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

The expansion sleeve is made of high-quality aluminum material 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 a better sealing effect and longer service life.

Technical Parameters:

The main outer diameter of the air expansion sleeve is Φ150mm, the operating outer diameter is Φ155mm, and it is suitable for paper tubes of Φ152.4±0.2mm. The main length is 250mm.

Used for winding and unwinding in coating, printing, rewinding, papermaking, plastic, and related machinery.

1. Purpose: Sleeved over a 3-inch air expansion shaft to achieve the performance of a 6-inch shaft.

2. After inflation, it functions equivalently to a 6-inch air expansion shaft, with an outer diameter reaching 155-158mm.

3. Made of high-quality aluminum alloy with hard oxidation treatment, making it lightweight and easy to use.

4. The expanded part of the air expansion drum's outer surface is made of polyurethane for better sealing.

5. Customized air expansion sleeves are available for special requirements.

6. Application of air expansion sleeve (air expansion drum): It can be fixed at any position on the air expansion shaft for convenient winding and unwinding. Suitable for coating, printing, rewinding, papermaking, plastic, and related machinery.