Steel balls and rollers in automotive water pump bearings

Shaft bearing manufacturers share with you what is a water pump shaft bearing, let’s take a look. The smelting of excellent* bearing steel adopts vacuum deoxidation, electromagnetic stirring, and has less oxide content. It can withstand greater contact compressive stress while also withstanding greater high variable tensile stress. After heat treatment, the hardness of the shaft raceway It is 58-62HRC.

  The hardness of the outer ring raceway is 60-64HRC, and the hardness of the steel balls and rollers is 61-65HRC. When the shaft and outer ring are made of carburized bearing steel, the raceway hardness is 60-64HRC.

  The material of the cage is usually reinforced nylon 66, and the material of the sealing ring is generally nitrile rubber. When the requirement is higher, the fluorine rubber sealing ring can also be selected.

  Water pump shaft bearings The steel materials (including outer ring, shaft, steel ball roller) used for conventional shaft bearings are high carbon chromium bearing steel (GCr15).

  The steel balls and rollers of automobile water pump bearings are generally made of high chromium bearing steel, and the material of the shaft and outer ring of the water pump shaft bearing is made of carburized steel or high chromium bearing steel.

 The hardness of the outer ring of the water pump bearing is usually 60-64HRC, the hardness of the shaft made of high chromium bearing steel is usually 58-62HRC, the hardness of the steel ball and roller is 61-65HRC, and the shaft material is made of carburized bearing steel. The hardness of the road is usually 60-64HRC.

How to maintain the car water pump bearing better?

For newly put into use water pump bearings generally need to replace the lubricating oil (grease) after 100 hours of operation, and then every 500 hours.

For fluid bearings lubricated with grease, after running for 1500 hours, the grease can be replaced. Pay attention to the amount of oil that cannot be too much or too little to avoid heating of the bearing. The amount of oil for the bearing is generally controlled at 1/2 of the volume of the bearing chamber* 2/3 is appropriate. The oil volume of the water pump bearing should be added to the specified position. Pay attention to the container of lubricating oil or grease to be clean, and it should be sealed at ordinary times. There should be no dust, iron filings and other debris to avoid damage to the bearing.

Precautions for installation and disassembly of automobile water pump bearings

Automotive water pump bearings should be installed under clean and dry environmental conditions. The processing quality of the mating surface of the shaft and the housing, the end surface of the shoulder, the groove and the connecting surface should be carefully checked before installation. When installing the water pump bearing, it should match the connection surface, and at the same time carefully clean and remove the burrs. The surface of the unprocessed casting must be cleaned with sand.

When the automobile water pump bearing is disassembled and needs to be used again, appropriate disassembly tools should be used. During the disassembly process, the water pump bearing is matched with the ferrule, and the pulling force is applied to the ferrule. The disassembly force cannot be transmitted through the rolling elements, otherwise it will be very It is easy to crush rolling elements and raceways.