22000
K16X20X17 16 20 17 11200 16300 22000
K16X21X10 16 21 10 9000 12000 22000
K16X22X12 16 22 12 11000 12000 21000
K16X22X13 16 22 13 12000 13400 21000
K16X22X16 16 22 16 14300 17000 21000
K16X22X20 16 22 20 18000 22300 21000
K16X23X14 16 23 14 19000 21000 19000
K16X24X20 16 24 20 21100 23000 20000
17 K17X21X10 17 21 10 7900 15710 21000
K17X21X13 17 21 13 10000 14100 21000
K17X21X17 17 21 17 12000 17400 21000
K17X23X14 17 23 14 11000 15000 21000
18 K18X22X10 18 22 10 8200 9900 20000
K18X22X13 18 22 13 9000 12100 20000
K18X22X17 18 22 17 11900 17600 20000
K18X24X12 18 24 12 11200 12900 20000
K18X24X13 18 24 13 12900 14900 20000
K18X24X13.5 18 24 13.5 12900 14900 20000
K18X24X20 18 24 20 20000 26500 20000
K18X25X14 18 25 14 16500 18800 20000
K18X25X22 18 25 22 22900 28400 20000
K18X26X14 18 26 14 18000 20000 18000
K18X28X16 18 28 16 19000 18400 19000
19 K19X23X13 19 23 13 9300 13000 20000
K19X23X17 19 23 17 12000 18600 20000
20 K20X24X10 20 24 10 8700 12100 19000
K20X24X12 20 24 12 9600 13800 19000
K20X24X13 20 24 13 9600 13800 19000
K20X24X17 20 24 17 12400 20000 19000
K20X26X12 20 26 12 13100 15700 19000
K20X26X16 20 26 16 18000 25000 18500
K20X26X17 20 26 17 18700 25500 19000
K20X26X20 20 26 20 20600 28500 19000
K20X28X20 20 28 20 23400 28000 18000
K20X28X25 20 28 25 30000 28500 18000
K20X30X30 20 30 30 35000 41000 18000
21 K21X25X13 21 25 13 9600 14500 19000
K21X25X17 21 25 17 12800 21000 19000
22 K22X26X10 22 26 10 8700 12900 18000
K22X26X13 22 26 13 10000 15400 18000
K22X26X17 22 26 17 13100 22100 18000
K22X27X13 22 27 13 14000 23000 18000
K22X28X17 22 28 17 19000 26500 18000
K22X28X23 22 28 23 20000 27000 19000
K22X29X16 22 29 16 19500 25000 17000
K22X30X15TN 22 30 15 19600 22900 17000
K22X30X20 22 30 20 21000 23500 18900
K22X32X24 22 32 24 33500 39500 16000
23 K23X35X16TN 23 35 16 24000 23400 15000
24 K24X28X10 24 28 10 9400 14300 17000
K24X28X13 24 28 13 10500 17000 17000
K24X28X17 24 28 17 14000 24500 17000
K24X29X13 24 29 13 13100 19100 16000
K24X30X17 24 30 17 19000 27000 16000
K24X30X31 24 30 31 27000 43000 16000
25 K25X29X10 25 29 10 9700 14900 16000
K25X29X13 25 29 13 10800 17900 16000
K25X29X17 25 29 17 14500 25500 16000
K25X30X13 25 30 13 14100 21300 16000
K25X30X20 25 30 20 21100 28000 16000
K25X30X25 25 30 25 21700 40400 15000
K25X30X26 25 30 26 25710 26500 15000
K25X31X17 25 31 17 19000 28000 16000
K25X31X21 25 31 21 24100 37500 16000
K25X32X16 25 32 16 20500 27500 15000
K25X33X20 25 33 20 28000 37500 15000
K25X33X24 25 33 24 33900 46500 15000
K25X34X18 25 34 18 48000 67000 15000
K25X35X30 25 35 30 46500 61500 14000
K25X30X26 ZW 25 30 26 21000 35000 14000
26 K26X30X10 26 30 10 9500 15500 16000
K26X30X13 26 30 13 11100 18700 16000
K26X30X17 26 30 17 14700 27000 16000
K26X31X13 26 31 13 12400 18400 15000
K26X30X22 26 30 22 15200 28000 16000
27 K27X32X17 27 32 27 16000 34000 17000
28 K28X32X16.5 28 32 16.5 15000 32400 14000
K28X32X17 28 32 17 15000 32400 14000
K28X33X13 28 33 13 14800 23600 14000
K28X33X17 28 33 17 19100 33000 14000
K28X33X27 TN 28 33 27 22800 40500 14000
K28X34X17 28 34 17 21300 35000 14000
K28X35X16 28 35 16 21000 29000 14000
K28X35X18 28 35 18 23500 33500 14000
K28X35X20 28 35 20 24000 34000 14000
K28X35X27 28 35 27 34500 54500 14000
K28X36X16 28 36 16 34000 47000 11000
K28X40X18 28 40 18 33000 36500 12000
K28X40X25 28 40 25 45000 54500 12000
30 K30X33X10 30 33 10      
K30X34X13 30 34 13 11800 21200 13000
K30X35X13 30 35 13 15100 25000 13000
K30X35X17 30 35 17 19100 33500 13000
K30X35X26 30 35 26      
K30X35X27 30 35 27 30000 58500 13000
K30X37X16 30 37 16 22500 33000 13000
K30X38X25 30 38 25 16000 390000 13000
K30X39X21 30 39 21      
K30X40X18 30 40 18 31500 39500 12000
K30X40X27 30 40 27      
K30X40X30 30 40 30 48500 68500 13000
K30X35X26 30 35 26 23500 43500 12000
K30X42X44.1 30 42 44.1      
32 K32X37X13 32 37 13 15000 25000 12000
K32X37X17 32 37 17 19400 35000 12000
K32X37X27 32 37 27 29500 59500 12000
K32X37X28 TN 32 37 28 23100 43000 12000
K32X38X16 32 38 16 21000 34000 12000
K32X38X20 32 38 20 26000 44500 12000
K32X38X26 TN 32 38 26 27000 46500 12000
K32X39X16 32 39 16 23500 35000 12000
K32X39X18 32 39 18 26000 40500 12000
K32X40X20 32 40 20 37000 40500 12000
K32X40X36 32 40 36 53500 91500 12000
K32X46X32 32 46 32 65500 82500 11000
K32X40X42 TN 32 40 42 49500 83500 12000
35 K35X40X13 35 40 13 15800 27500 11000
K35X40X17 35 40 17 20300 38000 11000
K35X40X25 35 40 25 29000 59500 11000
K35X40X27 TN 35 40 27 24500 48000 11000
K35X40X27 35 40 27 27800 62100 11000
K35X40X30 35 40 30 25000 49500 11000
K35X42X16 35 42 16 23900 37000 11000
K35X42X18 35 42 18 27000 42500 11000
K35X42X30 35 42 30 38500 67500 11000
K35X43X18 35 43 18 28000 41500 11000
K35X45X20 35 45 20 36500 49500 10000
K35X45X30 35 45 30 52500 78500 10000
K35X45X49 35 45 49 81500 13400 10000
K35X40X30 ZW 35 40 30 31500 65500 11000
K35X42X20 ZW 35 42 20 29500 48500 11000
36 K36X41X30 36 41 30 23000 43000 11000
K36X42X16 36 42 16 24000 42000 11000
37 K37X42X17 37 42 17 21900 42500 10000
K37X42X27 37 42 27 31500 67500 10000
K37X45X26 37 45 26 43500 73500 10000
38 K38X43X17 38 43 17 20000 38000 10000
K38X43X27 38 43 27 31000 67500 10000
K38X46X20 38 46 20 35000 56500 10000
K38X46X32 38 46 32 54500 98500 10000
39 K39X44X24 39 44 24 28000 58500 10000
K39X44X26 ZW 39 44 26 27000 55500 10000
40 K40X44X13 40 44 13 13500 28000 10000
K40X45X13 40 45 13 17100 32000 10000
K40X45X17 40 45 17 20900 41000 10000
K40X45X21 40 45 21 24400 49500 10000
K40X45X27 40 45 27 32500 72500 10000
K40X46X17 40 46 17 24500 44500 9000
K40X47X18 40 47 18 29000 49500 9000
K40X47X20 40 47 20 32000 56500 9000
K40X48X20 40 48 20 35500 58500 9000
K40X45X30 ZW 40 45 30 26000 53500 9000
42 K42X47X13 42 47 13 17300 33000 9000
K42X47X17 42 47 17 21100 42500 9000
K42X47X25 TN 42 47 25 27000 57500 9000
K42X47X27 42 47 27 33000 74500 9000
K42X48X35 42 48 35 35000 76000 9000
K42X50X18 42 50 18 31000 49500 9000
K42X50X20 42 50 20 34500 56500 9000
K42X47X30 ZW 42 47 30 31000 75500 9000
43 K43X48X17 43 48 17 21000 42500 9000
K43X48X27 43 48 27 33000 74500 9000
K43X50X18 43 50 18 30500 53500 8000
45 K45X49X19 45 49 19 17500 40000 8000
K45X50X17 45 50 17 22000 45000 8000
K45X50X27 45 50 27 34000 79500 8000
K45X50X32 TN 45 50 32 38000 90500 8000
K45X52X18 45 52 18 31000 56500 8000
K45X52X21 TN 45 52 21 39500 57500 8000
K45X53X20 45 53 20 38500 66500 8000
K45X53X21 45 53 21 38000 66500 8000
K45X53X22 45 53 22 42000 66500 8000
K45X53X28 45 53 28 51500 97500 8000
K45X59X18 TN 45 59 18 43500 53500 7000
K45X59X32 45 59 32 72500 101500 7000
K45X59X36 45 59 36 75500 108500 7000
K45X51X36 ZW 45 51 36 44500 98500 7000
47 K47X52X17 47 52 17 22800 48500 8000
K47X52X27 47 52 27 34500 82500 8000
K47X53X25 47 53 25 38000 81500 8000
K47X55X28 47 55 28 52500 99500 7500
48 K48X54X19 48 54 19 30000 60500 7500
K48X54X25 48 54 25 31000 91000 7500
50 K50X55X13.5 50 55 13.5 17500 36000 7500
K50X55X17 50 55 17 21400 46500 7500
K50X55X20 50 55 20 26000 59500 7500
K50X55X30 50 55 30 38500 96500 7500
K50X57X18 50 57 18 33000 62500 7000
K50X58X20 50 58 20 35000 61500 7000
K50X58X25 50 58 25 43500 80500 7000
52 K52X57X12 52 57 12 17500 36000 7000
55 K55X60X20 55 60 20 28000 65500 6500
K55X60X27 55 60 27 37500 96500 6500
K55X60X30 55 60 30 40500 10300 6500
K55X61X20 55 61 20 41000 11000 6500
K55X62X18 55 62 18 35000 69500 6500
K55X63X15 55 63 15 245000 40500 6500
K55X63X20 55 63 20 39500 73500 6500
K55X63X25 55 63 25 49500 99500 6500
K55X63X32 55 63 32 61500 129500 6500
K55X60X40ZW 55 60 40 48000 132000 6500
56 K56X61X20 56 61 20 27000 64500 6500
58 K58X63X17 58 63 17 21500 63500 6000
K58X64X19 58 64 19 24500 77500 6000
K58X65X18 58 65 18 34500 69500 6000
K58X65X38ZW 58 65 38 48500 106500 6000
60 K60X65X20 60 65 20 29000 71500 6000
K60X65X30 60 65 30 42000 115500 6000
K60X68X20 60 68 20 43000 84500 5500
K60X68X23 60 68 23 49000 100500 5500
K60X68X25 60 68 25 52500 110500 5500
K60X68X27 60 68 27 59000 120500 6000
K60X75X42 60 75 42 11300 19200 5500
K60X66X33ZW 60 66 33 45500 111500 6000
K60X66X40ZW 60 66 40 57500 150500 5500
K60X68X30ZW 60 68 30 44000 87500 5500
K60X68X34ZW 60 68 34 47500 95500 5500
62 K62X70X40ZW 62 70 40 65500 145500 5500
63 K63X70X21 63 70 21 45000 100500 5500
64 K47X70X16 64 70 16 27500 59500 5500
65 K65X70X20 65 70 20 30000 76500 5500
K65X70X30 65 70 30 43500 93500 5500
K65X73X23 65 73 23 45500 93500 5000
K65X73X30 65 73 30 56500 122500 5000
68 K68X74X20 68 74 20 35000 83500 5000
K68X74X30 68 74 30 46000 117500 5000
K68X74X35 ZW 68 74 35 48000 124500 5000
K68X75X20 68 75 32 53500 127500 4500
70 K70X76X20 70 76 20 35500 85500 4500
K70X76X30 70 76 30 51500 138500 4500
K70X78X25 70 78 25 51500 111500 4500
K70X78X30 70 78 30 59500 134500 4500
K70X80X30 70 80 30 72500 147500 4500
K70X78X46 ZW 70 78 46 77500 18800 4500
72 K72X80X20 80 20 41000 84500 4500  
73 K73X79X20 73 79 20 36500 99500 4500
75 K75X81X20 75 81 20 37000 93500 4500
K75X81X30 75 81 30 51500 142000 4500
K75X83X23 75 83 23 49500 108000 4000
K75X83X30 75 83 30 91500 142000 4000
K75X83X35 ZW 75 83 35 62500 146500 4000
K75X83X40 ZW 75 83 40 72500 176500 4000
80 K80X86X20 80 86 20 38000 97500 4000
K80X86X30 80 86 30 55500 158500 4000
K80X88X30 80 88 30 71500 178500 4000
K80X88X40 ZW 80 88 40 75500 191500 4000
K80X88X46 ZW 80 88 46 87500 23000 4000
85 K85X92X20 85 92 20 44000 15710 3500
90 K90X97X20 90 97 20 44500 112500 3000
K90X98X27 90 98 27 60500 149500 3000
K90X98X30 90 98 30 67500 171500 3000
95 K95X102X20 95 102 20 45500 122500 2900
K95X103X30 ZW 95 103 30 68500 179500 2900
K95X103X40 ZW 95 103 40 82500 227500 2900
100 K100X107X21 100 107 21 47500 126500 2700
K100X108X27 100 108 27 56500 142500 2700
K100X108X30 100 108 30 70500 187500 2700
105 K105X112X21 105 112 21 47000 126500 2500
K105X113X30 105 113 30 71500 196500 2500
110 K110X117X24 110 117 24 55500 157500 2300
K110X118X30 110 118 30 77500 218500 2300
115 K115X123X27 115 123 27 63000 170000 4100
K115X125X35 115 125 35 63000 170000 4100
K115X125X40 115 125 40 65000 175000 4100

