MERGER
Manufacturer and repairer of reducers, multipliers and speed variators
A world leader at your service
MERGER specializes in the design, manufacture and maintenance of speed reducers for complex handling and lifting systems for the nuclear, port, aeronautical, offshore, defense and heavy industries.
- Over 3 millions gearboxes installed
- Global presence
- 5 key activities: New standard catalog, new special, drop-in, repair, on-site service
- ISO9001 version 2015 certified factory
Services dedicated to industrial excellence
We specialize in on-site or drop-in interventions (replacing the existing reducer present on your industrial site).
Adapted to your service continuity needs:
Supervision of assemblies, laser alignment, vibration analysis, endoscopic and thermal analysis, preventive and curative on-site intervention, with documented reports after each intervention.
+ 75 years of experience
Remanufacturing and repair of all brands
A design office dedicated to specific requests
MERGER Products and Solutions: Our Quest for Mechanical Excellence
French expertise: Since 1947, MERGER has manufactured over 3,000,000 gearboxes and reducers. This experience allows us to find solutions to your specifications, addressing even the most complex power transmission needs.

Speed reducer

Angle transmission

Gearbox

Speed Multiplier

PIV variator

Analysis and maintenance
Experience in manufacture and maintenance processes for gearboxes
MERGER has expertise in the design and manufacture of gearboxes to meet your various industrial requirements and needs.
We handle all types of gearboxes and mechanical gear transmissions:
- The wheel and worm screw, the reducer with parallel and perpendicular shafts, the reducer with coaxial shafts, equipped with cylindrical gears or bevel gears, or cells for planetaries.
All solutions comply with the standards of demanding markets (nuclear, steel, chemicals, environment, etc.).
Standard Manufacturing
Custom Made
Remanufacturing of all brands
Repair of all brands
Preventive and curative maintenance
Diagnostics and Analysis
75 years of industrial expertise
MERGER manufactures and repairs speed reducers for many sectors of global industry . Our products are increasingly in demand across all industrial sectors.
MERGER is at the forefront of the industry with an installed base of over 3,000,000 gearboxes installed worldwide.
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MERGER has been manufacturing gearboxes, speed multipliers , and variable speed drives for the energy sector for over 70 years . We supply and repair, among other things, gearboxes used for polar couplings in the nuclear industry in France and internationally . We manufacture, install, and repair gearboxes for power generation from hydroelectric plants. We also produce gearboxes to facilitate oil extraction and refining.
We have developed expertise in the following areas:
- Oil extraction
- Nuclear Energy
- Hydro-Electricity
Some examples of equipment:
- Lifting bridge
- Polar bridge
- circulation pump
- Impeller
- Lock
- Guidance system
steel industry
The steel industry is a long-standing market for MERGER. Robust and reliable, our gearboxes and variable speed drives are designed to withstand the extreme operating conditions of foundries, rolling mills, industrial chrome plating plants, and wire drawing mills. As a manufacturer and repairer of gearboxes, we provide all the components and services that meet the most demanding requirements to guarantee optimal operational continuity.
We have developed expertise in the following areas:
- Foundry
- Hot rolling
- Metal transformation
- Chrome plating
- Wire drawing mill
Some examples of equipment:
- Conveyor (belt, flatbed, vertical)
- Rolling mill
- Wire drawing machine
- Roller table
- Overhead crane
- reel
Maritime
MERGER is present in a large number of applications in the maritime sector. We manufacture, repair and maintain speed reducers on overhead cranes, gantries , winches, cranes, lifting systems and marine equipment.
We have developed expertise in the following areas:
- Military ships
- Merchant ships
- Passenger ships
- Cargo and service vessels
- Port industry
Some examples of equipment:
- Windlasses
- Davit – launching boom
- Lifting bridge or drawbridge
- Handling gantry
- Winch system
- Mobile crane
chimie
MERGER develops gearboxes and speed variators capable of handling very high axial force and torque levels to meet the specific needs of the chemical industry. Our expertise in the design and maintenance of gear systems for extruders , crushers , and rubber rolling mills provides a reliable solution for the chemical and petrochemical industry.
