Key‑type Air‑expansion Shaft Series
The main body of the rubber‑strip air‑expansion shaft is made of high‑strength aluminum alloy, alloy steel and other materials. It can not only deliver required balance and torque, but also operate more safely and reliably. The original multi‑channel inflation system effectively prevents shaft failure during operation. Multiple air bags expand to grip the inner diameter of any roll material.

Mechanical Expansion Shaft Series
This shaft adjusts the height of strips and convex keys by screw rotation to clamp the roll core. Adopting a mechanical structure, it features high concentricity. It is suitable for environments without air supply, with low failure rate and high reliability. Its shortcoming lies in relatively small expansion range.

Manual / Automatic Inflation Fine‑adjustment Shaft Series
The manual / automatic inflation fine‑adjustment shaft expands strips by air inflation. The shaft can slide left and right by turning the handle to realize more precise dimension adjustment.