Product Description
Product Description
BEARING INNER RING
A steel ball with a common steel ball or roller rolling on the outer surface of the inner ring.
RUBBER SEALAFTER CODE: RS 2RS Z ZZ
The sealing material is made of skeleton rubber and has good dust-proof effect, which can prevent any foreign matter from invading and dust and water in a harsh environment.
Main Features1.Bearing moves very Fast & Quiet, with very smooth hand feeling
2.High precision, long life, low noise
3.High-end technology
4.Good after-sales service
Company Profile
HangZhou CZPT Machinery Technology Co., Ltd is industry and trade company which modern enterprise integrating scientific research, development, manufacture and trading. Based on integrity, responsibility and cooperation, our company have professional R&D and sales team, providing one-stop service for customers. Our company mainly products is Bearing, Jack Hammer, Screw Air Compressor, Piston Air Compressor and Other Machinery Hardware Product etc.
After many years of production and research and development, we have obtained more than 20 national patents. The products are sold at home and abroad and are well received by customers. Our products sold at home and abroad, after get the self-managemert import and export rights, our products are exported to Vietnam, Indonesia, Philippines, Cambodia, Pakistan, Afghanistan and other countries and regions.
Application
Electric motors and generators
Agriculture
Material handling
Industrial transmissions
Food and beverage
Industrial pumps
Industrial fans
Two and 3 wheelers
Cars and light trucks
Packaging & Shipping
Customer feedback
FAQ
Q1: Are you factory or trade company?
A1: We are factory. And we have our own trading company.
Q2: What the exactly address of your factory?
A2: Our company is located in Xihu (West Lake) Dis. East Road, Xihu (West Lake) Dis. District, HangZhou, ZHangZhoug, China.
Q3: Will you provide some free samples?
A3: Yes, sure, but the freight need to be paid by you.
Q4: Which payment term can you accept?
A4: 30% T/T in advance, 70% T/T against the B/L copy.
Q5: Can you accept OEM orders?
A5: Yes, with professional design team, OEM orders are highly welcome.
Q6: Which trade term can you accept?
A6: Available trade terms: FOB, CIF, CFR, EXW, CPT, etc.
/* 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(/(.*?):(.*)$/))&&1
| After-sales Service: | Provided |
|---|---|
| Type: | Engine Bearing |
| Material: | Chrome Steel |
| Tolerance: | P0 |
| Clearance: | C2 |
| ABS: | Without ABS |
| Samples: |
US$ 0/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
What are the Common Signs of Wear or Damage in Ball Bearings that Indicate the Need for Replacement?
Ball bearings are subjected to wear and stress during operation, and over time, they may exhibit signs of damage or deterioration that warrant replacement. Recognizing these signs is crucial to prevent catastrophic failure and ensure safe and reliable operation. Here are the common signs of wear or damage in ball bearings:
- Unusual Noise:
If you hear unusual grinding, clicking, or rumbling noises coming from the bearing during operation, it may indicate worn-out or damaged components. Unusual noise suggests that the bearing is no longer operating smoothly.
- Vibration:
Excessive vibration in the machinery can be a sign of bearing wear. Vibrations can result from uneven wear, misalignment, or damaged components within the bearing.
- Increased Temperature:
Higher operating temperatures than usual may indicate increased friction due to inadequate lubrication, wear, or other issues. Monitoring the bearing’s temperature can help identify potential problems.
- Irregular Movement:
If you notice irregular movement, jerking, or sticking during rotation, it could be a sign that the bearing is no longer operating smoothly. This may be due to damaged rolling elements or raceways.
- Reduced Performance:
If the machinery’s performance has decreased, it may be due to a compromised bearing. Reduced efficiency, increased energy consumption, or a decline in overall performance could be indicators of bearing wear.
- Visible Wear or Damage:
Inspect the bearing for visible signs of wear, such as pitting, scoring, or discoloration on the rolling elements or raceways. Severe wear or damage is a clear indication that the bearing needs replacement.
- Leakage or Contamination:
If there is evidence of lubricant leakage, contamination, or the presence of foreign particles around the bearing, it suggests that the seal or shield may be compromised, leading to potential damage.
- Looseness or Excessive Play:
If you can feel excessive play or looseness when manually moving the bearing, it could indicate worn-out components or misalignment.
- Reduced Lifespan:
If the bearing’s expected lifespan is significantly shorter than usual, it may be due to inadequate lubrication, excessive loads, or improper installation, leading to accelerated wear.
- Frequent Failures:
If the bearing is consistently failing despite regular maintenance and proper use, it could indicate a chronic issue that requires addressing, such as inadequate lubrication or misalignment.
It’s important to conduct regular inspections, monitor performance, and address any signs of wear or damage promptly. Replacing worn or damaged ball bearings in a timely manner can prevent further damage to machinery, reduce downtime, and ensure safe and efficient operation.
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.
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.
editor by CX 2024-04-16
China best Metal Guard Effective Air Flow Axial Fan Ball Bearing with UL, CE with high quality
Product Description
| Model | F2E-220B-230 | F2E-220B-115 | |
| Bearing | ball | ball | |
| Voltage V | 220/230 | 110/115 | |
| Frequency HZ | 50/60 | 50/60 | |
| Current(A)) | 0.38/0.36 | 0.90 | |
| Power(W) | 58/60 | 65 | |
| Speed(r/min) | 2480/2580 | 2600 | |
| Air flow(m³/min) | 580 | 580 | |
| Noise(dB) | 64/66 | 65 | |
Why should we choose Leipole products?
A: LEIPOLE is a leading manufacture produce terminal blocks, fan filters, thermostats, heaters, and transformer. It also provides other panel accessories such as cabinet lighting, bus bar system, distribution boxes and cable glands to meet various customers from different industry fields.
How can we ensure product quality from Leipole?
A: LEIPOLE believes QUALITY is critical. We committed ISO9001 from paper to real work in each position in the company. From supplier audits and incoming material inspection to quality control and final packing, we take each step very carefully to assure our product quality. We also provide 12 months warranty into operation.
Where can we buy Leipole products?
A: LEIPOLE has been building its sales network throughout the world. You can buy from your local distributors from our 11 partners in different countries and regions. For those clients who are unable to buy in their local, we can provide direct sales from our office in China or nearest distributor.
I am interested in becoming a distributor of Leipole Electric, how can I apply?
A: LEIPOLE welcomes every potential customers to work together in the future, please apply for the distributor by sending email to us.
/* 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
| Material: | Aluminum Fan |
|---|---|
| Blade Material: | Plastic |
| Type: | Axial Fan |
| Electric Current Type: | AC |
| Mounting: | Free Standing |
| Certification: | RoHS, ISO, CE, CCC |
| Customization: |
Available
| Customized Request |
|---|
What are the Common Signs of Wear or Damage in Ball Bearings that Indicate the Need for Replacement?
Ball bearings are subjected to wear and stress during operation, and over time, they may exhibit signs of damage or deterioration that warrant replacement. Recognizing these signs is crucial to prevent catastrophic failure and ensure safe and reliable operation. Here are the common signs of wear or damage in ball bearings:
- Unusual Noise:
If you hear unusual grinding, clicking, or rumbling noises coming from the bearing during operation, it may indicate worn-out or damaged components. Unusual noise suggests that the bearing is no longer operating smoothly.
- Vibration:
Excessive vibration in the machinery can be a sign of bearing wear. Vibrations can result from uneven wear, misalignment, or damaged components within the bearing.
- Increased Temperature:
Higher operating temperatures than usual may indicate increased friction due to inadequate lubrication, wear, or other issues. Monitoring the bearing’s temperature can help identify potential problems.
