The thermal expansion of the brake disc along the thickness direction is very small, which will not increase the brake clearance significantly as the brake drum does, resulting in excessive brake pedal travel; It is easy to realize automatic clearance adjustment, and other maintenance and repair operations are relatively simple.

Generally, there is no friction potential, so the brake efficiency is less affected by the friction factor, that is, the efficiency is more stable; The efficiency decreases less after water ingress, and it can return to normal after only one or two times of braking; Under the same output braking torque, the size and mass are smaller than that of drum brake;