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Wear

Wear

Condition
  • Surface is worn and dimensions are reduced compared with other portions.
  • Surface mostly roughened and scored.
Cause
  • Ingress of solid foreign objects.
  • Dirt and other foreign objects in lubricant.
  • Poor lubrication.
  • Skewing of rollers.
Solution
  1. Selection of optimum lubricant and lubrication system
  2. Improvement in sealing efficiency
  3. Filtration of lubricating oil
  4. Elimination of misalignment

Photo: Outer ring of cylindrical roller bearing

  • Outer ring of cylindrical roller bearing
  • Stepped wear on raceway surface
  • The cause is poor lubrication.

Photo: Inner ring of cylindrical roller bearing (inner ring of which is shown in Photo 2)

  • Inner ring of cylindrical roller bearing (inner ring of which is shown in Photo 2)
  • Stepped wear on full circumference of raceway
  • The cause is poor lubrication.

Photo: Outer ring of double row angular contact ball bearing (hub unit bearing)

  • Outer ring of double row angular contact ball bearing (hub unit bearing)
  • Wear on one side of the raceway
  • The cause is poor lubrication.

Photo: Retainer of cylindrical roller bearing

  • Retainer of cylindrical roller bearing
  • Wear of pockets of machined high tensile brass casting retainer (G1)