Air-shaft is one type special rewinding and unwinding shaft.  That is, the shaft whose surface (the key block) can protrude after being inflated by high pressure. After discharge the air pressure, the surface(the key block) will retract quickly. It owns different names, like air pressure shaft, expansion shaft, inflatable shaft, inflatable shaft, inflatable shaft, pressure shaft, inflatable roller, etc.

Characteristics:

1. The inflation operation time is short, the separation and placement of the inflation shaft and the paper tube only takes 3 seconds to complete the inflation and deflation, and there is no need to loosen any parts on the end side of the shaft to tightly engage with the paper tube.

2. The paper tube is easy to place, with the action of inflation and deflation, the paper tube can be moved and fixed at any position on the axis.

3. The bearing weight is large, and the shaft diameter can be determined according to the actual needs of customers, and high-hardness steel is used to increase the bearing weight.

4. High economic efficiency, the shaft is designed with special functions, and can be used for all kinds of thick, thin, wide and narrow paper tubes.

5. The maintenance is simple and the use time is long. The inflatable shaft is a single part. Each part in its structure has a fixed specification and can be used interchangeably, making it easy to maintain.

Specifications: There are many kinds, including 1 inch, 1.5 inch, 2 inch, 3 inch, 6 inch, 8 inch, 10 inch, 12 inch, etc. We can process and produce inflatable shafts with different specifications according to requirements.

The slip fraction shaft, also known as the slip air shaft, is a special section of the air shaft with independent slip and torque setting structure. Effectively improve product quality and efficacy.

Structural features and principles of slip-type inflatable shafts; slip-type inflatable shafts are mainly composed of mandrels, airbags, slip sleeves and other components. Air enters the airbags to cause air expansion, pushing each torsion group to expand outwards and according to the inflation pressure It is easy to control the tension adjustment of each roll of material on the slitting machine when it is coiled.

The slip-type air-expanding shaft is mainly used for the slitting equipment with high quality requirements and high speed of slitting products.

Technical parameters of slip air expansion shaft; main body outer diameter of slip air expansion shaft ∅75mm, action outer diameter ∅78mm, suitable for paper tube ∅76±0.2mm