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What is the cause of heat in automobile wheel bearings?

Update:19-06-2020
Abst:

1. Inspection of automotive hub bearings (1) When check […]

1. Inspection of automotive hub bearings
(1) When checking the tightness of the hub bearing, first put up the axle of the wheel at one end of the inspected hub of the car, and use the support bench, car cover and other tools to safely frame the car.

(2) Turn the wheel under test several times by hand to see if the rotation is stable and if there is abnormal noise. If the rotation is not stable and there is friction sound, it means that the braking part is abnormal; if there is no noise, the rotation is not stable and it is loose when tightened, which means that the bearing part is abnormal. The hub should be dismantled and inspected when the above abnormal phenomenon occurs.
For small cars, when checking the wheel bearings, hold the tires with both hands on the upper and lower sides, and pull the tires back and forth with both hands, repeating it many times. If it is normal, there should be no feeling of looseness and blockage; if the swinging has a clear feeling of looseness, the hub should be dismantled.

(3) Check on braking. Usually when checking the wheel bearings, the wheel brake device is also checked. If there is oil on the inside of the tire, it may be caused by the leakage of the brake cylinder or the brake oil pipe. The cause should be promptly identified and eliminated.

INA 530007310;GATES K015113; is for FIAT IVECO RENAULT

2. Maintenance attention:
During the maintenance process, it is often found that some cars have a lot of driving noise, check the tires for no abnormal wear, and there is no obvious abnormal noise when turning the wheels on the lift. This phenomenon is often caused by abnormal damage of the hub bearing. The so-called abnormal refers to the bearing damage caused by the installation reason. The front wheel bearings of automobiles are generally double-row ball bearings. If you use a hammer to install the bearings when installing the bearings, or install them by pressing the inner ring when installing the bearings into the bearing seat, it will cause one side of the bearing raceway. damage. Noise is generated when the vehicle is driving, and when the wheels are off the ground, because there is a better side of the raceway, no obvious noise can be heard. Correct installation operation is the key to the long life of bearings.

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