Services - Open Gearing
- Arrow Gear Company
- Abundant Manufacturing, Inc.
- Artec Machine Systems
- Midwest Gear Corporation
- B&R Machine and Gear Corporation
- Buffalo Gear, Inc.
- C-B Gear & Machine, Inc.
- Carnes-Miller Gear Co., Inc.
- Clarke Engineering, Inc.
- Clifford-Jacobs Forging Co.
- First Gear Engineering & Technology
- Fairfield Manufacturing Co., Inc.
- Forest City Gear
- Gear Manufacturing, Inc.
- Gear Motions, Inc.
- Havlik International Machinery, Inc.
- High Performance Gear
- Innovative Rack & Gear Co, Inc.
- Ka-Wood Gear & Machine Co.
- KISSsoft U.S.A., LLC
- Lawler Gear Corp.
- Midwest Gear Corp.
- Moore Gear & Manufacturing Co., Inc.
- Niagara Gear Corporation
- Nixon Gear, Inc.
- Oliver Gear, Inc.
- P & G Machine & Supply Co., Inc.
- Parker Industries, Inc.
- Perry Technology Corp.
- Perry Tool & Research, Inc.
- Quality Transmission Components
- R.T. Blackhawk Machine Products, Inc.
- Raycar Gear & Machine Co.
- STD Precision Gear & Instrument, Inc.
- The Gear Works - Seattle, Inc.
- United Gear & Assembly, Inc.
- Gerhardt Gear Co.
- McCullough Industries, Inc.
- mG miniGears
- OEM Industries, Inc.
- Allied Sinterings, Inc.
