Seizing --- NTN (China) Investment Corporation

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

Seizing

Home >> Technical Support >> Care and Maintenance of Bearings

Condition	Cause	Solution
Bearing generates heat and is seized up by heat disabling spinning. Discoloration, softening, and welding of raceway surface, rolling contact surfaces, and rib surface.	Dissipation of heat generated by bearing is not enough. Poor lubrication or lubricant improper. Clearance excessively small. Excessive load (or pre-load). Roller skewing and installation error.	Improve dissipation of heat from bearing Selection of suitable lubricant and determination of optimum lubricant feeding rate. Prevention of misalignment Improvement in clearance and pre-load Improvement in operating conditions

Photo 4

Inner ring of double row tapered roller bearing
Seizing-up discolors and softens inner ring producing stepped wear at spacing equal to distances between the rollers.
The cause is poor lubrication.

Rollers of double row tapered roller bearing
Rollers of same bearing as that of the inner ring shown in Photo 4.
Discoloration, spalling, and adhesion due to seizing up on rolling contact surfaces and end faces of rollers.

Outer ring of spherical roller bearing
Stepped wear due to seizing up of raceway surface.
The cause is poor lubrication.

Inner ring of tapered roller bearing
Large end of the raceway surface and cone back face rib surface are seized up.
The cause is poor lubrication.

Bearing Failures and Solutions index BACK NEXT