Bumotec s191V

Go Back
Bumotec s191V

Complete complex parts in one set-up from a blank or a short bar

Machining of hard material such as tough ceramic

A wide range of processes and multiple machine configurations (fixed machining table, Axis rotation with multiple clamping systems,…) 


High performances machining center

The Bumotec s191V is the combination of proven Swiss made mechanics and state-of-the-art CNC control and drive technology. With the CNC Bumotec s191V mill / turn center, precise and complex components can be produced via 5-axis machining. Thanks to its stable mechanical concept and its linear drive technology, accuracies of just a few microns can be achieved. The integration of an individually adaptable automatic workpiece change unit, allows the machine to be used for one off prototypes or to run so called «unmanned shifts» without personnel. Many different configurations are available with three to five axes of machining capacity. The thermal stabilization unit almost eliminates warm-up cycles when starting or after machining interruptions.


  • Linear driven motors and direct-driven rotation axis
  • High speed spindles (maximum 40,000 rpm)
  • Smart combination of turning and 5-axis machining
  • High thermal stability
  • Automatic tool changer for 90 HSK40 tools
  • Automatic load/unload unit for blanks
  • High surface finish quality
  • Multiple configurations available
  •  Easy clamping concept
  • Large choice of clamping systems
Axis configuration

Innovative Solutions

FANUC 31i control

  • State-of-the-art control technology
  • Smooth Bumotec man-machine-interfaces

Ease-of-use Bumotec has developped a vast array of smooth interactive subroutines, helping to simplify the programming.

All machine setting A lot of the menus are dedicated to the basic characterictics of the machine. So, the machining programs are not relating to the specific machine data - full interchangeability between the machines is given.

Linear Motor Drive Option for the Z and Y axis Linear motor slides provide a step up in production speed, quality and stability while eliminating maintenance.

  • Higher precision an repetability
  • Better surface finish
  • Faster cycle times
  • Reduced Maintenance

The Additional Advantage of Speed

  • Reduction of bi-times
  • Better dynamics and finishes at higher speeds.

Swiveling B Axis

  • Direct drive with 226 or 339 Nm:
  • Paramount machining precision
  • Improvement of surface quality
  • Dynamic movements ( 0° to 90° in 0.35 sec )
  • Utterly free of backlash
  • No deterioration/wear over time

The Bumotec S191 is the result of blending «Swiss» mechanics and state-of-the-art axis drive technologies. The cast iron machine base and travelling column eliminate vibrations in a perfect way. The advanced cinematics allow the implementation of numerous machining operations at a very small footprint.

  • Complete machining solution
  • Turn-mill and multiple other operations
  • Working from bar or raw parts
  • 5 axes simultaneous machining
  • Up to 7 axes and three spindles

Accessories for main spindle and retaking spindle A vast range covers all clamping requests for blanks or bars. Integrated stoppers associated to a clamping pressure allows to fix the most delicate or massive part.

Clamping systems for retaking units Vices, collet systems or tailstocks are available. Customers special systems can be integrated when needed.

Modularity The majority of all clamping devices can be interchanged between the spindles and retaking units.

  • Superior spindle speed and torque
  • Outstanding rigidity

Oil-Air mist lubrification To achieve longevity, the high spindle rpm‘s demand a top notch lubrification. The direct injection of an oil-air mist into the bearing is the solution.

Leak proof spindle nose Sealing air supports the labyrinth joint in terms of tightness.

Speed and longevity The hybrid bearings ( ceramic balls ) allow upscale spindle speed at minimal wear, supplying a high rigidity.

Spindle interlocking A ingenious locking mechanism assures the perfect mechanical indexing of nonrotating tools ( turning ), disengaging the hybrid bearings of the milling spindle - leading possible shocks and load through the spindle housing. Indexing increments of 45°.

Automation A completely integrated loading/unloading unit enables highest autonomy at lowest invest. No referencing needed when changing parts. Parts handling through spindle grippers in the working spindle ( stored in the tool magazine ). Simple use of the machine axes. The pallet magazine can store raw parts as well as rapid indexing pallet systems such as 3R, Mecatool, Yerly and others.

Integration Bumotec integrates on customers demand other loading / unloading solutions.

A vast range of equipments to even more increase the S191 performance.

