What parts of the bearing are made up?

The basic structure of the TIMKEN bearing is composed of four parts: inner ring, outer ring, rolling element (steel ball or roller) and cage.

1. Inner ring (also called inner sleeve or inner ring): usually fixed on the journal, the inner ring rotates with the shaft. There are grooves on the outer surface of the inner ring for steel balls or rollers to roll, which are called inner grooves or inner raceways.

2. Outer ring (also known as outer ring or outer ring): usually fixed on the bearing seat or the machine shell to support the rolling elements. There are also grooves on the inner surface of the outer ring for the rolling of steel balls or rollers, which are called inner grooves or inner raceways.

3. Rolling elements (steel balls or rollers): Each set of bearings is equipped with one or several sets of rolling elements, which are installed between the inner ring and the outer ring to transfer the forces of rolling. Rolling elements are load-bearing parts, and their shape, size and quantity determine the high-speed operation performance of the bearing's load-bearing capacity.

4. Cage (also called retainer or isolator): evenly separate the rolling elements in the bearing from each other, so that each rolling element can roll normally between the inner ring and the outer ring