| 摘要 |
PROBLEM TO BE SOLVED: To reduce manufacturing man-hour and to suppress occurrence of poor welding, in a fluid pressure cylinder.SOLUTION: A hydraulic cylinder 1 is extended and contracted by a hydraulic oil pressure introduced into a cylinder tube 10 through rod internal passages 11, 21 in a piston rod 30 from a hydraulic power source. A piston rod assembly 33 of the hydraulic cylinder 1 includes: a piston rod 30 connected to a piston 70; a rod head 80 connecting the piston rod 30 to a mating member; and a first positioning portion 85 determining a rotational position of the piston rod 30 relative to the rod head 80. The piston rod 30 and the rod head 80 are connected by welding with each other. |
