Ball bearing is a type of rolling-element bearing that uses balls to maintain the separation between the bearing races. It reduces rotational friction and support radial and axial loads.
Ball bearings are mainly composed of four basic elements:
- Inner ring
- Outer ring
- Retainer, also called cage
The balls and rings of general industrial ball bearings are usually made of high chromium steel, with Rockwell C-scale hardness between 61-65.
The hardness of the retainer is lower than that of the ball and ring, and its materials are metal (such as: medium carbon steel, aluminum alloy) or non-metal (such as: Teflon, PTFE, polymer materials).
Ball bearings have lower rotational frictional resistance than journal bearings, so at the same speed, the temperature generated by friction will be lower.
Ball Bearings include
- Deep Groove Ball Bearings
- Insert Bearings(Y-bearings)
- Angular Contact Ball Bearings
- Self-aligning Ball Bearings
- Thrust Ball Bearings
- Angular Contact Thrust Ball Bearings
- Thin Section Bearings