- Irregular Movement:
If you notice irregular movement, jerking, or sticking during rotation, it could be a sign that the bearing is no longer operating smoothly. This may be due to damaged rolling elements or raceways.
- Reduced Performance:
If the machinery’s performance has decreased, it may be due to a compromised bearing. Reduced efficiency, increased energy consumption, or a decline in overall performance could be indicators of bearing wear.
- Visible Wear or Damage:
Inspect the bearing for visible signs of wear, such as pitting, scoring, or discoloration on the rolling elements or raceways. Severe wear or damage is a clear indication that the bearing needs replacement.
- Leakage or Contamination:
If there is evidence of lubricant leakage, contamination, or the presence of foreign particles around the bearing, it suggests that the seal or shield may be compromised, leading to potential damage.
- Looseness or Excessive Play:
If you can feel excessive play or looseness when manually moving the bearing, it could indicate worn-out components or misalignment.
- Reduced Lifespan:
If the bearing’s expected lifespan is significantly shorter than usual, it may be due to inadequate lubrication, excessive loads, or improper installation, leading to accelerated wear.
- Frequent Failures:
If the bearing is consistently failing despite regular maintenance and proper use, it could indicate a chronic issue that requires addressing, such as inadequate lubrication or misalignment.
It’s important to conduct regular inspections, monitor performance, and address any signs of wear or damage promptly. Replacing worn or damaged ball bearings in a timely manner can prevent further damage to machinery, reduce downtime, and ensure safe and efficient operation.
What Role do Seals and Shields Play in Protecting Ball Bearings from Dirt and Debris?
Seals and shields are critical components of ball bearings that play a crucial role in protecting them from dirt, debris, moisture, and contaminants in various applications. These protective features help maintain the integrity of the bearing’s internal components and ensure reliable operation. Here’s how seals and shields contribute to bearing protection:
- Contaminant Exclusion:
Seals and shields create a physical barrier between the external environment and the bearing’s interior. They prevent dust, dirt, water, and other contaminants from entering the bearing and coming into contact with the rolling elements and raceways.
- Lubrication Retention:
Seals and shields help retain lubrication within the bearing. They prevent the lubricant from escaping and contaminants from entering, ensuring that the bearing remains properly lubricated for smooth operation and reduced friction.
- Corrosion Prevention:
Seals and shields protect bearing components from exposure to moisture and corrosive substances. By preventing moisture ingress, they help extend the bearing’s lifespan by minimizing the risk of corrosion-related damage.
- Extended Bearing Life:
Seals and shields contribute to the overall longevity of the bearing by reducing wear and damage caused by contaminants. They help maintain a clean internal environment, which promotes proper rolling contact and minimizes the risk of premature failure.
- Enhanced Performance in Harsh Environments:
In applications exposed to harsh conditions, such as outdoor machinery or industrial settings, seals and shields are vital. They protect bearings from abrasive particles, chemicals, and extreme temperatures, ensuring reliable performance despite challenging conditions.
- Noise and Vibration Reduction:
Seals and shields can help reduce noise and vibration generated by the bearing. They provide additional damping and stability, contributing to smoother operation and enhanced user comfort in noise-sensitive applications.
- Customized Protection:
Manufacturers offer a variety of seal and shield designs to suit different application requirements. Some seals provide higher levels of protection against contamination, while others are designed for high-speed or high-temperature environments.
- Trade-Offs:
While seals and shields offer significant benefits, they can also introduce some friction due to contact with the bearing’s inner or outer ring. Engineers must balance the level of protection with the desired operating characteristics, considering factors like friction, speed, and environmental conditions.
Overall, seals and shields play a vital role in maintaining the integrity and performance of ball bearings. By effectively preventing contaminants from entering and preserving lubrication, they ensure the smooth and reliable operation of machinery and equipment in a wide range of applications.
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.
editor by CX 2024-04-15
China high quality Lm8uu Lm10uu Lm12uu Linear Ball Bearings for 3D Printer bearing assembly
Product Description
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SHAC linear bearing series: |
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|
LM…UU: 3-150MM,LME…UU: 4-80MM,LMF…UU:6-100MM,LMEF…UU:8-60MM,LMK…UU:6-100MM |
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LMEK…UU:8-60MM,LMH…UU:6-30MM,LM…LUU: 3-60MM,LME…LUU: 8-60MM,LMF…LUU:6-600MM |
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LMEF…LUU:8-60MM,LMK…LUU:6-60MM,LMEK…LUU:8-60MM,LMH…LUU:6-30MM |
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ST…UU:8-100UU |
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KH0824,KH1026,KH1228,KH1428,KH1630,KH2030,KH2540,KH3050,KH4060,KH5070 |
Our factory
We are ZheJiang technology joint venture factory in China, professional manufacturer linear CZPT and ball screw to global market with good quality and reasonable price. with ISO9001 & ISO14001 approved.
Mainly products SHAC brand linear CZPT is interworking with HIWIN linear guide,ball screw parameter same as TBI ballscrew. We already export our products to some market such as USA, Europe, East Korea,South America, North America,Southeast Asia,Indian,etc.
FAQ
Q1: Do you accept small order?
A: If your order bearings are our standard size, we accept even 1pcs.
Q2: Can I get free sample?
A: Yes. Limited,free sample available, freight cost must be paid by your side.
Q3: Are you factory or trade company?
A: We are manufacturer, ZheJiang technology team joint venture factory.
Q4: Can we mark our brand on your bearings and packing?
A: Yes, we support OEM your brand, the details let’s negotiation.
Q5: How long is the delivery?
A: Small orders usually takes 3-7 days,big order usually 20-35 days, depending on orders quantity and whether are standard size.
/* 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
| Feature: | Running Smoothly |
|---|---|
| Function: | Ordinary |
| Series: | LM |
| Material: | Bearing Steel |
| Type: | Lm,Lmf ,Lmk,Lme |
| Brand: | Shac |
| Customization: |
Available
| Customized Request |
|---|
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.
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.
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.
editor by CX 2024-04-15
China Professional Auto Bearing,Wheel Bearing,Deep Groove Ball Bearing,N208,2208,Nu208,32208,Nj208,42208,NF208,12208,Ncl208,102208,Nup208,192208,Rn208,502208,Rnu208,292208, bearing engineering
Product Description
Cylindrical roller bearings are available in a wide range of designs, series, variants and sizes. The main design differences are the number of roller rows and the inner/outer ring flanges as well as cage designs and materials.
The bearings can meet the challenges of applications faced with heavy radial loads and high speeds. Accommodating axial displacement (except for bearings with flanges on both the inner and outer rings), they offer high stiffness, low friction and long service life.
Cylindrical roller bearings are also available in sealed or split designs. In sealed bearings, the rollers are protected from contaminants, water and dust, while providing lubricant retention and contaminant exclusion. This provides lower friction and longer service life. Split bearings are intended primarily for bearing arrangements which are difficult to access, such as crank shafts, where they simplify maintenance and replacements.
Features and benefits
- High load carrying capacity
- High stiffness
- Accommodate axial displacement
Except for bearings with flanges on both the inner and outer rings. - Low friction
The open flange design, - Together with the roller end design and surface finish, promote lubricant film formation resulting in lower friction and higher axial load carrying capability.
- Long service life
The logarithmic roller profile reduces edge stresses at the roller/raceway contact and sensitivity to misalignment and shaft deflection. - Enhanced operational reliability
The surface finish on the contact surfaces of the rollers and raceways supports the formation of a hydrodynamic lubricant film. - Separable and interchangeable
The separable components of cylindrical roller bearings are interchangeable. This facilitates mounting and dismounting, as well as maintenance inspections.
