The wheels are made up of wheels, rims and spokes. The hub is a rotating assembly that connects the wheel and the axle, which is a component that mounts the tire, which is an assembly that supports the rim and hub. After continuous improvement, in the modern forging process technology conditions, the hub has become a functional overall component.

The hub is responsible for the weight of the carrier, transmission power, tire cooling and other functions, and as a rotating moving parts, the wheels with a certain degree of stiffness under the premise must meet the light, fatigue, dynamic balance and other conditions. Compared with the use of steel wheels, the current majority of passenger cars on the assembly of aluminum alloy wheels significantly reduce the weight, in the same size and the same strength conditions, the quality of aluminum alloy wheels only half of the steel wheel, light Of the aluminum alloy wheels not only make the vehicle power performance better, but also significantly enhance the vehicle's fuel-efficient performance and wheel cooling performance.

Aluminum alloy wheels as an important achievement of lightweight technology, whether it is suitable for use on trucks has been controversial. There is a view that aluminum wheels should be the standard in the high-end trucks. Those who hold this view believe that the progress of forging technology and aluminum wheels in the realization of the advantages of lightweight vehicles to determine the aluminum alloy wheels in the truck has a broad application prospects.