| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic cylinder whose cushioning performance can be easily adjusted.SOLUTION: A cushioning mechanism 6 that reduces the speed of a piston rod 30 when it is near the end of the stroke thereof, comprises: a holder 61 fastened to the end surface of a cylindrical section 42 that engages with the inner peripheral surface of a cylinder tube 10; a plurality of fastening bolts 65 that fasten the holder 61 to the cylindrical section 42; an annular entry section 62 provided in the piston rod 30, that enters the holder 61 and the cylindrical section 42 near the end of the stroke; a cushioning path 63 formed so as to pierce at least one of the plurality of fastening bolts 65 and connect a working chamber 2 and a discharge port 66, and which guides working fluid in the working chamber 2 to the discharge port 66 when the annular entry section 62 has entered the holder 61 and the cylindrical section 42; and an orifice section 64 provided in the cushioning path 63, that applies resistance to the flow of the working fluid. |
