A stuck injury is a surface injury resulting from the aggregation of minor burns in the portion of the sliding surface that was damaged. Slideway surface, rolling surface circumferential line scars. Swing line scar on the end face of roller, stick injury on the torus near the end face of roller.

The main reasons for the jam injury are: excessive load, excessive preloading, poor lubrication, foreign body biting, the inclination of the inner and outer ring, the deflection of the shaft, the poor accuracy of the shaft and bearing box.

It can be solved by proper preloading, improving lubricants and lubrication methods, and improving the accuracy of shafts and bearing boxes.

Wear failure refers to the failure caused by the continuous wear of the metal on the working surface caused by the relative sliding friction between the surfaces. The main factors causing wear failure are lubricant failure or lack of lubricant, lubrication mode is not correct, there are abrasive particles into the bearing, the load is too large.

The solution can be to improve lubricant or lubrication method, enhance the sealing mechanism and so on.

Abrasions are surface injuries that occur on raceway and rolling surfaces as a result of rolling skidding and minor burns caused by hot cracking of oil film.

Produces a rough surface with adhesion. The main causes of abrasion are high speed light load, rapid acceleration and deceleration, improper lubricant, water invasion, etc.

When biting into small metal powder or foreign matter, indentation on the raceway surface or rotary surface or due to impact during installation, forming concave surface on the spacing of the rolling body (Brinell hardness indentation).

The main factors causing the indentation are: metal powder and other foreign matter biting, assembly or transportation process by the impact load is too large.

Solution: improve sealing device, filter lubricating oil, improve assembly and use methods.

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