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Slewing rings for the wind power market

Unique expertise in renewable energy

Rollix, world leader in the design and manufacture of slewing rings for wind turbines

Rollix is the world’s leading supplier of blade and nacelle rings, and equips one in four wind turbines: from small onshore wind turbines of 20 kW to the latest generation of 15 MW offshore wind turbines.

Since 1980, Rollix has been working with wind turbine manufacturers and independent power producers to provide custom-made solutions. Rollix created the first blade rings, and has developed unrivalled experience and expertise in the wind power industry.

  • 248,000 rings in operation
  • 145 GW of installed capacity
  • 11.2 GW offshore
  • 21% of wind turbines worldwide equipped with Rollix rings up to 6 metres in diameter

Blade and nacelle bearings: from small urban wind turbines to multi-megawatt wind farms

Rollix slewing rings are delivered worldwide from our production site in France. Our production lines are specifically dedicated to wind power and are audited and certified by our customers, as well as by end users including energy operators. 

At Rollix, our high standards guarantee reliable, high-precision blade and nacelle bearings. Our production processes are continuously improving, our components undergo an extensive inspection and our suppliers are chosen based on a strict selection procedure.

We apply continued investment in research and development and in our production facilities to produce large  blade bearings of over 6 metres in diameter.

éolienne offshore siemens équipée de produits rollix

Our certifications for the wind power market

Design office specialised in wind power for optimum performance

At Rollix, we adapt and develop our range of slewing rings according to the changing needs and constraints of the wind power market. In close collaboration with our customers, our design office, specialising in wind power, aims to test and design high-quality blade bearings for blades and nacelles:

  • Optimised design over the entire product lifespan
  • Finite element calculations
  • Tests on rolling elements, sealing, lubrication
  • Dynamic test benches up to 20 MW

For prototyping or mass production, our team of specialised engineers will provide assistance for your projects and optimise the design of your rings.

banc essai Rollix eolien
Defontaine Group wind turbine test bench

Rollix, Spares and Services

Need to have a ring inspected? A seal replaced? Or a quick delivery? We offer a complete range of services for preventive and corrective maintenance.

In-situ inspection and maintenance by our qualified technicians

Sale of spare parts

Slewing rings available from stock

Dedicated logistics service for worldwide deliveries

Are you looking for quick, complete service and quality?

Do you need a custom-made product?

Rollix, the slewing ring expert

site de production defontaine rollix

Rollix is a French designer and manufacturer of specific slewing rings and bearings from 100 mm to over 6,000 mm in diameter, with or without gear, since 1969.

With 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 wind turbine manufacturers and independent energy producers, providing expert advice and guidance in the design and manufacture of your blade and nacelle 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?