Applications
Cylindrical roller bearings have characteristics that make them suitable for use in many types of industrial applications and essential for some. They can be used in both locating and non-locating bearing positions in bearing arrangements in for example:
- Stationary gearboxes
- Automotive gearboxes
- Electric motors
- Vibration motors
- Wind turbines
- Off-highway equipment
- Pumps and compressors
- Material handling equipment
- Textile machinery
- Rail vehicles
- Rolling mills
Types NU, N, NNU, and NN are suitable as free-end bearings.
Types NJ and NF can sustain limited axial loads in 1 direction.
Types NH and NUP can be used as fixed-end bearings.
NH-type cylindrical roller bearings consist of the NJ-type cylindrical roller bearings and HJ-type L-shaped thrust collars.
The inner ring loose rib of an NUP-type cylindrical roller bearing should be mounted so that the marked side is on the outside.
| Parameters of Bearing | ||||||||
| Model | d | D | B | Cr | Cor | Limiting Speed (r/min) | Mass | |
| (mm) | (mm) | (mm) | (kN) | (kN) | Grease | Oil | (kg) | |
| NU202 | 15 | 35 | 11 | 7.98 | 5.5 | 15000 | 19000 | – |
| NU203 | 17 | 40 | 12 | 9.12 | 7 | 14000 | 18000 | – |
| NU303 | 17 | 47 | 14 | 12.8 | 10.8 | 13000 | 17000 | 0.147 |
| NU1004 | 20 | 42 | 12 | 10.5 | 9.2 | 13000 | 17000 | 0.09 |
| NU204E | 20 | 47 | 14 | 25.8 | 24 | 12000 | 16000 | 0.117 |
| NU2204E | 20 | 47 | 18 | 30.8 | 30 | 12000 | 16000 | 0.149 |
| NU3O4E | 20 | 52 | 15 | 29 | 25.5 | 11000 | 15000 | 0.155 |
| NU2304E | 20 | 52 | 21 | 39.2 | 37.5 | 10000 | 14000 | 0.216 |
| NU1005 | 25 | 47 | 12 | 11 | 10.2 | 11000 | 15000 | 0.1 |
| NU205E | 25 | 52 | 15 | 27.5 | 26.8 | 11000 | 14000 | 0.14 |
| NU2205E | 25 | 52 | 18 | 32.8 | 33.8 | 11000 | 14000 | 0.168 |
| NU305E | 25 | 62 | 17 | 38.5 | 35.8 | 9000 | 12000 | 0.251 |
| NU2305E | 25 | 62 | 24 | 53.2 | 54.5 | 9000 | 12000 | 0.355 |
| NU1006 | 30 | 55 | 13 | 13 | 12.8 | 9500 | 12000 | 0.12 |
| NU206E | 30 | 62 | 16 | 36 | 35.5 | 8500 | 11000 | 0.214 |
| NU2206E | 30 | 62 | 20 | 45.5 | 48 | 8500 | 11000 | 0.268 |
| NU306E | 30 | 72 | 19 | 49.2 | 48.2 | 8000 | 10000 | 0.377 |
| NU2306E | 30 | 72 | 27 | 70 | 75.5 | 8000 | 10000 | 0.538 |
| NU406 | 30 | 90 | 23 | 57.2 | 53 | 7000 | 9000 | 0.73 |
| NU1007 | 35 | 62 | 14 | 19.5 | 18.8 | 8500 | 11000 | 0.16 |
| NU207E | 35 | 72 | 17 | 46.5 | 48 | 7500 | 9500 | 0.311 |
| NU2207E | 35 | 72 | 23 | 57.5 | 63 | 7500 | 9500 | 0.414 |
| NU307E | 35 | 80 | 21 | 62 | 63.2 | 7000 | 9000 | 0.501 |
| NU2307E | 35 | 80 | 31 | 87.5 | 98.2 | 7000 | 9000 | 0.738 |
| NU407 | 35 | 100 | 25 | 70.8 | 68.2 | 6000 | 7500 | 0.94 |
| NU1008 | 40 | 68 | 15 | 21.2 | 22 | 7500 | 9500 | 0.22 |
| NU208E | 40 | 80 | 18 | 51.5 | 53 | 7000 | 9000 | 0.394 |
| NU2208E | 40 | 80 | 23 | 67.5 | 75.2 | 7000 | 9000 | 0.507 |
| NU308E | 40 | 90 | 23 | 76.8 | 77.8 | 6300 | 8000 | 0.68 |
| NU2308E | 40 | 90 | 33 | 105 | 118 | 6300 | 8000 | 0.974 |
| NU408 | 40 | 110 | 27 | 90.5 | 89.8 | 5600 | 7000 | 1.25 |
| NU1009 | 45 | 75 | 16 | 23.2 | 23.8 | 6500 | 8500 | 0.26 |
| NU209E | 45 | 85 | 19 | 58.5 | 63.8 | 6300 | 8000 | 0.45 |
| NU2209E | 45 | 85 | 23 | 71 | 82 | 6300 | 8000 | 0.55 |
| NU309E | 45 | 100 | 25 | 93 | 98 | 5600 | 7000 | 0.93 |
| NU2309E | 45 | 100 | 36 | 130 | 152 | 5600 | 7000 | 1.34 |
| NU400 | 45 | 120 | 29 | 102 | 100 | 5000 | 6300 | 1.8 |
| NU1571 | 50 | 80 | 16 | 25 | 27.5 | 6300 | 8000 | – |
| NU210E | 50 | 90 | 20 | 61.2 | 69.2 | 6000 | 7500 | 0.505 |
| NU2210E | 50 | 90 | 23 | 74.2 | 88.8 | 6000 | 7500 | 0.59 |
| NU310E | 50 | 110 | 27 | 105 | 112 | 5300 | 6700 | 1.2 |
| NU2310E | 50 | 110 | 40 | 155 | 185 | 5300 | 6700 | 1.79 |
| NU410 | 50 | 130 | 31 | 120 | 120 | 4800 | 6000 | 2.3 |
| NU1011 | 55 | 90 | 18 | 35.8 | 40 | 5600 | 7000 | 0.45 |
| NU211E | 55 | 100 | 21 | 80.2 | 95.5 | 5300 | 6700 | 0.68 |
| NU2211E | 55 | 100 | 25 | 94.8 | 118 | 5300 | 6700 | 0.81 |
| NU311E | 55 | 120 | 29 | 128 | 138 | 4800 | 6000 | 1.53 |
| NU2311E | 55 | 120 | 43 | 190 | 228 | 4800 | 6000 | 2.28 |
| NU411 | 55 | 140 | 33 | 128 | 132 | 4300 | 5300 | 2.8 |
| NU1012 | 60 | 95 | 18 | 38.5 | 45 | 5300 | 6700 | 0.48 |
| NU212E | 60 | 110 | 22 | 89.8 | 102 | 5000 | 6300 | 0.86 |
| NU2212E | 60 | 110 | 28 | 122 | 152 | 5000 | 6300 | 1.12 |
| NU312E | 60 | 130 | 31 | 142 | 155 | 4500 | 5600 | 1.87 |
| NU2312E | 60 | 130 | 46 | 212 | 260 | 4500 | 5600 | 2.81 |
| NU412 | 60 | 150 | 35 | 155 | 162 | 4000 | 5000 | 3.4 |
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.
