What’s bearing made from?

Rolling bearing is made from the inner race, outer race, cage, dust cap and rolling element.

The rolling bearing structure is install the cage between the inner race and out race, then put multiple rolling element in the cage, let it can keep rolling in fixed distance.

There are three types of rolling element, ball, needle, roller, each one can face a different situation.

As the dust cap, also have two types can be chosen, which is steel cap and plastic cap.