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ilspmuPcuardyHlilllilO spmuPaunaMspmuPyrettaBseireSPMSspmuPcirtceEspmuPacepSreooC■ SpecificationsHydraulic Boosters (RKB Series)*A direction-control valve for actuator is necessary on the secondary side.*Each of A and B has two IN and two OUT ports, hence the 4-way direction-control valve on the primary side can operate the double-acting cylinder on the secondary side.*The cylinder on the diagram is not included in the equip-ment.*The 4-way direction-control valve, cylinder, and pressure switch on the diagram are not included in the equipment.Special PumpsMinimum requiredvolume on the primary sideL/minRated requiredvolume on the primary sideL/min5.020.0No.79E since2025Approx.weightkgPort sizeRc3/85.79.5Maximum pressure on the primary sideMPaMaximum pressure on the secondary sideMPa11.270■RKB-20-140WRated dischargevolume on the secondary sideL/minHydraulic oil2.4ISO VG32■RKB-20-140S hydraulic circuit diagram■RKB-20-140W hydraulic circuit diagram99● The secondary side generates pressure, which is 6.25 times that of the　primary side, and oil is continuously discharged.● Since the booster can convert the pressure into a high pressure of 70 MPa　using a hydraulic unit for about 14 MPa as a drive source, lightweight and　compact equipment can be created.● Under no load condition, the discharge volume in the low-pressure unit is used,　and the unit operates the same as a high-and-low-pressure two-stage pump.● In the RKB-20-140W, each of A and B has two IN and two OUT ports, hence　the 4-way direction-control valve on the primary side can operate the　double-acting cylinder on the secondary side.● We can design and manufacture units with special specifications.*If the booster is frequently used, contact us in advance.ModelBoost ratioRKB-20-140S1:6.25RKB-20-140W*The discharge volume change depending on the load on the secondary side.■RKB-20-140S ■RKB-20-140W