Drawn Cup Needle Roller Bearings(Metric and Inch)

Bearing No. Boundary Dimensions(mm) Basic Load Ratings(N) Limiting Speed
HK BK Fw  D C Cr Cor Oil(RPM)
HK0306TN BK0306TN 3 6.5 6 1320 950 60000
HK0408TN BK0408TN 4 8 8 1540 1070 40000
HK0509 BK0509 5 9 9 2200 1790 36000
HK0608 – 6 10 8 1830 1550 32000
HK0609 BK0609 6 10 9 2650 2400 30000
HK0708 – 7 11 8 2800 2150 27000
HK0709 BK0709 7 11 9 2800 2150 27000
HK0808 BK0808 8 12 8 2550 2400 21000
HK571 BK571 8 12 10 3700 3450 21000
HK08×14×10 – 8 14 10 3800 3950 25000
HK08×14×12 – 8 14 12 4100 4320 25000
HK571 BK571 9 13 10 4050 4250 25000
HK571 – 9 13 12 5000 6000 25000
HK1571 BK1571 10 14 10 3900 4800 19000
HK1012 BK1012 10 14 10 5000 6300 19000
HK1015 – 10 14 15 6700 7800 19000
HK10×16×10 – 10 16 10 6800 8800 18000
HK10×16×12 – 10 16 12 6800 8800 18000
HK10×16×15 – 10 16 15 6800 8800 19000
HK1210 BK1210 12 16 10 4150 5800 19000
HK1212 BK1212 12 18 12 3800 5100 15000
HK12×17×12 – 12 17 12 5100 7000 15000
HK12×17×15 – 12 17 15 5100 7000 15000
HK12×17×18 – 12 17 18 5100 7000 15000
HK12×18×12 BK12×18×12 12 18 12 550 6300 17000
HK1312 BK1312 13 19 12 6200 7100 17000
HK13.5×20×12 – 13.5 20 12 6250 7590 16000
HK1412 – 14 20 12 6800 7500 14000
HK1416 – 14 20 16 7300 9000 14000
HK15×20×12 – 15 20 12 5800 6000 14000
HK15×20×16 – 15 20 16 6000 6200 14000
HK15×20×20 – 15 20 20 6100 6400 14000
HK1512 BK1512 15 21 12 7000 8400 14000
HK1514 – 15 21 14 8500 10400 13000
HK1515 – 15 21 15 9100 11400 13000
HK1516 BK1516 15 21 16 9800 11400 14000
HK1522 – 15 21 22 10400 16500 14000
HK15×22×12 – 15 22 12 14300 18400 13000
HK1612 BK1612 16 22 12 7100 9200 14000
HK1614 – 16 22 14 8800 9900 12000
HK1616 BK1616 16 22 16 15710 14300 14000
HK1622 – 16 22 22 11100 17400 14000
HK1712 – 17 23 12 6900 9300 13000
HK1714 – 17 23 14 6800 15710 10000
HK1716 – 17 23 16 8500 12500 10000
HK1718 – 17 23 18 9500 10600 10000
HK17×25×14 – 17 25 14 13100 147000 10000
HK17×25×18 – 17 25 18 9500 10600 11000
HK1812 – 18 24 12 7100 9900 12000
HK1816 BK1816 18 24 16 10600 15300 12000
HK2571 – 20 26 10 5900 7200 10000
HK2014 – 20 26 14 9700 18100 9000
HK2016 BK2016 20 26 16 11700 29100 10000
HK2018 – 20 26 18 7900 12800 9000
HK2571 – 20 26 20 13700 24000 10000
HK2030 – 20 26 30 21800 40000 15710
HK20×27×20 – 20 27 20 26300 47800 9900
HK2210 – 22 28 10 7200 9500 1571
HK2212 BK2212 22 28 12 8100 10400 1571
HK22×29×30 – 22 29 30 19400 33100 9000
HK2512 BK2512 25 32 12 10000 14200 9000
HK2525 BK2525 25 32 25 22200 36700 9000
HK2816 BK2816 28 35 16 15400 22500 8700
HK2820 BK2820 28 35 20 18900 32000 8700
HK3012 BK3012 30 37 12 15710 16200 8100
HK3571 BK3571 30 37 20 19700 33500 8100
HK3224 – 32 39 24 25500 5200 7300
HK3516 BK3516 35 42 16 15700 27500 7100
HK4012 BK4012 40 47 12 14000 24300 6300
HK4512 BK4512 45 52 12 12900 22500 5800
HK5571 BK5571 50 58 20 28000 60000 5300
HK6012 BK6012 60 68 12 12400 29000 4100
               
