Air bellows are the ideal choice for applications requiring short stroke, high thrust single acting actuators.
Manufactured from fabric reinforced synthetic rubber in one, two or three convolutions according to stroke and model. They incorporate no reciprocating metal parts and so provide virtually frictionless thrust compared with conventional pneumatic cylinders.
All models are single acting only. The return stroke is provided in part by the natural spring action of the bellows but more usually by the load itself.