Reasons for bearing cage breakage
Reasons for bearing cage breakage

Source: ZYS    Published:2022-01-13    

In most cases, the bearing cage will not be damaged under reasonable working conditions. But the wrong operation in daily production will reduce the service life of the bearing cage. Let's take a look at what causes the bearing cage to break.

1. Poor lubrication of bearings

If the bearing is in a state of lean oil during operation, it is easy to form adhesive wear, which will deteriorate the working surface condition. The tearing objects caused by adhesive wear can easily enter the bearing cage, causing abnormal load on the bearing cage, which may cause the bearing cage to break.

2. Bearing creep phenomenon

Creep refers to the sliding phenomenon of bearing rings. When the interference of the mating surface is insufficient, the load point moves in the circumferential direction due to sliding, and the bearing ring is displaced in the circumferential direction relative to the shaft or the housing.

3. Abnormal load of bearing cage

Improper installation, inclination, and excessive interference can easily reduce the clearance, increase friction and heat generation, soften the surface, and cause abnormal peeling prematurely. As the spalling expands, the spalling foreign objects enter the bearing cage pockets, causing the bearing cage to block and generate additional loads, which aggravates the wear of the bearing cage. Such a deteriorated cyclic action may cause the bearing cage to break.

4. Defects of bearing cage material

Cracks, large foreign metal inclusions, shrinkage holes, air bubbles, and serious riveting injuries may cause the bearing cage to break.

5. Intrusion of hard foreign objects in bearings

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

6. The bearing damage

The main causes of bearing damage are: bearing cage vibration, excessive speed, wear and foreign body blockage.

7. The block of raceway

Fragments of sheet material or other hard particles may become trapped between the wedge cage and the rolling elements, preventing the latter from orbiting around its own axis.

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