Bearing

bearing seat for escalator

Chain tensioning wheels with ball bearings

The tapered bearings are held together typically by a an inner race that has a tapered surface for the bearings to roll against, and a flat inner radial surface to slide over a shaft. The outer race is the opposite, with the inner surface being tapered, and the outer surface being flat.

Ball Bearings are widely used in a range of machines and instruments for minimizing friction and power loss. They use balls for maintaining the separation between the movable parts of them. They are perfect for reducing rotational friction and supporting loads.

The ball-bearing industry has used SAE 52100 steel as a standard material since 1920. This is a high-carbon chromium steel which also contains small amounts of manganese and silicon.

Slewing bearings comprise an inner ring and an outer ring, one of which usually incorporates a gear. Together with attachment holes in both rings, they enable an optimized power transmission with a simple and quick connection between adjacent machine components.