Product Description

Bearing No. dxDxB (mm) Weight(kg) Designation
6904 ZZ 20 37 9 0.0360 6904 Z 6904 6904 RS 6904 2RS

Other Options
* Please kindly click the specific bearing no. as follows to get what you want.*

6800 Series – (Same as 61800) 
Bearing No. dxDxB (mm) Weight(kg) Designation
6800 10 19 5 0.0050  6800 Z 6800 ZZ 6800 RS 6800 2RS
6801 12 21 5 0.0060  6801 Z 6801 ZZ 6801 RS 6801 2RS
6802 15 24 5 0.0070  6802 Z 6802 ZZ 6802 RS 6802 2RS
6803 17 26 5 0.0080  6803 Z 6803 ZZ 6803 RS 6803 2RS
6804 20 32 7 0.0190  6804 Z 6804 ZZ 6804 RS 6804 2RS
6805 25 37 7 0.5710  6805 Z 6805 ZZ 6805 RS 6805 2RS
6806 30 42 7 0.0260  6806 Z 6806 ZZ 6806 RS 6806 2RS
6807 35 47 7 0.5710  6807 Z 6807 ZZ 6807 RS 6807 2RS
6808 40 52 7 0.0330  6808 Z 6808 ZZ 6808 RS 6808 2RS
   45 58 7 0.0400  6809 Z 6809 ZZ 6809 RS 6809 2RS
6810 50 65 7 0.0520  6810 Z 6810 ZZ 6810 RS 6810 2RS
6812 60 75 10 0.1100  6812 Z 6812 ZZ 6812 RS 6812 2RS
6813 65 85 10 0.1300  6813 Z 6813 ZZ 6813 RS 6813 2RS
6814 70 90 10 0.1400  6814 Z 6814 ZZ 6814 RS 6814 2RS
6815 75 95 10 0.1500  6815 Z 6815 ZZ 6815 RS 6815 2RS
6900 Series – (Same as 61900) 
Bearing No. dxDxB (mm) Weight(kg) Designation
6900 10 22 6 0.0090  6900 Z 6900 ZZ 6900 RS 6900 2RS
6901 12 24 6 0.0110  6901 Z 6901 ZZ 6901 RS 6901 2RS
6902 15 28 7 0.0160  6902 Z 6902 ZZ 6902 RS 6902 2RS
6903 17 30 7 0.0180  6903 Z 6903 ZZ 6903 RS 6903 2RS
6904 20 37 9 0.0360  6904 Z 6904 ZZ 6904 RS 6904 2RS
6905 25 42 9 0.0420  6905 Z 6905 ZZ 6905 RS 6905 2RS
6906 30 47 9 0.0480  6906 Z 6906 ZZ 6906 RS 6906 2RS
6907 35 55 10 0.0740  6907 Z 6907 ZZ 6907 RS 6907 2RS
6908 40 62 12 0.1100  6908 Z 6908 ZZ 6908 RS 6908 2RS
6909 45 68 12 0.1280  6909 Z 6909 ZZ 6909 RS 6909 2RS
6910 50 72 12 0.1300  6910 Z 6910 ZZ 6910 RS 6910 2RS
6912 60 85 13 0.2000  6912 Z 6912 ZZ 6912 RS 6912 2RS
6913 65 90 13 0.2200  6913 Z 6913 ZZ 6913 RS 6913 2RS
6914 70 110 16 0.350  6914 Z 6914 ZZ 6914 RS 6914 2RS
6915 75 105 16 0.3800  6915 Z 6915 ZZ 6915 RS 6915 2RS


The deep groove ball bearing is the most commonly used rolling bearing. Its structure is simple and easy to use. Mainly used to bear radial load, but when increasing the bearing radial clearance, has a certain angular contact ball bearing performance, can bear the diameter, axial combined load. In the high speed and should not use thrust ball bearing, can also be used to bear pure axial load. With deep groove ball bearing specifications of the same size of other types of bearings, such bearings friction coefficient is small, high limit speed. But not impact resistant, not suitable for heavy load.


