714 MZ-A - Pneumechanical self-expanding chucks with leaves

The Model 714/MZ-A is recommended for unwinding and rewinding where perfect core centring is needed.

It is superior for higher weight, speed, and torque requirements, especially with steel cores. The body of the chuck and the expanders (leaves) are available in steel only. The chuck is available in flange or shaft extension type mounting, always custom-made. Expansion is accomplished by one (or more) air activated pistons that mechanically engage the expanders. Expansion can be spring activated to grant core is gripped also in case of air leakage in the machine. The exclusive SVECOM self-expanding system (activated through the web tension), combined with the pneumatic-mechanical system, causes a further expansion of the leaves and ensures a perfect core gripping also in case of heavy-duty applications, such as very quick emergency stop.

Standard sizes available for this Model are listed below.


  • Core diameter: from 70 to 600 mm
  • Chuck length: 210 mm
  • Expansion range: 8/10 mm on diameter
  • Air pressure: min. 5 bar (suggested 6 bar)

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