Bearings Classification

Bearings are classified in  main two categories:
1) Plain or sliding contact bearings 
2) Rolling or anti-friction bearings

Further classification are given below:
1)Plain or sliding bearings : -

In which the rotating shaft has a sliding contact with the bearing which is held stationary . Due to large contact area friction between mating parts is high requiring greater lubrication.

Further classified in two categories: 
- Metallic sliding bearings
- Non-metallic sliding bearings

Then further classified based on their loading, lubrication and configurations:
Based on loading:
- Axial Loading bearings
- Radial Loading bearings