What is the friction material of the 4707 brake shoe assembly made of?

The friction material of the 4707 brake shoe assembly is usually made of a variety of materials with different compositions to ensure that it has excellent wear resistance, high temperature resistance and braking performance. The following are some common materials and characteristics about the friction materials of the shoe assembly, especially for the 4707 brake shoe assembly

Asbestos resin type friction material is one of the commonly used friction materials in the early days, but due to the potential harm of asbestos to human health, it has now been gradually replaced by other materials. Asbestos-free resin type friction material is an alternative to asbestos resin type material, which does not contain asbestos, is more environmentally friendly and harmless to the human body. The friction material of the 4707 brake shoe assembly may adopt this asbestos-free resin type material because it has good performance in wear resistance, thermal stability and braking performance.

Metal fiber reinforced friction material enhances the strength and wear resistance of the friction material by adding metal fibers. In some high-performance brake shoe assemblies, metal fiber reinforced friction materials may be used to improve braking performance and durability. Semi-metal fiber reinforced friction materials combine resin matrix and metal particles, and enhance the wear resistance and thermal stability of the material through the dispersion of metal particles. It is commonly used in heavy vehicles and brake shoe assemblies that require high wear resistance.

Hybrid fiber reinforced friction materials are hybrid reinforced with a variety of different types of fibers (such as glass fiber, carbon fiber, aramid fiber, etc.) to optimize friction performance, wear resistance and thermal stability. Hybrid fiber reinforced friction materials are more common in modern high-performance brake shoe assemblies.

For the 4707 brake shoe assembly, considering its wear-resistant and durable characteristics, asbestos-free resin-based friction materials may be used, and may be combined with metal fibers or hybrid fibers for reinforcement. In addition, the material formula of modern brake shoe assemblies is usually confidential, so the specific material composition may vary from manufacturer to manufacturer.

The friction material of the shoe assembly is a complex system. By selecting the right material formula and manufacturing process, it can ensure that the brake shoe assembly has excellent wear resistance, high temperature resistance and braking performance.