The Raw Materials for Ball Bearings

Time：2020.08.13  Source：Roller Bearings Suppliers

Good quality bearings must based on High quality raw materials,ZZ Bearing (Shanghai) Co., Ltd has good control of bearings raw materials. 

Bearing in the role of periodic load, contact surface is very easy to attack fatigue damage, that is, the emergence of crack spalling, which is an important failure of the bearing situation.Therefore, in order to improve the service life of bearings, bearing steel must have a high contact fatigue strength.

Bearing tasks, between the ring, the rolling body and the maintenance frame not only attack rolling friction, but also attack sliding friction, so that the bearing parts have been wear.In order to increase the wear of bearing parts, maintain the stability of bearing precision and extend the service life, bearing steel should have good wear resistance.Need ZZ 22213 EK,click here to learn more.

Hardness is one of the important qualities of bearing quality, which has indirect influence on contact fatigue strength, wear resistance and elastic limit.Bearing steel in the use of the state of the hardness of individual to reach HRC61~65, the ability to make the bearing to obtain higher contact fatigue strength and wear resistance.

In order to avoid the bearing parts and finished products being corroded and rusted in the process of processing, storing and using, the bearing steel should have good anti-rust performance.

Bearing parts in the consumption process, to go through many cold, hot processing procedures, in order to satisfy the requirements of a small amount, high efficiency, high quality, bearing steel should have good processing performance.For example, cold and hot forming performance, cutting performance, hardenability, and so on.

In addition to the above basic requirements, bearing steel should also meet the requirements of appropriate chemical composition, average external organization, less non-metallic adulterants, external defects in conformity with the specification and external decarburization layer does not exceed the regular concentration.Click here to learn more about ZZ 22214 E.

In the case of further need for impact resistance, as bearing materials using chromium steel, chromium molybdenum steel, nickel chromium molybdenum steel, the use of carbonizing quench, so that the steel from the surface to the appropriate depth of a hardened layer.With suitable hardening depth, fine structure, suitable hardness of the surface and the core of the carbon bearing, compared with the use of bearing steel bearing has excellent impact resistance.

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