Bearingtype
A bearing is a machine element that constrains relative motion between two parts, typically permitting rotation while reducing friction. Bearings support radial and axial loads and guide movement, usually by using rolling elements or sliding contact, and require lubrication to limit wear and temperature.
Most bearings are classified as rolling bearings, which use balls or rollers to roll between races, or
Rolling bearings include ball bearings and roller bearings. Ball bearings handle moderate radial and axial loads
Roller bearings use cylindrical, needle, spherical, or tapered rollers to carry larger radial loads. They have
Plain bearings, or bushings, use a sliding interface between surfaces. They employ materials such as bronze
Selection considerations include load type and magnitude, speed, alignment, temperature, lubrication, enclosure (sealed versus open), maintenance,