Precision turning, our core business

UND is a major player in the precision turning market in France. Over half a century, we have built up a wealth of experience and expertise in this field, enabling us to manufacture complex parts in a variety of materials to a high level of quality. This culture makes us the subcontractor of choice for players in the luxury goods, connectors, watchmaking, medical, aeronautics and aerospace industries.

Our precision comes from combining human skills with high-performance machinery

UND's technical expertise in precision turning to manufacture complex parts is the result of a combination of two factors: high-performance machinery and essential human skills. From prototyping to small, medium and large-scale production, the quality of the result is the result of combining the skills of our bar turners with cutting-edge tooling.

Diameters between 0.3 and 51 mm

Traditional machining on cam-type lathes

UND has a fleet of 38 cam-operated lathes on which we precision-machine material bars with diameters ranging from 0.6 to a maximum of 10 mm. These lathes are used for mass production of parts that are not complex in nature.

A cam manufacturing workshop

We have our own cam manufacturing workshop in Franois. This service gives our production facilities a rapid response.

Digital lathes for complex parts

UND's bar turning business is spread over 5 production sites. In all these workshops, we have deployed a machine park consisting mainly of numerically controlled lathes capable of machining all diameters between 0.3 mm and 51 mm. These lathes enable us to machine complex parts in small, medium and large production runs with micrometric precision.

Around 100 skilled and committed employees

UND employs around 100 people, the majority of whom are bar-turning technicians with a perfect command of their production tools. Their experience and technical skills are assets when it comes to interpreting drawings. Thanks to this shared knowledge, we can offer our customers optimized manufacturing solutions for complex parts. 
The technical culture that is passed on within UND is one of our strengths. Training is central to our operations.

Nos offres en cours

We machine all materials

In its bar-turning workshops, UND is able to manufacture parts in small, medium and large production runs, in a variety of materials depending on customer requirements and the intended use of the parts.
For example, we machine with great precision bars from raw materials such as stainless steel and other steels, titanium, brass, copper, plastics and composite materials.

Traceability of materials

UND guarantees the origin and traceability of the materials we process. This transparency is in line with the demands of our customers, who place their trust in us.

You'll appreciate our responsiveness

Our size and organisation are the keys to our responsiveness. We have the capacity to respond to screw-machining production requirements within short deadlines, while maintaining high quality standards. Our teams have this mindset. They are capable of carrying out two assemblies in the same day to produce different parts.

Responsiveness also means having a stock of available materials

UND in Franois has a building dedicated to the storage of raw materials, where they are perfectly catalogued. This stock gives us the flexibility to start production quickly and respond to urgent customer requests.

An integrated tribo-finishing workshop

UND is equipped with tribofinishing machines. Using vibratory abrasion, this tooling primarily removes burrs from parts that have been turned. Mastering this stage is a key factor in our responsiveness.

SANDBLASTING

Precision sandblasting and micro-sandblasting

For complex parts, we carry out precision micro-sanding to remove burrs. This operation is carried out manually by one of our technicians.

Our certifications guarantee the quality of our production

OUR CERTIFICATIONS

ISO 9001

Quality of the work process

EN 9100

Aerospace and Aeronautics

ISO 13485

Medical

Des moyens de production adaptés

  • 4BULA semi-automatic polishing machines
  • 12Polishing wheels
  • 9Lapidary
  • 2Rodeuses (LAMPLANN, PEMANO)
  • 2High-capacity laundry centres