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The brake drum is the friction couple of the drum brake on the automobile. In addition to the strength and stiffness required as a component, Baotou North Benz accessories should also have as high and stable friction coefficient as possible, as well as appropriate wear resistance, heat resistance, heat dissipation and heat capacity. In order to meet the driving needs, the design of automobile brake drum accessories shall meet the following requirements:

The brake drum is not designed properly, which is variable when heated; Unbalanced force on the brake drum will also produce mechanical deformation, resulting in poor contact between Baotou North Benz accessory shoe and the drum, resulting in increased pedal force and stroke; When the working surface of the brake drum is not too round, it will also cause self-locking, vibration and noise. Therefore, the brake drum shall have sufficient wall thickness and cast circumferential or axial reinforcement near the opening on the outer surface to improve the strength. These steel bars can reduce the temperature of the friction surface, shorten the cooling time of the brake, and increase the energy capacity by 35%-40%. After assembly with Baotou North Benz accessory hub, the working surface of the brake drum is positioned through the common bearing hole.

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