Societe De Tournage Automatique Bonnevillois

What they make

According to their website, STAB (Societe de Tournage Automatique Bonnevillois) designs and manufactures complex mechanical parts with demanding surface-finish requirements, produced by precision screw-machining (decolletage) up to 26 mm in diameter. The company, based in Ayse in the Arve valley near Mont-Blanc, has operated for more than 30 years. It works in a wide range of materials: copper alloys such as brass, bronze and nickel silver, mild and stainless steels, aluminium, plastics including PMMA, Delrin and PTFE, and silver. Beyond turning, its process range covers diamond machining, tribofinishing, polishing, lacquering, engraving, grinding, heat treatment, surface treatment and assembly. Its in-house workshop combines 13 traditional Tornos cam-type lathes with 22 CNC machines (mainly Tornos and Tsugami models, roughly 10-26 mm capacity), a separate line dedicated to ballpoint-pen refill parts, and quality-control instruments for roughness and optical dimensional measurement. STAB states it holds ISO 9001 certification for its design and production processes, and serves customers in luxury goods (leather goods, lighters, eyewear, jewellery, writing instruments), fluidics, medical, connectivity, aeronautics and robotics, offering co-development through to series production.

• Precision screw-machining (decolletage) of complex mechanical parts up to 26 mm diameter, in copper alloys (brass, bronze, nickel silver), mild/stainless steel, aluminium, plastics (PMMA, Delrin, PTFE) and silver
• Diamond machining, general machining and finishing operations: tribofinishing, polishing, lacquering, engraving, grinding, heat treatment, surface treatment and assembly
• Part study, co-development, industrialization and series production against customer specifications
• In-house machine park: 13 traditional Tornos cam lathes (11 MS7, 2 R10) plus 22 CNC lathes, mostly Tornos Deco/CT/GT/Delta and Tsugami models (10-26 mm capacity) with one additional unspecified 20 mm CNC lathe
• Dedicated workshop for ballpoint-pen refill parts (for writing instruments), using ALBE filling machines and HUTT pad-printing equipment
• Quality control lab with roughness testing (Surfcom), a 2D optical measuring machine and Nikon profile projectors
• ISO 9001 certified for its design and production processes
• Serves luxury goods (leather goods, lighters, eyewear, jewellery, writing instruments), fluidics, medical, connectivity, aeronautics and robotics markets, including lead-free (RoHS) machining solutions

Summary written by byeurope.eu based on the company’s own website; independently cross-checked against the same source. Not reviewed by the company.