/* 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(/(.*?):(.*)$/))&&1
| Rolling Body: | Roller Bearings |
|---|---|
| The Number of Rows: | Single |
| Outer Dimension: | Small (28-55mm) |
| Samples: |
US$ 1/Set
1 Set(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
|---|
| Payment Method: |
|
|---|---|
|
Initial Payment Full Payment |
| Currency: | US$ |
|---|
| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
|---|
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.
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.
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.
editor by CX 2024-04-15
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 Double row crossed cylindrical roller slewing bearings Double row ball slewing bearings 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 |
| Customization: |
Available
| Customized Request |
|---|
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.
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.
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.
editor by CX 2024-04-13
China best Deep Groove Ball Bearing 6200 6201 6202 6203 6204 6205 bearing and race
Product Description
Detailed Photos
- Bushing—customized size acceptable
- Flange bearing—-many items acceptable
- Ball bearing—–high quality of P6, P5, noise level Z2 Z3 Z4,quickly delivery
HangZhou Xihu (West Lake) Dis.sheng bearing Co.,ltd was formally established in 2013, located in Xihu (West Lake) Dis. District, HangZhou City, specializing in the research, development and production of various micro bearings.
The company has modern production equipment and advanced bearing manufacturing technology, in quality with a scientific attitude to achieve excellence. The main products are refer to metric and English deep groove ball bearings, stainless steel bearings, flange series bearings, plane thrust ball bearings, precision thin-wall, low-noise bearings, non-standard bearings and pulley series with inner diameter of 1-15mm and outer diameter of less than 25mm. Our products have passed the EU environmental protection certification and have ROHS test reports. They are exported to HongKong, Europe, America, South Korea, Japan and other places. The products are widely used in household appliances, Instruments, micro motors, medical devices, textile machinery, electric tools, high-end toys, fishing gear, model aircraft and so on. With the rapid development of market economy, more and more developed of internet, the product price is gradually transparent, the market competition is more and more big, our factory has focus on product quality, with high quality to win a place in the market. And our factory production Supervisor has engaged in the bearing industry for more than 15 years,he has skilled technology in bearing production process, and knows for product quality: “there is no best, but better”. Our factory always organize technical backbone to other units to visit and learn, hope to give customers a more satisfactory answer.
Our company focus on high quality and best service to our clients, high quality products will give our clients more help on business. Welcome friends from all over the world visit and contact with us for cooperation and developing together.
We have excellent equipment, advanced technology, high-precision tester, which greatly improve the processing accuracy, effectively ensure the quality of products, but also shorten the production cycle of products, and through technological innovation, constantly improve product quality, win the trust of customers.
Xihu (West Lake) Dis.sheng bearing is widely used in automobile, motorcycle, water pump, electric tool, air compressor, reducer, industrial motor, generator, textile machinery, agricultural machinery, transmission equipment, machine tool and so on.
Xihu (West Lake) Dis.sheng bearing is also widely used in home appliances and office equipment, such as air conditioner, washing machine, vacuum cleaner, massager, sewing machine, range hood, microwave oven, copier and so on.
Company Profile
/* 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: | 0 |
|---|---|
| Aligning: | 0 |
| Separated: | Unseparated |
| Samples: |
US$ 1/Piece
1 Piece(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}
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Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
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| Payment Method: |
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Initial Payment Full Payment |
| Currency: | US$ |
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| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
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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.
What Role do Seals and Shields Play in Protecting Ball Bearings from Dirt and Debris?
Seals and shields are critical components of ball bearings that play a crucial role in protecting them from dirt, debris, moisture, and contaminants in various applications. These protective features help maintain the integrity of the bearing’s internal components and ensure reliable operation. Here’s how seals and shields contribute to bearing protection:
- Contaminant Exclusion:
Seals and shields create a physical barrier between the external environment and the bearing’s interior. They prevent dust, dirt, water, and other contaminants from entering the bearing and coming into contact with the rolling elements and raceways.
- Lubrication Retention:
Seals and shields help retain lubrication within the bearing. They prevent the lubricant from escaping and contaminants from entering, ensuring that the bearing remains properly lubricated for smooth operation and reduced friction.
- Corrosion Prevention:
Seals and shields protect bearing components from exposure to moisture and corrosive substances. By preventing moisture ingress, they help extend the bearing’s lifespan by minimizing the risk of corrosion-related damage.
- Extended Bearing Life:
Seals and shields contribute to the overall longevity of the bearing by reducing wear and damage caused by contaminants. They help maintain a clean internal environment, which promotes proper rolling contact and minimizes the risk of premature failure.
- Enhanced Performance in Harsh Environments:
In applications exposed to harsh conditions, such as outdoor machinery or industrial settings, seals and shields are vital. They protect bearings from abrasive particles, chemicals, and extreme temperatures, ensuring reliable performance despite challenging conditions.
- Noise and Vibration Reduction:
Seals and shields can help reduce noise and vibration generated by the bearing. They provide additional damping and stability, contributing to smoother operation and enhanced user comfort in noise-sensitive applications.
- Customized Protection:
Manufacturers offer a variety of seal and shield designs to suit different application requirements. Some seals provide higher levels of protection against contamination, while others are designed for high-speed or high-temperature environments.
- Trade-Offs:
While seals and shields offer significant benefits, they can also introduce some friction due to contact with the bearing’s inner or outer ring. Engineers must balance the level of protection with the desired operating characteristics, considering factors like friction, speed, and environmental conditions.
Overall, seals and shields play a vital role in maintaining the integrity and performance of ball bearings. By effectively preventing contaminants from entering and preserving lubrication, they ensure the smooth and reliable operation of machinery and equipment in a wide range of applications.
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.
editor by CX 2024-04-13
China Hot selling 51130 Low Noise Thrust Ball Bearing for Heavy Lifting Hook Bearing bearing driver
Product Description
PRODUCT DESCRIPTION
Thrust ball bearings are produced as single
direction or double direction thrust ball
bearings. They are designed to
accommodate axial loads only and must
not be subjected to any radial load.
Thrust ball bearings are separable, the
shaft washer, housing washer(s), ball and
cage assembly(s) can be mounted
separately. Shaft washers have a ground
bore to enable an interference fit. The bore
of the housing washer is turned and always
larger than the shaft washer bore.
PRODUCT DETAILS
Single direction thrust ball bearings:
consist of 2 washers with raceways and
balls guided b a cage. Washers have flat
seating surfaces, and that is why they must
be supported so that all balls can be evenly
loaded. Bearings carry the axial load only
in 1 direction. They are not CZPT to carry
radial forces.
Double direction thrust ball bearings:
have 2 cages with balls between the
central shaft washer and 2 houding
washers with flat seating surfaces. The
shaft washer has raceways on both sides
and is fixed on the journal. Bearings are
CZPT to carry only axial forces in both
directions.