No. 1 Pre-greased: Premium Quality greae
No. 2 100% Chrome steel materials
No. 3 Low noise and low vibration at high speed operation
No. 4

Excellent stable performance for radial load applications 


Used in air conditioners, automobiles, industrial motors, agriculture machinery, textile machinery, motorcycles, washing machines, snow throws, lawn mowers, gym machinery, electric power tools, water pumps, etc.

Granville Industrial Company, which was founded in Britain and involved in various auto parts, is 1 of the important manufacturers and suppliers worldwide. We provide a strong full range of products, including:
> Bearings
> Oil seals, Transmission belt
> Chain and Sprocket
> Hub assembly & Wheel bearings
> Coupling, castings
> Linear motion

GIL is the brand of a professional manufacturer and supplier with bearing products.

We strictly follow the core of quality management process control:
> APQP: Product quality advanced plHangZhou
> SPC: Statistical process control
> MSA: Measurement system analysis
> FMEA: Analysis of potential failure modes and consequences
> PPAP: Production part approval procedure

Granville’s advanced service solutions can help you to:
> Improve productivity
> Reduce maintenance costs
> Improve energy efficiency
> Optimize designs
> Reduce time to market
> Reduce total cost of ownership

> Behavior-based, service-oriented, focused on results, and committed to continuous improvement.

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Inside Diameter: 20 mm
Outer Diameter: 37 mm
Width: 9 mm
US$ 0.6/Piece
1 Piece(Min.Order)


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

steel ball bearing

What is the role of cage design and materials in steel ball bearing performance and durability?

The cage design and materials used in steel ball bearings play a crucial role in determining their performance and durability. The cage, also known as the bearing retainer or separator, holds the steel balls in position and maintains the proper spacing between them. It prevents the balls from coming into contact with each other, which could lead to excessive friction, wear, and damage. Here’s an explanation of the role of cage design and materials in steel ball bearing performance and durability:

1. Ball Guidance and Positioning:

The primary function of the cage is to guide and position the steel balls within the bearing. The cage ensures that the balls are evenly distributed around the bearing raceways, maintaining proper alignment and preventing contact between adjacent balls. This guidance and positioning function is crucial for achieving smooth and efficient rolling motion, reducing friction, and optimizing the performance of the bearing.

2. Friction and Heat Reduction:

The cage design and materials can significantly impact the friction and heat generated during bearing operation. An efficient cage design allows for proper ball rotation while minimizing contact and sliding friction between the balls and the cage itself. This reduced friction helps to minimize energy loss and heat generation, improving the overall efficiency and durability of the bearing. Additionally, some cage materials have low thermal conductivity, which can further contribute to heat reduction and prevent overheating of the bearing.

3. Load Distribution:

The cage also plays a role in distributing the applied loads evenly among the steel balls. By maintaining the correct spacing between the balls, the cage helps to distribute the radial and axial loads across a larger contact area. This load distribution capability prevents localized stresses and reduces the risk of premature wear or failure of the bearing. A well-designed cage ensures that the bearing can handle higher loads and provides improved durability under demanding operating conditions.

4. Lubricant Retention:

The cage design can impact the retention and distribution of lubricant within the bearing. Proper lubrication is essential for reducing friction, preventing wear, and protecting against corrosion. The cage should allow for sufficient lubricant flow and retention, ensuring that the balls and raceways are adequately lubricated during operation. An effective cage design promotes the proper distribution and retention of lubricant, enhancing the overall performance and durability of the bearing.

5. Material Compatibility and Durability:

The choice of cage materials is critical for the durability and performance of steel ball bearings. The cage materials must be compatible with the bearing operating conditions, including factors such as speed, temperature, and exposure to corrosive environments. Common cage materials include steel, brass, bronze, synthetic resins, and polymers. Each material has its own advantages and limitations in terms of strength, wear resistance, corrosion resistance, and temperature resistance. The selection of the appropriate cage material ensures the long-term durability and reliable operation of the bearing under specific application requirements.