SCE BCE Fw  D C Cr Cor Oil(RPM)
SCE44 BCE44 6.35 11.112 6.35 1602 1157 35000
SCE45 BCE45 6.35 11.112 7.94 2536 2092 35000
SCE55 BCE55 7.938 12.7 7.94 2892 2625 29000
SCE65 BCE65 9,525 14.288 7.94 2892 2417 25000
SCE67 BCE67 9,525 14.288 11.11 4361 4583 25000
SCE87 BCE87 12.7 17.462 11.11 5918 7387 19000
SCE88 BCE88 12.7 17.462 12.7 6897 9033 19000
SCE810 BCE810 12.7 17.462 15.88 8811 12237 19000
SCE95 BCE95 14.288 19.05 7.94 4049 4717 18000
SCE96 BCE96 14.288 19.05 9.52 5162 6408 18000
SCE98 BCE98 14.288 19.05 12.7 7698 1 0571 18000
SCE910 BCE910 14.288 19.05 15.88 9434 14017 18000
SCE912 BCE912 14.288 19.05 19.05 1571 16465 18000
SCE108 BCE108 15.875 20.638 12.7 8743 12015 16000
SCE1571 BCE1571 15.875 20.638 15.88 10368 16242 16000
SCE1012 BCE1012 15.875 20.638 19.05 12015 19802 16000
SCE116 BCE116 17.462 22.225 9.52 5740 7976 15000
SCE1210 BCE1210 19.05 25.4 15.88 12682 17577 13000
SCE1212 BCE1212 19.05 25.4 19.05 15352 22250 13000
SCE1312 BCE1312 20.638 26.988 19.05 16571 23585 12000
SCE148 BCE148 22.225 28.575 12.7 11125 15797 11000
SCE1412 BCE1412 22.225 28.575 19.05 16910 27145 11000
SCE1516 BCE1516 23.812 30.162 25.4 24030 43165 11000
SCE168 BCE168 25.4 31.72 12.7 12682 19135 10000
SCE1612 BCE1612 25.4 31.72 19.05 18571 30260 10000
SCE1616 BCE1616 25.4 31.72 25.4 24920 45390 10000
SCE188 BCE188 28.575 34.925 12.7 12905 25717 9000
SCE1812 BCE1812 28.575 34.925 19.05 18912 33375 9000
SCE1816 BCE1816 28.575 34.925 25.4 25810 49395 9000
SCE2012 BCE2012 31.75 38.1 19.05 21137 39605 8000
SCE2016 BCE2016 31.75 38.1 25.4 27145 54735 8000
SCE2212 BCE2212 34.925 41.275 19.05 21360 42750 7500
SCE2216 BCE2216 34.925 41.275 25.4 27590 59185 7500
SCE2416 BCE2416 38.1 47.625 25.4 38715 66305 6500
SCE2816 BCE2816 44.45 53.975 25.4 41385 75650 6000
SCE3220 BCE3220 50.8 60.325 31.75 55180 115700 5000

Thrust Needle Roller Bearings(Metric and Inch)

Bearing No.  Boundary Dimensions(mm) Basic Load Ratings(N) Limiting Speed
Dc1 Dc Dw Ca Coa Oil(RPM)
AXK571TN 4 14 2 4450 8000 18000
AXK571TN 5 15 2 4750 9200 17000
AXK0619TN 6 19 2 6800 15500 16000
AXK0821TN 8 21 2 7800 19400 15000
AXK1571 10 24 2 9200 25500 14000
AXK1226 12 26 2 9900 29000 13000
AXK1528 15 28 2 11300 36000 11000
AXK1730 17 30 2 11900 39500 10000
AXK2035 20 35 2 13100 46500 8500
AXK2542 25 42 2 14700 58000 7000
AXK3047 30 47 2 16300 70000 6000
AXK3552 35 52 2 17800 81000 5500
AXK4060 40 60 3 28000 114000 4700
AXK4565 45 65 3 30000 128000 4300
AXK5070 50 70 3 32000 143000 3900
AXK5578 55 78 3 38000 186000 3500
AXK6085 60 85 3 44500 234000 3200
AXK6590 65 90 3 46500 255000 3000
AXK7095 70 95 4 54000 255000 2900
AXK75100 75 100 4 55000 265000 2700
AXK85715 80 105 4 56000 280000 2600
AXK85110 85 110 4 58000 290000 2400
AXK90120 90 120 4 73000 405000 2300
AXK100135 100 135 4 91000 560000 2000
AXK110145 110 145 4 97000 620000 1900
AXK120155 120 155 4 157100 680000 1700
AXK130170 130 170 5 133000 840000 1600
AXK140180 140 180 5 138000 900000 1500
AXK150190 150 190 5 143000 960000 1400
AXK165710 160 200 5 148000 1571000 1300
             
NTA411 6.35 17.45 1.984 4100 9100 28000
NTA512 7.93 19.05 1.984 4600 11100 25000
NTA613 9.52 20.63 1.984 4800 12100 23000
NTA815 12.7 23.8 1.984 5700 16200 19000
NTA916 14.27 25.4 1.984 6200 18200 18000
NTA1018 15.88 28.58 1.984 7000 22500 16000
NTA1220 19.05 31.75 1.984 7800 27000 14000
NTA1423 22.23 36.51 1.984 10400 40900 12000
NTA1625 25.4 39.68 1.984 10700 43900 11000
NTA1828 28.58 44.45 1.984 13500 60900 9800
NTA2031 31.75 49.21 1.984 16400 80900 8800
NTA2233 34.92 52.38 1.984 17400 89400 8200
NTA2435 38.1 55.56 1.984 18900 157100 7700
NTA2840 44.45 63.5 1.984 20600 119600 6900
NTA3244 50.8 69.85 1.984 19500 115200 6200
NTA3446 53.98 73.02 1.984 19900 119600 5900
NTA3648 57.15 76.2 1.984 25710 123600 5700
NTA3650 57.15 79.38 3.175 32900 168100 5300
NTA4052 63.5 82.55 1.984 20700 132100 5200
NTA4458 69.85 92.08 3.175 41700 242400 4600
NTA4860 76.2 95.25 1.984 21900 149400 4500
NTA5266 82.55 104.78 3.175 44900 279700 4000
NTA6074 95.25 117.48 3.175 48900 326400 3500
NTA6681 104.78 128.58 3.175 55600 395400 3200

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

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Rows Number: Double
Load Direction: Radial Bearing
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ball bearing

How does Preload Affect the Performance and Efficiency of Ball Bearings?

Preload is a crucial factor in ball bearing design that significantly impacts the performance, efficiency, and overall behavior of the bearings in various applications. Preload refers to the intentional axial force applied to the bearing’s rolling elements before it is mounted. This force eliminates internal clearance and creates contact between the rolling elements and the raceways. Here’s how preload affects ball bearing performance:

  • Reduction of Internal Clearance:

Applying preload reduces the internal clearance between the rolling elements and the raceways. This eliminates play within the bearing, ensuring that the rolling elements are in constant contact with the raceways. This reduced internal clearance enhances precision and reduces vibrations during operation.

  • Increased Stiffness:

Preloaded bearings are stiffer due to the elimination of internal clearance. This increased stiffness improves the bearing’s ability to handle axial and radial loads with higher accuracy and minimal deflection.

  • Minimized Axial Play:

Preload minimizes or eliminates axial play within the bearing. This is especially important in applications where axial movement needs to be minimized, such as machine tool spindles and precision instruments.

  • Enhanced Rigidity:

The stiffness resulting from preload enhances the bearing’s rigidity, making it less susceptible to deformation under load. This is critical for maintaining precision and accuracy in applications that require minimal deflection.

  • Reduction in Ball Slippage:

Preload reduces the likelihood of ball slippage within the bearing, ensuring consistent contact between the rolling elements and the raceways. This leads to improved efficiency and better load distribution.

  • Improved Running Accuracy:

Preloading enhances the running accuracy of the bearing, ensuring that it maintains precise rotational characteristics even under varying loads and speeds. This is essential for applications requiring high accuracy and repeatability.

  • Optimized Performance at High Speeds:

Preload helps prevent skidding and slipping of the rolling elements during high-speed operation. This ensures that the bearing remains stable, reducing the risk of noise, vibration, and premature wear.

