Product Description
Product description
Description:
-Rod end bearing, is used on the ends of control rods, steering links, tie rods, or anywhere a precision articulating joint is required.
-A ball swivel with an opening through which a bolt or other attaching hardware may pass is pressed into a circular casing with a threaded shaft attached.
-The housing is made of machined low carbon steel that is plated for corrosion resistance.
-Rod end bearings are used on the ends of cylinders or linkages to take up misalignment between 2 connected parts
YOUNGJIN INDUSTRY Co., Ltd, was founded 2571.
Has several years experience in producing bearings
We have always adhered to the business policy of “Quality for Survival, Product for Development, Credibility for Cooperation and Service for Customers”. We are pleased to find new partners and hope to establish longterm business relationships with you based on mutual benefits
Our products used to chemical treatment equipments, petrochemical equipment and press plates. It is also used in railway coaches, roof drainage products, storm door frames, food machinery and tableware
Now our company developed international markets more than 10 years, and established long partnership with Korea, Japan, South American, Australia, Saudi Arabia, Southeast Asia. etc. We will be on the basic of advanced management and service concept to provide high quality products and perfect service for all over the manufacturing enterprise. We welcome customers from all over the world to cooperate with us. /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Contact Angle: | 13 |
|---|---|
| Aligning: | Aligning Bearing |
| Separated: | Separated |
| Rows Number: | Double |
| Load Direction: | Radial Bearing |
| Material: | Bearing Steel |
| Samples: |
US$ 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.
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.
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 2024-02-19
China Professional Stable Performance Wheel Bearing R8 Miniature Ball Bearings bearing distributors
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 spare parts of the machines?
A3: Yes, of course.
Q4: What about the voltage of products? Can they be customized?
A4: Yes, of course. The voltage can be customized according to your equipment.
Q5: Which payment term can you accept?
A5: 30% T/T in advance, 70% T/T against the B/L copy.
Q6: Can you accept OEM orders?
A6: Yes, with professional design team, OEM orders are highly welcome.
Q7: Which trade term can you accept?
A7: Available trade terms: FOB, CIF, CFR, EXW, CPT, etc.
/* March 10, 2571 17:59:20 */!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 |
|---|
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.
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.
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 2024-02-18
China wholesaler DC4010 12V Ball Bearings Are Suitable of Small Household Appliances Cooling Fan ball bearing
Product Description
RFQ:
Q1. Are you a manufacturer or a trading company?
A: We are a manufacturer.
Q2. What kinds of products supplied by your factory?
A: We provide DC cooling fan, DC blower fan,AC cooling fan and EC cooling fan. We have full series dimension ranging from 20mm to 250mm, and the bearing type, current amp, rated voltage, speed, air flow can all be customized.
Q3. How do we carry out quality control?
A: There are more than 20 processes to making a fan, our production procedure follow ISO9001:2008, we need to control every process well.
1. Bearing: NMB from Japan which will ensure the working life.
2. IC\Mos and other electronic components, our suppliers include ROHM \IR \DALLAS \Feeling Technology, and other famous brands.
3. Life testing, all of our projects will testing more than 1 year in such a environment: temperature is 60°C, voltage is more than 20%(such as: 24V, the testing voltage is 28V), and the power restarts every 2 minutes.
4. We have experiences of making high quality fan for more than 10 years, all of our fans can work more than 50000H in normal condition with dual ball bearing. 30000H with sleeve bearing.
5.All of our fans will be 100% tested at least twice during production.
Q4. Lead Time
1. Samples:3-7 working days
2. Mass production: 7-15 working days
3. Waterproof fan need 3 more days
Q5. Payment
We accept payment by T/T ,VISA, MASTER CARD, PAYPAL, APPLE PAY, GOOGLE PAY
100% payment for sample orders
70% deposit and 30% balance before shipment
Q6. Guarantee
3 years warranty for ball bearing fans
2 years warranty for hydraulic bearing fans
1 year warranty for sleeve bearing fans
Q7. Service
OEM service based on MOQ1000pcs
100% test before shipping
UL material and waterproof material optional
The defective rate is less than 5%
Customized service can be provided /* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Material: | Plastic |
|---|---|
| Blade Material: | Plastic |
| Type: | DC Fan |
| Samples: |
US$ 0.8/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. |
|---|
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.
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 is a Ball Bearing and How does it Function in Various Applications?
A ball bearing is a type of rolling-element bearing that uses balls to reduce friction between moving parts and support radial and axial loads. It consists of an outer ring, an inner ring, a set of balls, and a cage that separates and maintains a consistent spacing between the balls. Here’s how ball bearings function in various applications:
- Reduction of Friction:
Ball bearings function by replacing sliding friction with rolling friction. The smooth, spherical balls minimize the contact area between the inner and outer rings, resulting in lower friction and reduced heat generation.
- Radial and Axial Load Support:
Ball bearings are designed to support both radial loads (forces perpendicular to the shaft’s axis) and axial loads (forces parallel to the shaft’s axis). The distribution of balls within the bearing ensures load-carrying capacity in multiple directions.
- Smooth Rotational Movement:
Ball bearings facilitate smooth and precise rotational movement. The rolling motion of the balls allows for controlled and continuous rotation with minimal resistance.
- Applications in Machinery:
Ball bearings are used in a wide range of machinery and equipment, including motors, generators, gearboxes, conveyors, and fans. They enable the efficient transfer of motion while reducing wear and energy losses.
- Automotive Industry:
Ball bearings are extensively used in automobiles for various applications, including wheel hubs, transmission systems, steering mechanisms, and engine components. They provide reliability and durability in challenging automotive environments.
- Industrial Machinery:
In industrial settings, ball bearings support rotating shafts and ensure the smooth operation of equipment such as pumps, compressors, and machine tools.
- High-Speed Applications:
Ball bearings are suitable for high-speed applications due to their low friction and ability to accommodate rapid rotation. They are used in applications like electric motors and aerospace components.
- Precision Instruments:
For precision instruments, such as watches, cameras, and medical devices, ball bearings provide accurate rotational movement and contribute to the overall performance of the instrument.
- Variety of Sizes and Types:
Ball bearings come in various sizes, configurations, and materials to suit different applications. Different types include deep groove ball bearings, angular contact ball bearings, thrust ball bearings, and more.
In summary, ball bearings are essential components in a wide range of applications where smooth rotation, load support, and reduced friction are critical. Their versatility, reliability, and efficiency make them indispensable in industries spanning from automotive to industrial machinery to precision instruments.
editor by CX 2024-02-16
China Best Sales High- Precision Stainless Steel Ball Bearings drive shaft bearing
Product Description
Company Profile
HangZhou CZPT Imp. & Exp. Co., Ltd. is a manufacturing and trade combo company with 20 years of experience in steel balls. Our steel ball plant was founded in 1998 and has already received an ISO9001:2015 certificate. We also can supply carbon steel balls, chrome steel balls, plastic balls, ceramic balls, and rollers according to our customer’s requirements. So far, we have exported to many countries such as the USA, UK, Italy, Germany, Russia, Brazil, France, Peru, South Africa, etc. If you have any needs, please feel free to contact us.
Product Description
Stainless steel balls
Applications:
For 300 series stanless steel balls, they are used in Trigger sprayers,Bearings,Dispenser valves,Body jewelry lotion pumps, and so on.
For 400 series stainless steel balls, they are most used in Bearing applications,Valve, Locking mechanisms,Fasteners,and so on.
Chermical Composition:
| AISI Number |
C% | Si% | Mn% | Cr% | Ni% | Mo% | P% | S% | property |
| AISI 304 | 0.07 MAX |
1.00 MAX |
2.00 MAX |
17.0~ 19.0 |
8.0~ 10.5 |
0.045 MAX |
0.03 MAX |
Slightly magnetic,flat surface HRC 25min. |
|
| AISI 316 | 0.07 MAX |
1.00 MAX |
2.00 MAX |
16.5~ 18.5 |
10.5~ 13.5 |
2.00~ 2.50 |
0.045 MAX |
0.03 MAX |
Better corrosion resistance than SS304 specially against Sulfuric acid and ink/bleach/nitric |
| AISI 420 | 0.07~ 0.25 |
1.00 MAX |
1.00 MAX |
12.0~ 14.0 |
0.045 MAX |
0.03 MAX |
Magnetic,martensite steel. flat surface HRC 50min, better corrosion resistant |
||
| AISI 430 | 0.08 MAX |
1.00 MAX |
1.00 MAX |
15.5~ 17.5 |
0.045 MAX |
0.03 MAX |
Ferritic stainless steel,better corrosion resistant than 3series at higher temperature | ||
| AISI 440 | 0.95~ 1.20 |
1.00 MAX |
1.00 MAX |
16.0~ 18.0 |
0.045 MAX |
0.02 MAX |
Martensite,fair corrosion to water,alcohol,oil and food product. |
Hardness: HRC25-39 ( without demagnetization treatment)
special hardness can be made according to the customer’s requirement.
Ball Surface:Bright, Zero Defect
Certification:ISO 9001:2015
Safe:RoHS SGS
Export Markets:Global
Package: Normal package or customize as per the customer’s requirement. Below is the nomal package ways.
Step 1: Weighing stainless steel balls. Usually the weight is about 10kg.
Step 2: Sealed plastic bags
Step 3: Put sealed plastic bags into small boxes.
Step 4: Each box has the label, including material, Lot No. size, quantity, grade, date……
Step 5: Each box directly put into plywood case.
Service
We would like to offer you services as:
– Instant improvement and design of products
– Quick response to the prices
– Complete inspection report
– Traceable
– Perfect logistic
We hope that our products can offer better quality support for you!
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Size: | AISI316 7.937mm |
|---|---|
| Samples: | Free |
| Quality: | ISO9001:2015 |
| Standard: | ISO3290 |
| Transport Package: | Plastic Bag – Box – Carton – Case |
| Specification: | 7.937mm |
| Samples: |
US$ 0/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.
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.
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 2024-02-14
China Standard High Quality Deep Groove Ball Bearings 6008z 20X42X8mm connecting rod bearing
Product Description
High Quality Deep Groove Ball bearings 6008Z 20x42x8mm
6008Z Deep groove ball bearings are versatile, self-retaining bearings with solid outer rings, inner rings and ball and cage assemblies.
Parameters of Deep groove ball bearings
| Product name: | 6008Z deep groove ball bearing 20*42*8mm |
| Model number: | 6008Z |
| Type: | Deep Groove Ball Bearing |
| Material : | Chrome steel/stainless steel/ceramic |
| Size(mm) : | customized |
NIDE can supply large diameter ball bearings.Our ball bearings are available to you off-the-shelf, in sizes ranging from 10 mm to 320 mm outside diameters. The ball bearings are servicing heavy equipment such as electric motors, gear reducers, large motors, extruders, pumps, as well as specialty applications in steel and aluminum processing, oil and gas drilling, and mining applications.
Deep groove ball bearingscan be designed to accommodate radial loads, axial loads and combined radial/axial loads in a wide range of operating speeds. These characteristics combined with relative cost and compactness of design result in their universal appeal in the industry.
Deep groove ball bearing feature:
1. High speed and low noise
2. Customized, OEM, ODM
3. Competitive price
4. Best service for you
Ball Bearing Description:
Deep groove ball bearing consists of an outer ring, an inner circle, a set of steel balls and a set of maintenance frames.They are sealed and open 2 kinds of structure, open without sealing structure refers to the bearing, seal type deep groove ball into dust seal and oil seal. The dust – proof sealing material is a sheet metal stamping, which simply prevents the dust from entering the bearing roller. The oil-proof type is the contact oil seal, which can effectively prevent the grease spillover inside the bearing.
Ball Bearing Picture:
Information needed for ball bearing inquiry
It will be better if customer could send us detailed drawing including below information.
1.Ball bearing model number
2. Ball bearing dimension
3. Ball bearing application
4. Required quantity
5. Other technical requirement.
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Material Type: | Steel Gcr 15 |
|---|---|
| Dimension: | Customized |
| Composition: | Two Rings, Rolling Elements and a Cage |
| Seal Type: | Rubber or Iron |
| Grease Type: | SRL or Customized |
| Certifiacate: | CCC |
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 Miniature Ball Bearings Differ from Standard-sized Ones, and Where are They Commonly Used?
Miniature ball bearings, as the name suggests, are smaller in size compared to standard-sized ball bearings. They have distinct characteristics and are designed to meet the unique requirements of applications that demand compactness, precision, and efficient rotation in confined spaces. Here’s how miniature ball bearings differ from standard-sized ones and where they are commonly used:
- Size:
The most noticeable difference is their size. Miniature ball bearings typically have outer diameters ranging from a few millimeters to around 30 millimeters, while standard-sized ball bearings have larger dimensions suitable for heavier loads and higher speeds.
- Load Capacity:
Due to their smaller size, miniature ball bearings have lower load-carrying capacities compared to standard-sized bearings. They are designed for light to moderate loads and are often used in applications where precision and compactness are prioritized over heavy load support.
- Precision:
Miniature ball bearings are known for their high precision and accuracy. They are manufactured to tighter tolerances, making them suitable for applications requiring precise motion control and low levels of vibration.
- Speed:
Miniature ball bearings can achieve higher speeds than standard-sized bearings due to their smaller size and lower mass. This makes them ideal for applications involving high-speed rotation.
- Friction and Efficiency:
Miniature ball bearings generally have lower friction due to their smaller contact area. This contributes to higher efficiency and reduced heat generation in applications that require smooth and efficient motion.
- Applications:
Miniature ball bearings find applications in various industries and sectors:
- Electronics and Consumer Devices:
They are used in small motors, computer disk drives, printers, and miniature fans, where space is limited but precise motion is essential.
- Medical and Dental Equipment:
Miniature bearings are used in medical devices such as surgical instruments, dental handpieces, and diagnostic equipment due to their precision and compactness.
- Robotics and Automation:
Miniature ball bearings are integral to robotic arms, miniature conveyors, and automation systems, enabling precise movement in confined spaces.
- Aerospace and Defense:
They are used in applications like UAVs (drones), aerospace actuators, and satellite components where size and weight constraints are critical.
- Optics and Instrumentation:
Miniature bearings play a role in optical instruments, cameras, and measuring devices, providing smooth rotation and accurate positioning.
Overall, miniature ball bearings are specialized components designed for applications where space, precision, and efficient rotation are paramount. Their compactness and high precision make them crucial in various industries requiring reliable motion control in limited spaces.
