American Autogard
Ameridrives (Zurn)
Andantex
Bison Gear
Boston Gear
Brewer
Browning
David Brown
Diamond Chain
Dodge
Drives, Inc.
Duff Norton
Electra Gear
Electroid Co.
Falk
Fenner Drives
Foote-Jones/Illinois Gear
Formsprag
Gates Rubber Company
Globe Gear
Goodyear
Grove Gear
Hansen Couplings
Hi-Lo Manufacturing
Hitachi
Hub CIty
Jason Industrial
Jeffrey Chain
Kop-Flex
Link-Belt
Linn Gear
Mac Chain
Martin Sprocket & Gear
Maurey Mfg.
Mayr
Micron
Moline
Morse
Nexen Group
Ohio Gear
PIC Design
Ramsey Products
Reeves
Rexnord
Ruland
SEW-Eurodrive
Stober Drives, Inc.
Stock Drive Products
Sumitomo
TB Wood's
Tol-O-Matic
Torque Transmission
Union Gear & Sprocket
U.S. Tsubaki, Inc.
Van Gorp
Von Ruden
Winsmith
Zero Max