Damage Condition Possible Causes Countermeasures

Smearing is surface damage which occurs from a collection of small seizures between bearing components caused by oil film rupture and/or sliding.
Surface roughening occurs along with melting.

High speed and light load
Sudden acceleration/deceleration
Improper lubricant
Entry of water

  • Improve the preload

  • Improve the bearing clearance

  • Use a lubricant with good oil film formation ability

  • Improve the sealing mechanism