... long service life of easy-worn parts.Stroke of 280mm, speed of 375rpm, piston road diameter of 70mm, rated piston rod load of 120 KN.2 ... long service life of easy-worn parts.Stroke of 280mm, speed of 375rpm, piston road diameter of 85mm, rated piston rod load of 220 KN.3 ... service life of easy-worn parts.2,Stroke of 280mm, speed of 375rpm, piston road diameter of 70mm, rated piston rod load of 120 KN ...