HOWO Truck Parts Rear Brake Drum AZ911340006

The brake drum is part of the drum brake system. When braking, the piston applies pressure to the two pairs of half-moon brake shoes to make it adhere to the inner wall of the drum, thereby generating friction to stop the rotation of the wheel. The material of the brake drum is generally...

Product Details

The brake drum is part of the drum brake system. When braking, the piston applies pressure to the two pairs of half-moon brake shoes to make it adhere to the inner wall of the drum, thereby generating friction to stop the rotation of the wheel. The material of the brake drum is generally HT200-300 (ie gray cast iron). The matrix structure is mainly pearlite and a small amount of ferrite and cementite. The graphite is mainly grade A, the shape is long and the length is 4 Grade -6, which plays a role in heat dissipation, increased friction performance and reduced brake noise. Because it is cast iron, it is wear-resistant, but it is brittle after all. If it encounters aging, it may break.


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