Font Size: small medium large
Profile Philosophy President Oration Organization History Production and Sales Outlets
Products List Products Made in China Products Made in Japan
Technical Support List Catalog PDF Download Care and Maintenance of Bearings
Sales Company List NTN (China) Investment Corporation NTN China Limited NTN Distributors in China
Purchase Parts List Recruit Supplier
Position Introduction Application
Catalog PDF Download
Care and Maintenance of Bearings
Spalling Home >> Technical Support >> Care and Maintenance of Bearings
Condition Cause Solution
Score accompanying seizing. Mounting score in axial direction. Scores on roller end face and guide rib-cycloidal scores. Scratches in spinning direction on raceway surface and rolling contact surfaces. Poor mounting and removing practice. Oil film discontinuation on the contact surface due to excessive radial load, foreign object trapping, or excessive pre-load. Slippage or poor lubrication of rolling elements.
  1. Improvement in mounting and removing procedures
  2. Improvement in operation conditions
  3. Correction of pre-load
  4. Selection of adequate lubricant and lubrication system
  5. Improvement of sealing efficiency
  • Inner ring of cylindrical roller bearing
  • Spalling on rib
  • The cause is excessive load.
  • Inner ring of cylindrical roller bearing
  • Spalling on raceway surface and cone back face rib
  • The cause is poor lubrication.

  • Rollers of tapered roller bearing
  • Cycloidal spalling on the end faces (Scuffing)
  • The cause is poor lubrication.
  • Roller of cylindrical roller bearing.
  • Score in axial direction on rolling contact surface caused during mounting.
  • The cause is peer mounting practice.

Bearing Failures and Solutions index BACK NEXT
NTN (Hongkong) | Terms of Use | Guestbook | Site Map | Statement
Copyright © 2008 NTN Corporation All rights reserved.   You are the visitor of No.