Water pump shaft-connected bearings The steel used for conventional shaft-connected bearings (including shaft, outer ring, and steel ball rollers) is high-carbon chromium bearing steel (GCr15).

Because the smelting of high-quality bearing steel is through vacuum deoxidation, electromagnetic stirring, and the oxide content is small, it can withstand a large contact compressive stress and a large high-variable tensile stress. After heat treatment, the hardness of the shaft raceway for 58-62HRC. The outer ring raceway hardness is 60-64HRC, and the steel ball and roller hardness is 61-65HRC. When the shaft and outer ring are made of carburized bearing steel, the hardness of the raceway is 60-64HRC. The cage material is usually reinforced nylon 66, and the material of the sealing ring is generally made of nitrile rubber. When the requirements are higher, the fluorine rubber sealing ring can also be used.

1. Improper operation, improper installation, operation or disassembly may cause deformation or defect of the cage

2. Insufficient lubrication, insufficient or improper lubrication may cause component abrasion or serious deformation of INA imported bearings

3. The bearing is rusted or corroded, and contact with water may cause the bearing components of the pump shaft to be corroded and rusted. Imported bearings damaged by rust may cause spalling during operation

4. Electric current, energization while turning may cause grooves or nicks. Improper grounding of electrical operations can cause minor burns when the inlet bearing is stationary

5. With external machining materials, abrasive particle contamination and debris intrusion may cause wear, galling and denting of the inlet bearing running surface

6. Deviated axis, eccentric, inclined or excessive load may cause geometric stress concentration or surface peeling