  • Impact on Friction and Heat Generation:

While preload reduces internal clearance and friction, excessive preload can lead to higher friction and increased heat generation. A balance must be struck between optimal preload and minimizing friction-related issues.

  • Application-Specific Considerations:

The appropriate amount of preload depends on the application’s requirements, such as load, speed, accuracy, and operating conditions. Over-preloading can lead to increased stress and premature bearing failure, while under-preloading may result in inadequate rigidity and reduced performance.

Overall, preload plays a critical role in optimizing the performance, accuracy, and efficiency of ball bearings. Engineers must carefully determine the right preload level for their specific applications to achieve the desired performance characteristics and avoid potential issues related to overloading or inadequate rigidity.

ball bearing

What are the Differences between Deep Groove Ball Bearings and Angular Contact Ball Bearings?

Deep groove ball bearings and angular contact ball bearings are two common types of ball bearings, each designed for specific applications and load conditions. Here are the key differences between these two types of bearings:

  • Design and Geometry:

Deep Groove Ball Bearings:

Deep groove ball bearings have a simple design with a single row of balls that run along deep raceways in both the inner and outer rings. The rings are usually symmetrical and non-separable, resulting in a balanced load distribution.

Angular Contact Ball Bearings:

Angular contact ball bearings have a more complex design with two rows of balls, oriented at an angle to the bearing’s axis. This arrangement allows for the transmission of both radial and axial loads, making them suitable for combined loads and applications requiring high precision.

  • Load Carrying Capacity:

Deep Groove Ball Bearings:

Deep groove ball bearings are primarily designed to carry radial loads. They can handle axial loads in both directions, but their axial load-carrying capacity is generally lower compared to angular contact ball bearings.

Angular Contact Ball Bearings:

Angular contact ball bearings are specifically designed to handle both radial and axial loads. The contact angle between the rows of balls determines the bearings’ axial load-carrying capacity. They can handle higher axial loads and are commonly used in applications with thrust loads.

  • Contact Angle:

Deep Groove Ball Bearings:

Deep groove ball bearings have no defined contact angle, as the balls move in a deep groove along the raceways. They are primarily designed for radial loads.

Angular Contact Ball Bearings:

Angular contact ball bearings have a specified contact angle between the rows of balls. This contact angle allows them to carry both radial and axial loads and is crucial for their ability to handle combined loads.

  • Applications:

Deep Groove Ball Bearings:

Deep groove ball bearings are commonly used in applications that primarily require radial loads, such as electric motors, pumps, and conveyor systems. They are also suitable for high-speed operation.

Angular Contact Ball Bearings:

Angular contact ball bearings are used in applications where both radial and axial loads are present, such as in machine tools, automotive wheel hubs, and aerospace components. They are especially useful for applications that require precise axial positioning and handling of thrust loads.

  • Limitations:

Deep Groove Ball Bearings:

Deep groove ball bearings are not as suitable for handling significant axial loads and may experience skidding under certain conditions due to their deep raceways.

Angular Contact Ball Bearings:

Angular contact ball bearings can experience increased heat generation and wear at higher speeds due to the contact angle of the balls.

In summary, the design, load-carrying capacity, contact angle, and applications differ between deep groove ball bearings and angular contact ball bearings. Choosing the appropriate type depends on the specific load conditions and requirements of the application.

ball bearing

How does Lubrication Impact the Performance and Lifespan of Ball Bearings?

Lubrication plays a critical role in the performance and lifespan of ball bearings. Proper lubrication ensures smooth operation, reduces friction, minimizes wear, and prevents premature failure. Here’s how lubrication impacts ball bearings:

  • Friction Reduction:

Lubrication creates a thin film between the rolling elements (balls) and the raceways of the bearing. This film reduces friction by separating the surfaces and preventing direct metal-to-metal contact. Reduced friction results in lower energy consumption, heat generation, and wear.

  • Wear Prevention:

Lubricants create a protective barrier that prevents wear and damage to the bearing’s components. Without proper lubrication, the repeated rolling and sliding of the balls against the raceways would lead to accelerated wear, surface pitting, and eventual failure.

  • Heat Dissipation:

Lubricants help dissipate heat generated during operation. The rolling elements and raceways can generate heat due to friction. Adequate lubrication carries away this heat, preventing overheating and maintaining stable operating temperatures.

  • Corrosion Resistance:

Lubrication prevents moisture and contaminants from coming into direct contact with the bearing’s surfaces. This helps protect the bearing against corrosion, rust, and the formation of debris that can compromise its performance and longevity.

  • Noise Reduction:

Lubricated ball bearings operate quietly because the lubricant cushions and dampens vibrations caused by the rolling motion. This noise reduction is crucial in applications where noise levels need to be minimized.

  • Seal Protection:

Lubricants help maintain the effectiveness of seals or shields that protect the bearing from contaminants. They create a barrier that prevents particles from entering the bearing and causing damage.

  • Improved Efficiency:

Properly lubricated ball bearings operate with reduced friction, leading to improved overall efficiency. This is especially important in applications where energy efficiency is a priority.

  • Lifespan Extension:

Effective lubrication significantly extends the lifespan of ball bearings. Bearings that are properly lubricated experience less wear, reduced fatigue, and a lower likelihood of premature failure.

  • Selection of Lubricant:

Choosing the right lubricant is essential. Factors such as speed, temperature, load, and environmental conditions influence the choice of lubricant type and viscosity. Some common lubricant options include grease and oil-based lubricants.

  • Regular Maintenance:

Regular lubrication maintenance is crucial to ensure optimal bearing performance. Bearings should be inspected and relubricated according to manufacturer recommendations and based on the application’s operating conditions.

In summary, proper lubrication is essential for the optimal performance, longevity, and reliability of ball bearings. It reduces friction, prevents wear, dissipates heat, protects against corrosion, and contributes to smooth and efficient operation in various industrial and mechanical applications.

China Standard Needle Roller Bearing Needle Roller and Cage Assemblies Track Roller Bearing Cam Follower Angular Contact Ball Bearing Spherical Roller Bearing bearing airChina Standard Needle Roller Bearing Needle Roller and Cage Assemblies Track Roller Bearing Cam Follower Angular Contact Ball Bearing Spherical Roller Bearing bearing air
editor by CX 2024-04-16

China best Slewing Bearings-Four Point Contact Ball Slewing Bearing supplier

Product Description

Slewing Bearings-Four Point Contact Ball Slewing Bearing
 

Product Description

Bearing Application Data Sheet or call SBIbearing for free design assistance in selecting the right thin section bearing for your application.
 
About Slewing Rings and Turntable Bearings
Slewing rings and turntable bearings can accommodate axial, radial and moment loads. They are not housed or mounted on a shaft, but are instead mounted directly to a seating surface. The inner and outer rings are supplied with mounting holes and often include internal or external gears. There are several basic types of products. Single-row slewing rings and turntable bearings feature a single row of balls, a standard bearing raceway, and 4 points of contact between the balls and raceway. Double-row products feature 2 rows of ball bearings, 2 raceways, and 8 points of contacts for each ball. Slewing rings and turntable rings with 3 independent rows of rollers are also available. Cross rollers have a single row of rollers with the axes of alternating, adjacent rollers at right angles to 1 another. Slewing rings and turntable bearings with a single row of balls and a single row of rollers are designed for small radial runout and high thrust roads. Typically, inserted raceways are made of wire and use either a ball or roller as the contact element.    
Slewing rings and turntable bearings vary in terms of physical dimensions and operating specifications. Bore size, outside diameter and overall width are the most important physical dimensions to consider. Metric bores are measured in millimeters (mm) and specified according to a standard numbering system that ranges from 00 (10 mm) to 20 (100 mm). Bore sizes 00, 01, 02, and 03 are 10 mm, 12 mm, 15 mm, and 17 mm, respectively. For bore sizes 04 and up, multiplying the bore size by 5 yields the bore diameter. Slewing rings and turntable bearings that are measured in inches (in) or fractions of an inch are also available. For flanged bearings, the outside diameter excludes the size of the flange. Overall width includes the size of the locking collar, if present. In terms of operating specifications, the most important measurements to consider are static axial or thrust load, static radial load, and moment load. Typically, these specifications are measured in pounds  or feet-pounds .
 

