Factory direct supply pneumatic expanding shaft Made in China

Handong company is a professional manufacturer of pneumatic expanding shaft with full experience. The shaft can be made as customer's drawing and requirement. Steel and aluminum material are both available for industrial usage. 

Air expanding shaft can be divided into lug type air shaft and strip type air shaft. For the lug type safety chuck is with short keys, and strip type air shaft is with long and complete key strips. The keys can be made with steel or rubber materials as needed. The air shaft can be made with steel or aluminum material as its loading weight. It can be choose according to user actual loading needed and working situation.

Safety chuck fits with pneumatic expanding shaft is very popular. They are matched for roller material winding and unwinding. When loading paper core, this air shaft's keys are in the original place and plane with shaft body. After filling the air, keys inflated and expanded, so as to withstand roller core tightly for next winding and unwinding. Normally, shaft diameter can be made in 3" (76.2mm)and 6" (152.4mm) as paper core requirement, this 3" (76.2mm) is more popular used in modern industry.

Air shaft length can be customized as need. For the material of this shaft body material, it has carbon steel and aluminum. They are suitable for loading different weight of rollers.

Following are the two types of this air shaft description:

1.Lug Type Air Shaft

Shaft body uses superior steel pipe, chroming, aluminum convex key stretch flexible, rubber bladder, filling and exhausting gas nipple, good sealing effect, long service life, removable shaft head, convenient for maintenance. Lug type air shaft expanded is single key, fulcrum spreads to all the keys, so keep the shaft force balance. After filling air pressure, one side expanding height can be reached to 5mm to 6mm, it is suitable for  heavy loading of winding materials.

2.Strip Type Airshaft

Expanding part is the plates, fulcrum homodisperse, stress uniform, normally the expanding parts can reach to 4mm to 5mm, it is suitable for high precision winding machine or light material winding.

Air shaft application:

Lug type air shaft expanded is single key, fulcrum spreads to all the keys, so keep the shaft force balance, suitable for light material winding. It is application for slitting, printing, coating, laminating, bag making, paper making and other relevant winding and unwinding machinery, energy conservation and efficient.

Air shaft has the advantage of easy paper tube placing, economic, short charging time, heavy loading, simple maintenance and long service life and etc. It is widely used in printing machinery, paper making machinery and other winding and unwinding machine. It can be match with brake, clutch, pedestal safety chuck, tension controller and so on. 

Just like above picture shown, this aluminum keys pneumatic expanding shaft is matched with pillow type safety chuck and NAB air shaft brake together. They are used in tire forming machine for web material winding and unwinding. 

Keys in the air shaft can be shrinked and expanded flexible. When loading paper core or roller on the shaft, keys are shrinked. After inputting air pressure, those keys will be expanded out, so as to hold paper core tightly. Then the roller rotating as motor driven via safety chuck for winding and unwinding safely.