We provide different material of 6902RS bearing

6902RS bearing-Chrome/Stainless steel
The structure and material is simple and easy to use. It is mainly used to withstand radial loads, but when the radial clearance of the bearing is increased.It has a certain degree of angular contact ball bearing performance.And can withstand combined radial and axial loads. The structure is simple, making it easy to produce in series and large quantities.And the manufacturing cost is also relatively low, making it extremely common to use. Can be used for gearboxes, instruments, motors, household appliances, internal combustion engines.Transportation vehicles, agricultural machinery, construction machinery, engineering machinery.Roller skates, yo yo, etc.

6902RS bearing-silicon nitride material
The advantages are: high maximum speed, good precision retention, small starting torque, and high stiffness. Good dry operation and long service life. Very suitable for maintaining high precision and long-term operation under high-speed, high temperature, corrosion, and radiation conditions.Mainly used in CNC machine tools and high-speed precision machinery. Such as high-speed electric spindle bearings, machine tool spindle bearings, dental drill bearings, instrument bearings, computer hard disk drive bearings, etc. In addition, the hardness of silicon nitride ceramics is twice that of bearing steel.And the elastic modulus is about 1/3 higher. Under the same load conditions, the elastic deformation of silicon nitride ceramics is small.

6902RS bearing-zirconium oxide
High hardness and wear resistance: The hardness of zirconia ceramics is close to the Mohs hardness of 9.5, far exceeding that of metal materials.And the wear rate is reduced by more than 40% under high-speed and high load conditions.
High flexural strength: Zirconia ceramics treated with special processes can withstand complex loads and are suitable for extreme environments such as aerospace.
High temperature resistance: Maintain dimensional stability even at high temperatures to avoid softening of metal bearings.
Low thermal expansion coefficient: The size fluctuation is minimal when the temperature changes dramatically.Making it suitable for precision optical instruments.
Corrosion resistance: Highly inert to strong acids, alkalis, and other media, suitable for corrosive environments such as chemical and marine machinery.
Electrical insulation: High resistance characteristics can prevent arc damage and are suitable for power equipment.
Self lubrication and low friction: The friction coefficient is as low as 0.1-0.15, requiring no additional lubrication and suitable for vacuum or clean environments.

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Contact: April
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