Wheel hub: The wheel hub is also called a rim, tire bell, or wheel. It is a cylindrical metal component with a cylindrical shape and a center mounted on the axle that supports the tire. The wheel hub varies according to the diameter, width, and molding method. There are many different types based on differences and materials used.
In terms of classification, it can be roughly divided into two types: baking paint and electroplating. When choosing wheels for ordinary models, the main consideration is whether the heat dissipation is good, and the appearance is not paid much attention to. The process basically uses baking paint treatment, that is, spraying first and then electric baking. The cost is relatively economical and the color is beautiful and lasts a long time.
Brake drum: The brake drum is the friction couple of the drum brake in the drum brake system. It has a high and stable friction coefficient, appropriate wear resistance, heat resistance, heat dissipation and heat capacity, etc., relatively high strength and Stiff, but will become brittle after aging.
The brake drum is an important part of the drum brake and has a similar function to the brake disc in the disc brake. When braking, the piston exerts pressure on two pairs of half-moon-shaped brake shoes, causing them to stick to the inner wall of the drum, thereby generating friction to stop the rotation of the wheel.