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 2024-02-12
China factory CZPT CZPT CZPT CZPT CZPT CZPT 6206 6207 6208 6209 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 Deep Groove Ball Bearing Branded Bearings bearing assembly
Product Description
CZPT CZPT CZPT CZPT CZPT CZPT Deep Groove Ball Bearing Branded Bearings
Simply Bearings supplies a wide range of bearings designed for particular applications. Ball bearings bearing ball bearings thrust bearing roller bearing needle bearing pillow block bearings linear bearings linear bearings are the simplest and most common type of bearing. These linear bearings, bearing types bearings can handle both thrust and radial loads but are limited as to the weight of the load itself. If overloaded,bearing taper roller bearing needle roller bearings they can deform.
Deep groove ball bearings can support moderate radial loads and moderate axial loads (parallel to the shaft). They can operate at high speeds. Ball bearings with shields or seals for protection are usually lubricated to last for the operating lifeMiniature & Instrument Series, Stainless Steel – Inch and MetricOpen, Shielded, Shielded and Modified Dimension Bearings: Inch MetricSingle Row Deep Groove6000, 6200 and 6300 Series: Open, Shielded, Sealed – Metric
Main purposes:
Automotive: rear wheel, transmission, electrical equipment components
Electric: General Motors, Household Appliances
Other: instruments, internal combustion engines, construction machinery, railway vehicles, handling machinery, agricultural machinery, all kinds of industrial machiner
| Product | Bearing Type | Bore Dia (d) (mm) | Outer Dia (D) (mm) | Width (B) (mm) | Radius (min) (rs) (mm) | Dynamic Load Rating (Cr) (N) | Static Load Rating (Cor) (N) |
| 6002 | Open | 15 | 32 | 9 | 0.3 | 5600 | 2850 |
| 6002-2RS | Sealed | 15 | 32 | 9 | 0.3 | 5600 | 2850 |
| 6002ZZ | Shielded | 15 | 32 | 9 | 0.3 | 8100 | 3450 |
| 6202 | Open | 15 | 35 | 11 | 0.6 | 7650 | 3750 |
| 6202-2RS | Sealed | 15 | 35 | 11 | 0.6 | 7650 | 3750 |
| 6202ZZ | Shielded | 15 | 35 | 11 | 0.6 | 7650 | 3750 |
| 6302 | Open | 15 | 42 | 13 | 1 | 11400 | 5450 |
| 6302-2RS | Sealed | 15 | 42 | 13 | 1 | 11400 | 5450 |
| 6302ZZ | Shielded | 15 | 42 | 13 | 1 | 11400 | 5450 |
| 6003 | Open | 17 | 35 | 10 | 0.3 | 6000 | 3250 |
| 6003-2RS | Sealed | 17 | 35 | 10 | 0.3 | 6000 | 3250 |
| 6003ZZ | Shielded | 17 | 35 | 10 | 0.3 | 6000 | 3250 |
| 6203 | Open | 17 | 40 | 12 | 0.6 | 9550 | 4800 |
| 6203-2RS | Sealed | 17 | 40 | 12 | 0.6 | 9550 | 4800 |
| 6203ZZ | Shielded | 17 | 40 | 12 | 0.6 | 9550 | 4800 |
| 6303 | Open | 17 | 47 | 14 | 1 | 13600 | 6650 |
| 6303-2RS | Sealed | 17 | 47 | 14 | 1 | 13600 | 6650 |
| 6303ZZ | Shielded | 17 | 47 | 14 | 1 | 13600 | 6650 |
Related Products
Company Introduction
Great Bearing Co., Ltd. is a professional manufacturer engaged in the research, development, production, sale and service of Cylindrical roller bearing, tapered roller bearing, deep groove ball bearing, Spherical roller bearing etc.
Our factory is located in HangZhou city of the biggest bearing market area in China. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always available to discuss your requirements and ensure full customer satisfaction. In recent years, our company has introduced a series of advanced equipment including double-end face grinding machine etc., flaw detector…In addition, we have obtained ISO9001: 2008 certificates. Selling well in all cities and provinces around China, our products are also exported to clients in such countries and regions as Europe, America, Middle East, Africa and Southeast Asian.
We also welcome OEM and ODM orders. Whether selecting a current product from our catalog or seeking engineering assistance for your application, you can talk to our customer service center about your sourcing requirements.
Certificates
Our advantages
FAQ:
Q: Are you trading company or manufacturer ?
A: We are factory and trading company. Our factory sell market is in china with our brand GREAT.
Q: How long is your delivery time?
A: We have enough stock for roller bearings and ball bearings. Delivery time within 7 days. 15-25 days for 1 container to OEM brand following your request
Q: Do you provide samples ? is it free or extra ?
A: Yes, we could offer the sample for free charge ,please you pay the cost of freight.
Q: What is your payment term?
A: We accept 30% TT advance ,70% balance against the bill lading copy. Also 100% IRR L/C ok.
Packaging & Shipping
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Separated: | Unseparated |
|---|---|
| Rows Number: | Single |
| Material: | Stainless Steel |
| Application: | Machinery |
| Feature: | Long Life |
| Service: | OEM ODM |
| Samples: |
US$ 0.5/Set
1 Set(Min.Order) | |
|---|
| 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.
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.
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 2024-02-04
China wholesaler Hqa Factory Thrust Ball Bearing 51109 51101 51102 51103 51104 51105 51106 51107 51108 51109 Bearings bearing driver
Product Description
The thrust ball bearing is designed to withstand thrust load at high speed and is composed of gasket – like ring with ball rolling raceway groove. Because of the cushion shape of the ring, the thrust ball bearing is divided into 2 types: flat base cushion type and aligning spherical cushion type. In addition, the bearing can bear axial loads, but not radial loads.
Types:
According to the force, one-way thrust ball bearings and two-way thrust ball bearings are divided. Unidirectional thrust ball bearing can withstand unidirectional axial load. Bidirectional thrust ball bearing can bear bidirectional axial load, wherein the shaft ring is matched with the shaft. The mounting surface of the seat ring is spherical bearing, with aligning performance, which can reduce the influence of installation error. Thrust ball bearing can not bear radial load, limit speed is low.
Features:
1, Low noise
2, Wear resistance
3, High precision
4, Long life
Product Description
|
item |
value |
|
Type |
BALL |
|
Structure |
Thrust |
|
Applicable Industries |
Manufacturing Plant, Machinery Repair Shops, Retail, Other |
|
Seals Type |
open |
|
Number of Row |
Single row |
|
Place of Origin |
China |
|
Product name |
Thrust Roller Bearing |
|
Material |
Chrome Steel GCr15 |
|
Application |
Automotive.tractor.construction Machinery.rolling Mill |
|
Package |
Plastic Bag+ Box+ Carton + Pallet |
|
Sample |
Avaliable |
|
Cage |
Steel Cage.brass Cage.nylon Cage |
|
Vibration |
Z1V1 Z2V2 Z3V3 Z4V4 |
|
Quality |
High-Quality |
|
OEM Service |
Packing |
|
Bearing material |
Chrome Steel/GCr15 |
Thrust ball bearing
Thrust ball bearings, composed of ball bearings supported in a ring, can be used in low thrust applications where there is little axial load.
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, i.e. 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.
Features of Thrust ball bearings
Available in 2 designs: single direction and double direction.
Designs are available with spherical aligning seats or aligning seat washers.
High quality steel-ultra clean steel to extend bearing life by up to 80%.
High Grade Balls – Quiet and smooth operation even at high speed.
Optional seating rings take initial misalignment.
Application of Thrust ball bearings
Thrust ball bearings applie to withstand the side of the axial load, lower speed parts , such as crane hooks , vertical pumps, vertical centrifuge , jack, speed reducer and so on . Shaft bearing ring , seat ring and rolling elements are separated , you can dismantle respectively .
Detailed Photos
Our Advantages
Product Application
Related Products
Company Profile
Packaging & Shipping
PACKING:
* 1. Plastic bag + craft paper + carton+ pallet, Plastic bag +white box+ carton+ pallet
* 2. Commercial Package: Plastic bag + color box + carton + pallet
* 3. Customized package:According to customers’requirements.
SHIPPING:
1.Small Order: We can send by DHL, FEDEX, TNT, UPS, EMS. Tracking NO. will be advised after delivery.
2.Big Order:We will arrange delivery by sea.
Noted: Generally, we will delivery the goods within 15 days, so balance payment should be paid before delivery. Meantime, we will take photos and send to you for confirmation when the goods ready.
FAQ
Q: Are you trading company or manufacturer ?
A: We are factory. We have our own brand:HQA .If you interested in our product,I can take you to visit our factory.
Q: How long is your delivery time?
A: Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock, it is according to quantity.
Q: Where is your factory located? How can I visit there?
A: Our factory is located in ZheJiang Province,You can take the high-speed rail or plane to visit.
Q: Do you provide samples ? it is free charge?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q:The MOQ is how much?
A: About ordinary standard type of bearing ,We have rich inventory,not have MOQ,if your need a
product is Non-standard size,need customize,we will according the product size to determine the MOQ.
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Rolling Body: | Ball Bearings |
|---|---|
| The Number of Rows: | Single |
| Outer Dimension: | Small and Medium-Sized (60-115mm) |
| Material: | Bearing Steel |
| Spherical: | Non-Aligning Bearings |
| Separated: | Separated |
| Samples: |
US$ 0.01/Set
1 Set(Min.Order) | |
|---|
What are the Materials Typically Used in Manufacturing Ball Bearings and Their Advantages?
Ball bearings are manufactured using a variety of materials, each chosen for its specific properties and advantages in various applications. Here are some commonly used materials in ball bearing manufacturing and their respective benefits:
- High-Carbon Chrome Steel (AISI 52100):
This is the most common material used for ball bearing manufacturing. It offers excellent hardness, wear resistance, and fatigue strength. High-carbon chrome steel bearings are suitable for a wide range of applications, from industrial machinery to automotive components.
- Stainless Steel (AISI 440C, AISI 304, AISI 316):
Stainless steel bearings are corrosion-resistant and suitable for applications where moisture, chemicals, or exposure to harsh environments are concerns. AISI 440C offers high hardness and corrosion resistance, while AISI 304 and AISI 316 provide good corrosion resistance and are often used in food and medical industries.
- Ceramic:
Ceramic bearings use silicon nitride (Si3N4) or zirconia (ZrO2) balls. Ceramic materials offer high stiffness, low density, and excellent resistance to corrosion and heat. Ceramic bearings are commonly used in high-speed and high-temperature applications, such as in aerospace and racing industries.
- Plastic (Polyamide, PEEK):
Plastic bearings are lightweight and offer good corrosion resistance. Polyamide bearings are commonly used due to their low friction and wear properties. Polyether ether ketone (PEEK) bearings provide high-temperature resistance and are suitable for demanding environments.
- Bronze:
Bronze bearings are often used in applications where self-lubrication is required. Bronze has good thermal conductivity and wear resistance. Bearings made from bronze are commonly used in machinery requiring frequent starts and stops.
- Hybrid Bearings:
Hybrid bearings combine steel rings with ceramic balls. These bearings offer a balance between the advantages of both materials, such as improved stiffness and reduced weight. Hybrid bearings are used in applications where high speeds and low friction are essential.
- Specialty Alloys:
For specific applications, specialty alloys may be used to meet unique requirements. For example, bearings used in extreme temperatures or corrosive environments may be made from materials like titanium or hastelloy.
- Coated Bearings:
Bearings may also be coated with thin layers of materials like diamond-like carbon (DLC) or other coatings to enhance performance, reduce friction, and improve wear resistance.
The choice of material depends on factors such as application requirements, operating conditions, load, speed, and environmental factors. Selecting the right material is essential for ensuring optimal bearing performance, longevity, and reliability in diverse industries and applications.
How do Miniature Ball Bearings Differ from Standard-sized Ones, and Where are They Commonly Used?
Miniature ball bearings, as the name suggests, are smaller in size compared to standard-sized ball bearings. They have distinct characteristics and are designed to meet the unique requirements of applications that demand compactness, precision, and efficient rotation in confined spaces. Here’s how miniature ball bearings differ from standard-sized ones and where they are commonly used:
- Size:
The most noticeable difference is their size. Miniature ball bearings typically have outer diameters ranging from a few millimeters to around 30 millimeters, while standard-sized ball bearings have larger dimensions suitable for heavier loads and higher speeds.
- Load Capacity:
Due to their smaller size, miniature ball bearings have lower load-carrying capacities compared to standard-sized bearings. They are designed for light to moderate loads and are often used in applications where precision and compactness are prioritized over heavy load support.
- Precision:
Miniature ball bearings are known for their high precision and accuracy. They are manufactured to tighter tolerances, making them suitable for applications requiring precise motion control and low levels of vibration.
- Speed:
Miniature ball bearings can achieve higher speeds than standard-sized bearings due to their smaller size and lower mass. This makes them ideal for applications involving high-speed rotation.
- Friction and Efficiency:
Miniature ball bearings generally have lower friction due to their smaller contact area. This contributes to higher efficiency and reduced heat generation in applications that require smooth and efficient motion.
- Applications:
Miniature ball bearings find applications in various industries and sectors:
- Electronics and Consumer Devices:
They are used in small motors, computer disk drives, printers, and miniature fans, where space is limited but precise motion is essential.
- Medical and Dental Equipment:
Miniature bearings are used in medical devices such as surgical instruments, dental handpieces, and diagnostic equipment due to their precision and compactness.
- Robotics and Automation:
Miniature ball bearings are integral to robotic arms, miniature conveyors, and automation systems, enabling precise movement in confined spaces.
- Aerospace and Defense:
They are used in applications like UAVs (drones), aerospace actuators, and satellite components where size and weight constraints are critical.
- Optics and Instrumentation:
Miniature bearings play a role in optical instruments, cameras, and measuring devices, providing smooth rotation and accurate positioning.
Overall, miniature ball bearings are specialized components designed for applications where space, precision, and efficient rotation are paramount. Their compactness and high precision make them crucial in various industries requiring reliable motion control in limited spaces.