Product Parameters

 

Type

Single row 4 point contact ball slewing bearing
Single row crossed cylindrical roller slewing bearings

Double row crossed cylindrical roller slewing bearings

Double row ball slewing bearings
Double row Roller/ball combination slewing bearing
Three-Row Roller Slew Ring Bearing

Wind power bearings

Non-standard customized slewing bearing with inner/ outer gear
Rollng elements Steel ball / Cylinder Roller
Bearing Material 50Mn/42CrMo/42CrMo4V /Customized
Cage Material Nylon/ steel /copper
Structure taper pin, Mounting holes, Inner ring, grease fitting, load plug, seals, roller, spacer balls or separators
Outer diameter 50-10000mm
Bore size 50-10000mm
Mounting hole Through hole/Tapped hole
Raceway hardness 55-62HRC
Inner and outer ring
modulation hardness		 229-269HB/Customized
Gear type No gear, Internal gear, External gear
Certificate SGS, ISO9001

Application area

 Ladle turret, Stacker crane, Bucket wheel machine, Solar heliostat Tracking System, port crane, Cabling machine, tower crane, offshore platform, ferris wheel, Palletizing robot, Rotary metallurgical furnace, can packing machine, Wind blade transporter, shield tunneling machine, tube push bench, excavator

 

Company Profile

Turntable bearing (Slewing ring bearing, Swing Gears, Swing Bearings, Slewing Rings, Slew Rings)
Turntable Bearings, or slewing ring bearings.
We offer bearings of high-precision, high-speed and high-quality, which are widly used in many fields such as aerospace, aviation, navigation, metallurgy, petroleum, chemicals, power generation, pulp and paper, textiles, shipyards, mining machinery, engineering machinery, machinery, railways, automobiles, beer, cigarettes, household appliances, electrical and mechanical manufacturing, and so on. Typical applications include swing bearings (slewing rings) for cranes, excavators, aerial work platforms, gun turrets, radar pedestals, forestry equipment, agricultural vehicles, surveillance equipment, scanner equipment, excavators, cranes, tunneling machines, or material handling equipment.ZTIC offers light- to medium-duty turntable bearings or heavy-duty turntable bearings for even greater load-handling capabilities.
Slewing rings or Turntable bearings are our specialty. ZTIC slewing ring bearings ( turntable bearing) range cover the four-point contact ball slewing ring bearing / Four contact ball slewing bearing( turntable bearing), double direction angular contact thrust ball slewing ring bearing / Double-row ball slewing bearing( turntable bearing), cross roller slewing ring bearing / Crossed roller bearing( turntable bearing), triple-row cylindrical roller slewing ring bearing / Three row roller slewing bearing( turntable bearing).We adopt China state standard (JB/T 2300-1999) to manufacture slewing ring bearing( turntable bearing), also we can adopt other standard (such as API 2C) according to customer requirement. Our best-known product, available in several versions and sizes, for the most varied load conditions. ZTIC bearing also offers light- to medium-duty and heavy-duty turntable bearings, or custom bearings. Submit your online

/* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Standard or Nonstandard: Standard
Feature: Heat-Resistant, Wear-Resistant
Application: Conveyer Equipment, Packaging Machinery, Marine, Mining Equipment, Agricultural Machinery
Surface Treatment: Polishing
Material: Stainless Steel
Dia: 300mm-15000mm
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ball bearing

What are the Challenges Associated with Noise Reduction in Ball Bearings?

Noise reduction in ball bearings is a crucial consideration, especially in applications where noise levels must be minimized for operational efficiency and user comfort. While ball bearings are designed to operate smoothly, there are several challenges associated with reducing noise in their operation:

  • Vibration:

Vibration generated by the movement of rolling elements and raceways can lead to noise. Even minor irregularities in bearing components or the mounting system can cause vibration that translates into audible noise.

  • Bearing Type and Design:

The type and design of the ball bearing can impact noise generation. For example, deep groove ball bearings are known for their quiet operation, while angular contact bearings can generate more noise due to their higher contact angles.

  • Lubrication:

Improper or inadequate lubrication can result in increased friction and wear, leading to noise. Choosing the right lubricant and maintaining proper lubrication levels are essential for reducing noise in ball bearings.

  • Bearing Clearance and Preload:

Incorrect clearance or preload settings can lead to noise issues. Excessive clearance or inadequate preload can cause the rolling elements to impact the raceways, resulting in noise during rotation.

  • Material and Manufacturing Quality:

The quality of materials and manufacturing processes can affect noise levels. Inconsistent or low-quality materials, improper heat treatment, or manufacturing defects can lead to noise generation during operation.

  • Surface Finish:

The surface finish of the rolling elements and raceways can impact noise. Rough surfaces can generate more noise due to increased friction and potential irregularities.

  • Sealing and Shielding:

Seals and shields that protect bearings can influence noise levels. While they are necessary for contamination prevention, they can also cause additional friction and generate noise.

  • Operating Conditions:

External factors such as temperature, speed, and load can influence noise levels. High speeds or heavy loads can amplify noise due to increased stress on the bearing components.

  • Wear and Deterioration:

As ball bearings wear over time, noise levels can increase. Worn components or inadequate lubrication can lead to more significant noise issues as the bearing operates.

To address these challenges and reduce noise in ball bearings, manufacturers and engineers employ various techniques, such as optimizing design, selecting suitable bearing types, using proper lubrication, maintaining accurate preload settings, and ensuring high-quality materials and manufacturing processes. Noise reduction efforts are essential to improve overall product quality, meet noise regulations, and enhance user experience in various applications.

ball bearing

How do Ceramic Ball Bearings Compare to Traditional Steel Ball Bearings in Terms of Performance?

Ceramic ball bearings and traditional steel ball bearings have distinct characteristics that can impact their performance in various applications. Here’s a comparison of how these two types of bearings differ in terms of performance:

  • Material Composition:

Ceramic Ball Bearings:

Ceramic ball bearings use ceramic rolling elements, typically made from materials like silicon nitride (Si3N4) or zirconium dioxide (ZrO2). These ceramics are known for their high hardness, low density, and resistance to corrosion and wear.

Traditional Steel Ball Bearings:

Traditional steel ball bearings use steel rolling elements. The type of steel used can vary, but common materials include chrome steel (52100) and stainless steel (440C). Steel bearings are known for their durability and strength.

  • Friction and Heat:

Ceramic Ball Bearings:

Ceramic bearings have lower friction coefficients compared to steel bearings. This results in reduced heat generation during operation, contributing to higher efficiency and potential energy savings.

Traditional Steel Ball Bearings:

Steel bearings can generate more heat due to higher friction coefficients. This can lead to increased energy consumption in applications where efficiency is crucial.

  • Weight:

Ceramic Ball Bearings:

Ceramic bearings are lighter than steel bearings due to the lower density of ceramics. This weight reduction can be advantageous in applications where minimizing weight is important.

Traditional Steel Ball Bearings:

Steel bearings are heavier than ceramic bearings due to the higher density of steel. This weight may not be as critical in all applications but could impact overall equipment weight and portability.

  • Corrosion Resistance:

Ceramic Ball Bearings:

Ceramic bearings have excellent corrosion resistance, making them suitable for applications in corrosive environments, such as marine or chemical industries.

Traditional Steel Ball Bearings:

Steel bearings are susceptible to corrosion, especially in harsh environments. Stainless steel variants offer improved corrosion resistance but may still corrode over time.

  • Speed and Precision:

Ceramic Ball Bearings:

Ceramic bearings can operate at higher speeds due to their lower friction and ability to withstand higher temperatures. They are also known for their high precision and low levels of thermal expansion.

Traditional Steel Ball Bearings:

Steel bearings can operate at high speeds as well, but their heat generation may limit performance in certain applications. Precision steel bearings are also available but may have slightly different characteristics compared to ceramics.

  • Cost:

Ceramic Ball Bearings:

Ceramic bearings are generally more expensive to manufacture than steel bearings due to the cost of ceramic materials and the challenges in producing precision ceramic components.

Traditional Steel Ball Bearings:

Steel bearings are often more cost-effective to manufacture, making them a more economical choice for many applications.

In conclusion, ceramic ball bearings and traditional steel ball bearings offer different performance characteristics. Ceramic bearings excel in terms of low friction, heat generation, corrosion resistance, and weight reduction. Steel bearings are durable, cost-effective, and widely used in various applications. The choice between the two depends on the specific requirements of the application, such as speed, precision, corrosion resistance, and budget considerations.

ball bearing

How do Ball Bearings Differ from Other Types of Bearings like Roller Bearings?

Ball bearings and roller bearings are two common types of rolling-element bearings, each with distinct designs and characteristics. Here’s a comparison of ball bearings and roller bearings:

  • Design:

Ball Bearings: Ball bearings use spherical balls to separate and reduce friction between the bearing’s inner and outer rings. The balls enable rolling motion and smooth contact, minimizing friction.

Roller Bearings: Roller bearings, as the name suggests, use cylindrical or tapered rollers instead of balls. These rollers have larger contact areas, distributing loads over a broader surface.

  • Friction and Efficiency:

Ball Bearings: Due to the point contact between the balls and the rings, ball bearings have lower friction and are more efficient at high speeds.

Roller Bearings: Roller bearings have a larger contact area, resulting in slightly higher friction compared to ball bearings. They are more suitable for heavy-load applications where efficiency is prioritized over high speeds.

  • Load Capacity:

Ball Bearings: Ball bearings excel at handling light to moderate loads in both radial and axial directions. They are commonly used in applications where smooth rotation and low friction are important.

Roller Bearings: Roller bearings have a higher load-carrying capacity than ball bearings. They can support heavier radial and axial loads and are preferred for applications with significant loads or impact forces.

  • Variability:

Ball Bearings: Ball bearings come in various designs, including deep groove, angular contact, and thrust ball bearings, each suitable for different applications.

Roller Bearings: Roller bearings have diverse types, including cylindrical, spherical, tapered, and needle roller bearings, each optimized for specific load and motion requirements.

  • Speed Capability:

Ball Bearings: The reduced friction in ball bearings makes them suitable for high-speed applications, such as electric motors and precision machinery.

