Pneumatic Cylinders (known as Air Cylinder) are mechanical devices with produce force, often in combination with movement and are powered by compressed air. To perform their function, pneumatic cylinders impart a force by converting the potential energy of compressed air into knetic energy. This is achieved by the compressed air being able to expand without external energy input, which itself occurs due to the pressure gradient established by the compressed air being at a greater pressure than the atmosphere pressure. This air expansion forces a piston to move in the desired direction. The piston is a disc or cylinder, and the piston rod transfers the force it develops to the object to moved.