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 2024-01-16
China Standard CZPT CZPT Rolamento Bearings 6201 6202 6204 6206 6208 6210 6211 6212 6213 6214 6215 6216 6217 6218 6219 6220 Zz 2RS DDU Deep Groove Ball Bearing bearing and race
Product Description
Product Description
NSK CZPT Rolamento Bearings ZZ 2RS DDU Deep Groove Ball Bearing
are the most widely used bearing type and are particularly versatile. They have low friction and are optimized for
low noise and low vibration which enables high rotational speeds. They accommodate radial and axial loads in both directions,
are easy to mount, and require less maintenance than other bearing types.
| Product name | Deep groove ball bearings |
| Material | Bearing Steel |
| Standard | DIN GB ISO JIS |
| Bearing Package | Barreled, bagged, boxed, palletized or as customers’ requirement. |
| Service | OEM service provided |
| Delivery time | 3-10 days depends on quantity needed |
Detailed Photos
Product Parameters
| 6000 series deep groove ball bearings | ||||||
| Bearing No. | Boundary Dimensions(mm) | Basic Load Rating(N) | Weight(KG) | |||
| d | D | B | Cr | Cor | ||
| 604 | 4 | 12 | 4 | 960 | 350 | 0.571 |
| 605 | 5 | 14 | 5 | 1070 | 420 | 0.0037 |
| 606 | 6 | 17 | 6 | 1960 | 730 | 0.0069 |
| 607 | 7 | 19 | 6 | 2800 | 1060 | 0.0082 |
| 608 | 8 | 22 | 7 | 3290 | 1360 | 0.0129 |
| 609 | 9 | 24 | 7 | 3330 | 1410 | 0.016 |
| 6000 | 10 | 26 | 8 | 4160 | 1780 | 0.019 |
| 6001 | 12 | 28 | 8 | 5110 | 2380 | 0.571 |
| 6002 | 15 | 32 | 9 | 5590 | 2840 | 0.03 |
| 6003 | 17 | 35 | 10 | 6000 | 3250 | 0.039 |
| 6004 | 20 | 42 | 12 | 9390 | 5571 | 0.069 |
| 6005 | 25 | 47 | 12 | 10060 | 5860 | 0.08 |
| 6006 | 30 | 55 | 13 | 11900 | 7460 | 0.12 |
| 6007 | 35 | 62 | 14 | 16210 | 10420 | 0.16 |
| 6008 | 40 | 68 | 15 | 17030 | 11700 | 0.19 |
| 6009 | 45 | 75 | 16 | 21080 | 14780 | 0.25 |
| 6571 | 50 | 80 | 16 | 22000 | 16260 | 0.26 |
| 6011 | 55 | 90 | 18 | 31500 | 18400 | 0.39 |
| 6012 | 60 | 95 | 18 | 30000 | 23000 | 0.42 |
| 6013 | 65 | 100 | 18 | 32000 | 25000 | 0.44 |
| 6014 | 70 | 110 | 20 | 38000 | 31000 | 0.6 |
| 6015 | 75 | 115 | 20 | 38000 | 31000 | 0.64 |
| 6016 | 80 | 125 | 22 | 47500 | 40000 | 0.85 |
| 6017 | 85 | 130 | 22 | 47500 | 40000 | 0.89 |
| 6018 | 90 | 140 | 24 | 63800 | 59000 | 1.15 |
| 6019 | 95 | 145 | 24 | 66700 | 62300 | 1.2 |
| 6571 | 100 | 150 | 24 | 72500 | 70000 | 1.25 |
| 6200 Series Miniature Deep Groove Ball Bearing | ||||||
| Bearing No. | Boundary Dimensions(mm) | Basic Load Rating(N) | Weight(KG) | |||
| d | D | B | Cr | Cor | ||
| 624 | 4 | 13 | 5 | 1150 | 400 | 0.0032 |
| 625 | 5 | 16 | 5 | 1880 | 680 | 0.0051 |
| 626 | 6 | 19 | 6 | 2800 | 1060 | 0. |
| 627 | 7 | 22 | 7 | 3290 | 1360 | 0.0131 |
| 628 | 8 | 24 | 8 | 3330 | 1410 | 0.017 |
| 629 | 9 | 26 | 8 | 4160 | 1780 | 0.0191 |
| 6200 | 10 | 30 | 9 | 5110 | 2380 | 0.032 |
| 6201 | 12 | 32 | 10 | 6180 | 3060 | 0.037 |
| 6202 | 15 | 35 | 11 | 7450 | 3700 | 0.045 |
| 6203 | 17 | 40 | 12 | 9560 | 4780 | 0.065 |
| 6204 | 20 | 47 | 14 | 12840 | 6650 | 0.11 |
| 6205 | 25 | 52 | 15 | 14571 | 7930 | 0.13 |
| 6206 | 30 | 62 | 16 | 19460 | 11310 | 0.2 |
| 6207 | 35 | 72 | 17 | 25670 | 15300 | 0.29 |
| 6208 | 40 | 80 | 18 | 29520 | 181400 | 0.37 |
| 6209 | 45 | 85 | 19 | 32500 | 20400 | 0.41 |
| 6210 | 50 | 90 | 20 | 35000 | 32300 | 0.46 |
| 6211 | 55 | 100 | 21 | 43500 | 29200 | 0.61 |
| 6212 | 60 | 110 | 22 | 52500 | 36000 | 0.78 |
| 6213 | 65 | 120 | 23 | 57200 | 45710 | 0.99 |
| 6214 | 70 | 125 | 24 | 62000 | 44000 | 1.05 |
| 6215 | 75 | 130 | 25 | 66000 | 49500 | 1.2 |
| 6216 | 80 | 140 | 26 | 72500 | 53000 | 1.4 |
| 6217 | 85 | 150 | 28 | 83500 | 64000 | 1.8 |
| 6218 | 90 | 160 | 30 | 96000 | 71500 | 2.15 |
| 6219 | 95 | 170 | 32 | 109000 | 82000 | 2.6 |
| 6220 | 100 | 180 | 34 | 122000 | 93000 | 3.15 |
Packaging & Shipping
Company Profile
Our Advantages
Our Advantages:
1. World-Class Bearing: We provide our customers with all types of indigenous bearing with world-class quality.
2. OEM or Non-Stand Bearings: Any requirement for Nonstandard bearings is Easily Fulfilled by us due to its vast knowledge and links in the industry.
3. Genuine products With Excellent Quality: The company has always proved the 100% quality products it provides with genuine intent.
4. After Sales Service and Technical Assistance: The company provides after-sales service and technical assistance as per the customer’s requirements and needs.
5. Quick Delivery: The company provides just-in-time delivery with its streamlined supply chain.
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.
FAQ
1.What is the minimum order quantity for this product?
Can be negotiated, we will try our best to meet customer needs.Our company is mainly based on wholesale sales,
most customers’orders are more than 1 ton.
2.What is your latest delivery time?
Most orders will be shipped within 7-15 days of payment being received.
3.Does your company have quality assurance?
Yes, for 1 years.
4.What is the competitiveness of your company’s products compared to other companies?
High precision, high speed, low noise.
5.What are the advantages of your company’s services compared to other companies?
Answer questions online 24 hours a day, reply in a timely manner, and provide various documents required by
customers for customs clearance or sales. 100% after-sales service.
6.Which payment method does your company support?
Do our best to meet customer needs, negotiable.
7.How to contact us quickly?
Please send us an inquiry or message and leave your other contact information, such as phone number,
account or account, we will contact you as soon as possible and provide the detailed information you need.
Please feel free to contact us, if you have any other question
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Contact Angle: | 0 |
|---|---|
| Aligning: | Non-Aligning Bearing |
| Separated: | Unseparated |
| Rows Number: | Single |
| Load Direction: | Radial Bearing |
| Material: | Bearing Steel |
| Samples: |
US$ 10/Piece
1 Piece(Min.Order) | |
|---|
| Customization: |
Available
| Customized Request |
|---|
What are the Materials Typically Used in Manufacturing Ball Bearings and Their Advantages?
Ball bearings are manufactured using a variety of materials, each chosen for its specific properties and advantages in various applications. Here are some commonly used materials in ball bearing manufacturing and their respective benefits:
- High-Carbon Chrome Steel (AISI 52100):
This is the most common material used for ball bearing manufacturing. It offers excellent hardness, wear resistance, and fatigue strength. High-carbon chrome steel bearings are suitable for a wide range of applications, from industrial machinery to automotive components.
- Stainless Steel (AISI 440C, AISI 304, AISI 316):
Stainless steel bearings are corrosion-resistant and suitable for applications where moisture, chemicals, or exposure to harsh environments are concerns. AISI 440C offers high hardness and corrosion resistance, while AISI 304 and AISI 316 provide good corrosion resistance and are often used in food and medical industries.
- Ceramic:
Ceramic bearings use silicon nitride (Si3N4) or zirconia (ZrO2) balls. Ceramic materials offer high stiffness, low density, and excellent resistance to corrosion and heat. Ceramic bearings are commonly used in high-speed and high-temperature applications, such as in aerospace and racing industries.
- Plastic (Polyamide, PEEK):
Plastic bearings are lightweight and offer good corrosion resistance. Polyamide bearings are commonly used due to their low friction and wear properties. Polyether ether ketone (PEEK) bearings provide high-temperature resistance and are suitable for demanding environments.
- Bronze:
Bronze bearings are often used in applications where self-lubrication is required. Bronze has good thermal conductivity and wear resistance. Bearings made from bronze are commonly used in machinery requiring frequent starts and stops.
- Hybrid Bearings:
Hybrid bearings combine steel rings with ceramic balls. These bearings offer a balance between the advantages of both materials, such as improved stiffness and reduced weight. Hybrid bearings are used in applications where high speeds and low friction are essential.
- Specialty Alloys:
For specific applications, specialty alloys may be used to meet unique requirements. For example, bearings used in extreme temperatures or corrosive environments may be made from materials like titanium or hastelloy.
- Coated Bearings:
Bearings may also be coated with thin layers of materials like diamond-like carbon (DLC) or other coatings to enhance performance, reduce friction, and improve wear resistance.
The choice of material depends on factors such as application requirements, operating conditions, load, speed, and environmental factors. Selecting the right material is essential for ensuring optimal bearing performance, longevity, and reliability in diverse industries and applications.
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 is a Ball Bearing and How does it Function in Various Applications?
A ball bearing is a type of rolling-element bearing that uses balls to reduce friction between moving parts and support radial and axial loads. It consists of an outer ring, an inner ring, a set of balls, and a cage that separates and maintains a consistent spacing between the balls. Here’s how ball bearings function in various applications:
- Reduction of Friction:
Ball bearings function by replacing sliding friction with rolling friction. The smooth, spherical balls minimize the contact area between the inner and outer rings, resulting in lower friction and reduced heat generation.
- Radial and Axial Load Support:
Ball bearings are designed to support both radial loads (forces perpendicular to the shaft’s axis) and axial loads (forces parallel to the shaft’s axis). The distribution of balls within the bearing ensures load-carrying capacity in multiple directions.
- Smooth Rotational Movement:
Ball bearings facilitate smooth and precise rotational movement. The rolling motion of the balls allows for controlled and continuous rotation with minimal resistance.
- Applications in Machinery:
Ball bearings are used in a wide range of machinery and equipment, including motors, generators, gearboxes, conveyors, and fans. They enable the efficient transfer of motion while reducing wear and energy losses.
- Automotive Industry:
Ball bearings are extensively used in automobiles for various applications, including wheel hubs, transmission systems, steering mechanisms, and engine components. They provide reliability and durability in challenging automotive environments.
- Industrial Machinery:
In industrial settings, ball bearings support rotating shafts and ensure the smooth operation of equipment such as pumps, compressors, and machine tools.
- High-Speed Applications:
Ball bearings are suitable for high-speed applications due to their low friction and ability to accommodate rapid rotation. They are used in applications like electric motors and aerospace components.
- Precision Instruments:
For precision instruments, such as watches, cameras, and medical devices, ball bearings provide accurate rotational movement and contribute to the overall performance of the instrument.
- Variety of Sizes and Types:
Ball bearings come in various sizes, configurations, and materials to suit different applications. Different types include deep groove ball bearings, angular contact ball bearings, thrust ball bearings, and more.
In summary, ball bearings are essential components in a wide range of applications where smooth rotation, load support, and reduced friction are critical. Their versatility, reliability, and efficiency make them indispensable in industries spanning from automotive to industrial machinery to precision instruments.
editor by CX 2024-01-11
China best CZPT CZPT Ball and Roller Bearing Lm11749/10 Tapered Roller Bearings wheel bearing
Product Description
Timken CZPT Ball and Tapered Roller Bearing Factory Lm11749/10 Inch Taper Roller Bearing
NO 1. our adwantages:
1. 14 years bearing products manufacturing and 4 years exporting experiences.
2. OEM order and non-standard bearing order can be accepted.
3. Our main bearing products include Deep groove ball bearings, tapered roller bearings, cylindrical rollerbearings, spherical ball bearings, spherical roller bearings, single row angular contact bearings, double row angular contact bearings, needle roller bearings, thrust ball bearings, spherical plain bearings, spherical bearings, automotive bearings pump bearings, and many nonstandard bearings are also in our product range.
4. Sample available
NO 2. Description: Inch Tapered Roller bearing
1. Inch Taper roller bearing mainly bear radial primarily diameter, the axial load. Bearing capacity depends on the Angle of the outer ring raceway, the greater the Angle, the greater the carrying capacity.
2. Inch Taper roller bearing type belongs to the separation bearing, , according to the bearing the number of columns of the scroll body can be divided into single row, double row and 4 row circular cone roller bearings.
3. Single row inch taper roller bearing clearance to users in the installation adjustment; Double row and four row circular cone roller bearings clearance has according to user requirements for a given when the products leave the factory, not the user.
