A car wheel hub unit is an integral wheel hub device that integrates bearings, seals, sensors, and other related components. It usually consists of external bearings, internal bearings, wheel hubs, sealing rings and other components, which are installed on the wheels of the vehicle to support and rotate the wheels.
Specifically, the functions of the hub unit include:
Supporting the wheels: Stable axle support is provided through inner and outer bearings, allowing the wheels to rotate smoothly and supporting and bearing the weight of the wheels as well as loads from the road surface.
Power transmission: As the connection point between the wheels and the vehicle's transmission system, it transfers the power generated by the engine or electric motor to the wheels, enabling the vehicle to move.
Provide suspension support: Combined with the vehicle's suspension system, provide suspension support for the vehicle, alleviate vibrations and impacts caused by uneven road surfaces, and improve ride comfort and stability.
Monitoring and control functions: Some modern wheel hub units also integrate sensors, such as wheel speed sensors, bearing temperature sensors, etc., to monitor real-time information such as wheel speed and temperature, and send it to the vehicle's electronic control system for operation and control of ABS (anti lock braking system), traction control and other functions.
Sealing and protection: There are sealing rings and other sealing components inside, which effectively prevent dust, moisture, and other impurities from entering the bearing components, maintain good lubrication and operation status, extend the service life of the hub unit, and reduce maintenance needs.
In addition, there are various types of hub units, which can be classified into integral hub units and separated hub units according to their structure; Classified by function, it can be divided into driving hub units and non driving hub units.
With the continuous progress of automotive technology, the design and manufacturing technology of wheel hub units are also constantly evolving. Modern wheel hub units are increasingly emphasizing integration and lightweighting to improve performance and reduce energy consumption. Meanwhile, with the rapid development of the new energy vehicle market, wheel hub units are also constantly innovating to meet the special needs of new energy vehicles.
Overall, the wheel hub unit is an important component of the automotive chassis system, and its performance directly affects the driving performance, safety, and comfort of the vehicle. For car owners, understanding and paying attention to the performance and condition of the wheel hub unit is of great significance for ensuring driving safety and improving the driving experience.