Basic Knowledge

Internal Structure
A bearing is composed of inner ring, outer ring, rolling element and cage that are usually called four parts.

In a sealed bearings there are additional lubricant and sealing part that added above four parts are usually called six parts.

 
Working Conditions
A bearing can bear an appropriate radial or/and axial load and rotate at a limited aped.
A bearing with different precision has different rotating accuracy.
When the bearing is working (rotating at a constant speed), it has the capability to withstand the radial and axial load.

Selecting different bearings according to working conditions can exert bearing function and extend the life of bearing.

Basic Types
Part Number