1: Wheel hub bearings are one of the key components of automobiles. The bearings used for automobile wheels are composed of two sets of tapered roller bearings. Their main function is to bear weight and provide precise guidance for the rotation of the wheel hub. They bear both axial and radial loads, making them a very important component. Once the bearing fails, it will be accompanied by shaking and vibration of the entire vehicle, and it is also prone to produce significant noise, which has a direct impact on driving safety.

2: The function of the wheel hub unit assembly is to carry weight, guide rotation, reduce friction, and ensure safe driving. The specific contents are as follows:

Load bearing capacity: The wheel hub unit assembly is an important component of the vehicle that needs to withstand the vertical load of the car suspension.

Guiding rotation: The bearings in the hub unit assembly provide precise guidance for the rotation of the wheels.

Reduce friction: The bearings in the hub unit assembly can reduce the friction of the wheel rotation.

Ensure safe driving: The wheel hub unit assembly needs to withstand lateral sliding forces and torsional moments generated by the braking system to ensure safe driving of the vehicle.