The brake disc is made of alloy steel and fixed on the wheel and rotates with the wheel. The pump is fixed on the brake plate is fixed on both sides of the two system 'dynamic friction plate clamp are respectively arranged in the brake disc, piston pump by hydraulic tubing to transport, push the friction plate to press the brake disc friction brake, act like tongs clamped in rotating plate, forcing it to stop.

Disc brakes are quick in heat dissipation, light in weight, simple in construction and easy to adjust. Especially when the load is high, the high temperature performance is good, the braking effect is stable, and it is not afraid of muddy water invasion. In winter and under bad road conditions, disc brake is easier to stop in less time than drum brake. Some disc brakes on the brake disc also open a number of small holes, to speed up ventilation and improve the efficiency of braking.