What is a disc brake?

The disc brake consists of a brake disc connected to the wheel and a caliper located at the edge of the brake disc. When braking, the high-pressure brake oil pushes the brake pad to clamp the brake disc, resulting in braking effect.

Disc brakes are sometimes called disc brakes, which are divided into ordinary disc brakes and ventilated disc brakes. Ventilated disc brake is to drill many circular vent holes on the disc surface, or cut vent grooves or prefabricate rectangular vent holes on the end surface of the disc surface.

Principle of disc brake:

Pull the brake handle of the hydraulic disc brake to displace the piston in the master cylinder, and the piston pushes the brake oil into the caliper cylinder through the oil pipe. Due to Pascal's principle (when any point in an incompressible static fluid is increased by external force, the increase of pressure will be transmitted to all points of the static fluid in an instant), an amplified pressure will be generated in the disc brake system, which will push the caliper to the disc to generate friction, thus completing the braking process.

Extended data:

Characteristics of disc brake:

1, high temperature resistance under high load, stable braking effect, and no fear of mud invasion. When driving in winter and bad road conditions, disc braking is easier to stop the car in a shorter time than drum braking.

2. Some disc brakes have many small holes in the brake disc to accelerate ventilation and heat dissipation and improve braking efficiency.

3. The service life of the brake pad is long, especially in rainy days. The V-clamp loss is just like cutting with a knife, and the brake pad can be polished with a long stroke.

4. The tire won't get stuck because of mud, and the V gets stuck in the gap between the wheel frame and the brake pad, so it is easy to get stuck in mud.

Reference: Baidu Encyclopedia-Disc Brake