Roller Bearings: Roller bearings can handle higher loads but are generally better suited for moderate to low speeds due to slightly higher friction.

  • Applications:

Ball Bearings: Ball bearings are used in applications where smooth motion, low friction, and moderate loads are essential, such as electric fans, bicycles, and some automotive components.

Roller Bearings: Roller bearings find applications in heavy machinery, construction equipment, automotive transmissions, and conveyor systems, where heavier loads and durability are crucial.

In summary, ball bearings and roller bearings differ in their design, friction characteristics, load capacities, speed capabilities, and applications. The choice between them depends on the specific requirements of the machinery and the type of loads and forces involved.

China best Slewing Bearings-Four Point Contact Ball Slewing Bearing supplierChina best Slewing Bearings-Four Point Contact Ball Slewing Bearing supplier
editor by CX 2024-04-13

China Hot selling Angular Contact Ball Bearing 7200AC 7201AC 7202AC 7203AC 7204AC 7205AC 7206AC 7207AC 7208AC 7209AC 7210AC 7211AC 7212AC 7213AC 7214AC 7215AC 7216AC 7217AC 7218c deep groove ball bearing

Product Description


Angular Contact Ball Bearing
Angular Contact Ball Bearings can bear radial load and axial load at the same time. Can work at higher speeds. The larger the contact angle, the higher the axial load carrying capacity. The contact angle is the angle between the line connecting the contact points of the ball and the raceway in the radial plane and a line perpendicular to the bearing axis. High-precision and high-speed bearings usually take a contact angle of 15 degrees. Under the action of axial force, the contact angle will increase.
Single row angular contact ball bearings: machine tool spindles, high-frequency motors, gas turbines, centrifugal separators, front wheels of small cars, differential pinion shafts, booster pumps, drilling platforms, food machinery, dividing heads, repair welding machines, low-noise cooling towers, electromechanical equipment, coating equipment, machine tool groove plates, arc welding machines
Double row angular contact ball bearings: oil pumps, Roots blowers, air compressors, various transmissions, fuel injection pumps, printing machinery, planetary reducers, extraction equipment, cycloidal reducers, food packaging machinery, electric welding machines, electric soldering irons, square boxes, gravity spray guns, wire stripping machines, axle shafts, inspection and analysis equipment, fine chemical machinery
 

Company Profile
Haisai bearing is a regular model industrial manufacturing enterprise integrating bearing product research and development, design, manufacturing, import and export trade. The company was founded in 1998, covers an area of more than 90,000 square meters, plant area of more than 20,000 square meters, more than 200 employees, more than 20 technical engineers, has passed the international/SO9001:2008,1SO/TS16949:2009 and other quality management system certification. In addition, we have 2 factories (located in ZheJiang and HangZhou respectively) and a trading company. We have completed the high-speed forging of bearing steel dock, automatic high-precision grinding, cryoquenching, unitized automatic constant temperature grinding, intelligent assembly and so on, complete profession production. The product size from 30mm-750mm covers single and double row tapered roller bearing, British garden taper roller bearing, deep groove ball bearing, stainless steel shaft reducer special bearings, agricultural equipment bearings, a total of more than 2500 specifications of products.
We have a professional team of excellent quality, the technical center is equipped with all kinds of testing machines, high-precision testing instruments,material analysis instruments and more than 60 sets, for users to design develop, trial-produce all kinds of special purpose bearings, and do our best to provide high-end customers around the world with the best solutions and good after-sales service!
We has many years of experience in the industrial field of bearing supporting and industrial service, the products are exported to the United States, Germany, Italy, France, the Czech Republic, Russia and other European and American countries and supporting enterprises. We both at home and abroad enjoy a good business reputation!
We promise to be responsible for every set of bearings and industrial products sold! Make every customer satisfied, is our constant pursuit!

 

 

Angular Contact Bearing

7000AC 7200AC 7303AC 7406AC 3304-2RS/ZZ
7001AC 7201AC 7304AC 7407ACP6 3305-2RS/ZZ
7002AC 7202AC 7305AC 7408AC 3306-2RS/ZZ
7003AC 7203AC 7306AC 7409AC 3307-2RS/ZZ
7004AC 7204AC 7307AC 7410AC 3308-2RS/ZZ
7005AC 7205AC 7308AC 7412ACM 3309-2RS/ZZ
7006AC 7206AC 7309AC 7412BM 3310-2RS/ZZ
7007AC 7207AC 7310AC 7414ACM 3311-2RS/ZZ
7008AC 7208AC 7311AC 7414BM 3312-2RS/ZZ
7009AC 7209AC 7312AC 7416ACM 3313-2RS/ZZ
7571AC 7210C 7313AC 7416BM 3314-2RS/ZZ
7011AC 7210AC 7314AC 7418ACM 3315-2RS/ZZ
7012AC 7211AC 7315AC 7418BM 3316-2RS/ZZ
7013AC 7212AC 7315BM   3317-2RS/ZZ
7014AC 7213AC 7317AC 3204-2RS/ZZ 3318-2RS/ZZ
7015AC 7214AC 7317BM 3205-2RS/ZZ 3319-2RS/ZZ
7016AC 7216AC 7318AC 3206-2RS/ZZ 3320-2RS/ZZ
7017AC 7217AC 7318BTN 3207-2RS/ZZ  
7018AC 7218AC 7319AC 3208-2RS/ZZ QJ210
7571AC 7219AC 7319BM 3209-2RS/ZZ QJ211
7571AC 7220AC 7320AC 3210-2RS/ZZ QJ212
7571AC 7221AC 7320BM 3211-2RS/ZZ QJ213
7026AC 7222AC 7322AC 3212-2RS/ZZ QJ214
7571AC 7224AC 7322BM 3213-2RS/ZZ QJ215
7030AC 7228AC 7324ACM 3214-2RS/ZZ QJ216
7032AC 7232AC 7324BM 3215-2RS/ZZ QJ217
7034AC 7236AC 7326ACM 3216-2RS/ZZ QJ218
7036AC 7240AC 7328ACM 3217-2RS/ZZ QJ219
7038AC 7244AC 7328BM 3218-2RS/ZZ QJ220
    7330ACM 3219-2RS/ZZ QJ222
    7332ACM 3220-2RS/ZZ QJ224
    7334ACM   QJ226
    7336ACM   QJ228
    7338ACM   QJ230
    7340ACM   QJ232

 

 

 Certificate Authentication:

transport:

We support shipping by sea, by land, by air and by express.
It can be shipped according to the needs of customers, and it is shipped by sea by default.
 

FAQ:
Q:What’s your after-sales service and warranty?
A: We promise to bear the following responsibilities when defective products were found:
1. Replacements would be sent with goods of your next order;
2. Refund for defective products if customers require.

Q:Do you accept ODM&OEM orders?
A: Yes, we provide ODM&OEM services to worldwide customers, we also customize OEM box and packing as your requirements.

Q:What’s the MOQ?
A: MOQ is 10pcs for standardized products; for customized products, MOQ should be negotiated in advance. There is no MOQ for sample orders.

Q:How long is the lead time?
A: The lead time for sample orders is 3-5 days, for bulk orders is 5-15 days.

Q:Do you offer free samples? 
A: Yes we offer free samples to distributors and wholesalers, however customers should bear freight. We DO NOT offer free samples to end users. 

Q:How to place order?
A: 1. Email us the model, brand and quantity,shipping way of bearings and we will quote our best price for you; 
2. Proforma Invoice made and sent to you as the price agreed by both parts; 
3. Deposit Payment after confirming the PI and we arrange production; 
4. Balance paid before shipment or after copy of Bill of Loading.
  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Contact Angle: 25°
Aligning: Non-Aligning Bearing
Separated: Unseparated
Rows Number: Single
Load Direction: Radial Bearing
Material: Stainless Steel
Samples:
US$ 0.1/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

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Customized Request

ball bearing

Are there Specific Maintenance Practices to Ensure the Longevity of Ball Bearings?

Maintaining ball bearings is essential to ensure their longevity, reliable performance, and prevent premature failure. Proper maintenance practices can extend the lifespan of ball bearings and the equipment they are used in. Here are specific maintenance practices to consider:

  • Regular Lubrication:

Implement a regular lubrication schedule using the appropriate lubricant for the application. Lubrication reduces friction, prevents wear, and helps dissipate heat. Follow manufacturer guidelines for lubricant type, quantity, and frequency.

  • Clean Environment:

Keep the operating environment clean and free from contaminants. Dust, dirt, and debris can infiltrate bearings and cause damage. Use seals or shields to protect bearings from contaminants, especially in harsh environments.

  • Proper Installation:

Ensure correct installation of bearings using proper tools and techniques. Improper installation can lead to misalignment, uneven load distribution, and premature wear. Follow manufacturer recommendations for installation procedures.

  • Regular Inspections:

Perform routine visual inspections to check for signs of wear, damage, or contamination. Regular inspections can help identify issues early and prevent further damage. Pay attention to noise, vibration, and temperature changes.

  • Temperature Monitoring:

Monitor bearing temperatures during operation using infrared thermometers or sensors. Abnormal temperature increases can indicate inadequate lubrication, misalignment, or other problems.

