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Series for gas cylinders

Necking-in machine

The SFM necking-in machine closes the ends of cylindrical tubes totally and assures gas-tightness. WF machinery‘s unique technology makes it possible to produce almost any contours in the shoulder/neck area.

We manufacture machines for production of ultra-small cylinders (for the beverages industry and for airbag cartridges, for example) just as much as for large cylinders (for jumbo cylinders, for instance). So now there is nothing preventing series production of your individual gas cylinders on only a single machine!

Your benefits:

  • Series production of bottle bases or necks on just one machine.
  • Gas tightness with one firing operation.
  • Increase of wall thickness up to 5 times the initial wall thickness.
  • Flexible design of contours in base, shoulder and neck.
SFM 150
SFM 300
SFM 450

Necking-in machine (SFM) 150

for necking-in of tube ends of diameters up to 150 mm (hot forming)

Workpiece diameter
min.
50 mm
Workpiece diameter
max.
150 mm
Workpiece length (cylindrical section)
min.
400 mm
Workpiece length (total)
max.
1.200 mm
Drive rating, main spindle
approx.
120 kW
Main-spindle speed
max.
1.200 min-1
Support stroke
axial
400 mm
Support stroke
radial
+/- 60 mm
Angular swivel stroke of necking-in support
120˚
Support force
axial
100 kN
Support force
radial
100 kN
Support torque
max.
10 kNm

Necking-in machine (SFM) 300

for necking-in of tube ends of diameters up to 300 mm (hot forming)

Workpiece diameter
min.
100 mm
Workpiece diameter
max.
300 mm
Workpiece length (cylindrical section)
min.
400 mm
Workpiece length (total)
max.
1.800 mm
Drive rating, main spindle
approx.
165 kW
Main-spindle speed
max.
1.100 rpm
Support stroke
axial
400 mm
Support stroke
radial
+/- 90 mm
Angular swivel stroke of necking-in support
20˚
Support force
axial
125 kN
Support force
radial
125 kN
Support torque
max.
15 kNm

Necking-in machine (SFM) 450

for necking-in of tube ends of diameters up to 450 mm (hot forming)

Workpiece diameter
min.
200 mm
Workpiece diameter
max.
450 mm
Workpiece length (cylindrical section)
min.
650 mm
Workpiece length (total)
max.
2.500 mm
Drive rating, main spindle
approx.
200 kW
Main-spindle speed
max.
900 rpm
Support stroke
axial
600 mm
Support stroke
radial
+/- 125 mm
Angular swivel stroke of necking-in support
120˚
Support force
axial
250 kN
Support force
radial
250 kN
Support torque
max.
45 kNm
SFM 150
SFM 300
SFM 450

Endproducts of SFM series

Necking-in machine for the production of gas cylinders: Small cylinders (e.g. for the beverage industry, airbag cartridges), as well as for large cylinders (e.g. for jumbo bottles).

  • Bottleneck after final machining.

3D-view

Necking-in machine SFM

SFM 150: 3D-Ansicht in Full HD
SFM 300: 3D-Ansicht in Full HD