In market, the air expanding shaft has some kinds: strip type, key type, multi-bladder type and slip type shaft. Details like this:

1. Strip type air shaft: Its expandable parts are strip plates, it is suitable for high precision machinery or light core and product;

       2. Key type air shaft: Its expandable parts are independent keys, it is suitable for mechanical shaft to load heavy core and product;

      3. Multi-bladder type air shaft: Its expandable parts are long lugs, it is high precision, heavy load and light;

      4. Slip type shaft: It is mechanical shaft, which is widely applied in plastic film, metal foil, paper roll, PVC slitting roller and etc.