MENU Buscar NSK - Motion & Control
Damage Condition Possible Causes Countermeasures
Straight line scratches on surface of raceways or rolling elements caused during mounting or dismounting of bearing.
  • Inclination of inner and outer rings during mounting or dismounting
  • Shock load during mounting or dismounting
  • Use appropriate jig and tools
  • Avoid shock loads by using a press machine
  • Center the relative mating parts during mounting

 

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Mounting Flaws 1

Part: Inner ring of a cylindrical roller bearing
Symptom: Axial scratches on raceway surface
Cause: Inclination of inner and outer rings during mounting

Mounting Flaws 2

Part: Outer ring of a double-row cylindrical roller bearing
Symptom: Axial scratches at roller pitch intervals on raceway surface
Cause: Inclination of inner and outer rings during mounting

Mounting Flaws 3

Part: Rollers of a cylindrical roller bearing
Symptom: Axial scratches on rolling surface
Cause: Inclination of inner and outer rings during mounting

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