What sets a double-acting cylinder apart from a single-acting cylinder?

A double-acting cylinder is distinguished by its ability to use air pressure for both extending and retracting the piston. This means that in a double-acting configuration, air is applied to one side of the piston to move it in one direction, and then air is applied to the opposite side to retract it. This dual action allows for greater versatility and control in automation applications compared to a single-acting cylinder, which typically only uses air pressure for extension and relies on a mechanical spring for retraction. The capability to apply pressure in both directions makes double-acting cylinders critical for various industrial and manufacturing processes where precise control is necessary.