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Causes and Countermeasures of bearing damage

Incorrect use will result in bearing damage and life shortening. The following table lists the common bearing damage and recommended countermeasures.

Question Damage status Reason Countermeasure
Surface spalling Premature spalling of raceway surface and rolling element surface (Fig. 1) Excessive load
The load is too small
Poor lubrication
Poor installation
embroidery
Use appropriate interference
Use proper clearance
Use proper lubricant and lubricant quantity
Spalling of surfaces inclined relative to raceway (Fig. 2) Poor installation and center
Axial deflection
Poor accuracy of shaft and bearing housing
Attention should be paid to the installation and processing of the center of the circle
Select large clearance bearing
Vertical correction of shaft and bearing housing
Surface spalling at symmetrical position of raceway Poor accuracy of bearing pedestal Accuracy correction of bearing housing inner diameter surface
indentation Spacing indentation caused by rolling element in raceway (Fig. 3) Impact load during installation or falling
Excessive load at rest
Pay attention to check the static load when using
Indentation on raceway surface and rolling element surface Sand or metal particles entering Clean the shaft and bearing sleeve
Check the sealing device
Abrasions and burns Surface discoloration and softening adhesion of raceway and rolling element (Fig. 4) The clearance is too small
Poor lubrication
Poor installation
Use proper clearance
Use proper lubricant and lubricant quantity
Check the installation method and related parts
Cracks Raceway surface splitting (Fig. 5) Excessive impact load
Large interference
Surface peeling or severe burn
The fillet of the installation part is large
Use appropriate loads
Use appropriate interference
Check the accuracy of the shaft
Fillet correction is proportional to small bearing chamfer
Steel ball splitting Excessive impact load
Excessive work clearance
Use the right load
Check installation and clearance
Cage damaged (Fig. 6) Tilting moment
High speed or high acceleration rotary impact
Improper lubrication
Foreign matter entry
Carefully check the operating conditions during installation
Check lubricant and lubrication method
Improved sealing device
Bite to death The surface of raceway and rolling element is occluded (Fig. 7) Grease hardening
Excessive acceleration at the beginning of rotation
Use softer grease
Control acceleration
abrasion Abnormal wear of raceway, rolling element and cage (Fig. 8) Foreign matter entry
embroidery
Poor lubrication
Improved sealing device
Use proper lubricant and lubricant quantity
Adhesive wear (creep) of mating surface (Fig. 9) Insufficient interference
Incorrect installation
Use appropriate interference
Correct installation
Red wear of mating surface (micro vibration wear) (FIG. 10) Small gap on the mating surface Increase interference
Micro vibration wear of raceway with rolling element spacing (incorrect surface deformation) Vibration of non rotating coil
Small shaking vibration
Shaft and bearing seat fixed
Lubricate the preload with lubricating oil

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  • Release: Goode bearings
  • Time: June 14, 2017
  • Views: 961