Drum brakes wheel cylinder used on automobiles above has a history of nearly a century, but because of its reliability and powerful brake force, make the drum brake still configuration on many models (used in the rear) it with tires and fixed speed brake when using the oil pressure to push the brake drum brake shoe contact point, through the friction force generated by the contact to suppress the tire rotation to achieve the purpose of the brake drum brake of the brake plate brake wheel cylinder brake shoe and so on connecting rod spring dowels of brake drum is generally installed in the rear drum brake of the cost is low The absolute braking force is higher. The inner surface of the brake drum of the drum brake is where the brake device generates the brake torque. In the case of obtaining the same brake torque, the diameter of the drum of the drum of the drum of the drum of the drum can be smaller than the disc of the disc of the brake.
