Variable Displacement Pump A4VG - Group VH A/S

2/52 Bosch Rexroth AG | Mobile Hydraulics A4VG | RE 92 003/05.03Ordering Code / Standard ProgrammAxial piston unitVariable swashplate design, nominal pressure 400 bar, peak pressure 450 barOperationPump in closed circuitsSizeDisplacement V g max in cm 3 28 40 56 71 90 125 180 250Control device 28 40 56 71 90 125 180 250without control module NV NVHydraulic control, pilot pressure related HD1 HD1Hydraulic control, mechanical servo HW HWHydraulic control, speed related DA DAHydraulic control, direct operated DG DGElectrical two-position control with switching solenoid EZ EZElectrical control with proportional solenoid EP EPSolenoid voltage (only for EP, EZ or DA)U = 12 V 1U = 24 V 2Pressure cut-offwith pressure cut-off (standard)Neutral position switch (only for HW)without neutral position switch (no code)with neutral position switchMechanical stroke limiterwithout mechanical stroke limiter (no code)with mechanical stroke limiter, external adjustablePorts X 3, X 4for positioning pressurewithout ports X 3 , X 4 (no code)with ports X 3 , X 4DA control valve NV EZ DG EP HW HD1 DA 28…250without DA control valve – 1with DA control valve, fixed setting – – 2with DA control valve, mech adjust. with control lever L – – 3LR – – 3Rwith DA control valve, fixed setting and hydraulic inchvalve built-on, control with brake fluid– – – – – – 4with DA control valve, mech. adjust. with control lever and L – – – – – – 5Lhydraulic inch valve built-on, control with brake fluid R – – – – – – 5Rwith DA control valve, fixed setting,and connections for master controller– – 7with DA control valve, fixed setting and hydraulic inchvalve built-on, control with mineral oil– – – – – – 8with DA control valve, mech. adjust. with control lever and L – – – – – – 9Lhydraulic inch valve built-on, control with mineral oil R – – – – – – 9RDA control valve with control leverwithout control lever (no code)with control lever - anti-clockwise operation directionwith control lever - clockwise operation directionLRSeriesSeries 3, Index 2 32Direction of rotation 28…250viewed on shaft end clockwise Ranti-clockwiseLSealsNBR (nitrile-caoutchouc), shaft seal in FKM (fluor-caoutchouc)Shaft end (permissible input torque see page 7) 28 40 56 71 90 125 180 250splined shaft for single pump ZDIN 5480 for combination pump -1st pump – 1 ) – 1 ) – 1 ) Asplined shaft for single pump SANSI B92.1a–1976 for combination pump -1st pump – 2 ) – 2 ) – 2 ) Tonly for combination pump - 2nd pump – – – – – – UA4VGDLMTN