4.Tapered roller bearing are widely used in car: front-wheel, rear wheel, transmission, differential pinion shaft. Machine tool spindles, construction machinery, largescale agricultural machinery, railway vehicles, gear reduction, the rolling mill roll neck and deceleration devices
5. Equipment, instrument, building machinery, rolling stock agricultural machinery and various specialized machineries.
NO 3. OEM all brand bearing
1. deep groove ball bearing 6000,6200,6300,6400,61800,61900,Z,RS,ZZ,2RS
2. spherical roller bearing 22200,22300,23000,24000,23100,24100,CA,CC,E,W33
3. cylindrical roller bearing N,NU,NJ,NN,NUP,E,ECP,ECM,ECJ
4. taper roller bearing 35710,30300,32200,32300,31300,32000
5. Aligning ball bearing 1200,1300,2200,2300,
6. needle roller bearing NA,NAV,NK,NKI,RNA,NK,RNAV,ZKLF,ZKLN,ZARF,ZARN
7. thrust ball bearing 51100,51200,51300,51400,E,M
8. angular contact ball bearing7000,7100,7200,7300,AC,BECBM,C
9. spherical plain bearing GE,GEG,GEEW,U,UC,UG,GX,GAC,SA,SABP
10.Wheel hub bearing /ceramic bearing/plastic bearing/lazy susan bearing
NO 4. Tapered Roller Bearing Specification:
| Seals Types | OPEN |
| Vibration Level | Z1V1,Z2V2,Z3V3 |
| Clearance | C2,C0,C3,C4,C5 |
| Tolerance Codes | ABEC-1,ABEC-3,ABEC-5 |
| Materral | GCr15-China/AISI52100-USA/Din100Cr6-Germany |
| MOQ | 1Set at least |
| Delivery Time | 5-15 days after contract |
| Payment Terms | TT/PAPAL/WESTERN UNION |
| Package | Tube package+outer carton+pallets; Single box+outer carton+pallets; Tube packge+middle box+outer carton+pallets; According to your requirement |
NO 5. Tapered Roller Bearing Models:
| (mm) |
Cr(N) |
Cor(N) |
(rpm) | (mm) a |
e | (kg) | ||||||||||||||
| d | D | T | B | C | r1 (min) |
r2 (min) |
Cone | Cup | da (min) |
db (max) |
Cone | Cup | Cone | Cup | ||||||
| 15.875 | 34.988 | 10.998 | 10.998 | 8.712 | 1.3 | 1.3 | L21549 | L21511 | 13800 | 13400 | 11000 | 15000 | 3.3 | 0.32 | 1.9 | 1 | 0.033 | 0.019 | L21549 | L21511 |
| 15.875 | 42.862 | 14.288 | 14.288 | 9.525 | 1.5 | 1.5 | 11590 | 11520 | 17800 | 17800 | 8500 | 12000 | 1.1 | 0.7 | 0.85 | 0.47 | 0.06 | 0.04 | 11590 | 11520 |
| 15.875 | 42.863 | 14.288 | 14.288 | 9.525 | 1.6 | 1.6 | H-11590 | H-11520 | 17800 | 17700 | 8600 | 12000 | 1.2 | 0.7 | 0.85 | 0.47 | 0.06 | 0.041 | H-11590 | H-11520 |
| 16.993 | 39.992 | 12.014 | 11.153 | 9.525 | 0.8 | 1.3 | A6067 | A6157 | 14900 | 15700 | 10000 | 14000 | 1.5 | 0.53 | 1.1 | 0.63 | 0.04 | 0.032 | A6067 | A6157 |
| 17.462 | 39.878 | 13.843 | 14.605 | 10.668 | 1.3 | 1.3 | LM11749 | LM11710 | 23400 | 23000 | 10000 | 13000 | 5.2 | 0.29 | 2.1 | 1.2 | 0.055 | 0.026 | LM11749 | LM11710 |
| 17.463 | 39.878 | 13.843 | 14.605 | 10.668 | 1.2 | 1.2 | H-LM11749 | H-LM11710 | 25400 | 26000 | 8800 | 12000 | 5.1 | 0.29 | 2.1 | 1.15 | 0.058 | 0.571 | H-LM11749 | H-LM11710 |
| 19.05 | 39.992 | 12.014 | 11.153 | 9.525 | 1 | 1.3 | A6075 | A6157 | 14900 | 15700 | 10000 | 14000 | 1.5 | 0.53 | 1.1 | 0.63 | 0.037 | 0.032 | A6075 | A6157 |
| 19.05 | 45.237 | 15.494 | 16.637 | 12.065 | 1.2 | 1.2 | H-LM11949 | H-LM11910 | 29400 | 35710 | 7800 | 11000 | 5.5 | 0.3 | 2 | 1.1 | 0.081 | 0.044 | H-LM11949 | H-LM11910 |
| 19.05 | 45.237 | 15.494 | 16.637 | 12.065 | 1.3 | 1.3 | LM11949 | LM11910 | 29900 | 30500 | 9000 | 12000 | 5.6 | 0.3 | 2 | 1.1 | 0.08 | 0.045 | LM11949 | LM11910 |
| 19.05 | 47 | 14.381 | 14.381 | 11.112 | 1.3 | 1.3 | 05075 | 5715 | 24900 | 25400 | 8500 | 11000 | 3.9 | 0.36 | 1.7 | 0.92 | 0.074 | 0.046 | 05075 | 5715 |
| 19.05 | 49.225 | 18.034 | 19.05 | 14.288 | 1.2 | 1.2 | H- 0571 7 | H-5715 | 37700 | 37700 | 7500 | 10000 | 7.4 | 0.27 | 2.26 | 1.24 | 0.116 | 0.066 | H- 0571 7 | H-5715 |
| 19.05 | 49.225 | 18.034 | 19.05 | 14.288 | 1.3 | 1.3 | 0571 7 | 5715 | 37500 | 37500 | 8500 | 11000 | 9.1 | 0.27 | 2.3 | 1.2 | 0.11 | 0.065 | 0571 7 | 5715 |
| 19.05 | 49.225 | 21.209 | 19.05 | 17.463 | 1.3 | 1.5 | 0571 7 | 5716 | 37500 | 37500 | 8500 | 11000 | 7.3 | 0.27 | 2.3 | 1.2 | 0.11 | 0.085 | 0571 7 | 5716 |
| 19.05 | 49.225 | 21.209 | 19.05 | 17.463 | 1.3 | 3.5 | 0571 7 | 5714 | 37500 | 37500 | 8500 | 11000 | 7.3 | 0.27 | 2.3 | 1.2 | 0.11 | 0.081 | 0571 7 | 5714 |
| 19.05 | 49.225 | 19.845 | 21.539 | 14.288 | 1.3 | 1.3 | 09078 | 5715 | 37500 | 37500 | 8500 | 11000 | 9.1 | 0.27 | 2.3 | 1.2 | 0.11 | 0.065 | 09078 | 5715 |
| 19.05 | 49.225 | 23.02 | 21.539 | 17.463 | 1.3 | 1.5 | 09078 | 5716 | 37500 | 37500 | 8500 | 11000 | 7.3 | 0.27 | 2.3 | 1.2 | 0.11 | 0.085 | 09078 | 5716 |
| 19.05 | 49.225 | 23.02 | 21.539 | 17.463 | 1.3 | 3.5 | 09078 | 5714 | 37500 | 37500 | 8500 | 11000 | 7.3 | 0.27 | 2.3 | 1.2 | 0.11 | 0.081 | 09078 | 5714 |
| 19.05 | 49.225 | 19.845 | 21.539 | 14.288 | 1.3 | 1.3 | 09074 | 5715 | 37500 | 37500 | 8500 | 11000 | 9.1 | 0.27 | 2.3 | 1.2 | 0.11 | 0.065 | 09074 | 5715 |
| 19.05 | 49.225 | 23.02 | 21.539 | 17.463 | 1.3 | 1.5 | 09074 | 5716 | 37500 | 37500 | 8500 | 11000 | 7.3 | 0.27 | 2.3 | 1.2 | 0.11 | 0.085 | 09074 | 5716 |
| 19.05 | 49.225 | 23.02 | 21.539 | 17.463 | 1.3 | 3.5 | 09074 | 5714 | 37500 | 37500 | 8500 | 11000 | 7.3 | 0.27 | 2.3 | 1.2 | 0.11 | 0.081 | 09074 | 5714 |
| 19.987 | 47 | 14.381 | 14.381 | 11.112 | 1.5 | 1.3 | 05079 | 5715 | 24900 | 25400 | 8500 | 11000 | 3.9 | 0.36 | 1.7 | 0.92 | 0.07 | 0.046 | 05079 | 5715 |
| 20.638 | 49.225 | 19.845 | 19.845 | 15.875 | 1.5 | 1.5 | 12580 | 12520 | 36000 | 37000 | 8000 | 11000 | 7.1 | 0.32 | 1.9 | 1 | 0.115 | 0.066 | 12580 | 12520 |
| 21.43 | 50.005 | 17.526 | 18.288 | 13.97 | 1.17 | 1.17 | H-M12649 | H-M12610 | 39100 | 40700 | 7000 | 10000 | 6.4 | 0.28 | 2.16 | 1.19 | 0.112 | 0.06 | H-M12649 | H-M12610 |
| 21.43 | 50.005 | 17.526 | 18.288 | 13.97 | 1.3 | 1.3 | M12649 | M12610 | 37000 | 37500 | 8000 | 11000 | 6.4 | 0.28 | 2.2 | 1.2 | 0.11 | 0.059 | M12649 | M12610 |
| 22 | 45.237 | 15.494 | 16.637 | 12.065 | 1.27 | 1.27 | H-LM12749 | H-LM12710 | 35710 | 34600 | 7400 | 10000 | 5.5 | 0.31 | 1.96 | 1.08 | 0.078 | 0.038 | H-LM12749 | H-LM12710 |
| 22 | 45.237 | 15.494 | 16.637 | 12.065 | 1.3 | 1.3 | LM12749 | LM12710 | 28700 | 33000 | 8500 | 11000 | 5.4 | 0.31 | 2 | 1.1 | 0.079 | 0.039 | LM12749 | LM12710 |
| 22 | 45.975 | 15.494 | 16.637 | 12.065 | 1.27 | 1.27 | H-LM12749 | H-LM12711 | 35710 | 34600 | 7400 | 10000 | 5.5 | 0.31 | 1.96 | 1.08 | 0.078 | 0.043 | H-LM12749 | H-LM12711 |
| 22.225 | 50.005 | 13.495 | 14.26 | 9.525 | 1.3 | 1 | 07087 | 5716 | 26000 | 27700 | 7500 | 10000 | 2.9 | 0.4 | 1.5 | 0.82 | 0.095 | 0.035 | 07087 | 5716 |
| 22.225 | 50.005 | 17.526 | 18.288 | 13.97 | 1.3 | 1.3 | M12648 | M12610 | 37000 | 37500 | 8000 | 11000 | 6.4 | 0.28 | 2.2 | 1.2 | 0.107 | 0.059 | M12648 | M12610 |
| 22.225 | 51.994 | 15.011 | 14.26 | 12.7 | 1.3 | 1.3 | 07087 | 07204 | 26000 | 27700 | 7500 | 10000 | 4.4 | 0.4 | 1.5 | 0.82 | 0.094 | 0.06 | 07087 | 07204 |
| 22.225 | 52.388 | 19.368 | 20.168 | 14.288 | 1.5 | 1.5 | 1380 | 1328 | 42500 | 47500 | 7500 | 10000 | 7.6 | 0.29 | 2.1 | 1.1 | 0.13 | 0.067 | 1380 | 1328 |
| 22.225 | 52.388 | 19.368 | 20.168 | 14.288 | 1.6 | 1.6 | H-1380 | H-1328 | 36700 | 37900 | 6700 | 9400 | 7.7 | 0.29 | 2.05 | 1.13 | 0.131 | 0.068 | H-1380 | H-1328 |
| 22.225 | 57.15 | 22.225 | 22.225 | 17.463 | 0.8 | 1.6 | H-1280 | H-1220 | 52600 | 55700 | 6300 | 8900 | 7.9 | 0.35 | 1.73 | 0.95 | 0.188 | 0.107 | H-1280 | H-1220 |
| 23.812 | 56.896 | 19.368 | 19.837 | 15.875 | 0.8 | 1.3 | 1779 | 1729 | 40500 | 44000 | 7100 | 9500 | 6.8 | 0.31 | 2 | 1.1 | 0.143 | 0.1 | 1779 | 1729 |
| 24.981 | 50.005 | 13.495 | 14.26 | 9.525 | 1.5 | 1 | 07098 | 5716 | 26000 | 27700 | 7500 | 10000 | 2.9 | 0.4 | 1.5 | 0.82 | 0.085 | 0.035 | 07098 | 5716 |
| 24.981 | 51.994 | 15.011 | 14.26 | 12.7 | 1.5 | 1.3 | 07098 | 07204 | 26000 | 27700 | 7500 | 10000 | 2.9 | 0.4 | 1.5 | 0.82 | 0.085 | 0.06 | 07098 | 07204 |
| 25 | 50.005 | 13.495 | 14.26 | 9.525 | 1.5 | 1 | 07097 | 5716 | 26000 | 27700 | 7500 | 10000 | 2.9 | 0.4 | 1.5 | 0.82 | 0.096 | 0.035 | 07097 | 5716 |
| 25 | 51.994 | 15.011 | 14.26 | 12.7 | 1.5 | 1.3 | 07097 | 07204 | 26000 | 27700 | 7500 | 10000 | 2.9 | 0.4 | 1.5 | 0.82 | 0.096 | 0.06 | 07097 | 07204 |
| 25.4 | 50.005 | 13.495 | 14.26 | 9.525 | 1 | 1 | 5710 | 5716 | 26000 | 27700 | 7500 | 10000 | 2.9 | 0.4 | 1.5 | 0.82 | 0.08 | 0.035 | 5710 | 5716 |
| 25.4 | 50.292 | 14.224 | 14.732 | 10.668 | 1.2 | 1.2 | H-L44643 | H-L44610 | 31200 | 37000 | 6500 | 9100 | 3.2 | 0.37 | 1.6 | 0.88 | 0.092 | 0.04 | H-L44643 | H-L44610 |
| 25.4 | 50.292 | 14.224 | 14.732 | 10.668 | 1.3 | 1.3 | L44643 | L44610 | 28500 | 34000 | 7300 | 10000 | 3.3 | 0.37 | 1.6 | 0.88 | 0.085 | 0.038 | L44643 | L44610 |
| 25.4 | 51.994 | 15.011 | 14.26 | 12.7 | 1 | 1.3 | 5710 | 07204 | 26000 | 27700 | 7500 | 10000 | 4.4 | 0.4 | 1.5 | 0.82 | 0.08 | 0.06 | 5710 | 07204 |
| 25.4 | 62 | 19.05 | 20.638 | 14.288 | 0.8 | 1.3 | 15101 | 15245 | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.215 | 0.08 | 15101 | 15245 |
| 25.4 | 62 | 19.05 | 20.638 | 14.288 | 3.5 | 1.3 | 15100 | 15245 | 45000 | 54500 | 6000 | 8000 | 4.3 | 0.35 | 1.7 | 0.94 | 0.215 | 0.08 | 15100 | 15245 |
| 25.4 | 63.5 | 20.638 | 20.638 | 15.875 | 0.8 | 1.3 | 15101 | 15250 | 45000 | 54500 | 6000 | 8000 | 7.4 | 0.35 | 1.7 | 0.94 | 0.215 | 0.114 | 15101 | 15250 |