6. Noise and Vibration Control:

The cage design can also influence the level of noise and vibration generated by the bearing during operation. A well-designed cage can help reduce noise and vibration by maintaining ball stability, minimizing ball-to-cage and ball-to-raceway contact, and dampening oscillations. This noise and vibration control not only improves user comfort but also reduces the risk of damage to other components in the machinery or equipment.

7. Application-Specific Considerations:

In some cases, the cage design and materials may need to be tailored to specific application requirements. For example, in high-speed applications, cages with low mass and low centrifugal forces may be preferred to minimize the risk of cage deformation or imbalance. In environments with exposure to chemicals or extreme temperatures, cage materials with excellent chemical resistance or high-temperature stability may be necessary. Application-specific considerations ensure that the cage design and materials are optimized for the specific operating conditions, further enhancing bearing performance and durability.

In summary, the cage design and materials used in steel ball bearings play a vital role in their performance and durability. The cage provides ball guidance, reduces friction and heat, distributes loads, retains lubricant, and controls noise and vibration. The choice of cage materials must consider factors such as compatibility, durability, and application-specific requirements to ensure optimal bearing performance and long-term reliability.

steel ball bearing

Can steel ball bearings be customized or modified for unique industrial needs?

Yes, steel ball bearings can be customized or modified to meet unique industrial needs. Manufacturers offer various options for customization and modification to ensure that the bearings align with specific requirements. Let’s explore some of the ways steel ball bearings can be customized:

1. Bearing Size and Configuration:

Steel ball bearings can be customized in terms of size, including the outer diameter, inner diameter, and width. Manufacturers can produce bearings in a wide range of sizes to accommodate different shaft and housing dimensions. Additionally, the configuration of the bearing, such as the number and arrangement of balls, can be modified to optimize load capacity, speed, or specific operating conditions.

2. Material Selection:

While steel is the most common material used for ball bearings, there are different types of steel with varying properties. Manufacturers can offer customized steel ball bearings made from specific grades of steel to enhance performance characteristics such as corrosion resistance, high-temperature resistance, or hardness. In some cases, alternative materials such as stainless steel or specialty alloys may be used to meet unique industrial requirements.

3. Seal or Shield Options:

Bearings can be customized with different seal or shield options to provide enhanced protection against contamination, moisture, or chemicals. Manufacturers can offer various sealing configurations, such as rubber seals, metal shields, or labyrinth seals, to suit specific environmental conditions and prevent the ingress of particles or fluids into the bearing. Customized sealing solutions can help prolong bearing life and improve reliability in challenging industrial environments.

4. Lubrication:

The lubrication of steel ball bearings can be customized based on the specific application requirements. Manufacturers can offer a range of lubrication options, including different types of lubricants and greases with varying viscosities, additives, or properties. Customized lubrication solutions ensure optimal performance, reduce friction, and enhance the bearing’s ability to withstand high temperatures, extreme loads, or harsh operating conditions.

5. Cage Design:

The cage, or retainer, holds the balls in position within the bearing and ensures proper ball guidance and spacing. Steel ball bearings can be customized with different cage designs, materials, or configurations. For example, cages can be made from steel, brass, or engineered polymers, each offering specific advantages such as improved heat dissipation, reduced friction, or enhanced durability. Customized cage designs can optimize the bearing’s performance in terms of speed, noise, or resistance to specific operating conditions.

6. Special Coatings or Surface Treatments:

In certain industries or applications, steel ball bearings may benefit from specialized coatings or surface treatments. These coatings can provide additional protection against corrosion, reduce friction, or enhance the bearing’s ability to withstand extreme temperatures or harsh chemicals. Customized coatings or surface treatments can be applied to the bearing’s outer surface, inner raceway, or balls to improve performance and extend the bearing’s lifespan.

