Common Bearing Damage :

1) The raceway surface and the roller surface are full of dents, the particles on the cage and the raceway surface are worn, and the grease (agent) is discolored. Usually this situation is caused by the unclean installation process.

Keep it clean during installation, use new grease, and check whether the seal is intact.

2) Wear caused by improper lubrication

The abrasion of the surface is mirror-like, and the color is blue or brown. This situation is caused by insufficient lubrication. The lubrication condition should be improved and the lubrication period and oil seal should be re-determined.

3) Dent caused by improper installation

The working surfaces of the inner and outer rings have dents with a pitch equal to the distance between the rollers. The reason is that it is not knocked on the correct ring during installation, or is pushed too far on the conical shaft, or is overloaded at rest.

4) Dents caused by foreign objects

There are dents on the work surface and roller surface, which may be caused by foreign matter or lubricant foreign matter and the surrounding environment during installation. Clean the bearing installation, use clean lubricant and check the oil seal.

5) Scratch on the roller end

The roller end surface rubs against the guide ribs, causing nicks and discoloration. This situation is caused by slippage under excessive axial load or insufficient lubrication. For this type of damage, a lubricant with a higher viscosity can be selected.

6) Abrasion of roller and raceway

At the beginning of the load zone of the raceway, there is abrasion and partial discoloration with the roller, which is caused by the sudden acceleration of the roller entering the load zone. There are two possible ways: one is to choose a higher viscosity lubricant; the other is to reduce the bearing clearance.

7) Abrasion on the outer surface

The inner hole of the inner ring and the outer surface of the outer ring have nicks and partial discoloration, which is caused by the relative movement of the ring and the shaft or the bearing housing.

The only solution is to increase the interference between the ring and the shaft or bearing box to prevent mutual rotation. Axial braking or clamping cannot solve such problems.