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Slewing rings for the rail and exceptional transport industry

Supplier to the world's leading transport manufacturers for 40 years.

Rollix provides global expertise in the transport sector

Rollix is a division of the Defontaine Group and manufactures slewing rings for transport applications. Rollix slewing rings transport millions of people around the world by train, tram and metro.

Rollix slewing rings are used to orientate the bogies. The stress spectrum applied to these slewing rings is very particular. Therefore, our expertise is based on extensive technical know-how.

Our design is perfectly suited to the protection of environments (salt, sand, rain and mud). We can also integrate special casing and braking devices.

We also supply slewing rings and worm gears with a specific compact design for the self-propelled modular transporter. Rollix produces special slewing rings for road trailers for trucks.

  • Trains, trams and metros equipped on 5 continents
  • Thousands of slewing rings installed each year
  • Partner of Alstom Group

Rollix engineering for your slewing ring projects

Rollix’s design and engineering departments offer innovative and customised solutions to meet the needs of customers in the transport sector. Our technical expertise and our products have proven successful over many years and provide the lowest life cycle costs on the market.

We use state-of-the-art calculation software and finite element analysis. 

Each product manufactured by Rollix is studied by our design office. We offer an adapted and specific solution based on the technical analysis of your specifications. We offer long-term lubrication solutions for every project. An automatic lubrication system is also available to maximise the lifespan of your slewing rings.

tramway béneficiant de l'ingénierie rollix

Rollix products

couronnes d'orientation ingiénerie rollix

Rollix specialises in slewing rings for rail transport. We offer slewing rings for trams and metros, allowing the carriages to follow the curves of metro, tram or train lines.

We also equip major airports around the world. We build slewing rings for airport vehicles designed to move aircraft on the runway, transfer baggage or carry out maintenance operations. They are adapted for continuous flow and airport standards to optimise operating costs.

Our long-lasting rings are known for their reliability. Standard rings are available from our online catalogue. We can also supply specific or painted slewing rings. We develop solutions to meet the specific requirements of customised projects.

We equip self-propelled modular transporters with slewing rings above each wheel, in shipyards for example.

The lifespan of our parts is maximised based on our expertise in lubrication and the specific surface treatments applied during the manufacturing process. Some rings are designed to last 40 years.

Are you looking for heavy load slewing rings?

Rollix, the slewing ring expert

site de production defontaine rollix

Rollix is a French manufacturer, designing and manufacturing slewing rings since 1969.

With over 95% of our production exported to over 65 countries, we offer innovative solutions and parts designed specifically for your application.

Rollix is a most valued partner of tram, train and metro manufacturers, providing expert advice and guidance in the design and manufacture of your slewing rings.

We are at your side to optimise your performance.

Associated services

& design



& Services


We have set up specific services to guarantee the quality of our products and the satisfaction of our customers throughout our exchanges.

Deadline constraints, technical challenges, secure deliveries, guaranteed lifespan of parts… the services of the Defontaine Group facilitate our collaboration.

Do you need special guidance?