PRODUCT PARAMETERS
| Bearing | ID | OD | B | Cr | Cor | Max speed | Max Speed | Mass |
| NO. | (Grease) | (Oil) | ||||||
| (mm) | (mm) | (mm) | (kN) | (kN) | (r/min) | (r/min) | (kg) | |
| 51100 | 10 | 24 | 9 | 10 | 14 | 6500 | 10000 | 0.02 |
| 51101 | 12 | 26 | 9 | 10.3 | 15.4 | 6500 | 10000 | 0.571 |
| 51102 | 15 | 28 | 9 | 10.5 | 16.8 | 6100 | 9400 | 0.571 |
| 51103 | 17 | 30 | 9 | 10.8 | 18.2 | 6100 | 9400 | 0.571 |
| 51104 | 20 | 35 | 10 | 14.2 | 24.7 | 5100 | 7900 | 0.04 |
| 51105 | 25 | 42 | 11 | 19.5 | 37.2 | 4400 | 6800 | 0.059 |
| 51106 | 30 | 47 | 11 | 20.4 | 42.2 | 4300 | 6600 | 0.068 |
| 51107 | 35 | 52 | 12 | 20.4 | 44.7 | 3900 | 6000 | 0.09 |
| 51108 | 40 | 60 | 13 | 26.9 | 62.8 | 3400 | 5300 | 0.12 |
| 51109 | 45 | 65 | 14 | 27.8 | 69.1 | 3200 | 5000 | 0.15 |
| 51110 | 50 | 70 | 14 | 28.8 | 75.4 | 3100 | 4800 | 0.16 |
| 51111 | 55 | 78 | 16 | 32.4 | 95.6 | 2800 | 4400 | 0.24 |
| 51112 | 60 | 85 | 17 | 41.4 | 113 | 2600 | 4000 | 0.29 |
| 51113 | 65 | 90 | 17 | 41.7 | 117 | 2400 | 3700 | 0.34 |
| 51114 | 70 | 95 | 18 | 43 | 127 | 2300 | 3600 | 0.36 |
| 51115 | 75 | 100 | 19 | 42.3 | 127 | 2200 | 3400 | 0.42 |
| 51116 | 80 | 105 | 19 | 44.6 | 141 | 2100 | 3300 | 0.43 |
| 51117 | 85 | 110 | 19 | 45.9 | 150 | 2100 | 3200 | 0.46 |
| 51118 | 90 | 120 | 22 | 59.7 | 190 | 1900 | 2900 | 0.68 |
| 51120 | 100 | 130 | 25 | 85 | 268 | 1600 | 2500 | 0.99 |
| 51122 | 110 | 145 | 25 | 87.1 | 288 | 1600 | 2400 | 1.08 |
| 51124 | 120 | 155 | 25 | 89 | 308 | 1500 | 2300 | 1.16 |
| 51126 | 130 | 170 | 30 | 104 | 352 | 1300 | 2000 | 1.87 |
| 51128 | 140 | 180 | 31 | 107 | 377 | 1200 | 1900 | 2.2 |
| 51130 | 150 | 190 | 31 | 109 | 402 | 1200 | 1900 | 2.15 |
| 51132 | 160 | 200 | 31 | 112 | 427 | 1200 | 1800 | 2.28 |
| 51134 | 170 | 215 | 34 | 134 | 512 | 1100 | 1700 | 3.25 |
| 51136 | 180 | 225 | 34 | 135 | 528 | 1000 | 1600 | 3.39 |
| 51138 | 190 | 240 | 37 | 170 | 657 | 970 | 1500 | 3.95 |
| 51140 | 200 | 250 | 37 | 172 | 677 | 940 | 1450 | 4.13 |
| 51144 | 220 | 270 | 37 | 177 | 739 | 880 | 1350 | 4.5 |
| 51148 | 240 | 300 | 45 | 241 | 1571 | 750 | 1150 | 7.38 |
| 51152 | 260 | 320 | 45 | 231 | 990 | 710 | 1100 | 7.93 |
| 51156 | 280 | 350 | 53 | 329 | 1430 | 640 | 900 | 12 |
| 51160 | 300 | 380 | 62 | 363 | 1610 | 540 | 810 | 17.5 |
| 51164 | 320 | 400 | 63 | 379 | 1760 | 540 | 810 | 19 |
| 51168 | 340 | 420 | 64 | 387 | 1860 | 500 | 770 | 20.5 |
| 51172 | 360 | 440 | 66 | 394 | 1960 | 500 | 720 | 21.5 |
| 51176 | 380 | 460 | 65 | – | – | – | – | |
| 51188 | 440 | 540 | 80 | – | – | – | – | |
| 51200 | 10 | 26 | 11 | 12.7 | 17.1 | 5700 | 8800 | 0.03 |
| 51201 | 12 | 28 | 11 | 13.2 | 19 | 5400 | 8300 | 0.034 |
| 51202 | 15 | 32 | 12 | 16.6 | 24.8 | 4900 | 7500 | 0.046 |
| 51203 | 17 | 35 | 12 | 17.2 | 27.3 | 4900 | 7500 | 0.053 |
| 51204 | 20 | 40 | 14 | 22.3 | 37.7 | 3900 | 6000 | 0.082 |
| 51205 | 25 | 47 | 15 | 27.8 | 50.4 | 3600 | 5500 | 0.12 |
| 51206 | 30 | 52 | 16 | 29.3 | 58.2 | 3400 | 5200 | 0.15 |
| 51207 | 35 | 62 | 18 | 39.2 | 78.2 | 2900 | 4500 | 0.22 |
| 51208 | 40 | 68 | 19 | 46.9 | 98.3 | 2700 | 4200 | 0.27 |
| 51209 | 45 | 73 | 20 | 47.7 | 105 | 2600 | 4000 | 0.32 |
| 51210 | 50 | 78 | 22 | 48.5 | 111 | 2300 | 3600 | 0.39 |
| 51211 | 55 | 90 | 25 | 69.4 | 159 | 2100 | 3200 | 0.61 |
| 51212 | 60 | 95 | 26 | 73.6 | 179 | 1900 | 3000 | 0.69 |
| 51213 | 65 | 100 | 27 | 74.8 | 189 | 1900 | 2900 | 0.77 |
| 51214 | 70 | 105 | 27 | 73.6 | 189 | 1800 | 2800 | 0.81 |
| 51215 | 75 | 110 | 27 | 77.4 | 209 | 1800 | 2700 | 0.86 |
| 51216 | 80 | 115 | 28 | 78.5 | 218 | 1700 | 2600 | 0.95 |
| 51217 | 85 | 125 | 31 | 92.3 | 251 | 1500 | 2300 | 1.29 |
| 51218 | 90 | 135 | 35 | 117 | 326 | 1400 | 2100 | 1.77 |
| 51219 | 95 | 140 | 40 | 135 | 375 | 1300 | 2000 | 2.2 |
| 51220 | 100 | 150 | 38 | 147 | 410 | 1200 | 1900 | 2.36 |
| 51222 | 110 | 160 | 38 | 148 | 431 | 1200 | 1800 | 2.57 |
| 51224 | 120 | 170 | 39 | 154 | 472 | 1100 | 1700 | 2.86 |
| 51226 | 130 | 190 | 45 | 203 | 622 | 970 | 1500 | 4.09 |
| 51228 | 140 | 200 | 46 | 215 | 669 | 940 | 1450 | 4.46 |
| 51230 | 150 | 215 | 50 | 244 | 768 | 840 | 1300 | 5.64 |
| 51232 | 160 | 225 | 51 | 247 | 803 | 810 | 1250 | 6.53 |
| 51234 | 170 | 240 | 55 | 269 | 874 | 750 | 1150 | 8.12 |
| 51236 | 180 | 250 | 56 | 294 | 986 | 710 | 1100 | 8.68 |
| 51238 | 190 | 270 | 62 | 298 | 1571 | 650 | 1000 | 11.7 |
| 51240 | 200 | 280 | 62 | 314 | 1110 | 620 | 950 | 12.2 |
| 51244 | 220 | 300 | 63 | 342 | 1310 | 580 | 900 | 13.5 |
| 51248 | 240 | 340 | 78 | 442 | 1800 | 520 | 800 | 23.1 |
| 51304 | 20 | 47 | 18 | – | – | – | – | 0.13 |
| 51305 | 25 | 52 | 18 | 35.7 | 61.4 | 3100 | 4800 | 0.18 |
| 51306 | 30 | 60 | 21 | 42.8 | 78.7 | 2700 | 4200 | 0.27 |
| 51307 | 35 | 68 | 24 | 55.5 | 105 | 2400 | 3700 | 0.39 |
| 51308 | 40 | 78 | 26 | 69.3 | 135 | 2100 | 3300 | 0.55 |
| 51309 | 45 | 85 | 28 | 80 | 163 | 1900 | 3000 | 0.69 |
| 51310 | 55 | 95 | 31 | 91.6 | 186 | 1800 | 2700 | 1 |
| 51311 | 55 | 105 | 35 | 119 | 246 | 1600 | 2400 | 1.34 |
| 51312 | 60 | 110 | 35 | 124 | 267 | 1500 | 2300 | 1.43 |
| 51313 | 65 | 115 | 36 | 128 | 287 | 1400 | 2200 | 1.57 |
| 51314 | 70 | 125 | 40 | 148 | 339 | 1300 | 2000 | 2.06 |
| 51315 | 75 | 135 | 44 | 171 | 396 | 1200 | 1900 | 2.68 |
| 51316 | 80 | 140 | 44 | 176 | 424 | 1200 | 1800 | 2.82 |
