Air cylinder

A fluid operated cylinder comprising a tube having a blind end and a rod end;

• a piston disposed within said tube for reciprocal movement therein;
• a rod attached to and movable with the piston;
• a blind end closure disposed in the blind end of said tube to close the blind end;
• a rod end closure disposed in the rod end of said tube, an axial bearing bore in said rod end closure to receive said rod therethrough for reciprocation relative thereto, the diameter of said rod end closure being less than an inside diameter of the tube to allow slight movement of the rod end closure relative to the tube, wherein said rod end closure can move to align said bearing bore with said rod when the rod is axially misaligned with the tube to prevent binding between said rod and said bearing bore and between said piston and said tube, radial bores formed in the tube adjacent the rod end of the cylinder, a porting bore formed in said rod end closure, said porting bore being aligned with said radial tube bores, a pair of plugs inserted through said tube bores to engage opposite ends of said porting bore to thereby secure said rod end closure within said tube, a fluid passageway formed in one of said plugs, said one plug being adapted to receive a working fluid line to provide working fluid to and receive working fluid from the rod end of the cylinder, a first seal for preventing fluid from passing between the inside surface of the tube and the rod end closure and a second seal for preventing fluid from passing between the inside surface of the tube and the head end closure.