The characteristics of cross roller bearing material bearing steel
Contact fatigue strength
Cross-roller bearings are prone to fatigue failure on the contact surface under the action of cyclic load, that is, cracks and peeling occur, which is the main damage form of cross-roller bearings. Therefore, in order to increase its service life, its bearing steel must have high contact fatigue strength.
2. Wear resistance
When the cross-roller bearing is in operation, not only rolling friction occurs between the ring, rolling element and the spacer block, but also sliding friction occurs, so that the bearing parts continue to wear. In order to increase the wear resistance of the cross-roller bearing parts, maintain the accuracy and stability of the bearing, and extend the service life, the bearing steel should have good wear resistance.
3，Hardness
Hardness is one of the important indicators of cross-roller bearing quality, and it has an indirect influence on contact fatigue strength, wear resistance, and elastic limit. The hardness of bearing steel under operating conditions must reach HRC61~65, which can enable the bearing to achieve higher contact fatigue strength and wear resistance.
4,Anti-rust performance
In order to prevent bearing parts and finished products from being corroded and rusted during processing, storage and use, bearing steel is required to have good rust resistance.
5,Processing performance
Cross-roller bearing parts have to go through many cold and hot processing procedures in the processing process. In order to meet the requirements of low cutting volume, high efficiency and high quality, the bearing steel should have good processing performance. For example, cold and hot forming performance, cutting performance, hardenability, etc.
In addition to the above-mentioned basic requirements, precision cross-roller bearing steel should also meet the requirements of proper chemical composition, average external structure, less non-metallic impurities, external appearance defects conforming to specifications, and appearance decarburization layer not exceeding the regular concentration.
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Luoyang Yujie Industry & Trade Co.,Ltd.
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