| Advanced Energy Conversion, LLC 10 Hermes Road - Suite 500 Ballston Spa, NY,12020 US | Machine Controller | |
| Advanced Micro Systems, Inc. 29 River Rd - Suite B Essex Junction, VT,05452 United States | Motion Controller , Stepper Drive | |
| Advanced Motion Controls 3805 Calle Tecate Camarillo, CA,93012 USA | Servo Drive Amplifier | |
| Advantage Group, Inc. 3221 Highland Ave., N.E. Hickory, NC,28601 USA | Repair | |
| Advantech Co Ltd 38 Tesla - Suite 100 Irvine, CA,92618 US | HMI Software | |
| AdvanTech International 615 Pierce Street Somerset, NJ,08875 USA | Linear Motion | |
| AEG-Lafert Electric Motors ltd Business & Technology Centre Radway Green, Crewe,Cheshire, ,CW2 5PR UK | Servo Motor | |
| Aeroflex Motion Control Products 350 Kennedy Drive Hauppauge, NY,11788 USA | DC Motor | |
| AGI Automation Components 171 Spring Hill Road Trumbull, CT,06611 United States | Pneumatic | |
| Agile Systems, Inc 575 Kumpf Drive Waterloo, ,N2V 1K3 Canada | Motor Control | |
| Agilent Technologies 5301 Stevens Creek Blvd. Santa Clara, CA,95051 United States | Wireless Networking | |
| Air & Hydraulic Power, Inc. Box 159 Wyckoff, NJ,07481-0159 US | Hydraulic , Pneumatic | |
| Air Engineering and Supply 2719 East Franklin Avenue Minneapolis, MN,55406 USA | Pneumatic | |
| Airline Hydraulics Corporation 3557 Progress Drive Bensalem, PA,19020 US | ||
| Airtrol Components, Inc. 17400 West Liberty Lane New Berlin, WI,53146 USA | Pneumatic | |
| Al-Tek (formerly Airpax Instrument) 3505 Cadillac Ave - Bldg E Costa Mesa, CA,92626 US | Hall Effect Sensor | |
| Alacron Inc 71 Spit Brook Rd, Suite 200 Nashua, NH,03060 USA | Machine Vision | |
| Allegro MicroSystems, Inc. 115 Northeast Cutoff Worcester, MA,01606 USA | Integrated Circuit | |
| Allenair Corporation 255 East Second Street Mineola, NY,11501 USA | Hydraulic , Pneumatic | |
| AllMotion, Inc. 5501 Del Oro Court San Jose, CA,95124 USA | Servo Motor , Stepper Motor | |
| Altair Industries, Inc. 217 Racquette Drive Fort Collins, CO,80524 USA | Machine Vision | |
| Amacoil, Inc. 2100 Bridgewater Road Aston, PA,19014 US | Linear Motion | |
| American Robot Corporation 303 Robinson Road Imperial, PA,15126 USA | Robotics | |
| American Society of Mechanical Engineers Three Park Avenue New York, NY,10016 USA | Mechanical Component | |
| Amerigo Tech. Ltd. 1078 E. 37TH Ave. Vancouver, ,V5W 1G3 Canada | Brushless DC Motor | |
| Ametek 627 Lake Street Kent, OH,44240 USA | DC Motor | |
| AMK Drives and Controls Inc. 5631 S. Laburnum Ave. Richmond, VA,23231-4418 USA | Servo Motor | |
| Amphenol-Sine Systems Corp 44724 Morley Drive Clinton Township, MI,48036 US | Cable | |
| Amtech Drives Inc 3852 Oakcliff Industrial Court Doraville, GA,30340 USA | Power | |
| Anacon Systems, Inc. 148 Double Eagle Austin, TX,78738 US | Variable Frequency |








