What are the types of bearings?

There are several types of bearings used in various applications. Common types include ball bearings, roller bearings, plain bearings, and fluid bearings. Ball bearings utilize balls to reduce friction between moving parts, while roller bearings use cylindrical rollers for the same purpose. Plain bearings, also known as bushings or sleeve bearings, consist of a surface with no moving parts that slides against another surface. Fluid bearings use a thin layer of fluid to separate surfaces, reducing friction and wear. Each type of bearing has its own advantages and is selected based on factors such as load, speed, and environmental conditions.