7. Specialized Testing and Certification:

For industries with stringent quality or performance requirements, manufacturers can provide customized testing and certification services. This ensures that the steel ball bearings meet specific industry standards, regulations, or performance criteria. Customized testing may involve precision measurement, noise analysis, vibration testing, or endurance testing to verify the bearing’s performance and reliability in unique industrial applications.

By offering customization and modification options, manufacturers can tailor steel ball bearings to meet the unique needs of various industries, applications, and operating conditions. Customized bearings can deliver improved performance, durability, and reliability, ultimately enhancing the overall efficiency and productivity of industrial systems.

steel ball bearing

What are the common applications and industries where steel ball bearings are frequently used?

Steel ball bearings are widely used in various applications across numerous industries. Their versatility and performance make them essential components in many mechanical systems. Here are some common applications and industries where steel ball bearings are frequently utilized:

1. Automotive: Steel ball bearings are extensively employed in the automotive industry. They are found in wheel assemblies, transmissions, engines, steering systems, suspension components, and various other parts. The automotive sector relies on steel ball bearings for their ability to handle high-speed rotation, support heavy loads, and provide durability in challenging environments.

2. Industrial Machinery: Steel ball bearings play a vital role in industrial machinery. They are used in machine tools, conveyor systems, pumps, compressors, fans, gearboxes, and other equipment. Steel ball bearings enable smooth motion, reduce friction, and provide reliable operation in various industrial applications.

3. Electric Motors and Generators: Electric motors and generators require precise rotational motion and efficient energy conversion. Steel ball bearings are commonly used in these devices to support the rotating shafts, reduce friction, and enable smooth operation. They are found in electric motors for appliances, HVAC systems, power tools, and industrial machinery.

4. Aerospace and Aviation: The aerospace and aviation industries demand high-performance bearings that can withstand extreme conditions and operate at high speeds. Steel ball bearings are utilized in aircraft engines, landing gear, control systems, and other critical components. Their ability to handle heavy loads, operate at high speeds, and provide reliability makes them suitable for aerospace applications.

5. Robotics and Automation: Steel ball bearings are essential in robotics and automation systems. They are used in robotic joints, linear motion systems, robotic arms, and precision machinery. Steel ball bearings provide smooth motion, high-speed operation, and precise positioning, enabling robots and automated systems to perform their tasks accurately and efficiently.

6. Medical Equipment: Steel ball bearings are employed in various medical equipment and devices. They are used in surgical instruments, imaging systems, laboratory equipment, dental tools, and prosthetic devices. Steel ball bearings offer reliable performance, low friction, and resistance to corrosion, making them suitable for critical medical applications.

7. Household Appliances: Steel ball bearings are found in numerous household appliances, including washing machines, refrigerators, dishwashers, vacuum cleaners, and blenders. They enable smooth and efficient operation in these appliances, contributing to their reliability and longevity.

8. Other Industries: Steel ball bearings are utilized in many other industries, such as mining, construction, oil and gas, agriculture, food processing, and marine applications. They provide reliable performance, durability, and efficiency in diverse operating conditions.

In summary, steel ball bearings are widely used in automotive, industrial machinery, electric motors, aerospace, robotics, medical equipment, household appliances, and various other industries. Their ability to reduce friction, support heavy loads, operate at high speeds, and provide reliability makes them indispensable components in numerous mechanical systems.

China Professional Food Machinery Used Stainless Steel 6904 ZZ C3 Deep Groove Ball Bearing   bearing airChina Professional Food Machinery Used Stainless Steel 6904 ZZ C3 Deep Groove Ball Bearing   bearing air
editor by CX 2024-04-25

Steel Ball Bearings

As one of the leading steel ball bearings manufacturers, suppliers, and exporters of mechanical products, We offer steel ball bearings and many other products.

Please get in touch with us for details.

Manufacturer supplier exporter of steel ball bearings.

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