... . 2.Long life,small hydraulic stroke. This series of four column hydraulic press is applicable for such processes ... system,oil cooler,touch industrial screen,knockout device-hydraulic or mechanical type.Fast die clamping mechanism, ... floating guide rail and rolling bracket,top-mounted hydraulic system,slider lock mechanism.2.main circuit: ... 1450 1600x1600 74 52 Y71 -200 ton four column hydraulic press