MENU Buscar NSK - Motion & Control
Damage Condition Possible Causes Countermeasures
When debris such as small metallic particles are caught in the rolling contact zone, Denting occurs on the raceway surface or rolling element surface. Denting can occur at the rolling element pitch interval if there is a shock during the mounting (brinell dents).
  • Debris such as metallic particles are caught in the surface
  • Excessive load
  • Shock during transport or mounting
  • Clean the housing
  • Improve the sealing mechanism
  • Filter the lubrication oil
  • Improve the mounting and handling methods

 

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Denting 1

Part: Inner ring of a double-row tapered roller bearing
Symptom: Frosted raceway surface
Cause: Debris caught in the surface

Denting 2

Part: Outer ring of a double-row tapered roller bearing
Symptom: Indentations on raceway surface
Cause: Debris caught in the surface

Denting 3

Part: Inner ring of a tapered roller bearing
Symptom: Small and large indentations occur over entire raceway surface
Cause: Debris caught in the surface

Denting 4

Part: Tapered rollers of damage “Denting 3“
Symptom: Small and large indentations occur over the rolling surface
Cause: Debris caught in the surface

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