Bar turning
Roller burnishing

Incabloc SA’s bar-turning department is a true centre of excellence in the field of precision bar-turning. The unit processes most machinable materials to produce a multitude of components. Incabloc SA is thus in a position to satisfy diversified and specific demand from its customers in this segment, whether from the watchmaking, microtechnology, medical, aeronautics or connector industries.

CNC / Cam machinery

In line with the latest technologies, the employees of the bar-turning department boast expertise derived from classical mechanical engineering and strive to guarantee optimum efficiency between digital and traditional bar-turning.

While the trend was to scrap cam-driven bar lathes, Incabloc SA has instead focused on their maintenance, renewal and development, notably thanks to state-of-the-art electronics. These machines remain irreplaceable for medium and large-scale production, for which they ensure speed and quality at unbeatable production costs.

The geometry of the components determines the choice of machine and production methods, with the CNC department enabling enhanced responsiveness and the possibility of producing small or pilot series.


The bar turning department works on two types of hobbing equipment: a traditional W90 machine for parts with simple shapes, in stacks or straight cuts; and on the latest generation AF100 CNC centre for all types of hobbing on complex components, such as frontal, helical or Breguet-type cutting, gear hobbing or even tooth-by-tooth gear-cutting. Demhosa can also undertake cutting of customers’ previously turned components, whether as series or prototypes. The specific tools, particularly mandrels, are made by the mechanical department on a CNC 102 lathe.

Roller burnishing

The company’s specialists highlight watch components: roller burnishing enables optimum pivoting between the pivot and the jewel as well as a reduction in wear due to friction – balance staffs, bushing rods, pallet staffs. This operation involves cold-working the material of the pivots and shoulders, thereby serving to achieve great accuracy, a high degree of hardness on the surface of the roller burnished parts, a surface finish with a low roughness index, as well as meeting the aesthetic criteria of watch industry customers.


  • CNC bar-turning up to 20 mm
  • Conventional bar-turning up to 10 mm
  • Standard and frontal cutting
  • Roller burnishing

Our prototype department offers the option of producing small and pilot series.

Operations: turning, drilling, tapping, threading, combing, milling, whirling, hobbing, rolling burnishing.

Materials: most machinable materials including copper alloys, steels, stainless steel, titanium, aluminium, thermoplastics and diamagnetics.

Treatments: thermal and surface treatments, polishing and galvanic treatments.

Apply to


support jewel «PA»

flat olive jewel «GO»

domed jewel «B»

domed olive jewel «BO»

flat jewel with two recesses «G2C»

flat olive jewel with two recesses «G2CO»

semi-flat jewel «MG»

semi-flat olive jewel «MGO»

domed semi-flat jewel «MGB»

domed olive semi-flat jewel «MGBO»

flat jewel «G»

olive support jewel «PAO»

domed olive support jewel «PABO»

support jewel with polished ribbon «PARP»

domed support jewel with polished ribbon «PABRP»

support jewel domed on both sides with polished ribbon «PAB2XRP»

support jewel domed on both sides «PAB2X»

endstone «CP»

domed endstone «CPB»

endstone domed on both sides «CP2B»

domed endstone with off-centre recess «CPBCD»

recess + domed «CPCB»

pin «GOU»

flat jewel with cone-shaped recess «GC»