Ball Bearing Construction

Ball Bearing Construction

Ball bearings is kind of rolling bearings. They allow very high rotating speed.

The following four parts usually constitute the ball bearing construction:

Outer ring: it in general does not move in case of rolling.

Inner ring: it rotates with the shaft.

Balls: they are mounted between the inner and outer rings, enable the movement between them.

Cages: they are holders for the balls to retain them in the right positions. Usually they are made of brass or steel.

Shields or seals: they are mainly functioned to prevent contaminant. Those bearings are well-lubricated with grease ex work.