A multi bladder air shaft is designed for applications where consistent gripping force is required across the full length of the shaft, especially in wide web or heavy roll handling. Instead of a single air tube, it uses multiple independent rubber bladders placed along the shaft, which expand when air is supplied.
In practical use, this design helps maintain uniform expansion even if there are slight variations in core ID or uneven load distribution. Each bladder supports a section of the core, so the grip remains balanced from one end to the other. This is particularly useful in slitting and rewinding of paper, film, foil, and laminates where roll widths can vary.
Because of multiple air chambers, the chances of air leakage affecting the entire shaft are reduced, and the overall life is better compared to single bladder shafts. It is a reliable option for high-speed machines where stability, proper tension, and reduced vibration are important.