| 51317 | 85 | 150 | 49 | 206 | 489 | 1100 | 1700 | 3.66 |
| 51318 | 90 | 155 | 50 | 213 | 524 | 1000 | 1600 | 3.88 |
| 51319 | 95 | 160 | 52 | 225 | 563 | 960 | 1500 | 4.5 |
| 51320 | 100 | 170 | 55 | 236 | 596 | 940 | 1450 | 5.11 |
| 51322 | 110 | 190 | 63 | 280 | 754 | 810 | 1250 | 7.72 |
| 51324 | 120 | 210 | 70 | 325 | 931 | 710 | 1100 | 10.6 |
| 51326 | 130 | 225 | 75 | 346 | 1030 | 650 | 1000 | 13 |
| 51328 | 140 | 240 | 180 | 367 | 1130 | 620 | 950 | 15.5 |
| 51330 | 150 | 250 | 80 | 377 | 1200 | 580 | 900 | 16.3 |
| 51332 | 160 | 270 | 87 | 470 | 1570 | 550 | 850 | 21 |
| 51334 | 170 | 280 | 87 | 463 | 1570 | 520 | 800 | 22 |
| 51336 | 180 | 300 | 95 | 463 | 1580 | 490 | 750 | 28.1 |
| 51338 | 190 | 320 | 105 | 543 | 1950 | 440 | 680 | 36 |
| 51340 | 200 | 340 | 110 | 596 | 2220 | 420 | 650 | 42.9 |
| 51405 | 25 | 60 | 24 | 55.6 | 89.4 | 2600 | 4000 | 0.34 |
| 51406 | 30 | 70 | 28 | 72.8 | 126 | 2200 | 3400 | 0.53 |
| 51407 | 35 | 80 | 32 | 87.1 | 155 | 1900 | 2900 | 0.79 |
| 51408 | 40 | 90 | 36 | 113 | 205 | 1700 | 2600 | 1.14 |
| 51409 | 45 | 100 | 39 | 130 | 242 | 1500 | 2300 | 1.47 |
| 51410 | 50 | 110 | 43 | 148 | 283 | 1400 | 2100 | 1.99 |
| 51411 | 55 | 120 | 48 | 178 | 359 | 1200 | 1900 | 2.64 |
| 51412 | 60 | 130 | 51 | 201 | 397 | 1100 | 1700 | 3.51 |
| 51413 | 56 | 140 | 56 | 232 | 493 | 1000 | 1600 | 4.47 |
| 51414 | 70 | 150 | 60 | 250 | 553 | 940 | 1450 | 5.48 |
| 51415 | 75 | 160 | 65 | 252 | 560 | 880 | 1350 | 6.75 |
| 51416 | 80 | 170 | 68 | 270 | 621 | 810 | 1250 | 7.97 |
| 51417 | 85 | 180 | 72 | 307 | 753 | 780 | 1200 | 9.29 |
| 51418 | 90 | 190 | 77 | 327 | 826 | 710 | 1100 | 11 |
| 51419 | 94 | 200 | 80 | – | – | – | – | 11.8 |
| 51420 | 100 | 210 | 85 | 368 | 983 | 620 | 950 | 14.6 |
| 51422 | 120 | 250 | 90 | 379 | 1070 | 550 | 850 | 19.8 |
| 51426 | 130 | 270 | 110 | 498 | 1540 | 490 | 750 | 31.4 |
| 51428 | 140 | 280 | 112 | 520 | 1680 | 450 | 700 | 33.9 |
| 51430 | 150 | 300 | 120 | 568 | 1910 | 420 | 650 | 41.6 |
| 52202 | 15 | 32 | 22 | 16.5 | 24.8 | 4800 | 6700 | 0.082 |
| 52203 | 17 | 35 | 13.2 | – | – | – | – | 0.0506 |
| 52204 | 20 | 40 | 26 | 22.3 | 37.7 | 3900 | 6000 | 0.144 |
| 52205 | 25 | 47 | 28 | 27.7 | 50.4 | 3600 | 5500 | 0.23 |
| 52206 | 30 | 52 | 29 | 28.1 | 54.3 | 3400 | 5200 | 0.27 |
| 52207 | 35 | 62 | 34 | 40.7 | 83.8 | 2900 | 4500 | 0.42 |
| 52208 | 40 | 68 | 36 | 46.9 | 98.3 | 2700 | 4200 | 0.54 |
| 52209 | 45 | 73 | 37 | 47.7 | 105 | 2600 | 4000 | 0.64 |
| 52210 | 50 | 78 | 39 | 48.5 | 111 | 2300 | 3600 | 0.71 |
| 52211 | 55 | 90 | 45 | 69.4 | 159 | 2100 | 3200 | 1.12 |
| 52212 | 60 | 95 | 46 | 73.6 | 179 | 1900 | 3000 | 1.15 |
| 52213 | 65 | 100 | 47 | 74.8 | 189 | 1900 | 2900 | 1.36 |
| 52214 | 70 | 105 | 47 | 73.6 | 189 | 1800 | 2800 | 1.52 |
| 52215 | 75 | 110 | 47 | 77.4 | 209 | 1800 | 2700 | 1.6 |
| 52216 | 80 | 115 | 48 | 78.5 | 218 | 1700 | 2600 | 1.73 |
| 52217 | 85 | 125 | 55 | 92.3 | 251 | 1500 | 2300 | 2.22 |
| 52218 | 90 | 135 | 62 | 117 | 326 | 1400 | 2100 | 3.14 |
| 52220 | 100 | 150 | 67 | 147 | 410 | 1200 | 1900 | 4.2 |
| 52222 | 110 | 160 | 67 | 148 | 431 | 1200 | 1800 | – |
| 52226 | 130 | 190 | 80 | 203 | 622 | 970 | 1500 | – |
| 52230 | 150 | 215 | 89 | 244 | 768 | 840 | 1300 | – |
| 52234 | 170 | 240 | 97 | 269 | 874 | 750 | 1150 | – |
| 52240 | 200 | 280 | 109 | 314 | 1110 | 620 | 950 | – |
| 52244 | 220 | 300 | 110 | 342 | 1310 | 580 | 900 | – |
| 52305 | 25 | 52 | 34 | 35.7 | 61.4 | 3100 | 4800 | 0.321 |
| 52306 | 30 | 60 | 38 | 42.8 | 78.7 | 2700 | 4200 | 0.494 |
| 52307 | 35 | 68 | 44 | 55.5 | 105 | 2400 | 3700 | 0.71 |
| 52308 | 40 | 78 | 49 | 69.3 | 135 | 2100 | 3300 | 1.06 |
| 52309 | 45 | 85 | 32 | 80 | 163 | 1900 | 3000 | 1.26 |
| 52310 | 50 | 95 | 58 | 91.6 | 186 | 1800 | 2700 | 1.68 |
| 52311 | 55 | 105 | 64 | 119 | 246 | 1600 | 2400 | 2.5 |
| 52312 | 60 | 110 | 64 | 124 | 267 | 1500 | 2300 | 2.7 |
| 52313 | 65 | 115 | 65 | 128 | 287 | 1400 | 2200 | 2.9 |
| 52314 | 70 | 125 | 72 | 148 | 339 | 1300 | 2000 | 3.9 |
| 52315 | 75 | 135 | 79 | 171 | 396 | 1200 | 1900 | 5 |
| 52316 | 80 | 140 | 79 | 176 | 424 | 1200 | 1800 | 6.2 |
| 52317 | 85 | 150 | 87 | 206 | 489 | 1100 | 1700 | – |
| 52318 | 90 | 155 | 88 | 213 | 524 | 1000 | 1600 | – |
| 52320 | 100 | 170 | 97 | 236 | 596 | 940 | 1450 | 9.112 |
| 52322 | 110 | 190 | 110 | 280 | 754 | 810 | 1250 | 12.5 |
| 52324 | 120 | 210 | 123 | 325 | 931 | 710 | 1100 | 20.3 |
| 52326 | 130 | 225 | 130 | 346 | 1030 | 650 | 1000 | – |
| 52328 | 140 | 240 | 140 | 367 | 1130 | 620 | 950 | – |
| 52332 | 160 | 270 | 153 | 470 | 1570 | 550 | 850 | – |
| 52334 | 170 | 280 | 153 | 463 | 1570 | 520 | 800 | – |
| 52336 | 180 | 300 | 165 | 463 | 1580 | 490 | 750 | – |
| 52338 | 190 | 320 | 183 | – | – | – | – | – |
| 52340 | 200 | 340 | 192 | 596 | 2220 | 420 | 650 | – |
| 52405 | 25 | 60 | 45 | 55.6 | 89.4 | 2600 | 4000 | – |
| 52406 | 30 | 70 | 52 | 72.8 | 126 | 2200 | 3400 | – |
| 52407 | 35 | 80 | 59 | 87.1 | 155 | 1900 | 2900 | – |
| 52408 | 40 | 90 | 65 | 113 | 205 | 1700 | 2600 | – |
| 52411 | 55 | 120 | 87 | 178 | 359 | 1200 | 1900 | – |
| 52412 | 60 | 130 | 93 | 201 | 397 | 1100 | 1700 | – |
| 52413 | 65 | 140 | 101 | 232 | 493 | 1000 | 1600 | – |
| 52415 | 75 | 160 | 115 | 252 | 560 | 880 | 1350 | – |
