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Analysis of the reasons for the fracture of the bearing cage!

Generally speaking, the bearing cage will not be damaged under reasonable working conditions, but incorrect operations in daily production will reduce the service life of the bearing cage. The main reasons for the fracture of the bearing cage are summarized below. "

1. Poor bearing lubrication

When the bearing is running in a lean state, it is easy to form adhesive wear, which will deteriorate the working surface. The tears generated by the adhesive wear will easily enter the cage, causing abnormal load on the cage, and possibly causing the cage to break.

2. The phenomenon of bearing creep

Creep refers to the sliding phenomenon of the ferrule. In the case of insufficient interference of the mating surface, the load point moves to the surrounding direction due to the sliding, resulting in the phenomenon that the ferrule deviates from the shaft or the housing in the circumferential direction.

3. Abnormal load of bearing cage

Inadequate installation, tilting, excessive interference, etc. will easily reduce the clearance, increase friction and heat generation, soften the surface, and prematurely peel off. As the peeling expands, the peeled foreign matter enters the cage pockets, resulting in the cage The operation is blocked and additional load is generated, which intensifies the wear of the cage. Such a deteriorating cyclic action may cause the cage to break.

4. Material defects of bearing cage

Cracks, large dissimilar metal inclusions, shrinkage holes, bubbles and riveting defects, lack of nails, pad nails or gaps between the two cage halves, severe riveting, etc. may cause the cage to break.

5. Intrusion of bearing hard foreign bodies

The intrusion of foreign hard foreign objects or other impurities aggravates the wear of the cage.

We understand the reasons for the fracture of the bearing cage, and try to avoid these problems when using the bearing in the future to ensure the normal operation of the equipment.