‌Water pump bearings are specially designed for water pump applications, with specific structural and material requirements. ‌Water pump bearings are usually made of high carbon chromium bearing steel (GCr15), which has high hardness and wear resistance and can withstand large contact pressure and high tensile stress. In terms of design, the raceway of the water pump bearing is directly made on the shaft, and the outer ring is made as a whole and sealed with a seal. This structure simplifies the installation and maintenance of the bearing.