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pneumatic expanding shafts

Differential rewind shafts

The differential shafts are used to a large extent in paper and plastic film cutter machines. The shaft consists of high precission internal shaft with felt friction strips on which slip friction rings equalizing the load in every unwinding roll during the process. By regulating pressure in the shaft, you are able to control the rolls´ slip. With 6 bar pressure friction rings hold firmly on the shaft while 0 bar makes them freely slip on the shaft without any resistance.There is a wide range of solutions for different rewinding materials. The major advantage of differential shafts is its ability to mount various sizes of friction rings and therefore winding cores with different dimension.

There are different types of friction rings according to application specifications bearing widths from 7 mm and diameters from 25 mm.

Differential1

We deliver spare friction rings or complete shafts for SOMA Engineering, KAMPF, ATLAS, EUROMAC, ASHE Converting, Varga Flexo and other machines.

diferencne

DIFFERENT VARIATIONS OF FRICTION RINGS4

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