Vertical three-roller flow-forming machine

This machine for production of internally toothed clutch/coupling and gearbox components from rounds, preforms or forged blanks using the flow-forming process meets maximum flexibility and productivity requirements. The machine’s vertical design assures decisive advantages over the customary horizontal flow-forming machine type.

Produktvideo: VSTR 400/3
Länge: 1:42 Min.


  • Vertical type, stable machine design with all-enclosing housing
  • Compact space requirements thanks to vertical design
  • Main spindle driven by a frequency-controlled three-phase motor
  • Three-roller flow-forming support with four-axis CNC control
  • Vertical feed of the three-roller flow-forming support by means of two hydraulic CNC-controlled feed cylinders with optimum force-application points
  • Internal and external hydraulic ejectors on the main spindle
  • High-speed tool and roller changing thanks to optimum machine accessibility
  • Good automation potentials via attachment of a loading/unloading system


  • Thanks to its vertical orientation, the three-roller flow-forming support possesses excellent self-centring characteristics
  • Flow-forming support, tool mandrel and tailstock sleeve remain unaffected by gravity throughout the forming process
  • Short cycle times
  • Optimum production results thanks to vertical machine design
  • High flexibility thanks to the use of a modern CNC control system


  • Automotive sub-supply industry
  • Vehicle construction
  • Building and earthmoving vehicle construction
  • Utility-vehicle construction
  • Coupling/clutch and gearbox construction

End products

  • Plate carriers
  • Internally toothed coupling/clutch and gearbox components
  • Hollow wheels
  • Bell housings
  • Planetary carriers
  • Suspension components
  • Aeroengine components
  • Siphon cartridges

Technical data

Work diameter min. 50 mm
  max. 400 mm

Tool mounting, main spindle Centring mounting as per DIN 55027, Size 8

Drive rating, main spindle approx. 140 kW

Main spindle speed max. 650 rpm

Vertical feed force, three-roller flow-forming support max. 300 mm

Vertical stroke, three-roller flow-forming support 650 mm

Radial feed force, three-roller flow-forming support max. 200 kN per feed cylinder

Radial stroke, three-roller flow-forming support 180 mm

Clamping force, tailstock cylinder max. 300 kN

Clamping force, tailstock 300 kN

Drive rating, hydraulic system approx. 60 kW

Machine weight approx. 20,000 kg

Output (product: wheels) 70 to 240 items/hour (depending on product)

Do you have questions on this product? Would you like more detailed information on the machine or on the production of components?
Contact our Sales department, who will be pleased to help you.
Tel. +49 2526-9302-10 or e-mail:

Produktinformation VSTR 400/3 [.pdf]