The drum brake is composed of a brake frame and an electric hydraulic pusher. When braking, the wheel cylinder piston pushes the brake shoe outward under the action of the brake fluid pressure, and the brake shoe overcomes the elastic force of the return spring. Open outward and press against the brake drum

The drum brake is composed of a brake frame and an electric hydraulic pusher. When braking, the wheel cylinder piston pushes the brake shoe outward under the action of the brake fluid pressure, and the brake shoe overcomes the elastic force of the return spring. Open outward and press against the brake drum

The brake drum is an important part of the automobile brake system, and its design and manufacturing quality directly affect the braking performance and safety of the automobile.

The brake drum working surface is generally finished with the bearing hole positioning after assembly with the hub. Mini cars require roundness and coaxiality tolerances of working faces ≤ 0.03mm, radial runout ≤ 0.05mm, and static unbalance ≤ 1.5N · cm.

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