Novel pneumatic cylinder or pneumatic cylinder of sphere direction

Novel pneumatic cylinder or pneumatic cylinder of sphere direction includes: cylinder body, piston and piston rod, the piston embedded in the cylinder body and with the inner wall of cylinder body sliding fit hermetcally, the space that has in this cylinder body is kept apart into first cavity and second cavity by the piston, the one end of piston rod is the ball pivot end, and this ball pivot end is connected in the piston movablely, near being provided with the ball pivot cavity on the piston end of second cavity, ball pivot end ball joint is in the ball pivot cavity, the piston rod passes passageway and activity ground cross -under in cylinder body that the cylinder body has, and the other end of this piston rod lies in the outside of cylinder body and connects outsidely by driving element, be equipped with ball pivot cooperation cavity in this passageway, this piston rod is located to overlap in the pole section of passageway movablely establishes a sphere guide, and this sphere guide articulates hermetca