The drum brake consists of two parts: a brake frame and an electric hydraulic pusher. When braking, the wheel cylinder piston pushes the brake shoe outward under the action of the brake fluid pressure, and the brake shoe overcomes the elastic force of the return spring. Open, press against the brake drum, and generate braking torque to brake the car. The working principle of the drum brake is to push the piston of the brake master cylinder to move when the brake pedal is stepped on, and then generate pressure in the oil, make it open outward and press against the brake drum to generate braking torque. The components of drum brakes include brake wheel cylinders, brake shoes, brake drums, friction linings, return springs, etc. Drum brakes are in the car field. It has been gradually withdrawn and is mainly used to brake rear wheels and parking brakes with relatively small loads. The working principle of drum brakes also includes the effect of self-increasing or self-decreasing torque. The friction of the leading shoe is from 2 to 2.5 times

12 - inch Trailer Brake Drums: Exceptional Braking Performance for Trailers

The 12 - inch trailer brake drums are a crucial part of any trailer’s braking system, offering reliable and efficient stopping power.

These brake drums are engineered with precision using high - quality materials. Usually, they are constructed from robust alloys or cast iron. The choice of such materials endows the drums with remarkable strength and durability. For example, cast iron is known for its ability to handle high levels of stress and heat. In the context of trailer braking, where significant forces are at play during deceleration, the 12 - inch brake drums made of these materials can endure without succumbing to wear and tear easily.

The 12 - inch size is specifically designed to meet the braking requirements of trailers. With a larger diameter, they provide a greater braking surface area. This increased surface area allows for more effective heat dissipation. As trailers may carry heavy loads or travel at high speeds, efficient heat dissipation is vital to prevent brake fade. When the brakes are applied, heat is generated, and the 12 - inch brake drums can quickly disperse this heat, ensuring consistent braking performance throughout the journey.

In terms of functionality, the inner surface of these brake drums is meticulously machined to a fine finish. This smooth surface promotes optimal contact with the brake shoes. The result is a smooth and even braking action, reducing the likelihood of jerky stops or premature wear of the braking components.

Installation of the 12 - inch trailer brake drums is made convenient. They are designed to be compatible with a wide range of trailer axles and braking systems. This compatibility simplifies the installation process for mechanics, saving time and effort.

These brake drums also adhere to strict safety and quality standards. Rigorous testing procedures are carried out to ensure that they can handle various operating conditions and loads, providing trailer owners with the peace of mind that their trailers will be able to stop safely and effectively when needed.