ZI du Cheix 23300 Saint Agnant de Versillat
contact@ressorts-dury.fr
05 55 89 69 00
Engineering and Special Machinery
Engineering & Special Machines
Custom springs for your most ambitious designs
The spring partner for your custom engineering projects
For more than 60 years, Ressorts Dury has been supporting engineering offices, integrators and special machine manufacturers. Our expertise in the design and manufacture of technical springs allows us to meet the most complex specifications, even for one-off or pre-production parts.
Our springs equip a wide range of equipment: automated assembly lines, test benches, specific tooling, prototypes, packaging machines and robotic systems. Every project is unique, and our responsiveness makes the difference.
Responsiveness and flexibility to meet your deadlines
In engineering and special machines, every project has its own deadline and performance constraints. At Ressorts Dury, we meet these requirements through:
- The manufacturing of single units or small batches with the same level of quality as large-series production
- Short lead times – the majority of our springs are designed, manufactured and delivered within 48 hours
- An integrated engineering department capable of co-developing your parts from a simple sketch or 3D model
- Complete technical documentation (definition drawings, material certificates, inspection reports)
Complete mastery of materials and processes
We master the processing of a wide range of materials to meet all mechanical, thermal and environmental constraints of your machines:
- High-performance alloy steels (chrome-silicon, chrome-vanadium) – fatigue and dynamic loads
- Stainless steels (302, 316, 17-7 PH) – corrosive environments, food-grade, clean rooms
- Non-ferrous alloys (bronze, brass, Inconel) – high temperatures, non-magnetism, conductivity
- Special wires and strips – complex shapes, wire-formed parts, custom flat springs
Each spring benefits from adapted heat and surface treatments (shot peening, passivation, special coatings) ensuring optimal service life, even in the most demanding industrial environments.
Why choose Ressorts Dury for your special machines?
Exceptional responsiveness – the majority of our springs are designed, manufactured and delivered within 48 hours. An integrated engineering department for the co-development and optimization of your parts, from the prototype stage onwards. A single dedicated point of contact for each project. More than 60 years of experience serving designers of special machines and equipment.