Altra Industrial Motion is a manufacturer of mechanical power transmission products - brakes, clutches, couplings, and the like. While the products sound automotive to the layman, in fact most Altra products are used on industrial machinery, such as fail-safe brakes for elevators and forklifts, gearboxes on conveyors, heavy duty brakes on mining equipment, clutches for beverage capping equipment, etc.
Altra is the parent company of several power transmission industry brands, including: Ameridrives, Boston Gear, Warner Electric, TB Wood's, Stieber Clutch, Twiflex, Matrix International and Wichita Clutch.
The company is headquartered in Braintree, Massachusetts. In 2005, they recorded sales of $748M USD.