When a rolling bearing is damaged during machine operation, the entire machine or equipment can seize or malfunction. Since bearings that fail prematurely or unexpectedly cause trouble, it is important to be able to identify and predict failure beforehand, so that preventive measures can be adopted.
The pitted surface has a dull luster which appears on the rolling element surface or raceway surface.
- Debris becomes caught in the lubricant
- Exposure to moisture in the atmosphere
- Poor lubrication
- Improve the sealing mechanism
- Filter the lubrication oil thoroughly
- Use a proper lubricant
Part: Outer ring of a slewing bearing
Symptom: Pitting on the raceway surface
Part: Ball of damage “Pitting 1”
Symptom: Pitting on the rolling element surface