Rolling Bearing

A rolling bearing is a mechanical component that supports rotational motion by rolling elements (such as steel balls, rollers, or needles) rolling between two rings. Its primary function is to reduce friction between rotating parts and transmit loads.
Unlike plain bearings, rolling bearings utilize rolling friction, resulting in a very low coefficient of friction and low starting resistance. This has led to their widespread use in various mechanical devices, such as automobiles, motors, machine tools, and household appliances.
Based on the shape of the rolling elements, rolling bearings can be divided into several types, including deep groove ball bearings and angular contact ball bearings, which use steel balls, and cylindrical and tapered roller bearings, which use rollers. Each type has its own specific structure and application scenarios, meeting varying speed, load, and precision requirements.