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Rolling Path Skewing

Rolling Path Skewing

Condition
  • Rolling element contact path on raceway surface strays or skews.
Cause
  • Deformation or tilt of bearing ring due to poor accuracy of shaft or housing
  • Poor rigidity of shaft or housing
  • Deflection of shaft due to excessive clearance
Solution
  1. Improvement in machining accuracy of shaft and housing
  2. Improvement in rigidity of shaft and housing
  3. Employment of adequate clearance

Photo: Spherical roller bearing

  • Spherical roller bearing
  • Contacts on inner ring, outer ring, and rollers are not even.
  • The cause is poor mounting.

Photo: Outer ring of tapered roller bearings

  • Outer ring of tapered roller bearings
  • Contact path on raceway surface strays.
  • The cause is poor mounting.

Photo: Rollers of tapered roller bearing of which outer ring is shown in Photo 7

  • Rollers of tapered roller bearing of which outer ring is shown in Photo 7
  • Contact marks on rolling contact surfaces are not even.