We have developed expertise in the following areas:
- Rubber industry
- Plastics industry
Some examples of equipment:
- Crushers
- Extruder
- Rubber rolling mill
- Tire machine
- Mixing or plate rollers
Mines and quarries
Present on several continents, including Europe and Africa , MERGER has been supplying speed reducers and related services for over 50 years. Our products are widely used in drilling , conveying , crushing and mining applications.
We have developed expertise in the following areas:
- Mining Extraction
- Tunnel and drilling
- Grinding
Some examples of equipment:
- Ball mill or coal mill
- Tunnel boring machine
- Handling mats
- Mine fan
- Pocket elevator
- Excavator
tourism
MERGER can provide comprehensive answers and tailored solutions to companies specializing in passenger transport , thus helping to ensure the safe, reliable and efficient operation of their facilities.
We have developed expertise in the field of ski lifts.
Some examples of equipment:
- Funicular
- Chair lift
- Cable car
- Rack railway
- Teleskies
paper industry
MERGER manufactures speed reducers and variators for the paper and pulp industry. Our solutions address all your mechanical transmission needs for speed, torque, and power with customized solutions.
We have developed expertise in the following areas:
- Paper industry
- Cellulose industry
Some examples of equipment:
- Press
- Drums
- Paper machine
- Reels
- Winding machine
- Pulpers
Environment
Since the 1960s, MERGER has been supplying incineration plants with speed reducers and variators. Our expertise also allows us to meet the needs of those involved in waste sorting and water treatment.
We have developed expertise in the following areas:
- Incineration plant
- Waste recycling / sorting center
- Wastewater treatment plant
Some examples of equipment:
- Conveyor
- Crushers
- Crane lifting with grapple
- aerator
- Overhead crane
- reel
MERGER: The transmission of an idea
Genesis: A speed reducer allows you to modify the speed of an electric motor by adapting the characteristics of the input and output shaft. Thus, this product allows you to increase the torque: the maximum and minimum torque supported is expressed in newton-meters (Nm).
As usage constraints have evolved, choosing a speed reducer is no longer simply a matter of consulting a catalogue.
MERGER , one of the leading European manufacturers of motorization components, is committed to involving its engineers and technicians with your design office to better guide your selection towards the most suitable speed reducer.
In addition to manufacturing a very complete range of speed reducers, MERGER also produces industrial gearboxes, as well as any special reducer and multiplier for very specific and diverse applications.
We specialize in repairing all brands: ACMI, BENZLER, BRAMPTON-RENOLD, BREVINI, CATEP, CITROEN MESSIAN, CLECIM, COUPE HUGOT SURETEX, CMD, COMELOR, DANFOSS, DANIELLI, DAVID BROWN, DEMAG, DODGE, ELLI, FALK, FENNER , FLENDER, FOC, GIRARD, GUIBE, HANSEN, JAHNEL-KESTERMANN, KISSLING, KRUPP, LUFKIN, MERGER, METSO, NORD REDUCTEUR, PEKRUN, PIV, PUILLES FRERES, PTP, REGIANNA, RENOLD, ROSSI, SANTASALO, SAWA, SEW, SUMITOMO , THYSSEN, WECO, WEG, ZOLLERN…; and all parts: casings, shafts, pinions, couplings, gears, covers, inspection hatches, bearings, seals, etc.
You have a project, need to replace your equipment, you can send us your specifications, the serial number of your equipment or a photo of your installation so that we can guide you.
Our news
We manufacture and repair medium and high capacity reducers with straight, inclined or helical teeth, with cast iron or steel housing, speed multipliers, gearboxes, hollow shaft reducers, reducers and gearmotors, worm reducers and gearmotors, speed variators (PIV), electric motors, couplings, special reducers and multipliers transmitting torques up to 1 Nm for all new industrial projects or in interchangeability with all brands.
Stay up to date with the latest MERGER news.
MERGER at the Business Hydro 2026 trade show: supporting the new ambitions of hydropower
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The MERGER story: From 1947 to the present day
KEY DATES From its founding in Strasbourg in 1947 until its...
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On June 10th and 11th, the ecosystem of the small and...



