The Difference Between Electro-Hydraulic Disc Brakes and Electro-Hydraulic Drum Brakes

1. Electro-hydraulic drum brakes are cheap to manufacture and conform to traditional designs. For heavy-duty crane, since the speed of the crane is generally not very high, the durability of the brake pads is also higher than that of electro-hydraulic disc brakes. And in the case of obtaining the same braking torque, the diameter of the brake drum of the electro-hydraulic drum brake device is much smaller than that of the electro-hydraulic disc type. So many heavy-duty cranes still use the electro-hydraulic drum brakes design;

2. The heat dissipation performance of the electro-hydraulic disc brake is very good, and the response of the braking system is relatively fast, which can be used for high-frequency braking action. Compared with electro-hydraulic drum brakes, electro-hydraulic disc brakes are simple in structure and easy to maintain. Under the same size, since the contact area between the brake pads of the electro-hydraulic drum brake and the brake drum is larger than that of the electro-hydraulic disc brake, the braking force of the electro-hydraulic drum brake is also larger;

3. The heat dissipation of electro-hydraulic drum brakes is much worse. Secondly, the stability of the braking force is insufficient. The braking changes on different roads are very large, and it is not easy to control. When the brakes are continuously applied, the brakes performance may decline and the brakes may fail. In addition, after using the electro-hydraulic drum brake for a period of time, it is necessary to regularly adjust the gap of the brake shoe, and even remove the entire brake drum to clean up the accumulated brake powder;

4. The cost of electro-hydraulic disc brakes is relatively expensive, and it is not suitable for some special environments. For example, in the case of more sand and gravels, the brake discs will be easily damaged. In addition, the friction area between the disc brake pad and the brake disc is smaller than that of the drum brake, the braking force is also smaller, and the wear of the brake pad is larger, and the replacement frequency is higher.