Altra Industrial Motion Corp. designs, produces, and markets a range of electromechanical power transmission motion control products for use in various motion-related applications, and high-volume manufacturing and non-manufacturing processes.

The company operates in two segments, Power Transmission Technologies (PTT) and Automation & Specialty (A&S).

The PTT segment offers couplings, such as gear couplings, diaphragm and disc couplings, elastomeric couplings, miniature and precision couplings, universal joints, mill spindles, and shaft locking devices under the Ameridrives, Bibby, Guardian, Huco, Lamiflex, Stromag, and TB Wood's brands; clutches and brakes under the Industrial Clutch, Formsprag, Stieber, Stromag, Svendborg, Twiflex, and Wichita brands; electromagnetic clutches and brakes under the Inertia Dynamics, Matrix, Stromag, and Warner Electric brands; and gears under the Bauer Gear Motor, Boston Gear, Delroyd, and Nuttall brands.

The A&S segment provides rotary precision motion solutions, including servo and stepper motors, precision linear actuators, and electronic drives and motion controllers, as well as related software under the Kollmorgen brand; and miniature motors, and motion control products, such as brush and brushless DC, can stack, and disc magnet motors under the Portescap brand.

This segment also offers linear bearings, guides, glides, lead and ball screws, industrial linear actuators, resolvers, and inductors for the transition of rotary motion to linear motion under the Thomson and Nook brands.

It serves in North America, the rest of Europe, Germany, China, the rest of Asia, and internationally.

The company was formerly known as Altra Holdings, Inc. and changed its name to Altra Industrial Motion Corp. in November 2013.

Altra Industrial Motion Corp. was incorporated in 2004 and is headquartered in Braintree, Massachusetts.

As of March 27, 2023, Altra Industrial Motion Corp. operates as a subsidiary of Regal Rexnord Corporation.