| 25.4 | 63.5 | 20.638 | 20.638 | 15.875 | 0.8 | 1.5 | 15101 | 15250X | 45000 | 54500 | 6000 | 8000 | 7.4 | 0.35 | 1.7 | 0.94 | 0.215 | 0.114 | 15101 | 15250X |
| 25.4 | 63.5 | 19.05 | 20.638 | 15.875 | 3.5 | 1.3 | 15100 | 15250 | 45000 | 54500 | 6000 | 8000 | 4.3 | 0.35 | 1.7 | 0.94 | 0.215 | 0.114 | 15100 | 15250 |
| 25.4 | 63.5 | 20.638 | 20.638 | 15.875 | 3.5 | 1.5 | 15100 | 15250X | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.215 | 0.114 | 15100 | 15250X |
| 25.4 | 65.088 | 22.225 | 21.463 | 15.875 | 1.5 | 1.5 | 23100 | 23256 | 43000 | 45000 | 5600 | 8000 | 2.2 | 0.73 | 0.82 | 0.45 | 0.21 | 0.143 | 23100 | 23256 |
| 26.988 | 50.292 | 14.224 | 14.732 | 10.668 | 3.5 | 1.3 | L44649 | L44610 | 28500 | 34000 | 7300 | 10000 | 3.3 | 0.37 | 1.6 | 0.88 | 0.08 | 0.038 | L44649 | L44610 |
| 26.988 | 51.15 | 17.462 | 17.462 | 13.495 | 3.5 | 1.5 | 15580 | 15520 | 42500 | 49000 | 6700 | 9000 | 2.8 | 0.35 | 1.7 | 0.94 | 0.135 | 0.07 | 15580 | 15520 |
| 26.988 | 62 | 19.05 | 20.638 | 14.288 | 0.8 | 1.3 | 15106 | 15245 | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.205 | 0.08 | 15106 | 15245 |
| 28.575 | 57.15 | 19.845 | 19.355 | 15.875 | 3.6 | 1.6 | H-1988 | H-1922 | 48800 | 57100 | 5800 | 8200 | 5.9 | 0.33 | 1.82 | 1 | 0.151 | 0.077 | H-1988 | H-1922 |
| 28.575 | 68.263 | 22.225 | 22.225 | 17.463 | 0.8 | 1.6 | H-57174 | H-57120 | 51000 | 61100 | 5000 | 7000 | 5.1 | 0.42 | 1.44 | 0.79 | 0.251 | 0.153 | H-57174 | H-57120 |
| 28.575 | 73.571 | 22.225 | 22.225 | 17.462 | 0.8 | 3.3 | 57172 | 57120 | 55000 | 65500 | 5200 | 7000 | 3.8 | 0.45 | 1.3 | 0.73 | 0.313 | 0.158 | 57172 | 57120 |
| 28.575 | 73.571 | 22.225 | 22.225 | 17.463 | 0.8 | 3.2 | H-57172 | H-57120 | 55000 | 65700 | 4600 | 6500 | 3.7 | 0.45 | 1.32 | 0.73 | 0.317 | 0.163 | H-57172 | H-57120 |
| 29.985 | 62 | 16.002 | 16.566 | 14.288 | 1.5 | 1.5 | 17118 | 17244 | 35000 | 36000 | 6300 | 8500 | 3.5 | 0.38 | 1.6 | 0.86 | 0.137 | 0.09 | 17118 | 17244 |
| 30 | 62 | 19.05 | 20.638 | 14.288 | 1.3 | 1.3 | 15117 | 15245 | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.18 | 0.08 | 15117 | 15245 |
| 30 | 63.5 | 20.638 | 20.638 | 15.875 | 1.3 | 1.3 | 15117 | 15250 | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.18 | 0.114 | 15117 | 15250 |
| 30 | 63.5 | 20.638 | 20.638 | 15.875 | 1.3 | 1.5 | 15117 | 15250X | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.18 | 0.114 | 15117 | 15250X |
| 30 | 72.085 | 22.385 | 19.202 | 18.415 | 0.8 | 2.4 | H-14118 | H-14283 | 46100 | 55000 | 4900 | 6900 | 4.4 | 0.38 | 1.57 | 0.86 | 0.238 | 0.198 | H-14118 | H-14283 |
| 30.162 | 64.292 | 21.433 | 21.433 | 16.67 | 1.5 | 1.5 | M86649 | M86610 | 55000 | 72500 | 6000 | 8000 | 3.3 | 0.55 | 1.1 | 0.6 | 0.21 | 0.125 | M86649 | M86610 |
| 30.163 | 64.292 | 21.433 | 21.433 | 16.67 | 1.57 | 1.57 | H-M86649 | H-M86610 | 55200 | 70700 | 5300 | 7500 | 3.4 | 0.55 | 1.1 | 0.6 | 0.213 | 0.128 | H-M86649 | H-M86610 |
| 30.213 | 62 | 19.05 | 20.638 | 14.288 | 0.8 | 1.3 | 15120 | 15245 | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.183 | 0.08 | 15120 | 15245 |
| 30.213 | 62 | 19.05 | 20.638 | 14.288 | 3.5 | 1.3 | 15118 | 15245 | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.178 | 0.08 | 15118 | 15245 |
| 30.213 | 63.5 | 20.638 | 20.638 | 15.875 | 0.8 | 1.3 | 15120 | 15250X | 45000 | 54500 | 6000 | 8000 | 7.4 | 0.35 | 1.7 | 0.94 | 0.183 | 0.114 | 15120 | 15250X |
| 30.213 | 63.5 | 20.638 | 20.638 | 15.875 | 0.8 | 1.5 | 15120 | 15250 | 45000 | 54500 | 6000 | 8000 | 7.4 | 0.35 | 1.7 | 0.94 | 0.183 | 0.114 | 15120 | 15250 |
| 30.213 | 63.5 | 20.638 | 20.638 | 15.875 | 3.5 | 1.3 | 15118 | 15250X | 45000 | 54500 | 6000 | 8000 | 7.4 | 0.35 | 1.7 | 0.94 | 0.178 | 0.114 | 15118 | 15250X |
| 30.213 | 63.5 | 20.638 | 20.638 | 15.875 | 3.5 | 1.5 | 15118 | 15250 | 45000 | 54500 | 6000 | 8000 | 7.4 | 0.35 | 1.7 | 0.94 | 0.178 | 0.114 | 15118 | 15250 |
| 31.75 | 59.131 | 15.875 | 16.764 | 11.811 | 999 | 1.3 | LM67048 | LM67571 | 36500 | 43500 | 6000 | 8500 | 2.9 | 0.41 | 1.5 | 0.8 | 0.12 | 0.062 | LM67048 | LM67571 |
| 31.75 | 61.999 | 18.161 | 19.05 | 14.288 | 999 | 1.2 | H-15123 | H-15245 | 44600 | 50700 | 5400 | 7500 | 4.8 | 0.35 | 1.71 | 0.94 | 0.157 | 0.082 | H-15123 | H-15245 |
| 31.75 | 62 | 18.161 | 19.05 | 14.288 | 999 | 1.3 | 15123 | 15245 | 43500 | 51500 | 6000 | 8000 | 5 | 0.35 | 1.7 | 0.94 | 0.155 | 0.08 | 15123 | 15245 |
| 31.75 | 62 | 19.05 | 20.638 | 14.288 | 0.8 | 1.3 | 15126 | 15245 | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.167 | 0.08 | 15126 | 15245 |
| 31.75 | 62 | 19.05 | 20.638 | 14.288 | 3.5 | 1.3 | 15125 | 15245 | 45000 | 54500 | 6000 | 8000 | 5.8 | 0.35 | 1.7 | 0.94 | 0.165 | 0.08 | 15125 | 15245 |
| 31.75 | 63.5 | 20.638 | 19.05 | 15.875 | 999 | 1.3 | 15123 | 15250 | 45000 | 54500 | 6000 | 8000 | 7.4 | 0.35 | 1.7 | 0.94 | 0.155 | 0.114 | 15123 | 15250 |
| 31.75 | 63.5 | 20.638 | 19.05 | 15.875 | 999 | 1.5 | 15123 | 15250X | 45000 | 54500 | 6000 | 8000 | 7.4 | 0.35 | 1.7 | 0.94 | 0.155 | 0.114 | 15123 | 15250X |
| 31.75 | 63.5 | 20.638 | 20.638 | 15.875 | 0.8 | 1.3 | 15126 | 15250 | 45000 | 54500 | 6000 | 8000 | 7.3 | 0.35 | 1.7 | 0.94 | 0.167 | 0.114 | 15126 | 15250 |
| 31.75 | 63.5 | 20.638 | 20.638 | 15.875 | 0.8 | 1.5 | 15126 | 15250X | 45000 | 54500 | 6000 | 8000 | 7.3 | 0.35 | 1.7 | 0.94 | 0.167 | 0.114 | 15126 | 15250X |
| 31.75 | 63.5 | 20.638 | 20.638 | 15.875 | 3.5 | 1.3 | 15125 | 15250 | 45000 | 54500 | 6000 | 8000 | 7.3 | 0.35 | 1.7 | 0.94 | 0.165 | 0.114 | 15125 | 15250 |
| 31.75 | 63.5 | 20.638 | 20.638 | 15.875 | 3.5 | 1.5 | 15125 | 15250X | 45000 | 54500 | 6000 | 8000 | 7.3 | 0.35 | 1.7 | 0.94 | 0.165 | 0.114 | 15125 | 15250X |
| 31.75 | 66.421 | 25.4 | 25.357 | 20.638 | 0.8 | 3.2 | H-2580 | H-2520 | 71400 | 85100 | 5000 | 7000 | 9.4 | 0.27 | 2.19 | 1.21 | 0.279 | 0.128 | H-2580 | H-2520 |
| 31.75 | 68.263 | 22.225 | 22.225 | 17.463 | 3.6 | 1.6 | H-57175 | H-57120 | 51000 | 61100 | 5000 | 7000 | 5.1 | 0.42 | 1.44 | 0.79 | 0.223 | 0.153 | H-57175 | H-57120 |
| 31.75 | 69.012 | 19.845 | 19.583 | 15.875 | 3.5 | 1.3 | 14125A | 14276 | 44500 | 55000 | 5500 | 7500 | 4.3 | 0.38 | 1.6 | 0.87 | 0.22 | 0.135 | 14125A | 14276 |
| 31.75 | 69.012 | 19.845 | 19.583 | 15.875 | 3.5 | 3.3 | 14125A | 14274 | 44500 | 55000 | 5500 | 7500 | 4.3 | 0.38 | 1.6 | 0.87 | 0.22 | 0.13 | 14125A | 14274 |
| 31.75 | 69.85 | 23.812 | 25.357 | 19.05 | 0.8 | 1.3 | 2580 | 2523 | 70000 | 84000 | 5600 | 7500 | 8.6 | 0.27 | 2.2 | 1.2 | 0.29 | 0.165 | 2580 | 2523 |
| 31.75 | 69.85 | 23.813 | 25.357 | 19.05 | 0.8 | 1.2 | H-2580 | H-2523 | 71400 | 85100 | 5000 | 7000 | 9.4 | 0.27 | 2.19 | 1.21 | 0.282 | 0.169 | H-2580 | H-2523 |
| 33.338 | 68.262 | 22.225 | 22.225 | 17.462 | 0.8 | 1.5 | M88048 | M88571 | 56500 | 71500 | 5600 | 7500 | 2.8 | 0.55 | 1.1 | 0.6 | 0.23 | 0.09 | M88048 | M88571 |
| 33.338 | 68.263 | 22.225 | 22.225 | 17.463 | 0.8 | 1.6 | H-M88048 | H-M88571 | 56100 | 71100 | 5000 | 7000 | 3 | 0.55 | 1.1 | 0.6 | 0.234 | 0.147 | H-M88048 | H-M88571 |
| 33.338 | 69.012 | 19.845 | 19.583 | 15.875 | 0.8 | 1.2 | H-14131 | H-14276 | 46100 | 55000 | 4900 | 6900 | 4.4 | 0.38 | 1.57 | 0.86 | 0.201 | 0.136 | H-14131 | H-14276 |
| 33.338 | 69.012 | 19.845 | 19.583 | 15.875 | 3.5 | 1.3 | 14130 | 14276 | 44500 | 55000 | 5500 | 7500 | 4.3 | 0.38 | 1.6 | 0.87 | 0.21 | 0.135 | 14130 | 14276 |
| 33.338 | 69.012 | 19.845 | 19.583 | 15.875 | 3.5 | 3.3 | 14130 | 14274 | 44500 | 55000 | 5500 | 7500 | 4.3 | 0.38 | 1.6 | 0.87 | 0.21 | 0.13 | 14130 | 14274 |
| 34.925 | 65.088 | 18.034 | 18.288 | 13.97 | 999 | 1.3 | LM48548 | LM48510 | 48500 | 59000 | 5600 | 7500 | 3.7 | 0.38 | 1.6 | 0.88 | 0.16 | 0.085 | LM48548 | LM48510 |
| 34.925 | 69.012 | 19.845 | 19.583 | 15.875 | 1.5 | 1.3 | 14137A | 14276 | 44500 | 55000 | 5500 | 7500 | 4.3 | 0.38 | 1.6 | 0.87 | 0.19 | 0.135 | 14137A | 14276 |
| 34.925 | 69.012 | 19.845 | 19.583 | 15.875 | 1.5 | 3.3 | 14137A | 14274 | 44500 | 55000 | 5500 | 7500 | 4.3 | 0.38 | 1.6 | 0.87 | 0.19 | 0.13 | 14137A | 14274 |
| 34.925 | 69.012 | 19.845 | 19.583 | 15.875 | 3.5 | 1.3 | 14138A | 14276 | 44500 | 55000 | 5500 | 7500 | 4.3 | 0.38 | 1.6 | 0.87 | 0.189 | 0.135 | 14138A | 14276 |
| 34.925 | 69.012 | 19.845 | 19.583 | 15.875 | 3.5 | 3.3 | 14138A | 14274 | 44500 | 55000 | 5500 | 7500 | 4.3 | 0.38 | 1.6 | 0.87 | 0.189 | 0.13 | 14138A | 14274 |
| 34.925 | 69.012 | 19.845 | 19.583 | 15.875 | 3.6 | 1.2 | H-14138A | H-14276 | 46100 | 55000 | 4900 | 6900 | 4.4 | 0.38 | 1.57 | 0.86 | 0.185 | 0.136 | H-14138A | H-14276 |
| 34.925 | 72.233 | 25.4 | 25.4 | 19.842 | 2.4 | 2.4 | H-HM88649 | H-HM88610 | 66900 | 87400 | 4700 | 6600 | 4.7 | 0.55 | 1.1 | 0.6 | 0.305 | 0.189 | H-HM88649 | H-HM88610 |
| 34.925 | 73.571 | 23.812 | 24.608 | 19.05 | 1.5 | 0.8 | 25877 | 25821 | 73000 | 88500 | 5200 | 7100 | 8.1 | 0.29 | 2.1 | 1.1 | 0.31 | 0.165 | 25877 | 25821 |
| 34.925 | 73.571 | 23.813 | 24.608 | 19.05 | 1.6 | 0.8 | H-25877R | H-25821 | 72200 | 87300 | 4600 | 6500 | 8.2 | 0.29 | 2.07 | 1.14 | 0.309 | 0.167 | H-25877R | H-25821 |
| 34.925 | 76.2 | 29.37 | 28.575 | 23.812 | 1.5 | 3.3 | 31594 | 31520 | 80000 | 96000 | 5000 | 6800 | 7.7 | 0.4 | 1.5 | 0.82 | 0.4 | 0.23 | 31594 | 31520 |
