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Expansion units

Expansion units by Neuenhauser Vorwald

Neuenhauser Vorwald combine traditional skilled craftsmanship, precision machining, technical innovation and commercial foresight, which is the key to their success in the market. With their high standard of qualifications and training, our customers are guaranteed the highest possible quality and maximum flexibility in the execution of standard and special orders.
Expansion units by Neuenhauser Vorwald
Expansion units by Neuenhauser Vorwald

Mechanical expansion shafts

These low-maintenance mechanical expansion shafts are suitable for particularly high specification winding requirements. High standards of quality are shown in absolute true running and concentricity. These shafts can be maintained in operation for many years, after which they can be refurbished with replacement of the worn items.

Series 401

  • Shaft body made of numerous materials with various wall thicknesses
  • High load capacity of the expansion shafts with very low maintenance

Serie 410 MULTICORE ©

  • Special dimensions possible
  • Reliably mounting a number of narrow individual cores
  • Achieves maximum possible moments of inertia and minimum bending values

Series 416

  • Standard model with individual clamping jaws
  • Universally applicable, simple structure, easy handling
  • Long service life

Series 745

  • Very high torque transmission
  • Absolutely concentric clamping
  • For very narrow or thin-walled cores
Mechanical expansion shafts

Pneumatic expansion shafts

The range of pneumatic shafts are highly robust despite their low weight. Their simple, modular design enables quick exchange of shaft journals and quick repairs. For use in all areas of the paper or plastics processing industries.

Series A

  • Standard model with individual expansion ledges
  • Quick repairs if necessary
  • Long service life

Series 403

  • Low dead weight
  • High carrying capacity
  • Fast and uncomplicated repairs

Series L

  • Continuous expansion leaves
  • Special dimensions are possible
  • Also for thin-walled cores in which deformation could cause problems

Series MB

  • Low dead weight and ease of handling
  • For wide and very narrow reels
  • Expanding continuous ledges

Series 409

  • Type and number of ledges according to your application
  • High flexibility
Pneumatic expansion shafts

Expansion couplings

The Vorwald expansion couplings are fastened on existing shafts to cater quickly for different diameter sizes and a low weight. They expand either pneumatically or mechanically. Their practical design provides for simple handling.

There is the option for all expansion couplings to be equipped with surface protection. Versions suitable for the food industry are also available. The Vorwald expansion couplings can be converted particularly quickly to other core diameters.

Series SPA

  • Based on the design of the A series winding shaft
  • Equipped with freely moving expansion ledges
  • Can be used winding in both directions

Series SMB

  • Designed for “light” applications
  • Length can be adapted as required, even to long lengths
  • Based on the tried-and-tested design of the MB shafts

Series 609

  • Based on the 409 series expansion shaft
  • Used in “harsh” applications
  • Characterised by their light but extremely robust design

Series SPM / SPZ

  • Based on the principle of the L series expansion shaft
  • Suitable for narrow sheets and thin-walled cores

Series 605

  • Especially for use when core inner diameters are changed particularly often
  • Available with and without core stop collars

Serie s260

  • Simple and inexpensive
  • For low to medium winding requirements
  • Special dimensions are possible on request
Expansion couplings

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