The air expansion drum mainly consists of components such as the front sleeve, rear sleeve, cylinder body, inner tube, airbag, and convex keyboard.

The expansion sleeve is made of high-quality aluminum with a surface oxidation treatment.

Equipped with a high-quality airbag and a quick inflation nozzle.

Excellent sealing effect, long service life, and easy maintenance.
Polyurethane provides an even better sealing effect and longer service life.

Technical Parameters:

Main outer diameter of the air expansion sleeve: Φ150mm, operating outer diameter: Φ155mm, suitable for paper tube: Φ152.4±0.2mm, main length: 250MM.