Introduction To Brake Hub

Brake hub, also known as brake drum or brake drum, is a type of cast iron component with a shape similar to a bell drum. It is fixed to the tire and rotates at the same speed. When braking, hydraulic pressure is used to push the brake shoes to contact the inner edge of the brake drum, and the friction generated by the contact is used to suppress the rotation of the tire and achieve the purpose of braking. Simply put, a brake hub is like a metal drum or a small bucket attached to the hub, and the bottom of the bucket rubs against the car's hub during braking to bring the car to a stop.
The brake drum is an important component of the drum brake system, and the inner surface of the brake drum of the drum brake is the location where the braking device generates the braking torque. When obtaining the same braking torque, the diameter of the brake drum of the drum brake device can be much smaller than that of the brake disc of the disc brake. Therefore, large vehicles used for carrying loads can only install drum brakes in the limited space of the wheels to obtain strong braking force. Drum brake systems are generally installed on the rear wheels of large vehicles.