What are the structural components of a single-acting cylinder?

Pneumatic actuators are mainly divided into linear reciprocating, swinging and continuous rotary. Cylinder can be divided into single-acting, double-acting, rodless, diaphragm, airbag, impact, locking, guiding, short stroke, swinging, finger type, combined type and so on. According to their different structures, functions and shapes, there are various types. Single-acting cylinders are divided into spring reset and external force reset.

Single-acting spring reset cylinder is mainly composed of piston, cylinder, front and rear end covers, piston rod, spring, pull rod and sealing ring.

One end of the cylinder is driven by compressed air, the other end is communicated with the atmosphere, and the reset is driven by a spring. When the cylinder moves forward, the driving force will be partially offset by the spring, and the stroke of the cylinder reset by the single-acting spring cannot be too long.

Diaphragm single-acting cylinder has a simple structure and is mainly composed of diaphragm, piston and cylinder. The piston moves through the deformation of the diaphragm and does not need a sealing ring to seal it. However, due to the deformation limitation of the diaphragm, the stroke of this cylinder is generally small. Diaphragm single-acting cylinder has large acting area and large driving force, and is often used in tightening occasions. The piston reset of the cylinder is driven by external force. A larger stroke can also be achieved by using a special rolling diaphragm.