Damage Condition Possible Causes Countermeasures

Fracture refers to small pieces which were broken off due to excessive load or shock load acting locally on a roller corner or rib of a raceway ring.

Impact during mounting
Excessive load
Poor handling such as dropping

  • Improve the mounting method (shrink fit, use of proper tools)
  • Reconsider the load conditions
  • Provide enough back-up and support for the bearing rib