The clutch release bearing is an important part of the car. It is installed between the clutch and the transmission. Since the clutch pressure plate, the release lever and the engine crankshaft operate synchronously, in order to ensure the smooth engagement of the clutch, soft separation, and reduce wear, the clutch and the entire The service life of the transmission system requires that the release lever can move axially along the clutch output shaft while rotating through the release bearing. The disassembly and assembly of the clutch release bearing is relatively complicated and time-consuming. Therefore, the selection of high-reliability and quality-guaranteed bearings, and reasonable maintenance and maintenance during use can prolong the life of the bearings and improve the economic benefits of users.