| 52416 | 80 | 170 | 120 | 270 | 621 | 810 | 1250 | – |
| 52418 | 90 | 190 | 135 | 327 | 826 | 710 | 1100 | 9.76 |
| 52422 | 110 | 230 | 166 | 379 | 1070 | 550 | 850 | – |
| 52424 | 120 | 250 | 177 | 480 | 1460 | 520 | 800 | – |
| 52426 | 130 | 270 | 192 | 498 | 1540 | 490 | 750 | – |
Application of thrust ball bearing:
1.Thrust Ball Bearings should use close to the radial bearing,
in order to prevent the effect of shafts deflection.
2.When using big size ball bearings on a horizontal shaft, preload should be implemented to
prevent the clearance between housing washer and balls.
3.Under the inevitable circumstances of shaft deflection and misalignment,
aligning seat washer should be applied.
COMPANY PROFILE
ZheJiang Dente International Trade Co.,Ltd is a comprehensive enterprise with factory and trading company. we are focusing on import and export business based on our own bearing factory which is located in HangZhou City where is the largest bearing wholesale base in China.
Our company is specialized in developing various bearings which include deep groove ball bearings, tapered roller bearings, outer spherical bearings, self-aligning ball bearings, spherical roller bearings, cylindrical roller bearings, thrust ball bearings, non-standard bearings of automobiles. Simultaneously we also supply needle roller bearings, stainless steel bearings ,inch series bearings, non-standard bearings, the series of special bearings, imported bearings of global famous brand.
Our company mission is to supply high-quality bearings with competitive price for customers. And our company philosophy is based on excellent service, quick feedback, working sincerely, and team work. We hope to create a beautiful future together with customers.
TESTING EQUIPMNET
Package
A.tube package + outer carton + pallets
B.single box + outer carton + pallets
C.tube package + middle box + outer carton + pallets
D.According to your request.
FAQ
1. How long is your delivery term?
Our standard product delivery term is normally 30 days. A new product development cycle is 60 days in normal. Under normal circumstances, there are standing stock for regular types. You can email us to learn more details.
2. Where is your port of shipment located?
Our main port of shipment is HangZhou port, and we may operate at other ports if required by the customer.
3. I couldn’t find a design to fit my application in your catalog. Can you help me design a bearing?
Yes, technical expertise is available to assist you with engineering design for custom products. Available options include, but are not limited to, custom rings, retainers, balls, shields, lubricants, and packaging. We look forward to working with you to satisfy your rotary motion requirements.
4. Is optional lubrication provided?
We can offer a wide range of oils and greases for a variety of applications. Please contact our engineer for technical assistance with any special requirements.
5. What is the difference between using a shield or a seal as a ball bearing closure?
Shields or seals are often installed to retain lubricant and to prevent contamination from entering the bearing. While a shield contacts the outer ring and does not come in contact with the inner ring, the seal generally comes in contact with both the inner and outer rings. Torque or drag is lower with a shield than with a seal. Alternately, the seal provides a higher degree of protection from contamination. Shields and seals are available in a variety of materials and configurations. /* 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(/(.*?):(.*)$/))&&1
| Contact Angle: | 0 |
|---|---|
| Aligning: | Non-Aligning Bearing |
| Separated: | Separated |
| Samples: |
US$ 0.5/Piece
1 Piece(Min.Order) | Order Sample |
|---|
| Customization: |
Available
| Customized Request |
|---|
.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}
|
Shipping Cost:
Estimated freight per unit. |
about shipping cost and estimated delivery time. |
|---|
| Payment Method: |
|
|---|---|
|
Initial Payment Full Payment |
| Currency: | US$ |
|---|
| Return&refunds: | You can apply for a refund up to 30 days after receipt of the products. |
|---|
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.
What Role do Seals and Shields Play in Protecting Ball Bearings from Dirt and Debris?
Seals and shields are critical components of ball bearings that play a crucial role in protecting them from dirt, debris, moisture, and contaminants in various applications. These protective features help maintain the integrity of the bearing’s internal components and ensure reliable operation. Here’s how seals and shields contribute to bearing protection:
- Contaminant Exclusion:
Seals and shields create a physical barrier between the external environment and the bearing’s interior. They prevent dust, dirt, water, and other contaminants from entering the bearing and coming into contact with the rolling elements and raceways.
- Lubrication Retention:
Seals and shields help retain lubrication within the bearing. They prevent the lubricant from escaping and contaminants from entering, ensuring that the bearing remains properly lubricated for smooth operation and reduced friction.
