885117 Water Pump Bearing

885117 Automobile water pump bearing is a specific type of automobile parts, usually used in the water pump part of the automobile cooling system.

885117 Automobile Water Pump Bearing Specification:

885117 bearings belongs to the category of automobile water pump shaft bearings. It connects the water pump shaft and the housing and plays a supporting and rotating role.

Function: As a key component of automobile water pumps, 885117 shaft bearings plays a decisive role in the service life and performance of the water pump, and also affects the noise and other performance of the water pump.

2. Structure and characteristics:

Composition: Automobile water pump shaft bearings are usually composed of main shaft, ferrule, retainer and sealing ring. Among them, the main shaft and ferrule are equivalent to the combination of two zero-class bearings. The retainer material is usually reinforced nylon 66, and the sealing ring is mostly made of nitrile rubber or fluororubber.

Sealing: Since automobile water pumps work in a high temperature and high water vapor environment, the 885117 bearing has high requirements for sealing performance, and the design needs to prevent dust and water vapor from entering the bearing.

Material: The steel used for conventional shaft bearings (including shaft, outer ring, steel ball roller) is high carbon chromium bearing steel (GCr15), which has excellent wear resistance and fatigue resistance.

3. Performance parameters

Clearance: In the absence of special requirements and load, the radial clearance is usually 15-35um. Reasonable clearance selection is crucial to the operating performance and life of the bearing.

4. Application and maintenance

Lubrication: Since the pump shaft bearing works under high speed and high temperature conditions, the lubrication conditions directly affect its service life. Usually, imported high-grade grease with high dropping point and good viscosity is used for lubrication.

Installation: The installation of the bearing must be carried out in a dry and clean environment. Before installation, the matching surface quality of the shaft and the housing should be carefully checked to ensure that there are no burrs, casting sand and other impurities. During installation, special tools should be used to apply pressure evenly to avoid direct knocking on the bearing end face to cause damage.

Maintenance: Regularly check the operation of the bearing, including indicators such as noise, vibration and temperature rise. If any abnormality is found, the machine should be stopped in time for inspection and replacement of damaged bearing parts.

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