| 摘要 |
A hydraulic cylinder is provided to easily and certainly prevent a piston from being unfastened by using a nut and a stopper instead of using a piston nut in order to prevent the piston from being unfastened. A hydraulic cylinder comprises as the follows. A groove is formed on a circumference of a male screw part of the load. A fastening hole passes through the inner circumference of the piston base from the outer circumference of the piston. A stopper which is installed so that it is protruded to the groove of a rod of the piston is inserted to the fastening hole. A set screw(50) which is installed in order to be contacted with the upper end of stopper while being connected in the female screw part in order to prevent the stopper from separating from the fastening hole. |
