- Emerson Power Transmission
 - Makes power transmission drives, components, and bearings. - Nord Gear
- Offers power transmission drives and gears including helical, helical bevel and worm, shaftmounted, and other drive products.
- General Polygon Systems
- Providers of advanced mechanical connections for power and motion transmissions.
- Bowers Transmissions
- Offering new and rebuilt transmissions, converters, axles, differentials, and more.
- Bonfiglioli Group Power & Control Solutions
- Bonfiglioli designs, manufactures, and markets products and systems for power control and power transmission applications. Multinational organisation with a worldwide network of branches that are not just sales offices, but enterprises fully operative in their respective marketplaces.
- Bearings & Industrial Sales, Inc.
- Bearing and power transmission specialists.
- Maska
- Manufactures industrial cast iron sheaves or V-belt pulleys, QD and taper lock bushings, V-belts, metric synchronous timing pulleys, QD sprockets, and related power transmission products.
- PowerTransmission.com
- Manufacturers and suppliers of power transmission products.
- ZF Friedrichshafen AG
- Develops and produces transmissions, steering gears, axles, and chassis components as well as complete systems for passenger cars, commercial vehicles and off-road machinery.
- Twin Disc
- Designs, manufactures and sells heavy duty off-highway power transmission equipment for the construction, industrial, government, marine, natural resource and agricultural markets.
- Ameridrives International
- Manufacturer of mechanical power transmission products, including gear spindle and diaphragm couplings, universal joints, clutches, brakes, and gearboxes.
- Andantex USA, Inc
- Mechanical power transmission products, including various differentials, right-angle spiral-bevel gearboxes, servo reducers, multispeed/reversing drives, racks & pinions.
- HIC International
- Manufactures UNIVERSAL brand material handling, power transmission, hydraulic, pneumatic, and mill machinery products including conveyor belts, idlers, pulleys, valve, and rubber sheets.
- Belden Incorporated
- Universal joint, couplings and gear box manufacturers. Offers price quotes and catalogues.
 Bibby Transmissions Group
- Provide flexible couplings, torque control parts and limiters, gears, and flange types.- Falk Corporation
- Manufactures a broad range of standard gear drives, custom-engineered gear drives, shaft couplings, large open gear sets, and alloy steel castings.
- Gear Products
- Manufactures slewing ring bearings, worm gear winches, swing drives, planetary winches.
- All Power Transmission
- Makers of couplings, expansion shafts, flanged shafts, flexible shafts, float shafts, universal joint shafts, and more.
- Johnson Power
- Designs and manufactures universal joint drive shafts as well as flexible disc and gear couplings. Serving the wastewater, papermill, and steelmill industries.
- Shackelford-Wattner
- Manufactures gear, dry, and disc couplings. Offers inspection and repair services.
- Hangzhou Advance Gearbox Group Co.
- Manufacturers of power transmission parts for the marine, construction, industrial, and automotive markets.
- Stober Drives Inc.
- Manufacturers high efficiency constant and variable speed transmissions.
- Multi Products
- Manufactures AC & DC electric fractional horsepower gear motors. Also a full service gear cutting facility; gear or gear motors can be custom made.
- Flender Corporation
- Manufacturing and service for speed reducers, planetary and worm gear units, extruder drives, modular gearmotors, hydraulic motors, and couplings.
- Blue Diamond Limited
- Distributors of bearings, oil seals, o-rings, gaskets, and related power transmission products.
- Boneng Transmission
- Specialises in the manufacture and development of power transmission gear drives, reducers, screw jacks, and more.
- Engrenages HPC
- Offers mechanical components and industrial supplies including gearboxes, motors, bearings, screws, springs, and gears.
- AutoGard
- Manufacturer and distributor of metal membrane couplings, elastomeric couplings, and torque limiters.
- Marine and Industrial Transmissions, Ltd.
- Specialists in marine transmissions, twin disc products, quincy air compressors, transfluid fluid couplings, and clutches.
- Torque Transmission
- Manufacturing company offering timing pulleys, right angle gearboxes, and thrust bearings for low and fractional horsepower application. Torque Transmission features plastic and metal products with custom products available.
- Tuff Torq Corporation
- Manufacturer of hydrostatic and gear drive transmissions for the lawn and garden power equipment industry.
- Ohio Gear & Transmission
- Distributor of power transmission equipment and motion control systems.
- Xtek
- Manufactures custom machined and heat-treated parts and component assemblies to solve the toughest power transmission and material handling equipment problems.
- London Bearings (Kent) Ltd
- Independent U.K. distributor of bearings and power transmission equipment.
- Matex Co.
- Manufactures mechanical components, epicyclic and planetary gears, reducers, gearboxes, and actuators for use in electrical appliances and healthcare instruments including massage chairs.
- Emco Lenze Pvt. Ltd.
- Makers of industrial brakes, clutches, and other motion control products.
- Northern Industrial Supply
- Provider of primarily power transmission products and services to manufacturers located in Eastern Michigan.
- System Components, Inc.
- Providing a range of standard and custom-designed couplings.
- Holland Supply Company
- Specialise in the sale of industrial power transmission products and rebuilding AC and DC electric motors.
- Vulkan Industries Ltd.
- Provides a range of flexible couplings for marine, transportation, and industrial transmissions.
- European Spare Parts Service, Inc.
- Importer of power transmission equipment, hydraulic and pneumatic valves and cylinders, electrical controls and devices, and more.
- Hydro-Mechanical Systems
- Authorised Dana Spicer Clark-Hurth service centre. Also provides starting systems for gas turbines.
- U.S. Transmissions, Inc.
- Providing rebuilt exchanges and overhauls for all industrial transmissions from Allison and other manufacturers.
- Sewart Supply
- Provides propulsion products and services to all segments of the marine industry.
- TechnASales
- Software for: product sizing and selection, catalogues on disk, fluid power, hydraulics and pneumatics.
- Textron Power Transmission
- Offers double-enveloping gear sets and boxes, speed reducers, servo motor motion control, and power transmission solutions for any industry.
- Flowserve: Power Transmission Couplings
- Offers Samiflex, Autoflex, and Microflex power transmission couplings featuring polyurethane reliability and a flexible elastic element applied in ANSI equipment.
- Chu Sheng
- Offers speed reducers, low backlash planetary gearboxes, servo motors, precision mechanical transmission parts and components, and more.
- Kinematics Manufacturing
- Manufacturer of planetary winches, slewing drives, and other OEM drive components for worldwide distribution. Free product catalogue available.
- Motionco
- Mechanical drive components from stock, including pulleys, belts, sprockets, chain, gears, shafts, bearings, and fixings. Motionco is based in the U.K.
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