  • Correct Handling:

Handle bearings with care to prevent damage during storage, transportation, and installation. Avoid dropping or subjecting them to impacts that can affect their internal components.

  • Bearing Removal and Replacement:

Follow proper procedures when removing and replacing bearings. Use appropriate tools and techniques to avoid damage to the bearing or the surrounding components.

  • Alignment Maintenance:

Maintain proper shaft and housing alignment to prevent excessive loads and wear on the bearing. Misalignment can lead to increased stress and premature failure.

  • Training and Education:

Provide training to operators and maintenance personnel on proper bearing maintenance and handling practices. Educated personnel are more likely to identify issues and perform maintenance correctly.

  • Documented Records:

Keep records of maintenance activities, inspections, lubrication schedules, and any issues encountered. This documentation helps track the bearing’s performance over time and informs future maintenance decisions.

By implementing these maintenance practices, you can ensure the longevity of ball bearings, minimize downtime, reduce operational costs, and maintain the reliability of the equipment they are a part of.

ball bearing

Are there any Industry Standards or Certifications that Ball Bearings should Meet?

Yes, there are several industry standards and certifications that ball bearings should meet to ensure their quality, performance, and reliability. These standards help manufacturers, engineers, and customers assess the suitability of bearings for specific applications. Some of the key standards and certifications for ball bearings include:

  • ISO Standards:

The International Organization for Standardization (ISO) has developed a series of standards related to ball bearings. ISO 15 defines dimensions, boundary dimensions, and tolerances for radial bearings. ISO 281 specifies dynamic load ratings and calculation methods for bearings’ life calculations.

  • ABEC (Annular Bearing Engineering Committee) Ratings:

ABEC ratings are commonly used in North America to indicate the precision and performance of ball bearings. Ratings range from ABEC 1 (lowest precision) to ABEC 9 (highest precision). However, it’s important to note that ABEC ratings focus primarily on dimensional tolerances and do not encompass all aspects of bearing quality.

  • DIN Standards:

The German Institute for Standardization (Deutsches Institut für Normung, DIN) has published various standards related to ball bearings. DIN 625 covers dimensions for deep groove ball bearings, while DIN 616 provides guidelines for precision angular contact ball bearings.

  • JIS (Japanese Industrial Standards):

JIS standards are used in Japan and internationally to define the characteristics and dimensions of various products, including ball bearings. JIS B 1512 outlines the classification and dimensions of rolling bearings.

  • ASTM (American Society for Testing and Materials) Standards:

ASTM has standards that cover various aspects of bearing testing, performance, and materials. ASTM F2215, for instance, specifies the requirements for ball bearings used in surgical implants.

  • CE Marking:

CE marking indicates that a product complies with European Union health, safety, and environmental requirements. It may be required for bearings used in machinery intended to be sold within the EU market.

  • Industry-Specific Standards:

Various industries, such as aerospace, automotive, medical, and nuclear, have specific standards or certifications that bearings must meet to ensure safety, reliability, and compliance with industry-specific requirements.

  • Quality Management Systems:

Manufacturers that adhere to quality management systems, such as ISO 9001, demonstrate their commitment to consistent product quality and customer satisfaction. Certification to these systems indicates that the manufacturing process follows established protocols and best practices.

When selecting ball bearings, it’s important to consider the relevant standards and certifications that align with the application’s requirements. This ensures that the bearings meet recognized quality and performance criteria, ultimately contributing to reliable and efficient operation.

ball bearing

What are the Different Components that Make up a Typical Ball Bearing?

A typical ball bearing consists of several essential components that work together to reduce friction and support loads. Here are the main components that make up a ball bearing:

  • Outer Ring:

The outer ring is the stationary part of the bearing that provides support and houses the other components. It contains raceways (grooves) that guide the balls’ movement.

  • Inner Ring:

The inner ring is the rotating part of the bearing that attaches to the shaft. It also contains raceways that correspond to those on the outer ring, allowing the balls to roll smoothly.

  • Balls:

The spherical balls are the rolling elements that reduce friction between the inner and outer rings. Their smooth rolling motion enables efficient movement and load distribution.

  • Cage or Retainer:

The cage, also known as the retainer, maintains a consistent spacing between the balls. It prevents the balls from touching each other, reducing friction and preventing jamming.

  • Seals and Shields:

Many ball bearings include seals or shields to protect the internal components from contaminants and retain lubrication. Seals provide better protection against contaminants, while shields offer less resistance to rotation.

  • Lubricant:

Lubrication is essential to reduce friction, wear, and heat generation. Bearings are typically filled with lubricants that ensure smooth movement between the balls and raceways.

  • Flanges and Snap Rings:

In some designs, flanges or snap rings are added to help position and secure the bearing in its housing or on the shaft. Flanges prevent axial movement, while snap rings secure the bearing radially.

  • Raceways:

Raceways are the grooved tracks on the inner and outer rings where the balls roll. The shape and design of the raceways influence the bearing’s load-carrying capacity and performance.

  • Anti-Friction Shield:

In certain high-speed applications, a thin anti-friction shield can be placed between the inner and outer rings to minimize friction and heat generation.

These components work together to enable the smooth rolling motion, load support, and reduced friction that characterize ball bearings. The proper design and assembly of these components ensure the bearing’s optimal performance and longevity in various applications.

China Hot selling Angular Contact Ball Bearing 7200AC 7201AC 7202AC 7203AC 7204AC 7205AC 7206AC 7207AC 7208AC 7209AC 7210AC 7211AC 7212AC 7213AC 7214AC 7215AC 7216AC 7217AC 7218c deep groove ball bearingChina Hot selling Angular Contact Ball Bearing 7200AC 7201AC 7202AC 7203AC 7204AC 7205AC 7206AC 7207AC 7208AC 7209AC 7210AC 7211AC 7212AC 7213AC 7214AC 7215AC 7216AC 7217AC 7218c deep groove ball bearing
editor by CX 2024-04-12

China factory External Gear Teeth Ball Bearing 81-40 2240/2-07600 Four Point Contact Slewing Bearing wholesaler

Product Description

External Gear Teeth Ball Bearing 81-40 2240/2-5710 Four Point Contact Slewing Bearing 

Four-point contact ball slewing turntable bearings
consist of 2 ring seats. Compact structure, light weight, steel ball and arc track contact at 4 points, can bear axial force, radial force and overturning moment at the same time, has strong dynamic load.

Single row cross roller slewing bearing
Composed of 2 or 3 rings. compact structure, light weight, high manufacturing accuracy, small assembly gap and high requirement for installation accuracy. Rollers are 1:1 cross-arranged.
Can be bear axial force, overturning moment and large radial force at the same time,and widely used in lifting transportation, construction machinery and precesion products.

Double row ball slewing bearings
This kind of bearings can support high static loads with simple structures. They are mainly used in situations with variation load position and direction and continuously rotating. Main applications of this kind of bearings are deck hoisting, mining and material handling etc.

Three row roller slewing bearing
Three row roller bearing CZPT to bear all kinds of loads at the same time, it is the largest 1 of the 4 structural products with large axle and radial dimensions and firm structure. Especially suitable for heavy machinery requiring larger diameter, such as bucket wheel stacker and reclaimer, wheel crane, marine crane, port crane, ladle turret,large tonnage truck crane,heavy machinery and so on.

 

Type • Single row 4 point contact ball slewing bearing 
• Single row crossed cylindrical roller slewing bearings
• Double row ball slewing bearings
•Double row Roller/ball combination slewing bearing
•Three-Row Roller Slew Ring Bearing
Rolling elements Steel ball / Cylinder Roller
Rolling elements Material GCr5/GCr15SiMn/Customized
Bearing Material 50Mn/42CrMo/42CrMo4V /Customized
Cage Material Nylon/ steel /copper
Structure taper pin , Mounting holes,Inner ring ,grease fitting,load plug, seals , roller ,spacer balls or separators
Outer diameter 50-10000mm
Bore size 50-10000mm
Mounting hole Through hole/Tapped hole
Raceway hardness 55-62HRC
Inner and outer ring 
modulation hardness		 229-269HB/Customized
Gear type No gear ,Internal gear , External gear.
Embellish grease EP2 lithium lubricating grease
Certificate ABS.BV,DNV,ISO9001,GL,3.1,3.2
Application area Ladle turret,Stacker crane,Bucket wheel machine,Solar heliostat Tracking System,port crane, Cabling machine,tower crane , offshore platform,ferris wheel, Palletizing robot,Rotary metallurgical furnace,can packing machine,Wind blade transporter,shield tunneling machine,tube push bench,excavator
Brand Name LYMC
Place of Origin HangZhou ZheJiang
Warranty 12 months
Payment term T/T is our first choice

Packing details

 1,Filling with anti-rust oil
2.Corved with Plastic paper
3.Corved with kraft paper 
4.Corved with Blue tie 
5.Put in wooden box

Product Process
Application:

 

– Excavators – Drilling rigs – Mining Equipments – Cranes   -Offshore Equipments  – Vehicles  – Machine Tools  – Wind Turbines

About Us:
HangZhou MC Bearing Technology Co.,Ltd (LYMC),who is manufacture located in bearing zone, focus on Slewing bearing, cross roller bearing and pinion,Dia from 50mm-8000mm, Our team with technical and full experience in the bearing industry.
*Professional in researching, developing, producing & marketing high precision bearings for 16 years;
*Many series bearings are on stock; Factory directly provide, most competitive price;
*Advanced CNC equipment, guarantee product accuracy & stability;
*One stop purchasing, product include cross roller bearing, rotary table bearing, robotic bearing, slewing bearing, angular contact ball bearing, large and extra large custom made bearing, diameter from 50~9000mm;
*Excellent pre-sale & after sale service. We can go to customers’ project site if needed.
*Professional technical & exporting team ensure excellent product design, quotation, delivering, documentation & custom clearance.

