@jauhar123 | Posted 30 Aug. 2019
The main difference between single action and double action cylinders is the number of ports. Single-action cylinder designs have one port, while double-action components, as the name suggests, have two ports. The single port lets hydraulic fluid to flow into the cylinder in one direction only. On the other hand, the fluid entering a double acting cylinder can both enter through one port and exit from the opposite one.
Both designs are feasible for their respective applications, which means that you should make a wise decision when selecting them for your specific purpose. The double acting hydraulic cylinder is the most common type of Pneumatic Cylinder Festo used across multiple industries. It is simply more versatile. Hydraulic power is available in both directions across the cylinder. A push-and-pull motion makes machinery control easier.
Single acting cylinder designs have power only in one direction. A spring performs any piston retraction power that is possible. The retraction process can be governed by gravity in some cases. Because of such limitations in usage, the double-action design is the most versatile choice in the industry today.
A significant concern with spring usage in a single acting cylinder is its longevity and accuracy. The cylinder may have precision work to complete, for instance. The piston should stop at a certain point along the cylinder’s length. A spring stretches and warps over time. The precision with springs is usually not possible.