skf bearing automotive water pump bearing

Use conventional shaft Roller bearing steel (including shafts, outer ring, Ball & Roller) high carbon chromium bearing steel (GCr15). Because high-quality bearing steel smelting by vacuum deoxidation, electromagnetic stirring, oxide content is less, the contact pressure can withstand greater stress while the hypervariable withstand greater tensile stress by heat treatment, the hardness of the shaft raceway to 58-62HRC. Department raceway hardness of 60-64HRC, ball and roller hardness is 61-65HRC. When the shaft, outer carburizing bearing steel, the raceway hardness of 60-64HRC. Cage material usually used reinforced nylon 66, a ring of material generally use NBR, when asked high, can also be used Viton seals. Automotive water pump bearing

[1] clearance: manufacture conventional shaft bearing radial clearance clearance basis: in the absence of specific requirements, the no-load case, radial clearance is 15-35um, reasonable choice of the outer ring and the user sit hole with the amount of interference is very important, too large amount of interference causes the bearing radial clearance dropped, and damage the bearing, so that the pump does not work, practical work, in addition to the above reasons, but also need Taking into account the temperature rise caused by thermal expansion decreases the amount of clearance.