Shear Gear with Locking C-Clip for Ammco Brake Lathes. Protect your investment with the Shear Gear. Engineered as a sacrificial mechanical fuse, this gear is designed to safeguard your brake lathe's delicate cross-feed gearbox from expensive internal damage. In the event of an operator error, jam, or overload during rotor machining, this gear is designed to shear off instantly, cutting power to the feed mechanism before the metal gears inside the transmission can be stripped or destroyed. Technical Features & Workshop Advantages: Sacrificial Fail-Safe Design: Acts as a protective barrier; the gear breaks under excessive stress so your expensive gearbox components don't have to. Precision-Molded Polymer: Manufactured to exacting OEM specifications to ensure it shears at the precise torq.