  • Fixed touch probe
  • Spindle probe
  • Automatic barfeeders
  • Chip conveyors
  • Paperbond chip conveyor
  • Parts Conveyor
  • High pressure coolant pump\n

The tool magazine

  • 30 / 60 / 90 tool pockets
  • HSK40 or Capto C4

Tool Magazine with 30, 60 or 90 tool pockets. All tools, regardless of milling or turning, are stored on 30 pocket discs. The tool return always to their initial position. Tool change in 1.8 sec. Very good accessability to magazine out of working zone.

Special tool holders 2-, 3-, or 4 cutting tips tool holders increase productivity, as they are used like a turret in the working spindle, thus saving a lot of tool-change-time.

A set of dedicated options, designed to the machining of ceramic and other hard materials, is available.

  • HF spindle (150,000 rpm)
  • Laser tool check
  • Working zone entirely in stainless

Everything from simply part storage to most complex flexible manufacturing systems – even of the largest machines. The Starrag Group makes Industry 4.0 a reality. Read more

Technical Data

Longitudinale Vertical stroke (ball screw) Z mm 410
Transversal stroke (linear) Y mm 200
Stroke (linear drive) X mm 400
Power axis Z kW 4,8
Axis force Z daN >550
Power axis Y kW 7,2
Axis force Y degree >350 daN
Power axis X kW 7,2
Axis force X daN >350
Rapids X / Y / Z m/min 50
Acceleration X / Y / Z 10,4m / S2
Resolution X / Y / Z mm 0,0001
Power S1 100% (S6 60%) standard / plus kW 8 / 13
Torque S1 100% (S6 60%) Standard / Plus Nm 9,5 / 12,5
Max. rpm Standard / Plus rpm 30.000 (option 40.000) / 30.000
Toolholder clamping force kN 8
Toolholder interface HSK-A40
Through spindle coolant bar 100 (option)
Number of tools 30 - option 60 or 90
Chip-to-chip time sec 3,4
Max. Tool-diameter mm 40 (80 with adjacant pockets ampty)
Max. Tool-length mm 130 (150 on one magazine disc level)
Max. Tool-weight kg 1,2
Torque contin. / peak Standard / Plus Nm 106/226 / 166/339
Rotation speed °/min 36.000
Clamping torque Nm 200
Resolution ° 0,0001
Tilting range ° -25/-115
Power kW 15
Torque S1 / S2 / S3 Nm 41 / 51 / 68
Max. Bar-diameter mm 50
Max. rpm turning mode rpm 6.000
Clamping force 9.500 N
Resolution ° 0,0001
Clamping systems F38 / F48 / Ottet / Mecatool / Hainbuch / Jaw-chucks
Torque contin. / peak Nm 106/226
Max. Bar-diameter mm 50
Rotation speed °/min 9.000
Holding torque Nm 250
Clamping force N 9.500
Resolution ° 0,0001


Luxury products workshop uses Bumotec technology

Read success story

Precision in movement

Bumotec S191

Read success story

BUMOTEC customer dialogue in Chemnitz

Asking the right questions

Read success story

Service Plus Package

Perfect service for perfect machines

Precondition for above-average productivity, efficiency and economy is a constant high availability of the machine. And necessary for this above all, besides innovative technology, is: A tailored service, which is perfectly coordinated to your individual requirements.

ServicePlus guarantees you machine availabilities of at least 95%!


Our call center staff immediately understands your service requirements and passes them on quickly and appropriately to our technical hotline or to the appropriate service advisor.

Starrag Hotline: +49 371 836 23 68

All Service Products

Spindle overhaul

Overhaul concepts tailored optimally to your requirements

Training courses

Efficient machine operation thanks to optimal training courses

Replacement parts

Fast and reliable supply of replacement parts due to global logistics network


High technical availability through preventive maintenance

Service near you

Time is money! That also applies when it concerns the service and maintenance of your machine. The Starrag Service and Logistics Centres near you have the necessary infrastructure, in order to guarantee you perfect service.

Service Contact

Partnering for Efficiency

Service Plus

Brochure download

I have been informed that I can withdraw my consent to the processing of my personal data at any time. Withdrawal shall not affect the legality of any data processing already carried out before withdrawing my consent. By providing my consent, I confirm that I am aged 16 years or older. I hereby consent to the processing of my data. I give my consent voluntarily. I know that this declaration of consent will be saved.
I have been informed that I can withdraw my consent to the processing of my personal data at any time. Withdrawal shall not affect the legality of any data processing already carried out before withdrawing my consent. By providing my consent, I confirm that I am aged 16 years or older. I hereby consent to the processing of my data. I give my consent voluntarily. I know that this declaration of consent will be saved.