Brake Lining Drum Brake Shoe

A brake lining drum brake shoe is an essential component of a drum brake system, designed to provide friction and deceleration when applied to the rotating drum. These brake shoes are typically made of a metal base (usually steel) that holds a friction material lining. The friction material can be made from various compounds, including organic, semi-metallic, or ceramic, depending on the application and performance requirements.
When the brake pedal is pressed, hydraulic pressure is sent to the wheel cylinders, which push the brake shoes outward against the drum. This contact creates friction, slowing down the rotation of the wheel and bringing the vehicle to a stop. Over time, the friction material wears down, which is why brake shoes need to be replaced periodically.
Key Features:
Friction Material: The lining is typically made from a blend of materials that are engineered to handle high temperatures and stress while maintaining consistent braking performance. The material can vary depending on the application, with organic compounds being softer and quieter, while semi-metallic and ceramic materials offer superior performance in extreme conditions.
Steel Backing Plate: The steel backing plate provides the structural strength for the brake shoe, ensuring it maintains its shape and integrity under the pressure of braking. The backing plate also provides mounting points for the brake shoe to attach to the brake assembly.
Design and Shape: Brake shoes are generally curved to match the shape of the drum. Their design ensures that the force from the wheel cylinders pushes evenly against the drum’s inner surface. The shoe’s radius is designed to provide optimal braking efficiency and wear characteristics.
Adjusters and Springs: Many brake shoes come equipped with adjusters and springs, which help maintain proper clearance between the shoe and drum. The springs retract the shoes when the brake is not engaged, while adjusters compensate for wear over time, ensuring consistent braking performance.