Hardware Knowledge: wheel bearing inspection, maintenance, service - wheel hub bearings, bearing - metal industry

Hardware Knowledge: wheel bearing inspection, maintenance

, service - wheel hub bearings, bearing - metal industry

Wheel Bearing The main role is to load and rotation for the wheel to provide accurate guidance of both axial load they bear radial load, is a very important components. Traditional Car Wheel bearings from the two sets of tapered roller bearings or a combination of ball bearings, bearing installation, oiling, sealing and clearance adjustment is carried out in the automotive production line. This structure makes it difficult for car assembly plant, high cost and poor reliability, and car maintenance service points, also need to clean bearings, oiled and adjusted. Hub Bearing Unit is the standard angular contact ball bearings and tapered roller bearings based on the developed, it will serve as one of the two sets of bearings, with assembly performance, and can be omitted clearance adjustment, light weight, compact, load capacity large, to be pre-loaded sealed bearing grease, is omitted from the external wheel hub seals and maintenance advantages, has been widely used in cars, in trucks also have to gradually expand the application of the trend.

Charged with reducing wheel bearing friction force running the chassis to maintain the normal traffic of heavy vehicles. If the wheel bearing out of the failure, may cause noise, bearing heat and other phenomena, in particular the front wheel more evident, the direction of out of control so easily lead to dangerous behavior. Therefore, the wheel hub bearings must be scheduled for maintenance.

1. Check wheel bearings (1) Check tightness of wheel bearings, the first car inspected the wheel axle wheel erected at one end, with the support car bench, car cover and other appliances, wood frame to secure a good car.

(2) Rotate the wheel a few laps subjects to see whether the steady rotation, whether abnormal noise. If the rotation is not smooth and have friction sound, brake parts shows not normal; If there is no noise, rotation is not smooth and sometimes intensifying, shows some unusual bearings. The above anomalies should be dismantling the wheels. For small cars, check wheel bearings, tire with both hands up and down the side, his hands back and forth pulling the tires, repeated many times. If normal, then there should be no Songkuang and block the feeling; if significant Songkuang swing feel, should be dismantling the wheels.

(3) brake check area. Usually check the wheel bearings, wheel brakes with check, if there are traces of oil inside the tire, probably brake wheel cylinder or brake oil spill caused by pipeline shall promptly investigate the cause, be excluded.

2. Maintenance hub bearing wheel hub in the demolition, should make preparations for wheel maintenance, will a parked car and the bridge erected in order to ensure the safety of maintenance operations.

(1) Remove the axle head of decorative covers, dust cover;

(2) Remove the tire Nut And tires, be careful not to tire bumps Bolt Thread. If the disc brake, brake should be removed, then remove the lock ring for clamp or lock pin.

(3) with special Tool Remove the wheel hub;

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