In the maintenance process, it is often found that some cars have a large driving noise, check the tires for abnormal wear, and turn the wheels on the lift without obvious abnormal noise. This phenomenon is often caused by abnormal damage to the hub bearing. The so-called abnormal refers to the bearing damage caused by the installation.

The front wheel bearing of the car is generally a double-row ball bearing. When installing the bearing, if you use a hammer to knock the installation, or install the bearing by pressing the inner ring of the bearing when installing the bearing 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, there is no obvious noise due to the better side of the raceway. Correct mounting operation is the key to long bearing life