| 34.925 | 76.2 | 29.37 | 28.575 | 23.813 | 3.6 | 3.3 | H-31593 | H-31520 | 80900 | 97400 | 4500 | 6300 | 7.8 | 0.4 | 1.49 | 0.82 | 0.383 | 0.238 | H-31593 | H-31520 |
| 34.925 | 80.167 | 29.37 | 30.391 | 23.813 | 3.6 | 3.2 | 3379 | 3320 | 91000 | 106000 | 4200 | 5900 | 10.7 | 0.27 | 2.2 | 1.21 | 0.503 | 0.22 | 3379 | 3320 |
| 34.987 | 59.131 | 15.875 | 16.764 | 11.938 | 999 | 1.27 | H-L68149 | H-L68110 | 35700 | 48500 | 5300 | 7500 | 2.7 | 0.42 | 1.44 | 0.79 | 0.112 | 0.057 | H-L68149 | H-L68110 |
| 34.987 | 59.975 | 15.875 | 16.764 | 11.938 | 999 | 1.27 | H-L68149 | H-L68111 | 35700 | 48500 | 5300 | 7500 | 2.7 | 0.42 | 1.44 | 0.79 | 0.112 | 0.064 | H-L68149 | H-L68111 |
| 35 | 59.131 | 15.875 | 16.764 | 11.938 | 999 | 1.3 | L68149 | L68110 | 34000 | 46000 | 6000 | 8000 | 2.5 | 0.42 | 1.4 | 0.79 | 0.11 | 0.055 | L68149 | L68110 |
| 36.487 | 73.571 | 23.812 | 24.608 | 19.05 | 1.5 | 0.8 | 25880 | 25821 | 73000 | 88500 | 5200 | 7100 | 8.1 | 0.29 | 2.1 | 1.1 | 0.3 | 0.165 | 25880 | 25821 |
| 36.512 | 69.012 | 19.05 | 19.05 | 15.083 | 3.5 | 0.8 | 13682 | 13620 | 47000 | 60000 | 5300 | 7100 | 3 | 0.4 | 1.5 | 0.82 | 0.19 | 0.105 | 13682 | 13620 |
| 36.512 | 76.2 | 29.37 | 28.575 | 23.02 | 3.5 | 3.3 | HM89449 | HM89410 | 79500 | 108000 | 5000 | 6800 | 5.6 | 0.55 | 1.1 | 0.6 | 0.37 | 0.25 | HM89449 | HM89410 |
| 36.512 | 85.725 | 30.162 | 30.162 | 23.813 | 0.8 | 3.3 | 3878 | 3820 | 91000 | 115000 | 4300 | 6000 | 8.2 | 0.4 | 1.5 | 0.82 | 0.525 | 0.28 | 3878 | 3820 |
| 36.513 | 93.663 | 31.75 | 31.75 | 26.195 | 1.6 | 3.2 | 46143 | 46368 | 105000 | 134000 | 3600 | 5100 | 7.7 | 0.4 | 1.49 | 0.82 | 0.728 | 0.412 | 46143 | 46368 |
| 38 | 63 | 17 | 17 | 13.5 | 3.56 | 1.27 | H-JL69349 | H-JL69310 | 43500 | 58200 | 5000 | 7000 | 2.4 | 0.42 | 1.44 | 0.79 | 0.128 | 0.072 | H-JL69349 | H-JL69310 |
| 38.1 | 63.5 | 12.7 | 11.908 | 9.525 | 1.5 | 0.8 | 13889 | 13830 | 27200 | 34000 | 5400 | 7300 | 0.8 | 0.35 | 1.7 | 0.95 | 0.108 | 0.045 | 13889 | 13830 |
| 38.1 | 65.088 | 18.034 | 18.288 | 13.97 | 2.3 | 1.3 | LM29749 | LM29710 | 45000 | 60000 | 5400 | 7500 | 4.2 | 0.33 | 1.8 | 0.99 | 0.155 | 0.08 | LM29749 | LM29710 |
| 38.1 | 65.088 | 18.034 | 18.288 | 13.97 | 2.36 | 1.17 | H-LM29749 | H-LM29710 | 42900 | 56500 | 4900 | 6800 | 4.3 | 0.33 | 1.8 | 0.99 | 0.158 | 0.08 | H-LM29749 | H-LM29710 |
| 38.1 | 65.088 | 18.034 | 18.288 | 13.97 | 999 | 1.17 | H-LM29748 | H-LM29710 | 42900 | 56500 | 4900 | 6800 | 4.3 | 0.33 | 1.8 | 0.99 | 0.154 | 0.08 | H-LM29748 | H-LM29710 |
| 38.1 | 69.012 | 19.05 | 19.05 | 15.083 | 3.5 | 2.3 | 13685 | 13621 | 47000 | 60000 | 5300 | 7100 | 3 | 0.4 | 1.5 | 0.82 | 0.185 | 0.103 | 13685 | 13621 |
| 38.1 | 76.2 | 23.812 | 25.654 | 19.05 | 3.5 | 0.8 | 2788 | 2729 | 68000 | 81000 | 5000 | 6700 | 8 | 0.3 | 2 | 1.1 | 0.31 | 0.187 | 2788 | 2729 |
| 38.1 | 76.2 | 23.812 | 25.654 | 19.05 | 3.5 | 3.3 | 2788 | 2720 | 68000 | 81000 | 5000 | 6700 | 8 | 0.3 | 2 | 1.1 | 0.31 | 0.185 | 2788 | 2720 |
| 38.1 | 76.2 | 23.813 | 25.654 | 19.05 | 3.6 | 3.2 | H-2788R | H-2720 | 74100 | 92200 | 4500 | 6300 | 8.1 | 0.3 | 1.98 | 1.09 | 0.305 | 0.19 | H-2788R | H-2720 |
| 38.1 | 79.375 | 23.813 | 25.4 | 19.05 | 0.8 | 0.8 | H-26878R. | H-26822. | 81100 | 105000 | 4200 | 5900 | 7.5 | 0.32 | 1.88 | 1.04 | 0.397 | 0.185 | H-26878R. | H-26822. |
| 38.1 | 79.375 | 29.37 | 29.771 | 23.813 | 3.6 | 3.2 | 3490 | 3420 | 87400 | 105000 | 4300 | 6100 | 8.6 | 0.37 | 1.64 | 0.9 | 0.415 | 0.262 | 3490 | 3420 |
| 38.1 | 80.167 | 29.37 | 30.391 | 23.812 | 3.5 | 3.3 | 3381 | 3320 | 86000 | 106000 | 4800 | 6400 | 18.5 | 0.27 | 2.19 | 1.2 | 0.445 | 0.215 | 3381 | 3320 |
| 38.1 | 88.501 | 26.988 | 29.083 | 22.225 | 3.6 | 1.6 | 418 | 414 | 98100 | 112000 | 4000 | 5700 | 10.1 | 0.26 | 2.28 | 1.25 | 0.522 | 0.329 | 418 | 414 |
| 39.688 | 73.571 | 23.812 | 25.654 | 19.05 | 3.5 | 0.8 | 2789 | 2735X | 68000 | 81000 | 5000 | 6700 | 8 | 0.3 | 2 | 1.1 | 0.29 | 0.17 | 2789 | 2735X |
| 39.688 | 73.571 | 25.654 | 22.098 | 21.336 | 0.8 | 2.3 | M257147 | M257111 | 63000 | 81000 | 5000 | 6700 | 5.9 | 0.33 | 1.8 | 0.99 | 0.255 | 0.183 | M257147 | M257111 |
| 39.688 | 76.2 | 23.813 | 25.654 | 19.05 | 3.6 | 3.2 | H-2789R | H-2720 | 74100 | 92200 | 4500 | 6300 | 8.1 | 0.3 | 1.98 | 1.09 | 0.285 | 0.19 | H-2789R | H-2720 |
| 40.987 | 67.975 | 17.5 | 18 | 13.5 | 999 | 1.6 | H-LM300849 | H-LM300811 | 44000 | 59500 | 4600 | 6500 | 3.6 | 0.35 | 1.72 | 0.95 | 0.157 | 0.082 | H-LM300849 | H-LM300811 |
| 41.275 | 73.571 | 16.667 | 17.462 | 12.7 | 3.5 | 1.5 | 18590 | 18520 | 46500 | 57000 | 4800 | 6700 | 2.8 | 0.35 | 1.7 | 0.94 | 0.208 | 0.084 | 18590 | 18520 |
| 41.275 | 73.571 | 16.667 | 17.463 | 12.7 | 3.6 | 1.6 | H-18590 | H-18520 | 45900 | 55800 | 4300 | 6100 | 2.2 | 0.35 | 1.71 | 0.94 | 0.198 | 0.087 | H-18590 | H-18520 |
| 41.275 | 73.431 | 19.558 | 19.812 | 14.732 | 3.5 | 0.8 | LM501349 | LM501310 | 55500 | 69000 | 4900 | 6700 | 3.4 | 0.4 | 1.5 | 0.83 | 0.22 | 0.108 | LM501349 | LM501310 |
| 41.275 | 73.431 | 19.558 | 19.812 | 14.732 | 3.6 | 0.8 | H-LM501349 | H-LM501310 | 57800 | 73000 | 4400 | 6100 | 3.5 | 0.4 | 1.5 | 0.83 | 0.226 | 0.109 | H-LM501349 | H-LM501310 |
| 41.275 | 73.431 | 21.43 | 19.812 | 16.604 | 3.6 | 0.8 | H-LM501349 | H-LM501314 | 57800 | 73000 | 4400 | 6100 | 3.5 | 0.4 | 1.5 | 0.83 | 0.226 | 0.129 | H-LM501349 | H-LM501314 |
| 41.275 | 76.2 | 18.009 | 17.384 | 14.288 | 1.6 | 1.6 | 11162R | 11300 | 51600 | 63300 | 4300 | 6000 | 0.5 | 0.49 | 1.23 | 0.68 | 0.219 | 0.13 | 11162R | 11300 |
| 41.275 | 76.2 | 22.225 | 23.02 | 17.462 | 3.5 | 0.8 | 24780 | 24720 | 63500 | 78500 | 4800 | 6600 | 1.6 | 0.39 | 1.5 | 0.84 | 0.275 | 0.189 | 24780 | 24720 |
| 41.275 | 76.2 | 25.4 | 23.02 | 20.638 | 3.6 | 2.4 | 24780R | 24721 | 66300 | 83300 | 4000 | 5600 | 4.8 | 0.39 | 1.53 | 0.84 | 0.271 | 0.191 | 24780R | 24721 |
| 41.275 | 79.375 | 23.812 | 25.4 | 19.05 | 3.5 | 0.8 | 26882 | 26822 | 75000 | 94500 | 4700 | 6300 | 7.5 | 0.32 | 1.9 | 1 | 0.34 | 0.185 | 26882 | 26822 |
| 41.275 | 80.167 | 25.4 | 25.4 | 20.638 | 3.6 | 3.2 | H-26882R. | H-26820. | 81100 | 105000 | 4200 | 5900 | 7.5 | 0.32 | 1.88 | 1.04 | 0.35 | 0.223 | H-26882R. | H-26820. |
| 41.275 | 80.167 | 29.37 | 30.391 | 23.813 | 0.8 | 3.2 | 3384 | 3320 | 91000 | 106000 | 4200 | 5900 | 10.7 | 0.27 | 2.2 | 1.21 | 0.416 | 0.22 | 3384 | 3320 |
| 41.275 | 87.313 | 30.163 | 30.886 | 23.813 | 1.6 | 3.2 | 3585R | 3525 | 95800 | 120000 | 3900 | 5400 | 9.7 | 0.31 | 1.96 | 1.08 | 0.527 | 0.308 | 3585R | 3525 |
| 41.275 | 90.488 | 39.688 | 40.386 | 33.338 | 3.6 | 3.2 | 4388 | 4335 | 132000 | 169000 | 3800 | 5300 | 14.1 | 0.28 | 2.11 | 1.16 | 0.767 | 0.463 | 4388 | 4335 |
| 42.863 | 87.313 | 30.163 | 30.886 | 23.813 | 3.6 | 3.2 | 3579R | 3525 | 95800 | 120000 | 3900 | 5400 | 9.7 | 0.31 | 1.96 | 1.08 | 0.499 | 0.308 | 3579R | 3525 |
| 42.875 | 80 | 21 | 22.403 | 17.826 | 3.5 | 1.3 | 342S | 332 | 69000 | 76000 | 4500 | 6300 | 6.2 | 0.27 | 2.2 | 1.2 | 0.295 | 0.145 | 342S | 332 |
| 42.875 | 82.931 | 23.812 | 25.4 | 19.05 | 3.5 | 0.8 | 25577 | 25520 | 78500 | 98000 | 4500 | 6000 | 6.2 | 0.33 | 1.8 | 0.99 | 0.38 | 0.2 | 25577 | 25520 |
| 42.875 | 82.931 | 26.988 | 25.4 | 22.225 | 3.5 | 2.3 | 25577 | 25523 | 78500 | 98000 | 4500 | 6000 | 9.4 | 0.33 | 1.8 | 0.99 | 0.38 | 0.245 | 25577 | 25523 |
| 42.875 | 82.931 | 26.988 | 25.4 | 22.225 | 3.6 | 2.4 | H-25577 | H-25523 | 77300 | 100000 | 4000 | 5500 | 6.3 | 0.33 | 1.79 | 0.99 | 0.379 | 0.251 | H-25577 | H-25523 |
| 42.875 | 83.058 | 23.812 | 25.4 | 19.05 | 3.5 | 3.3 | 25577 | 25521 | 78500 | 98000 | 4500 | 6000 | 6.2 | 0.33 | 1.8 | 0.99 | 0.38 | 0.199 | 25577 | 25521 |
| 44.45 | 82.931 | 23.812 | 25.4 | 19.05 | 3.5 | 0.8 | 25580 | 25520 | 78500 | 98000 | 4500 | 6000 | 6.2 | 0.33 | 1.8 | 0.99 | 0.355 | 0.2 | 25580 | 25520 |
| 44.45 | 82.931 | 23.813 | 25.4 | 19.05 | 3.6 | 0.8 | H-25580 | H-25520 | 77300 | 100000 | 4000 | 5500 | 6.3 | 0.33 | 1.79 | 0.99 | 0.361 | 0.202 | H-25580 | H-25520 |
| 44.45 | 82.931 | 26.988 | 25.4 | 22.225 | 3.5 | 2.3 | 25580 | 25523 | 78500 | 98000 | 4500 | 6000 | 9.4 | 0.33 | 1.8 | 0.99 | 0.355 | 0.245 | 25580 | 25523 |
| 44.45 | 83.058 | 23.812 | 25.4 | 19.05 | 3.5 | 3.3 | 25580 | 25521 | 78500 | 98000 | 4500 | 6000 | 6.2 | 0.33 | 1.8 | 0.99 | 0.355 | 0.199 | 25580 | 25521 |
| 44.45 | 87.312 | 30.162 | 30.886 | 23.812 | 3.5 | 3.3 | 3578 | 3525 | 90000 | 110000 | 4300 | 6000 | 10.2 | 0.31 | 2 | 1.1 | 0.476 | 0.305 | 3578 | 3525 |
| 44.45 | 87.313 | 30.163 | 30.886 | 23.813 | 3.6 | 3.2 | 3578R | 3525 | 95800 | 120000 | 3900 | 5400 | 9.7 | 0.31 | 1.96 | 1.08 | 0.473 | 0.308 | 3578R | 3525 |
| 44.45 | 88.9 | 30.163 | 29.37 | 23.02 | 3.6 | 3.3 | HM85719 | HM85710 | 99600 | 125000 | 3800 | 5400 | 4.1 | 0.55 | 1.1 | 0.6 | 0.517 | 0.326 | HM85719 | HM85710 |
| 44.45 | 90.119 | 23 | 21.926 | 21.808 | 3.6 | 2.4 | 355X | 352 | 71800 | 81700 | 3800 | 5400 | 5.1 | 0.31 | 1.96 | 1.08 | 0.336 | 0.325 | 355X | 352 |
| 44.45 | 92.075 | 30.163 | 29.37 | 23.02 | 3.6 | 3.2 | HM85719 | HM85712 | 99600 | 125000 | 3800 | 5400 | 4.1 | 0.55 | 1.1 | 0.6 | 0.517 | 0.407 | HM85719 | HM85712 |
| 44.45 | 93.264 | 30.163 | 30.302 | 23.813 | 3.6 | 3.2 | 3782 | 3720 | 103000 | 137000 | 3500 | 4900 | 8 | 0.34 | 1.77 | 0.97 | 0.651 | 0.296 | 3782 | 3720 |
