... manipulation 3)high precise 4)ISO/CE top one hydraulic cutting off machine Technical Data Model PG- ... , if the electromagnetic valve or manual valve is connected, the hydraulic oil is pressed into the bottom ... forcing spindle out. Whereas, hydraulic oil will be pressed into the top of the oil jar, the ... motor(8) Stroke enactment: Adjust the height of top board(9) Handle button: Control the press board ...