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Pneumatic Mechanical Chucks

The pneumatic mechanical expansion chuck for shaftless unwindings and rewindings with core diameters from 70 to 300 mm.

WISTEC pneumatic mechanical expansion chuck with bowl formed leaves (figure 1)

The WISTEC expansion chuck - designed as a module produced component- can be supplied for core diameters in the area of 70..... 300 mm. The extremely high expansion areas make it possible, without any replacement, to process the following core diameters:

70 and 76,2 mm (3 ");100 and 101,6 mm (4"); 150 and 152,4 mm(6").

By using the variable adapter plate ( flange) it will be possible to adapt the chuck to every machine concept. The air supply takes place over a valve or rotating clutch.

For variable applications we manufacture three sizes.

MINI

Drawing 1: WISTEC pneumatic - mechanical chuck, TYPE MINI;
for gripping 70 and 76 mm (3") cores.
The measures marked with * are proposed solutions for an
optional adapting flange.

TYP 1

Drawing 2: WISTEC pneumatic chuck, TYPE I; for 76mm (3") cores
The measures marked with * are proposed solutions for an optional adapting flange.

TYP 2

Drawing 3: WISTEC pneumatic - mechanical chuck, TYPE II; for 150 and 152 mm (6") cores The measures marked with * are proposed solutions for an optional adapting flange.


The pneumatic mechanical chuck provided with bowl formed leaves, is specifically designed for shaftless rewinding, in cases where shaftless clamping is needed.

WISTEC pneumatic mechanical basic expansion chuck. For 70 and 76 mm. The figure shows the chuck with an adapter for 150 mm (figure 17)