What are the components of single acting cylinder

 Single rod cylinders are cylinders with a one-side chrome piston rod and thus with a large piston area for extension and an area for retracting that is reduced by the piston rod area..The cylinder's main parts are the piston, the piston rod, the cylinder tube, gaskets and seals. Single acting cylinders also have a spring inside the cylinder. A single acting cylinder works with compressed air to actuate the piston in one direction and spring force to return to the base position.

A single acting hydraulic cylinder is simpler, so there is less to maintain. With only one line the action of the cylinder is determined entirely by the pressure on that one line. They often have a spring or something similar to push or retract the piston rod, but they might rely on the force on end to push it back. Simplicity is always good for equipment that needs to be rugged and reliable.