What is a single-acting pneumatic cylinder?

Only one cavity of a single-acting cylinder can input compressed air to realize unidirectional movement. Its piston rod can only push it back by external force; Usually by means of spring force, diaphragm tension, gravity, etc.

The characteristics of single-acting cylinder are:

1) only has one end for air intake (exhaust), which is simple in structure and low in gas consumption.

2) Reset with spring force or diaphragm force, and overcome the spring force or diaphragm tension with part of compressed air energy, thus reducing the output force of the piston rod.

3) Spring and diaphragm are installed in the cylinder, and the stroke is generally short; Compared with the double-acting cylinder with the same volume, the effective stroke is smaller.

4) The tension of the return spring and diaphragm of the oil cylinder changes with the deformation, so the output force of the piston rod also changes during the travel.

Due to the above characteristics, single-acting piston cylinders are mostly used for short strokes. Its thrust and moving speed are not high, such as gas lift, positioning and clamping devices.