| 44.45 | 95.25 | 30.958 | 28.575 | 22.225 | 3.6 | 0.8 | HM903249 | HM903210 | 99700 | 120000 | 3700 | 5100 | 0.1 | 0.74 | 0.81 | 0.45 | 0.609 | 0.389 | HM903249 | HM903210 |
| 44.45 | 95.25 | 30.958 | 28.301 | 20.638 | 1.2 | 0.8 | 53176 | 53375 | 88700 | 98400 | 3700 | 5200 | 1 | 0.74 | 0.81 | 0.45 | 0.557 | 0.367 | 53176 | 53375 |
| 44.45 | 112.713 | 30.163 | 26.909 | 20.638 | 3.5 | 3.3 | 55175 | 55443 | 92000 | 108000 | 3100 | 4300 | -7.1 | 0.88 | 0.68 | 0.37 | 0.82 | 0.5 | 55175 | 55443 |
| 44.45 | 114.3 | 44.45 | 44.45 | 34.925 | 3.6 | 3.2 | 65385 | 65320 | 189000 | 230000 | 3100 | 4400 | 12.5 | 0.43 | 1.39 | 0.77 | 1.466 | 0.884 | 65385 | 65320 |
| 44.983 | 93.264 | 30.163 | 30.302 | 23.813 | 3.6 | 3.2 | 3776 | 3720 | 103000 | 137000 | 3500 | 4900 | 8 | 0.34 | 1.77 | 0.97 | 0.642 | 0.296 | 3776 | 3720 |
| 45.242 | 73.431 | 19.558 | 19.812 | 15.748 | 3.5 | 0.8 | LM157149 | LM157110 | 55500 | 78000 | 4700 | 6400 | 4.7 | 0.31 | 2 | 1.1 | 0.208 | 0.1 | LM157149 | LM157110 |
| 45.242 | 73.431 | 19.558 | 19.812 | 15.748 | 3.6 | 0.8 | H-LM157149 | H-LM157110 | 55600 | 78100 | 4200 | 5900 | 4.9 | 0.31 | 1.97 | 1.08 | 0.207 | 0.101 | H-LM157149 | H-LM157110 |
| 45.242 | 77.788 | 19.842 | 19.842 | 15.08 | 3.6 | 0.8 | LM603049 | LM6571 | 57100 | 73500 | 4100 | 5700 | 2.3 | 0.43 | 1.41 | 0.77 | 0.242 | 0.122 | LM603049 | LM6571 |
| 45.242 | 77.788 | 21.43 | 19.842 | 16.667 | 3.6 | 0.8 | LM603049 | LM603012 | 57100 | 73500 | 4100 | 5700 | 2.3 | 0.43 | 1.41 | 0.77 | 0.241 | 0.141 | LM603049 | LM603012 |
| 45.618 | 82.931 | 23.812 | 25.4 | 19.05 | 3.5 | 0.8 | 25590 | 25520 | 78500 | 98000 | 4500 | 6000 | 6.2 | 0.33 | 1.8 | 0.99 | 0.34 | 0.2 | 25590 | 25520 |
| 45.618 | 82.931 | 23.813 | 25.4 | 19.05 | 3.6 | 0.8 | H-25590 | H-25520 | 77300 | 100000 | 4000 | 5500 | 6.3 | 0.33 | 1.79 | 0.99 | 0.345 | 0.202 | H-25590 | H-25520 |
| 45.618 | 82.931 | 26.988 | 25.4 | 22.225 | 3.5 | 2.3 | 25590 | 25523 | 78500 | 98000 | 4500 | 6000 | 6.2 | 0.33 | 1.8 | 0.99 | 0.34 | 0.245 | 25590 | 25523 |
| 45.618 | 82.931 | 26.988 | 25.4 | 22.225 | 3.6 | 2.4 | H-25590 | H-25523 | 77300 | 100000 | 4000 | 5500 | 6.3 | 0.33 | 1.79 | 0.99 | 0.341 | 0.251 | H-25590 | H-25523 |
| 46.038 | 79.375 | 17.463 | 17.463 | 13.495 | 2.8 | 1.6 | H-25590 | 18620 | 47100 | 59100 | 4000 | 5600 | 1.5 | 0.37 | 1.6 | 0.88 | 0.206 | 0.126 | H-25590 | 18620 |
| 46.038 | 85 | 20.638 | 21.692 | 17.462 | 2.3 | 1.3 | 359S | 354A | 69000 | 78000 | 4300 | 6000 | 4.9 | 0.31 | 2 | 1.1 | 0.33 | 0.16 | 359S | 354A |
| 47.625 | 93.264 | 30.163 | 30.302 | 23.813 | 3.6 | 3.2 | 3779 | 3720 | 103000 | 137000 | 3500 | 4900 | 8 | 0.34 | 1.77 | 0.97 | 0.596 | 0.296 | 3779 | 3720 |
| 47.625 | 101.6 | 34.925 | 36.068 | 26.988 | 3.5 | 3.3 | 528 | 522 | 139000 | 171000 | 3700 | 5000 | 12.7 | 0.29 | 2.1 | 1.2 | 0.89 | 0.41 | 528 | 522 |
| 47.625 | 107.95 | 36.513 | 36.957 | 28.575 | 3.6 | 3.2 | 536 | 532X | 138000 | 172000 | 3200 | 4400 | 12.3 | 0.3 | 2.02 | 1.11 | 1.03 | 0.583 | 536 | 532X |
| 47.625 | 111.125 | 30.162 | 26.909 | 20.638 | 3.5 | 3.3 | 55187 | 55437 | 92000 | 108000 | 3100 | 4300 | -7.1 | 0.88 | 0.68 | 0.37 | 0.825 | 0.51 | 55187 | 55437 |
| 49.212 | 93.264 | 30.162 | 30.302 | 23.812 | 3.5 | 0.8 | 3781 | 3730 | 157100 | 134000 | 3800 | 5300 | 8.4 | 0.34 | 1.8 | 0.97 | 0.65 | 0.295 | 3781 | 3730 |
| 49.212 | 103.188 | 43.658 | 44.475 | 36.512 | 3.5 | 3.3 | 5395 | 5335 | 177000 | 245000 | 3700 | 5000 | 27.3 | 0.3 | 2 | 1.11 | 1.13 | 0.64 | 5395 | 5335 |
| 49.212 | 114.3 | 44.45 | 44.45 | 36.068 | 3.5 | 3.3 | HH506348 | HH5 0571 0 | 199000 | 243000 | 3500 | 4700 | 31.2 | 0.4 | 1.5 | 0.82 | 1.7 | 0.85 | HH506348 | HH5 0571 0 |
| 50 | 82 | 21.5 | 21.5 | 17 | 3 | 0.5 | H-JLM104948 | H-JLM104910 | 71700 | 97900 | 3800 | 5300 | 5.3 | 0.31 | 1.97 | 1.08 | 0.305 | 0.129 | H-JLM104948 | H-JLM104910 |
| 50.8 | 82 | 21.976 | 22.225 | 17 | 3.6 | 0.5 | H-LM104949 | H-JLM104910 | 61200 | 84300 | 3700 | 5200 | 5.2 | 0.31 | 1.97 | 1.08 | 0.288 | 0.129 | H-LM104949 | H-JLM104910 |
| 50.8 | 82.55 | 21.59 | 22.225 | 16.51 | 3.5 | 1.3 | LM104949 | LM104911 | 71000 | 96000 | 4300 | 5700 | 3.9 | 0.31 | 2 | 1.1 | 0.285 | 0.15 | LM104949 | LM104911 |
| 50.8 | 82.55 | 21.59 | 22.225 | 16.51 | 3.6 | 1.2 | H-LM104949 | H-LM104911 | 61200 | 84300 | 3700 | 5200 | 5.2 | 0.31 | 1.97 | 1.08 | 0.287 | 0.133 | H-LM104949 | H-LM104911 |
| 50.8 | 82.931 | 21.59 | 22.225 | 16.51 | 3.6 | 1.2 | H-LM104949 | H-LM104912 | 61200 | 84300 | 3700 | 5200 | 5.2 | 0.31 | 1.97 | 1.08 | 0.287 | 0.14 | H-LM104949 | H-LM104912 |
| 50.8 | 85 | 17.462 | 17.462 | 13.495 | 3.5 | 1.5 | 18790 | 18720 | 44000 | 58500 | 4000 | 5600 | 0.7 | 0.41 | 1.5 | 0.81 | 0.235 | 0.134 | 18790 | 18720 |
| 50.8 | 88.9 | 17.462 | 17.462 | 13.495 | 3.5 | 1.3 | 18790 | 18724 | 44000 | 58500 | 4000 | 5600 | 0.7 | 0.41 | 1.5 | 0.81 | 0.235 | 0.134 | 18790 | 18724 |
| 50.8 | 88.9 | 20.638 | 22.225 | 16.513 | 1.5 | 1.3 | 368 | 362A | 74500 | 89000 | 4000 | 5600 | 4.2 | 0.32 | 1.9 | 1 | 0.345 | 0.165 | 368 | 362A |
| 50.8 | 88.9 | 20.638 | 22.225 | 16.513 | 3.6 | 1.3 | 368A | 362A | 74300 | 87300 | 3700 | 5200 | 4.6 | 0.32 | 1.88 | 1.03 | 0.329 | 0.166 | 368A | 362A |
| 50.8 | 92.075 | 24.608 | 25.4 | 19.845 | 3.6 | 0.8 | 28580R.L | 28521.L | 84800 | 119000 | 3500 | 4900 | 4.7 | 0.38 | 1.59 | 0.88 | 0.455 | 0.247 | 28580R.L | 28521.L |
| 50.8 | 93.264 | 30.162 | 30.302 | 23.812 | 3.5 | 0.8 | 3780 | 3730 | 157100 | 134000 | 3800 | 5300 | 8.2 | 0.34 | 1.8 | 0.97 | 0.558 | 0.295 | 3780 | 3730 |
| 50.8 | 93.264 | 30.163 | 30.302 | 23.813 | 3.6 | 3.2 | 3780 | 3720 | 103000 | 137000 | 3500 | 4900 | 8 | 0.34 | 1.77 | 0.97 | 0.539 | 0.296 | 3780 | 3720 |
| 50.8 | 101.6 | 31.75 | 31.75 | 25.4 | 3.5 | 3.3 | 49585 | 49520 | 107000 | 128000 | 3600 | 5000 | 7.1 | 0.4 | 1.5 | 0.82 | 0.75 | 0.385 | 49585 | 49520 |
| 50.8 | 101.6 | 34.925 | 36.068 | 26.988 | 0.8 | 3.3 | 529 | 522 | 139000 | 169000 | 3700 | 5000 | 12.7 | 0.29 | 2.1 | 1.2 | 0.83 | 0.41 | 529 | 522 |
| 50.8 | 104.775 | 30.162 | 30.958 | 23.812 | 6.4 | 3.3 | 45284 | 45220 | 131000 | 171000 | 3500 | 4700 | 7.9 | 0.33 | 1.8 | 0.99 | 0.825 | 0.41 | 45284 | 45220 |
| 50.8 | 104.775 | 36.512 | 36.512 | 28.575 | 3.5 | 3.3 | HM807046 | HM85711 | 147000 | 257100 | 3500 | 4800 | 7.4 | 0.49 | 1.2 | 0.68 | 0.97 | 0.5 | HM807046 | HM85711 |
| 50.8 | 107.95 | 36.512 | 36.957 | 28.575 | 3.5 | 3.3 | 537 | 532X | 139000 | 173000 | 3600 | 4800 | 11.7 | 0.3 | 2.02 | 1.1 | 0.97 | 0.57 | 537 | 532X |
| 50.8 | 111.125 | 30.162 | 26.909 | 20.638 | 3.5 | 3.3 | 55200 | 55437 | 92000 | 108000 | 3100 | 4300 | -7.1 | 0.88 | 0.68 | 0.37 | 0.77 | 0.51 | 55200 | 55437 |
| 50.8 | 122.238 | 38.1 | 36.678 | 30.162 | 2.3 | 3.3 | 555 | 553X | 149000 | 197000 | 3000 | 4100 | 9.4 | 0.35 | 1.73 | 0.95 | 1.5 | 0.69 | 555 | 553X |
| 50.8 | 123.825 | 36.512 | 32.791 | 25.4 | 3.5 | 3.3 | 72200 | 72487 | 135000 | 148000 | 2900 | 4100 | -1.3 | 0.74 | 0.81 | 0.45 | 1.24 | 0.785 | 72200 | 72487 |
| 50.8 | 127 | 44.45 | 44.45 | 34.925 | 3.5 | 3.3 | 65200 | 65500 | 198000 | 258000 | 3100 | 4300 | 9.4 | 0.49 | 1.2 | 0.68 | 1.87 | 1.03 | 65200 | 65500 |
| 52.388 | 92.075 | 24.608 | 25.4 | 19.845 | 3.6 | 0.8 | 28584R. | 28521 | 84800 | 119000 | 3500 | 4900 | 4.7 | 0.38 | 1.59 | 0.87 | 0.43 | 0.247 | 28584R. | 28521 |
| 53.975 | 96.838 | 21.001 | 21.946 | 15.875 | 1.6 | 0.8 | 389AS | 382A | 80400 | 157100 | 3300 | 4600 | 3.6 | 0.35 | 1.69 | 0.93 | 0.475 | 0.179 | 389AS | 382A |
| 53.975 | 98.425 | 21 | 21.946 | 17.826 | 0.8 | 0.8 | 389A | 382 | 74500 | 91500 | 3600 | 5000 | 3 | 0.35 | 1.7 | 0.93 | 0.38 | 0.225 | 389A | 382 |
| 53.975 | 104.775 | 30.162 | 29.317 | 24.605 | 3.5 | 3.3 | 456 | 453X | 116000 | 150000 | 3400 | 4800 | 7 | 0.34 | 1.8 | 0.98 | 0.74 | 0.375 | 456 | 453X |
| 53.975 | 104.775 | 36.512 | 36.512 | 28.575 | 3.5 | 3.3 | HM807049 | HM85711 | 147000 | 257100 | 3500 | 4800 | 7.4 | 0.49 | 1.2 | 0.68 | 0.89 | 0.5 | HM807049 | HM85711 |
| 53.975 | 112.712 | 30.162 | 30.163 | 23.812 | 3.5 | 3.3 | 39578 | 39520 | 126000 | 168000 | 3100 | 4300 | 6.6 | 0.34 | 1.8 | 0.97 | 0.9 | 0.36 | 39578 | 39520 |
| 53.975 | 120.65 | 41.275 | 41.275 | 31.75 | 3.5 | 3.3 | 621 | 612 | 163000 | 198000 | 3300 | 4400 | 26.9 | 0.31 | 1.91 | 1.05 | 1.49 | 0.735 | 621 | 612 |
| 53.975 | 123.825 | 38.1 | 36.678 | 30.162 | 3.5 | 3.3 | 557S | 552A | 149000 | 197000 | 3000 | 4100 | 9.2 | 0.35 | 1.73 | 0.95 | 1.5 | 0.75 | 557S | 552A |
| 53.975 | 127 | 44.45 | 44.45 | 34.925 | 3.5 | 3.3 | 65212 | 65500 | 198000 | 258000 | 3100 | 4300 | 9.4 | 0.49 | 1.2 | 0.68 | 1.8 | 1.03 | 65212 | 65500 |
| 53.975 | 127 | 50.8 | 52.388 | 41.275 | 3.5 | 3.3 | 6280 | 6220 | 241000 | 300000 | 3100 | 4300 | 19.5 | 0.3 | 2 | 1.1 | 2.06 | 1.25 | 6280 | 6220 |
| 55 | 90 | 23 | 23 | 18.5 | 1.5 | 0.5 | JLM506849E | JLM506810E | 81400 | 115000 | 3500 | 4900 | 2.9 | 0.4 | 1.49 | 0.82 | 0.377 | 0.184 | JLM506849E | JLM506810E |
| 55.562 | 122.238 | 43.658 | 43.764 | 36.512 | 1.3 | 3.3 | 5566 | 5535 | 178000 | 263000 | 3000 | 4000 | 12.1 | 0.36 | 1.7 | 0.92 | 1.76 | 0.811 | 5566 | 5535 |
| 55.563 | 97.63 | 24.608 | 24.608 | 19.446 | 3.6 | 0.8 | 28680 | 28622 | 89600 | 131000 | 3300 | 4600 | 3.4 | 0.4 | 1.49 | 0.82 | 0.49 | 0.27 | 28680 | 28622 |
