| Condition | Cause | Solution |
|---|---|---|
| Speckles Raceway surface is matted and speckled. Speckles are clusters of tiny dents. Discoloration The surface color has changed. |
Ingress of foreign objects Poor lubrication Temper color by overheating. Deposition of deteriorated oil on surface |
Speckles
|
- Inner ring of double row tapered roller bearing (RCT bearing)
- Raceway surface is speckled
- The cause is electric pitting.
Ball of deep groove ball bearing
- Speckled all over
- The cause is foreign objects and poor lubrication
- Outer ring of spherical roller bearing
- Partial oil deposition on raceway surface
- Spherical roller bearing
- Discoloration of inner and outer ring raceway surfaces
- The cause is deterioration of lubricant.
