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Reference in design and manufacture of slewing rings for your most demanding applications since 1969.

Our markets

The Defontaine Group, including its two brands, has been successful for nearly 80 years with more than 1,300 customers on 5 continents, where the concepts of quality, reliability, long-lasting products and operating costs are a priority.

Visioncreating sustainable value

The Defontaine Group creates long-lasting partnerships with its customers. This local support approach for our partners is based on 3 guiding principles.

Sustainable development

The Defontaine Group designs and manufactures effective products that can be recycled up to 99% for your future applications to build a healthier planet for our future. Our particularly low-carbon manufacturing processes support your efforts to improve carbon footprint. Our leading position in renewable energy and our investment in cleaner technologies for the future of transportation have been demonstrating our full commitment to this project for over 30 years.

New technologies

The Defontaine Group is investing in the development of the Factory of the Future with automated and connected technologies to improve product quality and reduce manufacturing costs. The group’s objective is to use artificial intelligence as a key component for future production. The Defontaine Group is working on designing instrumented mechanical parts and sub-assemblies to build an improved model for lifespan prediction and reduce operating costs.

Commitment to people

The 1,300 employees of the Defontaine Group pursue the same “key” objective: providing high quality customer service. They work together to develop a common objective: continuous improvement, with a firm commitment to the welfare and safety of others.

Our services

Defontaine is an international group where proximity with customers all over the world is a daily reality.

The employees of the Defontaine Group are at your side from product design to after-sales service, including manufacturing, logistics, providing advice on assembly in your workshop and spare parts in stock.
We expect our partnerships to be successful and promote the excellence of your products on the global market.

Our key processes

Roulé-soudé par étincelageFlash-butt welding
Usinage et rectification de précisionPrecision machining and grinding
Trempe sous pressePress quenching
Traitement thermique par inductionInduction heat treatment
Procédés spéciauxSpecial processes

Our partners

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logo ACCIONA
logo ALSTOM
logo DAIMLER
logo DMG
logo EDF
logo GE HEALTH
logo REFERENCE GE
logo HYUNDAI
logo IBERDROLA
logo KOMATSU
logo KONGSBERG
logo KUKA
logo MAN
logo MTU
logo PONSSE
logo RADIUS
logo ROLLSROYCE
logo RWE
logo SAFRAN
logo SCHAEFFLER
logo SIDEL
logo SIEMENS
logo VALEO
logo VESTAS
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