2. 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. Ventilated disc brakes have better cooling and heating effects than ordinary disc brakes by using airflow.
3. The main advantage of disc brake is that it can brake quickly when braking at high speed, and the heat dissipation effect is better than that of drum brake, and the braking efficiency is constant, so it is convenient to install advanced electronic equipment such as ABS. Metal blocks (discs) are used instead of drums, and flat brake shoes are arranged on both sides of the brake disc. When the oil pressure from the master brake cylinder is sent to the slave cylinder, the brake shoe is clamped on the brake disc to achieve the braking effect. Now it has been widely used in front wheels.