Selection of materials for automobile water pump shaft bearings

Date:2017-11-18 Author: Click:

For general and conventional automobile water pump shaft bearings, the material selected is steel, including steel ball rollers, outer rings, shafts and other materials are all high-carbon chromium bearing steel (GCr15). High-quality bearing steel undergoes vacuum deoxidation, electromagnetic stirring, and has less oxide content. Therefore, it can withstand large contact compressive stress while also withstanding large high variable tensile stress. After the bearing steel is heat-treated, the raceway hardness of the shaft is generally 58-62HRC. The hardness of the steel ball and roller is 61-65HRC, and the hardness of the ring raceway is 60-64HRC.

When the outer ring of the car water pump shaft bearing is made of carburized bearing steel, the hardness of its raceway is 60-64HRC.