Axial Piston Variable Pump A7VO - Group VH A/S

Blocked for new applications / Für Neuanwendung gesperrtRE 92 202/03.06 A7VO Bosch Rexroth AG 13/32HD Hydraulic Control, Pilot Pressure RelatedWith the pilot pressure related control the pump diplacement isadjusted in proportion to the pilot pressure applied to port X 1 .Maximum permissible pilot pressure p St max = 40 barControl from V g min to V g max .Circuit diagram HDX1Y3With increasing pilot pressure the pump swivels to a higherdisplacementSetting range for start of control _________________ 4 - 15 barWhen ordering, state in clear text the start of control.URV g minB (A)A1A control pressure of 40 bar is required to swivel the pumpfrom its starting position V g min to V g max .The required control pressure is taken either from the operatingpressure, or from the externally applied control pressure atthe Y 3 port.V g maxX3STo ensure the control even at low operating pressure < 40 barthe port Y 3 must be supplied with an external control pressureof approx. 40 bar.Characteristic HD1Increase in pilot pressure V g min to V g max ________ Δp = 10 bar4035Pilot pressure pSt in barSetting range302520151040 0,2 0,4 0,6 0,8 1,0V g min Displacement V g maxCharacteristic HD2Increase in pilot pressure V g min to V g max ________Δp = 25 bar4035Pilot pressure pSt in barSetting range302520151040 0,2 0,4 0,6 0,8 1,0V g min DisplacementV g max