- Corrosion Prevention:
Seals and shields protect bearing components from exposure to moisture and corrosive substances. By preventing moisture ingress, they help extend the bearing’s lifespan by minimizing the risk of corrosion-related damage.
- Extended Bearing Life:
Seals and shields contribute to the overall longevity of the bearing by reducing wear and damage caused by contaminants. They help maintain a clean internal environment, which promotes proper rolling contact and minimizes the risk of premature failure.
- Enhanced Performance in Harsh Environments:
In applications exposed to harsh conditions, such as outdoor machinery or industrial settings, seals and shields are vital. They protect bearings from abrasive particles, chemicals, and extreme temperatures, ensuring reliable performance despite challenging conditions.
- Noise and Vibration Reduction:
Seals and shields can help reduce noise and vibration generated by the bearing. They provide additional damping and stability, contributing to smoother operation and enhanced user comfort in noise-sensitive applications.
- Customized Protection:
Manufacturers offer a variety of seal and shield designs to suit different application requirements. Some seals provide higher levels of protection against contamination, while others are designed for high-speed or high-temperature environments.
- Trade-Offs:
While seals and shields offer significant benefits, they can also introduce some friction due to contact with the bearing’s inner or outer ring. Engineers must balance the level of protection with the desired operating characteristics, considering factors like friction, speed, and environmental conditions.
Overall, seals and shields play a vital role in maintaining the integrity and performance of ball bearings. By effectively preventing contaminants from entering and preserving lubrication, they ensure the smooth and reliable operation of machinery and equipment in a wide range of applications.
What Factors should be Considered when Selecting a Ball Bearing for a Particular Application?
Selecting the right ball bearing for a specific application involves careful consideration of various factors to ensure optimal performance, longevity, and reliability. Here are the key factors that should be taken into account:
- Load Type and Magnitude:
Determine the type of load (radial, axial, or combined) and the magnitude of the load that the bearing will need to support. Choose a bearing with the appropriate load-carrying capacity to ensure reliable operation.
- Speed and Operating Conditions:
Consider the rotational speed of the application and the operating conditions, such as temperature, humidity, and exposure to contaminants. Different bearing types and materials are suited for varying speeds and environments.
- Accuracy and Precision:
For applications requiring high accuracy and precision, such as machine tool spindles or optical instruments, choose high-precision bearings that can maintain tight tolerances and minimize runout.
- Space Limitations:
If the application has limited space, choose miniature or compact ball bearings that can fit within the available dimensions without compromising performance.
- Thrust and Radial Loads:
Determine whether the application requires predominantly thrust or radial load support. Choose the appropriate type of ball bearing (thrust, radial, or angular contact) based on the primary load direction.
- Alignment and Misalignment:
If the application experiences misalignment between the shaft and housing, consider self-aligning ball bearings that can accommodate angular misalignment.
- Mounting and Installation:
Consider the ease of mounting and dismounting the bearing. Some applications may benefit from features like flanges or snap rings for secure installation.
- Lubrication and Maintenance:
Choose a bearing with appropriate lubrication options based on the application’s speed and temperature range. Consider whether seals or shields are necessary to protect the bearing from contaminants.
- Environmental Conditions:
Factor in the operating environment, including exposure to corrosive substances, chemicals, water, or dust. Choose materials and coatings that can withstand the specific environmental challenges.
- Bearing Material:
Select a bearing material that suits the application’s requirements. Common materials include stainless steel for corrosion resistance and high-carbon chrome steel for general applications.
- Bearing Arrangement:
Consider whether a single-row, double-row, or multiple bearings in a specific arrangement are needed to accommodate the loads and moments present in the application.
By carefully evaluating these factors, engineers and designers can choose the most suitable ball bearing that aligns with the specific demands of the application, ensuring optimal performance, durability, and overall operational efficiency.
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) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
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.
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.
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.
editor by CX 2024-04-12
China Hot selling Vu 20 0260 Ball Slewing Bearing Made in China bearing air
Product Description
VU 20 0260 Ball Slewing Bearing Made In China
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(/(.*?):(.*)$/))&&1
| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | High Speed, Cold-Resistant, Corrosion-Resistant, Heat-Resistant |
| Sealing Gland: | Sealed On Both Sides |
| Rolling-Element Number: | Single-Row |
| Material: | 50mn/42CrMo |
| Type: | No Gear |
| Samples: |
US$ 275/Set
1 Set(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
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.
What Precautions should be taken to Prevent Contamination of Ball Bearings in Industrial Settings?
Preventing contamination of ball bearings is essential to ensure their proper function, longevity, and overall performance in industrial settings. Contaminants such as dust, dirt, debris, and particles can significantly impact bearing operation. Here are important precautions to take to prevent contamination of ball bearings:
- Effective Sealing:
Choose ball bearings with appropriate seals or shields to prevent the ingress of contaminants. Seals provide a physical barrier against dust, moisture, and particles, ensuring the bearing’s interior remains clean.
- Clean Environment:
Maintain a clean working environment around the machinery and equipment. Regularly clean the surrounding areas to prevent the accumulation of dirt and debris that could enter the bearings.
- Proper Handling:
Handle bearings with clean hands and use gloves if necessary. Avoid touching the bearing surfaces with bare hands, as natural skin oils can transfer contaminants onto the bearing.
- Clean Tools and Equipment:
Use clean tools and equipment during installation and maintenance to prevent introducing contaminants. Ensure that tools are properly cleaned before coming into contact with the bearing components.
- Contamination-Controlled Workstations:
Establish contamination-controlled workstations for bearing handling, installation, and maintenance. These areas should have proper ventilation, filtered air, and minimal exposure to external contaminants.
- Proper Lubrication:
Use the correct lubricant in appropriate quantities. Lubricants help create a barrier against contaminants and reduce friction. Regularly inspect and replenish lubrication to maintain its effectiveness.
- Regular Inspections:
Implement a routine inspection schedule to monitor the condition of the bearings. Look for signs of contamination, wear, and damage. Address any issues promptly to prevent further damage.
- Training and Education:
Train personnel on proper handling, installation, and maintenance practices to minimize the risk of contamination. Educated employees are more likely to take precautions and prevent accidental contamination.
- Environmental Controls:
In sensitive environments, such as clean rooms or medical facilities, implement strict environmental controls to minimize the presence of contaminants that could affect bearing performance.
- Regular Cleaning and Maintenance:
Perform regular cleaning and maintenance of machinery and equipment to prevent the buildup of contaminants. Keep bearings protected during maintenance to prevent debris from entering during the process.
- Selection of Suitable Bearings:
Choose bearings that are specifically designed for the application’s environmental conditions. Some bearings have advanced sealing options or specialized coatings that enhance contamination resistance.
By implementing these precautions, industries can significantly reduce the risk of contamination in ball bearings, ensuring smooth operation, extended bearing life, and enhanced equipment reliability.
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.
editor by CX 2024-04-12
China Standard Swing Gear Bearing Xsu 14 0844 Without Gear Roller Bearing for Wind Turbines with Good quality
Product Description
Swing Gear Bearing XSU 14 0844 Without Gear Roller Bearing For Wind Turbines
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.
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| Standard or Nonstandard: | Standard |
|---|---|
| Feature: | High Speed, Cold-Resistant, Corrosion-Resistant, Heat-Resistant |
| Sealing Gland: | Sealed On Both Sides |
| Rolling-Element Number: | Single-Row |
| Roller Type: | Straight Raceway |
| Material: | 50mn/42CrMo |
| Customization: |
Available
| Customized Request |
|---|
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.
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.
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.
editor by CX 2024-04-12