Brake shoes are used in most drum style brake systems. Bendix brake shoes are frequently used at each wheel. Heavy duty drum brakes are most commonly the S-cam drum brakes. Medium duty and automotive drum brakes use bendix brake shoes also but in a hydraulic system the function of the s-cam is performed by a wheel cylinder. Both the wheel cylinder and the s-cam are the mechanism used to spread the bendix brake shoes and force them to create friction against the drum to slow and stop the vehicle.
Bendix brake shoes are are located inside each brake drum on each end of the vehicle's axles. The wheels are bolted to the drums. The braking mechanism including the brake shoes is inside the drum. To stop, the brake shoes and linings are pushed against the inside of the drum. This causes friction which slows the vehicle. Too braking and use of the brake shoes may create too much heat and can cause brake failure. Bendix brake shoes.