Damage to rolling bearings - real indentations after overload

When a static bearing is subjected to static load or impact load overload, plastic deformation will occur at the contact point between the rolling element and the raceway, that is, a shallow depression or groove will be formed on the bearing raceway at a position corresponding to the rolling element pitch as shown below. In addition, this kind of real indentation can also occur if the preload is too large or if the operation is improper during assembly and disassembly.

Indentations on the ball spacing on the raceway of angular contact ball bearings caused by improper installation methods.

Scratches on the inner ring of cylindrical roller bearings caused during installation.

Improper assembly and disassembly can also cause overload and deformation of other bearing parts such as dust covers, washers and retainers.

Plastic deformation of the bearing cage at the junction caused by improper operation.

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