NEW

Zhejiang Lckauto Parts Co., Ltd. Home / News / Industry News / Wheel Hub Bearing: Key Support for Car Driving

Wheel Hub Bearing: Key Support for Car Driving

Zhejiang Lckauto Parts Co., Ltd. 2025.02.22
Zhejiang Lckauto Parts Co., Ltd. Industry News
In modern automobile engineering, Wheel Hub Bearing plays a vital role. As a key component connecting the wheel and the drive shaft, it not only bears the entire weight of the vehicle, but also ensures the smooth rotation of the wheel during driving.
The working principle of the wheel hub bearing is based on the principle of rolling friction. The rolling elements (such as balls or rollers) roll between the inner and outer rings, effectively reducing the sliding friction between mechanical parts. This design not only reduces energy loss and heat generation, but also significantly improves mechanical efficiency and service life. During the operation of the bearing, the contact points between the rolling elements and the inner and outer rings are under tremendous pressure, and these pressure points constitute the key to the bearing's ability to withstand loads.
Traditional automobile wheel bearings are usually composed of two sets of tapered roller bearings or ball bearings, but this structure has problems such as difficult assembly, high cost, and poor reliability. With the advancement of technology, the wheel hub bearing unit came into being. It integrates two sets of bearings into one, with the advantages of good assembly performance, light weight, compact structure, and large load capacity. The wheel hub bearing unit also adopts a sealing design, which can be pre-loaded with grease, thus omitting the external wheel hub sealing and maintenance steps, greatly reducing maintenance costs.
The wheel hub unit is usually designed with an inner flange and an outer flange, the inner flange is bolted to the drive shaft, and the outer flange mounts the entire bearing together. This design not only improves the rigidity and stability of the bearing, but also ensures the precise guidance of the wheel during driving.
The maintenance of the wheel hub bearing is essential to ensure the safe driving of the car. Regularly checking the tightness, lubrication status and wear of the bearing is an effective means to prevent bearing failure. During the inspection, if the bearing is found to rotate unsteadily, have abnormal noise or heat, it should be disassembled and repaired immediately.
When repairing, the tire and wheel hub should be removed first, then the old grease should be scraped off, the bearing and journal should be cleaned with a cleaning agent, and new grease should be applied. When applying grease, care should be taken not to apply excessively to avoid affecting heat dissipation and braking performance. When installing the bearing, ensure that the matching clearance between the bearing and the race is within the specified range, and use special tools for installation and adjustment.
As an important part of the vehicle's running system, the performance of the wheel hub bearing directly affects the vehicle's driving stability and safety. If the wheel hub bearing fails, it may cause dangerous phenomena such as noise, heat, and loss of control. Especially at high speeds or in bad road conditions, the failure of the bearing may cause serious traffic accidents.
Therefore, car owners should regularly inspect and maintain the wheel hub bearing to ensure that it is in good working condition. At the same time, when purchasing bearings, products with reliable quality and superior performance should be selected to ensure the safe driving of the car.