ceramic bearing 6902

Deep groove ball bearing with seals or shields

Single row deep groove ball bearings with seals or shields are particularly versatile, 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 many other bearing types. The integral sealing can significantly prolong bearing service life because it keeps lubricant in the bearings and contaminants out.Integral sea

ling prolongs bearing service life

Simple, versatile and robust design

Low friction and high-speed capability

Accommodate radial and axial loads in both directions

Require little maintenance

Knowledge and introduction of bearings    :                                                                                                 

The 6902 ceramic bearing is a precision bearing that utilizes advanced ceramic materials to provide exceptional performance in specific applications. Here is a detailed introduction to the 6902 ceramic bearing in English:

1. Design Features:

• The 6902 ceramic bearing is known for its precision and is manufactured using advanced ceramic materials such as Silicon Nitride (Si3N4), Zirconium Dioxide (ZrO2), or Silicon Carbide (SiC).

• These bearings have an inner diameter of 15 mm, an outer diameter of 28 mm, and a width of 7 mm.

2. Benefits:

• High Temperature Resistance: Made from materials like Silicon Nitride, these bearings can withstand extreme temperatures and maintain performance even in high-heat applications.

• Corrosion and Chemical Resistance: They are durable when exposed to corrosive chemicals, making them suitable for environments with such challenges.

• Low Friction: Reduced friction in these bearings leads to lower wear, less heat generation, and an extended service life.

• Non-magnetic: Ceramics are non-magnetic, which is ideal for applications where magnetic interference is a concern.

• Electrical Insulation: Being non-conductive, these bearings are perfect for applications requiring electrical insulation.

3. Applications:

• Precision Machinery: Especially in high-speed spindle applications where precision and reduced friction are crucial.

• Electric Motors: Ideal for high-efficiency, high-performance settings. Their non-conductive nature ensures minimal electrical interference.

• Aerospace Equipment: Used in systems sensitive to weight and extreme conditions, such as satellite gyroscopes and guidance systems.

• Medical Equipment: Found in high-performance equipment like MRI machines, surgical instruments, and dental drills that require precision and low noise.

• High-Performance Vehicles: They can withstand high-speed operation while reducing heat, making them ideal for racing cars or motorcycles' wheels and engine bearings.

4. Technical Specifications:

• Dynamic Load Rating (Cr): 5.40 kN

• Static Load Rating (C0r): 2.25 kN

• Fatigue Load Limit (Cu): 0.120 kN

• Limiting Speeds: 23000 RPM with grease lubrication.

5. Construction:

• The 6902 ceramic bearing features a single-row deep groove design with a steel raceway and ceramic balls. The balls are held in place by a reinforced polyamide cage, and each bearing is optimized with low viscosity CeramicSpeed “Blue Grease” to minimize friction and increase bearing life. Non-contact seals are also included to keep dirt and moisture out.

6. Maintenance:

• Ceramic bearings like the 6902 require proper maintenance to achieve the lowest friction and the best longevity. It is important to follow the manufacturer's instructions for cleaning and maintaining these bearings.

The 6902 ceramic bearing's combination of high load ratings, high-speed capabilities, and unique material properties make it a popular choice for a wide range of applications where reliability, performance, and longevity are critical.

For further details on this product please directly contact our sales department under shh@dmsw.com 

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