| 57.15 | 96.838 | 21.001 | 21.946 | 15.875 | 3.6 | 0.8 | 387A | 382A | 80400 | 157100 | 4200 | 5900 | 3.6 | 0.35 | 1.69 | 0.93 | 0.425 | 0.179 | 387A | 382A |
| 57.15 | 97.63 | 24.608 | 24.608 | 19.446 | 3.6 | 0.8 | 28682 | 28622 | 89600 | 131000 | 3300 | 4600 | 3.4 | 0.4 | 1.49 | 0.82 | 0.463 | 0.27 | 28682 | 28622 |
| 57.15 | 104.775 | 30.163 | 29.317 | 24.605 | 2.4 | 3.2 | 462 | 453X | 109000 | 144000 | 3100 | 4300 | 6.6 | 0.34 | 1.79 | 0.98 | 0.678 | 0.382 | 462 | 453X |
| 57.15 | 104.775 | 30.162 | 30.958 | 23.812 | 2.3 | 0.8 | 45290 | 45221 | 131000 | 171000 | 3500 | 4700 | 8 | 0.33 | 1.8 | 0.99 | 0.765 | 0.35 | 45290 | 45221 |
| 57.15 | 104.775 | 30.163 | 29.317 | 24.605 | 3.6 | 3.2 | 469 | 453X | 109000 | 144000 | 3100 | 4300 | 6.6 | 0.34 | 1.79 | 0.98 | 0.678 | 0.382 | 469 | 453X |
| 57.15 | 110 | 21.999 | 21.996 | 18.824 | 2.4 | 1.2 | 390 | 394A | 86400 | 116000 | 2800 | 4000 | 0.7 | 0.4 | 1.49 | 0.82 | 0.677 | 0.262 | 390 | 394A |
| 57.15 | 112.712 | 30.162 | 30.048 | 23.812 | 3.5 | 3.3 | 3979 | 3920 | 118000 | 172000 | 3200 | 4300 | 4.6 | 0.4 | 1.5 | 0.82 | 0.94 | 0.46 | 3979 | 3920 |
| 57.15 | 112.713 | 30.163 | 30.163 | 23.813 | 7.9 | 3.2 | 39581 | 39520 | 147000 | 207000 | 2800 | 3900 | 6.9 | 0.34 | 1.77 | 0.97 | 1.03 | 0.363 | 39581 | 39520 |
| 57.15 | 117.475 | 30.162 | 30.162 | 23.812 | 3.5 | 3.3 | 33225 | 33462 | 112000 | 168000 | 3000 | 4000 | 2.4 | 0.44 | 1.4 | 0.76 | 1.05 | 0.44 | 33225 | 33462 |
| 57.15 | 117.475 | 33.338 | 31.75 | 23.812 | 3.5 | 3.3 | 66225 | 66462 | 118000 | 132000 | 3100 | 4100 | -0.1 | 0.63 | 0.95 | 0.52 | 0.97 | 0.54 | 66225 | 66462 |
| 57.15 | 122.238 | 38.1 | 36.678 | 30.162 | 3.5 | 3.3 | 555S | 553X | 149000 | 197000 | 3000 | 4100 | 9.4 | 0.35 | 1.7 | 0.95 | 1.45 | 0.69 | 555S | 553X |
| 57.15 | 127 | 44.45 | 44.45 | 34.925 | 3.5 | 3.3 | 65225 | 65500 | 198000 | 258000 | 3100 | 4200 | 9.3 | 0.49 | 1.2 | 0.68 | 1.75 | 1.03 | 65225 | 65500 |
| 57.15 | 136.525 | 41.275 | 41.275 | 31.75 | 3.5 | 3.3 | 635 | 632 | 183000 | 246000 | 2800 | 3800 | 11.2 | 0.36 | 1.7 | 0.91 | 2.02 | 1.01 | 635 | 632 |
| 57.15 | 149.225 | 53.975 | 54.229 | 44.45 | 3.5 | 3.3 | 6455 | 6420 | 284000 | 410000 | 2500 | 3400 | 15.1 | 0.36 | 1.7 | 0.91 | 3.45 | 1.65 | 6455 | 6420 |
| 58.738 | 112.712 | 30.162 | 30.048 | 23.812 | 3.5 | 3.3 | 3981 | 3920 | 118000 | 172000 | 3200 | 4300 | 4.5 | 0.4 | 1.5 | 0.82 | 0.89 | 0.46 | 3981 | 3920 |
| 58.738 | 127 | 44.45 | 44.45 | 34.925 | 3.5 | 3.3 | 65231 | 65500 | 198000 | 258000 | 3100 | 4200 | 9.3 | 0.49 | 1.2 | 0.68 | 1.71 | 1.03 | 65231 | 65500 |
| 59.987 | 134.983 | 33.449 | 30.925 | 21.948 | 3.6 | 3.6 | HM911244R | HM911216 | 153000 | 181000 | 2600 | 3700 | -7.1 | 0.82 | 0.73 | 0.4 | 1.35 | 0.823 | HM911244R | HM911216 |
| 60.325 | 100 | 25.4 | 25.4 | 19.845 | 3.6 | 3.2 | 28985 | 28921 | 91400 | 137000 | 3100 | 4300 | 2.6 | 0.43 | 1.41 | 0.78 | 0.527 | 0.237 | 28985 | 28921 |
| 60.325 | 101.6 | 25.4 | 25.4 | 19.845 | 3.6 | 3.2 | 28985 | 28920 | 91400 | 137000 | 3100 | 4300 | 2.6 | 0.43 | 1.41 | 0.78 | 0.526 | 0.276 | 28985 | 28920 |
| 60.325 | 112.713 | 30.162 | 30.048 | 23.812 | 3.5 | 0.8 | 3980 | 3925 | 118000 | 172000 | 3200 | 4300 | 4.5 | 0.4 | 1.5 | 0.82 | 0.9 | 0.45 | 3980 | 3925 |
| 60.325 | 122.238 | 38.1 | 38.354 | 29.718 | 8 | 1.5 | HM212044 | HM212571 | 187000 | 243000 | 3000 | 4100 | 10.9 | 0.34 | 1.8 | 0.98 | 1.45 | 0.6 | HM212044 | HM212571 |
NO 6. Our Bearing Factory:
NO 8. Our Bearing Warehouse:
NO 9. Our Bearing Packaging Box:
contact-info.html
Why Choose Us:
l SFNB bearing company has 14 years manufacture experience and is one of the biggest adjustment center in north of China.
l We have large stock of original brand and our own brand bearing.
l Sample is available.
l We can accept OEM service.
l SFNB Bearing Co., Ltd. Was founded in March 2008. We were principally engaged in the research, development and manufacture of bearings in the early stage. Now we are mainly engaged in the sales of internationally-famous brand bearings. Our products are sold in Britain, America, Japan, Italy and Southeast Asia, well appreciated by their purchasers. /* March 10, 2571 17:59:20 */!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 and Medium-Sized (60-115mm) |
| Material: | Bearing Steel |
| Spherical: | Non-Aligning Bearings |
| Load Direction: | Radial Bearing |
| 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.
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 2024-01-11
China Best Sales Single/Double Row Zz/2RS Deep Groove Ball Bearings Radial Spherical Insert Ball Bearing SA Sb Pillow Block UC Bearing Linear Bushing Tapered Roller Bearings bearing distributors
Product Description
I have all the models you need, these are just some of them, please contact us now
1.FREE SAMPLES:
contact us by email or trade manager, we will send the free sampls according to your request.
2. World Class Bearing:We provide our customers with all type of indigenous bearing with world class quality.
3. OEM or Non Stand Bearings: Any requirement for Non standard bearings is Easily Fulfilled by us due to
its vast knowledge and links in the industry.
4. Genuine products With Excellent Quality: Company has always proved the
100% quality products it provides with genuine intent.
5.After Sales Service and technical Assistance: Company provides after sales service and technical assistance
as per the customers requirement and needs.
6. Quick Delivery: The company provides just-in-time delivery with its streamlined supply chain.
7. Cost Saving: We provide long-life, shock-resistant and high reliability bearings with
excellent quality and better performance. Resulting in increased cost saving.
8.Attending customer queries promptly: We believe that if customer are satisfied
then it proves our worth well. Customers are always given quick support.
/* March 10, 2571 17:59:20 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1
| Contact Angle: | 45° |
|---|---|
| Aligning: | Non-Aligning Bearing |
| Separated: | Unseparated |
| Rows Number: | Multiple |
| Load Direction: | Radial Bearing |
| Material: | Bearing Steel |
| 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 Miniature Ball Bearings Differ from Standard-sized Ones, and Where are They Commonly Used?
Miniature ball bearings, as the name suggests, are smaller in size compared to standard-sized ball bearings. They have distinct characteristics and are designed to meet the unique requirements of applications that demand compactness, precision, and efficient rotation in confined spaces. Here’s how miniature ball bearings differ from standard-sized ones and where they are commonly used:
- Size:
The most noticeable difference is their size. Miniature ball bearings typically have outer diameters ranging from a few millimeters to around 30 millimeters, while standard-sized ball bearings have larger dimensions suitable for heavier loads and higher speeds.
- Load Capacity:
Due to their smaller size, miniature ball bearings have lower load-carrying capacities compared to standard-sized bearings. They are designed for light to moderate loads and are often used in applications where precision and compactness are prioritized over heavy load support.
- Precision:
Miniature ball bearings are known for their high precision and accuracy. They are manufactured to tighter tolerances, making them suitable for applications requiring precise motion control and low levels of vibration.
- Speed:
Miniature ball bearings can achieve higher speeds than standard-sized bearings due to their smaller size and lower mass. This makes them ideal for applications involving high-speed rotation.
- Friction and Efficiency:
Miniature ball bearings generally have lower friction due to their smaller contact area. This contributes to higher efficiency and reduced heat generation in applications that require smooth and efficient motion.
- Applications:
Miniature ball bearings find applications in various industries and sectors:
- Electronics and Consumer Devices:
They are used in small motors, computer disk drives, printers, and miniature fans, where space is limited but precise motion is essential.
- Medical and Dental Equipment:
Miniature bearings are used in medical devices such as surgical instruments, dental handpieces, and diagnostic equipment due to their precision and compactness.
- Robotics and Automation:
Miniature ball bearings are integral to robotic arms, miniature conveyors, and automation systems, enabling precise movement in confined spaces.
- Aerospace and Defense:
They are used in applications like UAVs (drones), aerospace actuators, and satellite components where size and weight constraints are critical.
- Optics and Instrumentation:
Miniature bearings play a role in optical instruments, cameras, and measuring devices, providing smooth rotation and accurate positioning.
Overall, miniature ball bearings are specialized components designed for applications where space, precision, and efficient rotation are paramount. Their compactness and high precision make them crucial in various industries requiring reliable motion control in limited spaces.
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 2024-01-09