8235-2210V7536
Brake Cam
Mack

The Brake Cam is a fundamental drum brake actuating component that converts motion from the wheel end into brake shoe pressure. As the cam rotates, it leverages mechanical advantage to push the brake shoes outward, creating the necessary friction against the drum for effective stopping power. Key attributes include hardened steel construction for wear resistance, precise geometry to ensure uniform shoe expansion, and lubrication points that minimize scuffing and heat buildup during repeated cycles. Proper alignment and periodic inspection prevent uneven wear and improve overall braking efficiency. The cam’s durability under heavy loads and exposure to road contaminants is critical in maintaining predictable braking performance across long hauls and tough terrain. Routine maintenance, including correct lubrication and secure mounting, helps maximize service life and reliability. Source One Parts Center.