Pillow block bearing, also known as plummer block bearing, is a type of bearing that consists of a bearing insert and a housing (or block). The bearing insert is a ball bearing, it is typically made of high-quality bearing steel, and the housing is usually made of cast iron or steel. Pillow block bearings are often used in applications that require support for rotating shafts or linear motion components.

Pillow block bearing is many types of outer spherical bearings, the common ones are, UCP, UCF, UCFL, UCFC, UCT, and other series, and each series has different sizes and specifications to meet different application requirements. When selecting and installing outer spherical bearings, reasonable selection and installation should be carried out according to specific requirements and working conditions.