Damage Condition Possible Causes Countermeasures

Cracks in the raceway ring and rolling elements. Continued use under this condition leads to larger Cracks or Fractures.

Excessive interference
Excessive load, shock load
Progression of Flaking
Heat generation and Fretting caused by contact between mounting parts and raceway ring
Heat generation due to Creep
Poor taper angle of tapered shaft
Poor cylindricality of shaft
Interference with bearing chamfer due to a large shaft corner radius

  • Correct the interference
  • Check the load conditions
  • Improve the mounting method
  • Use an appropriate shaft shape