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Axial scratches on raceway surface - Bearing defects


Figure 1: Axial scratches on raceway surface.

Defect name: Mounting flaws
Record No.: 1426
Type of defect (Internal/Surface): Surface
Defect classification: Bearing defects
Steel name: Steel
Steel composition in weight %: No data.
Note:  
Damage conditions: Straight line scratches on surface of raceways or rolling elements caused during mounting or dismounting of bearing.
Possible cause: Inclination of inner and outer rings during mounting or dismounting. Shock load during mounting or dismounting.
Measures: - Use appropriate jig and tool.
- Avoid a shock load by use of a press machine.
- Center the relative mating parts during mounting.
Part: Inner ring of a cylindrical roller bearing.
Symptom: Axial scratches on raceway surface.
Cause: Inclination of inner and outer rings during mounting.
Reference: Not shown in this demonstration version.