A hard plating applied to bearings for wear resistance and corrosion protection. The hardness is approximately 72 on the Rockwell C scale.

Patented high-lead and high-tin alloys used to reduce friction in plain bearings.

See also austeniting

Generally, any rolling element bearing which uses balls as the friction reducing elements. There are three general types of ball bearings, reflecting the direction of the load the bearing is designed to carry: radial, thrust, and angular contact.

A linear motion bearing where the inner race is helical. Each ball screw assembly consists of a screw with a precision ground or rolled helical groove, a nut (the outer race) with an internal groove, and a circuit of precision steel balls that recirculate in the grooves between the screw and nut. This anti-friction design converts torque to thrust [..]

Any device designed to reduce friction, also designed to constrain motion of mechanical devices along one or more axes. Rolling element bearings generally have three components: an inner race, an outer race (or housing) and rolling elements. Plain bearings and bushings generally are one-piece units where the rotating element rides directly against [..]

A black metal finish produced by immersing the item in hot oxidizing salts or salt solutions.

Swedish engineer; developer of the Brinell hardness test and equipment. Brinell was chief engineer of the Swedish Ironmasters Association; he first showed his test and equipment at the Paris Exhibition in 1900.

The indentation of inner or outer race material caused by the rolling elements. There are two types of brinelling, true brinelling and false brinelling. True is due to material deformation under excessive operating pressure, false is wear-related or vibration-related.

Also Retainer