Altra Holdings, Inc. is a Quincy, MA-based provider of mechanical power transmission and motion control products. Altra Holdings' product portfolio includes industrial clutches and brakes, enclosed gear drives, open gearing, couplings, engineered bearing assemblies, linear components and other related products that are used in a wide variety of high-volume manufacturing processes, where reliability and accuracy are critical in both avoiding costly down time and enhancing the overall efficiency of manufacturing operations.