A Hydraulic cylinder ( also called a linear hydraulic motor) is a mechanical actuator that is used to give a unidirectional force through a unidirectional stroke. It has many applications, notably in....

A hydraulic press is a device ( see machine press) using a hydraulic cylinder to generate a compressive force.

Pneumatic cylinders ( sometimes known as air cylinders) are mechanical devices which use the power of compressed gas to produce a force in a reciprocating linear motion.