First, contact fatigue strength

Bearing in cycle under the action of contact surface fatigue damage are likely to happen, that appear cracked peeling, this is the main bearing damage form. Therefore, in order to improve the service life of the bearings, bearing steel must have high contact fatigue strength.

Second, wear-resisting performance

Bearing work, rings, rolling body and maintains a rolling friction between happened not only, and also happen sliding friction, thus make bearing parts continue to wear. In order to reduce the wear and tear of bearing parts, keep bearing accuracy stability, prolong service life, bearing steel should have very good wear-resisting performance.

Third, hardness

Hardness is one of the important quality bearing quality, to contact fatigue strength and wear resistance, elastic limit will have direct influence. Bearing steel in the use of state of the hardness in general to achieve HRC61 ~ 65, ability makes bearings to gain higher contact fatigue strength and wear resistance.

Fourth, antirust properties

In order to prevent bearing parts and in the finished product processing, storage and use of corrosion is in the process of rust, request bearing steel should have good rust resistance.



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