Rolling Contact Bearing

Classification of Bearing

• Depending upon type of friction

Sliding contact bearing, e.g., plain bearing, journal bearing, sleeve bearing. In this surface, the shaft slides over the surface of the bush. To reduce friction, these two surfaces are separated by a film of oil. Bush is made of white metal or bronze.

Rolling contact bearing (Anti-friction bearing) In rolling contact bearing, sliding friction is replaced by rolling friction. e.g. bearing used in machine tool spindles, automobile axles, gearboxes, and small size electric motor.

A rolling contact bearing is called as antifriction bearing as it offers very low friction f i.e.(0.005 ≤ fR.C. ≤ 0.003).