Damage Condition

Cage damage includes: Cage deformation, fracture and wear; Fracture of cage pillars; Deformation of side face; Wear of pocket surface; and Wear of guide surface.

Possible Causes

• Poor mounting (Bearing misalignment)

• Poor handling

• Large moment load

• Shock and large vibration

• Excessive rotation speed, sudden acceleration and deceleration

• Poor lubrication

• Temperature rise

Countermeasures

• Check the mounting method

• Check the temperature, rotation and load conditions

• Reduce the vibration

• Select a different cage type

• Select a different lubrication method and/or lubricant

Cage Damage 1

Part: Cage of a deep groove ball bearing
Symptom: Fracture of pressed-steel cage pocket

Cage Damage 2

Part: Cage of an angular contact ball bearing
Symptom: Pocket pillar Fractures of a cast iron machined cage
Cause: Abnormal load action on cage due to misaligned mounting between inner and outer rings

Cage Damage 3

Part: Cage of an angular contact ball bearing
Symptom: Fracture of machined high-tension brass cage

Cage Damage 4

Part: Cage of a tapered roller bearing
Symptom: Pillar Fractures of pressed-steel cage

Cage Damage 5

Part: Cage of an angular contact ball bearing
Symptom: Pressed-steel cage deformation
Cause: Shock load due to poor handling

Cage Damage 6

Part: Cage of a cylindrical roller bearing
Symptom: Deformation of the side face of machined high-tension brass cage
Cause: Large shock during mounting

Cage Damage 7

Part: Cage of a cylindrical roller bearing
Symptom: Deformation and Wear of machined high-tension brass cage

Cage Damage 8

Part: Cage of an angular contact ball bearing
Symptom: Stepped Wear on the outside surface and pocket surface of machined high-tension brass cage

（This article is from BearingNews.com