Gray cast iron brake drum for trucks: Gray cast iron
A high quality, OE replacement of brake drum for trucks.This replacement brake drum is made from premium material for optimum disc wear and manufactured to OE replacement design, fit and specifications for balance and reliability.
The scientific name of the brake hub is the brake drum, which is the main component of the drum brake system. The friction between the inner surface of the brake drum and the brake pads during the braking function. The brake drum is a cast iron piece shaped like a tambourine, which is fixed to the tire and rotates at the same speed.
1, Material:grey cast iron according to HT250(G3000)stardand;
2, Tensile strength:σb≥230N/mm²;
3, Casting hardness: HB180-240;
4, The matrix organization is flaky pearlite and the content is more than 90%;
Integral casting The brake drum is integrally cast from high-strength gray cast iron or alloy cast iron containing Cr. This brake drum has a simple structure, convenient processing, and large heat capacity, but has a large mass, and is mostly used for medium and heavy vehicles.
Combination of steel plate and cast iron The brake drum is composed of a steel plate stamped drum plate and a cast iron drum ring, which has a small mass and is mostly used for cars and light cars.
Combination of light alloy and cast iron The main body of the brake drum is a light alloy material (such as aluminum alloy), which is lined with a cast iron ring. This kind of brake drum is not only small in weight, but also good in heat dissipation, and is mostly used in cars.