| Condition | Cause | Solution |
|---|---|---|
| Surface is worn and dimensions are reduced compared with other portions. Surface mostly roughened and scored. | Ingress of solid foreign objects. Dirt and other foreign objects in lubricant. Poor lubrication. Skewing of rollers. |
|
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Photo 2
- Outer ring of cylindrical roller bearing
- Stepped wear on raceway surface
- The cause is poor lubrication.
- Inner ring of cylindrical roller bearing (inner ring of which is shown in Photo 2)
- Stepped wear on full circumference of raceway
- The cause is poor lubrication.
- Outer ring of double row angular contact ball bearing (hub unit bearing)
- Wear on one side of the raceway
- The cause is poor lubrication.
- Retainer of cylindrical roller bearing
- Wear of pockets of machined high tensile brass casting retainer (G1)
