Notable Ingredients Used in NAO Drum Brake Shoes

When it comes to the safety and performance of a vehicle, the braking system plays a crucial role. One of the key components of a drum brake system is the brake shoes. These shoes are responsible for pressing against the drum to create friction and slow down or stop the vehicle. In recent years, Non-Asbestos Organic (NAO) drum brake shoes have become increasingly popular due to their environmental friendliness and improved performance. Let’s take a closer look at some of the notable ingredients used in NAO drum brake shoes.

One of the primary ingredients used in NAO drum brake shoes is organic fibers. These fibers are typically made from materials such as aramid, glass, and carbon. Organic fibers are known for their high strength and heat resistance, making them ideal for use in brake shoes. These fibers help to provide the necessary friction between the brake shoe and drum, allowing for effective braking performance.

In addition to organic fibers, NAO drum brake shoes also contain a binder material. This binder helps to hold the organic fibers together and provide structural integrity to the brake shoe. Common binder materials used in NAO drum brake shoes include phenolic resins and rubber compounds. These binders play a crucial role in ensuring that the brake shoe maintains its shape and strength under the high temperatures and pressures generated during braking.

Another important ingredient found in NAO drum brake shoes is fillers. Fillers are added to the brake shoe compound to improve its wear resistance and thermal stability. Common fillers used in NAO drum brake shoes include silica, clay, and calcium carbonate. These fillers help to enhance the overall performance and longevity of the brake shoe, ensuring that it can withstand the rigors of daily driving.

In addition to organic fibers, binders, and fillers, NAO drum brake shoes also contain friction modifiers. These modifiers are added to the brake shoe compound to adjust the friction characteristics of the material. By fine-tuning the friction properties, manufacturers can ensure that the brake shoe provides optimal braking performance under a wide range of driving conditions. Common friction modifiers used in NAO drum brake shoes include graphite, molybdenum disulfide, and copper particles.

Overall, the ingredients used in NAO drum brake shoes are carefully selected to provide the best possible combination of performance, durability, and environmental friendliness. By using organic fibers, binders, fillers, and friction modifiers, manufacturers can create brake shoes that offer reliable stopping power while minimizing the impact on the environment. Whether you’re driving in stop-and-go city traffic or cruising down the highway, NAO drum brake shoes are designed to deliver consistent and dependable braking performance. So the next time you hit the brakes, remember the important role that these ingredients play in keeping you safe on the road.