Brake shoe

Brake Shoe

A brake shoe is a component of the braking system in many types of vehicles, including cars, trucks, and trains. It is a curved piece of metal with a high-friction material called a brake lining attached to its surface. The brake shoe is a critical part of the drum brake system, which is one of the two main types of brakes used in vehicles, the other being the disc brake system.

Function

The primary function of the brake shoe is to generate friction. When the driver applies the brakes, the brake shoes are forced against the inside of the brake drum. This contact creates friction, which slows down the rotation of the wheels and brings the vehicle to a stop. The brake lining on the shoe is designed to withstand high temperatures and provide consistent performance over time.

Types of Brake Shoes

There are two main types of brake shoes: leading and trailing. The leading shoe has its leading edge facing the direction of rotation. When the brakes are applied, the rotation of the drum pulls the leading shoe into it, increasing the braking force. The trailing shoe, on the other hand, has its leading edge facing away from the direction of rotation. It provides less braking force than the leading shoe.

Materials

Brake shoes are typically made from steel, which is strong and durable. The brake lining can be made from various materials, including asbestos, semi-metallic compounds, and organic compounds. Each type of material has its own advantages and disadvantages in terms of performance, durability, and environmental impact.

Maintenance and Replacement

Over time, the brake lining on the shoe wears down and needs to be replaced. This is a common maintenance task for vehicles with drum brakes. It's important to replace brake shoes in pairs to ensure balanced braking. If the brake shoes are not replaced in a timely manner, the metal of the shoe can come into contact with the drum, causing damage and reducing braking efficiency.

See Also

• Brake pad
• Brake disc
• Brake fluid
• Brake lining