Precision machining workshop in Bex, Switzerland, since 1932Quality, precision & delivery on time.
Turning, milling, grinding, slotting, TIG welding and inspection, from prototypes to medium series. Steels, stainless, titanium, tantalum, Hastelloy, Monel, Kovar and engineering plastics.
- 1932
- founded by Henri de Siebenthal
- 26
- CNC and conventional machines
- 2000 mm
- between centres on the lathe
- 0.001 mm
- resolution, printed measurement report
- 436 m²
- of production floor
Machining
Machining by chip removal
Operation 10
Cutting
- Sawing
- Cutting off
Capacity
2.5 t
approx., of bar stock on hand
Operation 20
Turning
- Turning
- Bar turning
- Threading
Capacity
2000 mm
between centres, 340 mm centre height (GEMINI)
Operation 30
Milling
- Milling
- Contour milling
- Thread milling
- Profiling and gear cutting by milling
- Engraving
Capacity
1626 × 813 × 762 mm
X, Y and Z strokes (HAAS VF 6)
Operation 40
Drilling and boring
- Drilling
- Boring
- Jig boring
- Tapping
Capacity
950 × 750 × 650 mm
X, Y and Z strokes of the SIP jig borer
Operation 50
Slotting
- Profiling and gear cutting by slotting
- Keyways
- Multiple profiled splines
Capacity
150 mm
cutting length (THULE)
Operation 60
Grinding and finishing
- External and internal cylindrical grinding
- Surface grinding
- Lapping
- Honing
Capacity
1180 mm
between centres and Ø 360 mm (FORTUNA 1000)
Operation 70
Assembly and welding
- Mounting
- Assembly
- Fitting
- TIG welding
- Brazing
- Tinning
Capacity
250 A
TIG welding
Operation 80
Inspection
- Dimensional inspection
- Surface plate inspection with printed measurement report
- Roughness testing
- Rockwell, Brinell and Vickers hardness testing
Capacity
0.001 mm
resolution, printed measurement report
Materials
Materials we machine
Steels and cast irons
- Steels
- Stainless steels
- Cast irons
Copper, brass and bronzes
- Copper
- Brass
- Bronzes
Aluminium and titanium
- Aluminium
- Titanium
Special metals and alloys
- Tantalum
- Nickel
- Hastelloy
- Inconel
- Incoloy
- Monel
- Invar
- Kovar
Non-metallic materials
- Graphite
- PTFE
- PP
- PE
- POM
- PVC
- PEEK
- PSU
- Vespel
Machinable ceramics
- Macor
- Stumatit
Machine park
Every capacity, dimensioned
- Parallel lathes6 machines · up to 2000 mm between centres
- CNC lathes3 machines · up to 1500 mm Z stroke
- Knee-type milling machines4 machines · up to 900 mm X stroke
- CNC milling machines2 machines · up to 1250 mm X stroke
- Machining centres2 machines · up to 1626 mm X stroke
- Jig borer1 machine · up to 950 mm X stroke
- Grinding machines3 machines · up to 1180 mm between centres
- Slotting machine1 machine · up to 400 mm X stroke
- Drilling machines2 machinesMorse taper 4, Ø 600 mm rotary table
Parts
Made in our workshop
Static mixer for viscous products, DN25 to DN40Stainless steel 1.4435 
Titanium structure, while machiningTitanium 
Micro-forceps 
Helical translatorHardened 1.4021 steel 
Injector nozzle, 3D surface machiningBronze 
3D structureTitanium
Our history
A family workshop since 1932
In 1932, in the middle of the economic depression, Henri de Siebenthal buys a lathe, a drilling machine and welding equipment. His son René starts his apprenticeship with him in 1938; his grandson Jacques joins the management in 1982.
62 kWp
Our electricity comes from our roofs
We generate our own electricity, with a 62 kWp photovoltaic installation on the workshop roofs.
SKF regional dealer
Bearing sales and advice for more than 50 years. Express: delivered the same afternoon for orders before 11:30.
Quotation request