640 PLA - Pneumatic expanding shafts with ledges with lateral movement

The Model 640/PLA is recommended for unwinding and winding rolls with cores.

The body of the shaft is available in steel or aluminum, depending on the reel weight and the expansion ledges come in either metal or rubber covered depending upon core material and torque requirements. The journal ends are also available in a variety of steels and are always custom-made. Expansion is accomplished by a pneumatic valve air activated or rotary union that engage the expandors by blocking the core. Designed for line-up of material even during unwinding through the manual rotation of a knob.

Standard sizes available for this Model are listed below.


  • Core diameter: from 70/76 to 150 mm
  • Face width: from 200 to 1500 mm
  • Expansion range: 10mm on diameter
  • Air pressure: min. 5 bar (suggested 6 bar)

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