Disc brake and drum brake are two common brake systems, they have significant differences in working principle, structure, heat dissipation performance, maintenance cost and braking effect.
Working principle and structural differences: the disc brake fixes the brake pad to the wheel through the clamp, and uses the tension of the brake line to clamp the brake pad, thereby generating friction to slow down until the stop. The structure of the disc brake is relatively simple, mainly composed of brake pads, clamps, brake lines, etc. The drum brake is a closed brake drum installed on the wheel, when the brake line pulls the brake lever, the brake pads in the brake drum will contact the wheel, generating friction to slow down until the stop. The drum brake is composed of brake drum, brake pad, brake rod, brake line, etc. 1
Heat dissipation performance: The heat dissipation performance of the disc brake is usually better than that of the drum brake. Because the brake pads of the disc brake are exposed to the air, the heat dissipation is better, and the brake performance will not be reduced due to high temperature. The brake pads of the drum brake are closed in the brake drum, and the heat dissipation is poor, which is easy to cause the brake performance to decline due to high temperature.
Maintenance cost: The structure of the drum brake is relatively simple, so the maintenance cost is low. In contrast, the structure of the disc brake is more complex, and the friction plate and lubricating oil need to be replaced regularly, so the maintenance cost is higher. 2
Braking effect and handling: The braking effect of the disc brake is usually better than that of the drum brake, especially in harsh environments. The heat dissipation performance of the disc brake is better, and the phenomenon of thermal decay caused by long-term braking is avoided. However, the disc brake cost is high, the maintenance is relatively complex, and the wear of the disc and brake pads is more sensitive. The advantage of the drum brake is that the braking effect is stable and less affected by the environment; The disadvantage is that the heat dissipation performance is poor, long-term braking may lead to thermal decay, and maintenance is relatively difficult. 3
In summary, the disc brake and drum brake each have their own advantages and disadvantages, which brake system to choose depends on the specific needs and budget of the user. The disc brake is suitable for applications requiring good thermal performance and high braking efficiency, while the drum brake is suitable for some cost-sensitive or specific working environments due to its simple structure and low cost.
