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Bladder type pneumatic expanding shaft is a special kind of air shaft, it is mainly applied in high precision working situation. Bladder type pneumatic expanding shaft is used for coil winding and unwinding.

Bladder type air shaft's structure is a little different with lug and strip type air shafts. It is with multiple rubber tubes design, rubber tubes length is similar with shaft expanding part length. Shaft body can be made with steel or aluminum material, normally keys are made with rubber, aluminum or PU.

Customized is available. Shaft material can be chosen as customer's need, steel shaft end is made as customers’ drawing, so as to meet their requirement.

Technical description of this bladder air shaft as below: