bearing Scratch

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Damage mode	Causes	Solutions
● by scratch, it means surface damage caused by collection of tiny burnsresulting from skidding and oil film hot breaking on the raceway or rolling path ● produce rough surface with hot sticking	● high-speed light load ● acceleration and deceleration ● impropriate lubricant ● water ingress	● improve preload ● improve bearing clearance ● use lubricant with good oil film property ● improve lubricating method ● improve seal
● inner ring of cylinder roller bearing ● scratch at the circumferential direction of the roller path ● cause: excessive lubricant leads to roller skidding	● spherical roller bearing inner ring ● scratch at the circumferential direction of roller path ● caused by poor lubrication	● spherical roller bearing spherical roller ● scratch at the center of rolling surface ● caused by poor lubrication

Damage mode

Causes

Solutions

● by scratch, it means surface damage

caused by collection of tiny burnsresulting

from skidding and oil film hot breaking on the raceway or rolling path

● produce rough surface with hot sticking

● high-speed light load
● acceleration and deceleration
● impropriate lubricant
● water ingress

● improve preload
● improve bearing clearance
● use lubricant with good oil film property
● improve lubricating method
● improve seal

bearing Scratch

● inner ring of cylinder roller bearing

● scratch at the circumferential

direction of the roller path

● cause: excessive lubricant leads

to roller skidding

bearing Scratch

● spherical roller bearing inner ring
● scratch at the circumferential direction of roller path
● caused by poor lubrication

● spherical roller bearing spherical roller
● scratch at the center of rolling surface
● caused by poor lubrication