Car wheel hub bearing abnormal damage reason - bearing knowledge

In the process of maintenance, often find some cars have bigger noise, check tire no abnormal wear and tear, no sound in the lifting machine rotating wheels. This phenomenon is often caused by wheel hub bearing abnormal damage, abnormal refers to the bearing damage due to installation. Car front wheel bearings are generally double row ball bearing, if you use the hammer knock when install the bearing installation, or when the bearing is installed into the bearing installation, by means of the pressure bearing inner ring can cause side bearing raceway damage. When the vehicle noise, and when the wheel off the ground because of race a better side, so can't hear the noise significantly. The correct installation operation is the key to long bearing life.