requirements for bearing:
1.high load bearing
2.high rotate speed
3.long service life
advantages of zmsf bearing：
1.the optimized design structure of products contributes to an increase of 20% rated load.
2.the ball bearing steel is fatigue resistant and superior to the industrial standard in terms of the content of poisonous metals.
3.the tampering heat treatment to the parts helps reduce cracking, and improve fatigue resistance, hardness, abrasive resistance, tenacity and structure stability.
4.the internal structure is optimized, the lubrication is improved, and the service life is extended.