Types and Characteristics of Drum Brake Hubs and Disc Brake Hubs
Drum Brake Hubs
Advantages:
Simple structure and low manufacturing cost.
Convenient for installing parking brakes.
To achieve the same braking torque, the diameter of a drum brake hub can be smaller than that of a disc brake rotor, allowing installation within the limited space of wheel rims. Therefore, it is commonly used for the front and rear wheels of medium and heavy-duty trucks, as well as the rear wheels of some specific vehicle models.
Disadvantages:
Moderate stability and braking efficiency.
Generates significant heat due to friction during braking, with poor heat dissipation, prone to brake overheating.
Components are enclosed within the drum, making maintenance and repair relatively difficult.
Disc Brake Hubs
Advantages:
Stable braking efficiency and relatively compact size.
Easy to achieve automatic clearance adjustment, simplifying maintenance.
During vehicle operation, dirt and gas are thrown out, less likely to enter between the disc and pads to affect braking performance.
Disadvantages:
Relatively lower braking efficiency, with certain limitations in rear-wheel applications.
Exposed to dusty environments, where dust can easily enter between the disc and pads, leading to wear on the brake disc.
