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pneumatic expanding shafts

Expanding shafts with lugs

The shafts with expanding keys are often used in very demanding applications, mainly in paper industry. They are suitable for winding high weight rolls with high torque. Robust aluminium or steel body and strong aluminium lugs can take care of steel cores even. The shafts are equipped with durable rubber-textile bladder and inflation valve installed in radial or axial direction.

 

Our shafts are designed exactly to your production´s needs – the body shaft according to roll specifications (width, weight, torque), bearing exactly to technical measurement or provided mechanical drawing. The expansion shafts with lugs are robust and practically maintenance free.

We provide technical maintenance right in our production facility consisting of shaft disassembly, cleaning, bladder and valve replacement and thorough product testing.

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There are several different model types and designs:

METAL, ALUMINIUM OR RUBBER EXPANDING KEYS

Steel, aluminum or rubber segments for different kinds of applications. Steel and aluminum segments are characterized by high resistance and endurance. Rubber segments are suitable to fix steel rolls and secure them against slipping.

ONE-SIDED FIXED SHAFTS

For applications with low roll width and rather lower weight. The shaft is mounted on the flange or the journal is placed in the machine frame.

PNEUMATIC-MECHANICAL SHAFT

Serves for 100% concentric expansion of clamping segments. When inflated the air pressure pushes on the sliding piston that mechanically with trapezoidal profiles prints clamping segments to perfectly fix the roll.

INSTALLATION EXAMPLE MOUNTED ON THE MACHINE WITH SAFETY CHUCKS

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