Common failures of an automotive wheel hub unit:
Bearing damage: Bearing is an important component of the wheel hub unit. High-speed driving for long, lack of lubrication, or water ingress may cause bearing damage, which in turn can lead to increased hub noise and unsmooth rotation, and even prevent normal running of the vehicle in severe cases.
Aging of seal: If a seal in the wheel hub unit ages or breaks, water vapor many penetrate into the unit, causing bearing rust and damage of internal components.
Hub wear: High-speed driving for long or poor road conditions may cause wheel hub wear, including surface damage and deformation, thus affecting driving stability.
Loose hub screws: The wheel hub unit is fixed to the wheel. If hub screws are loose, the hub may shift and swing, and affect driving safety.
Damage of internal components: Damage of other components of the wheel hub unit (such as sensor and wiring harness) may also impact driving performance or functions of the vehicle.
Causes of failures of an automotive wheel hub unit:
Wheel hub wear: Driving for long or poor road conditions may cause wheel hub wear, including deformation, crack, and surface damage, thus affecting driving safety.
Wheel hub bearing damage: Bearing of the hub unit is a key part for supporting rotating wheels. If the bearing is damaged or worn, it can cause unsmooth wheel rotation, abnormal noise, or even wheel locking, thereby affecting driving safety.
Aging or damage of seal: If a seal in the wheel hub unit ages or breaks, water, dust, or other foreign matters many enter the unit, causing bearing rust and damage of internal components.
Excessive force: The hub unit is subjected to pressure load due to road vibration and vehicle weight during driving. If the vehicle often runs on bumpy roads or is overloaded, it may cause fatigue, crack, or damage of components of the hub unit.
Loose hub screws: The wheel hub unit is fixed to the wheel. If hub screws are loose or if the threads are damaged, it can cause instability of the wheel hub and affect driving safety.
