What is a brake drum? What are the categories?

Brake drum is the friction coupling of drum brake, in addition to the strength and stiffness required as a component, but also should be as high and stable friction coefficient as possible, as well as the appropriate wear resistance, heat resistance, heat dissipation and heat capacity.

The brake is a part of the braking system used to produce braking force that prevents the vehicle from moving or moving tendency. In addition to various retarding devices, almost all automobile brakes are friction brakes which generate braking torque by the friction between fixed components and rotating components working surface.

At present, friction brakes widely used in all kinds of cars can be divided into drum and disc according to the different rotating components. The difference between them lies in: drum brake friction pair of rotating elements for the brake drum, with its cylindrical inner surface as the working surface; The rotating element in the friction pair of disc brake is a disk-shaped brake disc, with its two end faces as the working surface.

Brake drum classification

The basic shape of the brake drum is drum, and there is a connecting hole on the mounting surface.

Monolithic casting type

Brake drum is made of high strength gray cast iron or alloy cast iron containing Cr. This kind of brake drum has simple structure, convenient processing, large heat capacity, but large mass, and is mostly used for medium and heavy duty vehicles.

Combined steel plate and cast iron

Brake drum by steel plate stamping drum and cast iron drum ring two parts of a body, the mass is small, used for cars and light vehicles.

Combined light alloy and cast iron

Brake drum body is light alloy material (such as aluminum alloy, etc.), lined with cast iron lining ring. This kind of brake drum is not only of small quality, but also of good heat dissipation. It is mostly used for cars.