Our Service:

FAQ:
1.Q: Are you trading company or manufacturer ?
A: We are professional slewing bearing manufacturer with 20 years’ experience.
2.Q: How long is your delivery time?
A: Generally it is 4-5 days if the goods are in stock. or it is 45 days if the goods are not in
stock, Also it is according to quantity.
3.Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample, it is extra.
4.Q: What is your terms of payment ?
A: Payment=1000USD, 30% T/T in advance, balance before shipment.
5.Q: Can you provide special customization according to the working conditions?
A: Sure, we can design and produce the slewing bearings for different working conditions.
6.Q: How about your guarantee?
A: We provide lifelong after-sales technical service. 
  /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Standard or Nonstandard: Standard
Feature: High Speed, Cold-Resistant, Corrosion-Resistant, Heat-Resistant
Sealing Gland: Sealed On Both Sides
Rolling-Element Number: Double-Row
Roller Type: Straight Raceway
Material: 50mn/42CrMo
Samples:
US$ 240/Piece
1 Piece(Min.Order)

|
Request Sample

Customization:
Available

|

Customized Request

ball bearing

How does Preload Affect the Performance and Efficiency of Ball Bearings?

Preload is a crucial factor in ball bearing design that significantly impacts the performance, efficiency, and overall behavior of the bearings in various applications. Preload refers to the intentional axial force applied to the bearing’s rolling elements before it is mounted. This force eliminates internal clearance and creates contact between the rolling elements and the raceways. Here’s how preload affects ball bearing performance:

  • Reduction of Internal Clearance:

Applying preload reduces the internal clearance between the rolling elements and the raceways. This eliminates play within the bearing, ensuring that the rolling elements are in constant contact with the raceways. This reduced internal clearance enhances precision and reduces vibrations during operation.

  • Increased Stiffness:

Preloaded bearings are stiffer due to the elimination of internal clearance. This increased stiffness improves the bearing’s ability to handle axial and radial loads with higher accuracy and minimal deflection.

  • Minimized Axial Play:

Preload minimizes or eliminates axial play within the bearing. This is especially important in applications where axial movement needs to be minimized, such as machine tool spindles and precision instruments.

  • Enhanced Rigidity:

The stiffness resulting from preload enhances the bearing’s rigidity, making it less susceptible to deformation under load. This is critical for maintaining precision and accuracy in applications that require minimal deflection.

  • Reduction in Ball Slippage:

Preload reduces the likelihood of ball slippage within the bearing, ensuring consistent contact between the rolling elements and the raceways. This leads to improved efficiency and better load distribution.

  • Improved Running Accuracy:

Preloading enhances the running accuracy of the bearing, ensuring that it maintains precise rotational characteristics even under varying loads and speeds. This is essential for applications requiring high accuracy and repeatability.

  • Optimized Performance at High Speeds:

Preload helps prevent skidding and slipping of the rolling elements during high-speed operation. This ensures that the bearing remains stable, reducing the risk of noise, vibration, and premature wear.

  • Impact on Friction and Heat Generation:

While preload reduces internal clearance and friction, excessive preload can lead to higher friction and increased heat generation. A balance must be struck between optimal preload and minimizing friction-related issues.

  • Application-Specific Considerations:

The appropriate amount of preload depends on the application’s requirements, such as load, speed, accuracy, and operating conditions. Over-preloading can lead to increased stress and premature bearing failure, while under-preloading may result in inadequate rigidity and reduced performance.

Overall, preload plays a critical role in optimizing the performance, accuracy, and efficiency of ball bearings. Engineers must carefully determine the right preload level for their specific applications to achieve the desired performance characteristics and avoid potential issues related to overloading or inadequate rigidity.

ball bearing

Are there any Industry Standards or Certifications that Ball Bearings should Meet?

Yes, there are several industry standards and certifications that ball bearings should meet to ensure their quality, performance, and reliability. These standards help manufacturers, engineers, and customers assess the suitability of bearings for specific applications. Some of the key standards and certifications for ball bearings include:

  • ISO Standards:

The International Organization for Standardization (ISO) has developed a series of standards related to ball bearings. ISO 15 defines dimensions, boundary dimensions, and tolerances for radial bearings. ISO 281 specifies dynamic load ratings and calculation methods for bearings’ life calculations.

  • ABEC (Annular Bearing Engineering Committee) Ratings:

ABEC ratings are commonly used in North America to indicate the precision and performance of ball bearings. Ratings range from ABEC 1 (lowest precision) to ABEC 9 (highest precision). However, it’s important to note that ABEC ratings focus primarily on dimensional tolerances and do not encompass all aspects of bearing quality.

  • DIN Standards:

The German Institute for Standardization (Deutsches Institut für Normung, DIN) has published various standards related to ball bearings. DIN 625 covers dimensions for deep groove ball bearings, while DIN 616 provides guidelines for precision angular contact ball bearings.

  • JIS (Japanese Industrial Standards):

JIS standards are used in Japan and internationally to define the characteristics and dimensions of various products, including ball bearings. JIS B 1512 outlines the classification and dimensions of rolling bearings.

  • ASTM (American Society for Testing and Materials) Standards:

ASTM has standards that cover various aspects of bearing testing, performance, and materials. ASTM F2215, for instance, specifies the requirements for ball bearings used in surgical implants.

  • CE Marking:

CE marking indicates that a product complies with European Union health, safety, and environmental requirements. It may be required for bearings used in machinery intended to be sold within the EU market.

  • Industry-Specific Standards:

Various industries, such as aerospace, automotive, medical, and nuclear, have specific standards or certifications that bearings must meet to ensure safety, reliability, and compliance with industry-specific requirements.

  • Quality Management Systems:

Manufacturers that adhere to quality management systems, such as ISO 9001, demonstrate their commitment to consistent product quality and customer satisfaction. Certification to these systems indicates that the manufacturing process follows established protocols and best practices.

When selecting ball bearings, it’s important to consider the relevant standards and certifications that align with the application’s requirements. This ensures that the bearings meet recognized quality and performance criteria, ultimately contributing to reliable and efficient operation.

ball bearing

What are the Primary Benefits of Using Ball Bearings in Machinery and Equipment?

Ball bearings offer several primary benefits when used in machinery and equipment. Their design and functionality provide advantages that contribute to the efficient and reliable operation of various applications. Here are the key benefits:

  • Reduced Friction:

One of the primary benefits of ball bearings is their ability to minimize friction between moving parts. The rolling motion of the balls reduces the contact area and sliding friction, leading to smoother operation and less energy loss due to frictional heating.

  • Efficient Load Support:

Ball bearings are engineered to support both radial and axial loads, making them versatile for applications with multidirectional forces. This load-bearing capability allows machinery to handle different types of loads while maintaining performance and stability.

  • Smooth Rotation:

Ball bearings enable smooth and precise rotational movement. The rolling motion of the balls provides consistent motion with minimal resistance, ensuring that machinery operates smoothly and without jerks.

  • High-Speed Capability:

Due to their low friction and efficient rolling action, ball bearings are suitable for high-speed applications. They allow machinery and equipment to achieve and maintain high rotational speeds without excessive wear or heat buildup.

  • Reduced Wear and Maintenance:

The reduced friction in ball bearings leads to lower wear on components. This results in longer service intervals and reduced maintenance requirements, saving both time and maintenance costs.

  • Energy Efficiency:

By minimizing friction and reducing energy losses, ball bearings contribute to the overall energy efficiency of machinery. This is particularly important in applications where energy consumption is a concern.

  • Versatility:

Ball bearings come in various types, sizes, and configurations, allowing them to be used in a wide range of machinery and equipment. They can be customized to suit specific application requirements.

  • Reliability and Longevity:

Ball bearings are designed to withstand heavy loads and harsh operating conditions. Their durability and resistance to wear ensure reliable performance and an extended operational life.

  • Quiet Operation:

Ball bearings contribute to quiet machinery operation due to the smooth rolling motion of the balls. This is particularly important in applications where noise reduction is a consideration.

In summary, the primary benefits of using ball bearings in machinery and equipment include reduced friction, efficient load support, smooth rotation, high-speed capability, reduced wear and maintenance, energy efficiency, versatility, reliability, and quiet operation. These benefits collectively enhance the performance and longevity of machinery across various industries.

China factory External Gear Teeth Ball Bearing 81-40 2240/2-07600 Four Point Contact Slewing Bearing wholesalerChina factory External Gear Teeth Ball Bearing 81-40 2240/2-07600 Four Point Contact Slewing Bearing wholesaler
editor by CX 2024-04-11