Flow Forming Machine

Leifeld ST 400 H Series

For heavy-duty forming of rotationally symmetrical hollow bodies with constant or varying wall thickness by flow forming via cylindrical, conical or embossed mandrel contours. The machine is applicable for forming processes like forward flow forming,reverse flow forming and shear forming.

The following workpieces can be manufactured on this machine from most different unmachined parts/preforms and materials:

  • Rotationally symmetrical precision hollow bodies with constant or varying wall thickness course, e.g. hydraulic cylinders, pressure tanks
  • Rotationally symmetrical and concave, convex or conical components, e.g. engine parts, wheel disks

Main Characteristics

  • Highest precision combined with maximized machine availability
  • Requirements-oriented machine construction
  • Axially pulling feed with two diagonally positioned, synchronised balls srews spindle
  • Electricially positionable tailstock with ball screw drive
  • Loading and unloading can be performed by robots

Technical Data

ST 400 H 1300
ST 400 H 2100
ST 400 H 2500
ST 400 H 3100
Workpiece-Ø, min. 50 mm 55 mm 55 mm 55 mm
Workpiece-Ø, max. 400 mm 400 mm 400 mm 400 mm
Workpiece length, max. when        
- Forward flow forming, approx. 1,200 mm 2,000 mm 2,400 mm 3,000 mm
- Reverse flow forming, approx. 2,400 mm 4,000 mm 4,800 mm 6,000 mm
Distance between centres, min. approx. 2,064 mm 2,850 mm 1,890 mm 2,490 mm
Distance between centres, max. approx. 3,414 mm 5,000 mm 4,400 mm 5,640 mm

* by 50 % reduction of wall thickness with lateral tailstock displacement

End products

  • highly stress-resistant pipes
  • engine parts
  • hydraulic cylinders
  • pressure tanks