- Bison
- Bodine Electric
- Bonfiglioli
- Boston Gear
- Brother (Nissei)
- Cone Drive
- Cleveland Gear
- David Brown/Radicon
- Demag
- Dorris
- Dresser-Powertech
- Electra-Gear
- Eurodrive/SEW
- Falk
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- Foote Jones
- Grant Gear
- Groschopp
- Grove Gear
- Hub City
- Lenze
- Motovario
- Nord Gear
- Ohio Gear
- Speedtronics
- Sterling
- Sumitomo
- U.S. Motors
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