Convert compressed air power to mechanical power so as to make machine linear reciprocate, swing and rotate.
Determine thrust and pulling force on piston rod according to working force. Then the output force of the chosen air cylinder shall be remained. Small cylinder makes less output force, which results to air cylinder not working properly. However the air cylinder with too large diameter not only makes heavy equipment and high cost, but also makes large gas consumption and waste. For clamp designing, force amplifier shall be applied so as to reduce air cylinder size.