Axial Piston Variable Pump A4VG - Hydraulic Pump

1 Axial Piston Variable Pump A4 VGData sheetSeries 32 Size 28 to 250 Nominal pressure 400 barMaximum pressure 450 barClosed circuitFeaturesVariable Axial Piston pump of swashplate design for hydro- static drives in closed flow is proportional to the drive speed and displacement. The flow can be infinitely varied by adjusting the swashplate direction changes smoothly when the swashplate is moved through the neutral wide range of highly adaptable control devices with different control and regulating functions, for all important pressure-relief valves are provided on the high-pressure side to protect the hydrostatic transmission (pump and mo-tor) from high-pressure relief valves also function as boost valves.

2 The integrated boost pump acts as a feed pump and control pressure maximum boost pressure is limited by a built-in low- pressure relief standard with integrated pressure cut-off RE 92003 1/68 Replaces: code for standard program 2 Technical data 5NV Version without control module 11DG Hydraulic control, direct controlled 11HD Proportional control Hydraulic , pilot-pressure related 1 2HW Proportional control Hydraulic , mechanical servo 13EP Proportional control electric 14EZ Two-point control electric 15DA Automatic control speed-related 16 Dimensions size 28 to 250 18 Through drive dimensions 50 Overview of mounting options 52 Combination pumps a4vg + a4vg 53 High-pressure relief valves 54 Pressure cut-off 55 Mechanical stroke limiter 56 Ports X3 and X4 for stroking chamber pressure 56 Filtration boost circuit / external supply 57 Swivel angle sensor 61 Connector for solenoids 62 Rotary inch valve 63 Installation dimensions for coupling assembly 64 Installation instructions 65 General instructions 682/68 Bosch Rexroth AG a4vg Series 32 | RE 92003 code for standard programA4V GD/ 32

3 N010203040506070809101112131415161718192 02122 Axial Piston unit01 Swashplate design, Variable , nominal pressure 400 bar, maximum pressure 450 barA4V Operating mode02 Pump, closed circuitGSizes (NG)03 Geometric displacement, see table of values on page 82840567190125 180 250 Control devices2840567190125 180 25004 Without control modulel l l l l l l lNVProportional control hydraulicpilot-pressure related p = 6 to 18 barl l l l l l l lHD3mechanical servo1)l l l l l l l lHWProportional control electricU = 12 V DCl l l l l l l lEP3U = 24 V DCl l l l l l l lEP4 Two-point control electricU = 12 V DCl l l l l l l lEZ1U = 24 V DCl l l l l l l lEZ2 Automatic control speed-relatedU = 12 V DCl l l l l l l lDA1U = 24 V DCl l l l l l l lDA2 Hydraulic control, direct controlledl l l l l l l lDGPressure cut-off (see page 55)2840567190125 180 25005 Pressure cut-off (standard)l l l l l l l lDNeutral position switch (only for HW, see page 13)2840567190125 180 25006 Without neutral position switch (without code)

4 L l l l l l l lNeutral position switchl l l l l l l lLMechanical stroke limiter (see page 56)2840567190125 180 25007 Without mechanical stroke limiter (without code)l l l l l l l lMechanical stroke limiter, externally adjustablel l l l l l l lMPorts X3, X4 for stroking chamber pressure (see page 56)2840567190125 180 25008 Without ports X3, X4 (without code)l l l l l l l lPorts X3, X4 for stroking chamber pressurel l l l l l l lTDA control valve (see page 17)NVHD HW DGDAEPEZ09 Without DA control valvel l l l l l1DA control valve fixed setting l l l l l 2DA control valve mechanically adjustable, with position leveractuating directionright l l l l l 3 Rleft l l l l l 3 LDA control valve fixed setting and braking inch valve mounted, control with brake fluidaccording to ISO 4925, no mineral oil l 4based on mineral oil l 8DA control valve fixed setting, ports for pilot control device l l l l l 7On delivery, the position of the lever may differ from that shown in the brochure or drawing.

5 If necessary, the position of the 1) lever can be adjusted by the customer. = Available m = On request = Not available = Preferred programRE 92003 | a4vg Series 32 Bosch Rexroth AG 3/68 Ordering code for standard programA4V GD/ 32 N010203040506070809101112131415161718192 02122 Series10 Series 3, index 232 Directions of rotation11 Viewed on drive shaftclockwiseRcounter-clockwiseLSeals12 NBR (nitrile-caoutchouc), shaft seal in FKM (fluor-caoutchouc)NDrive shafts (permissible input torques see page 9)2840567190125 180 25013 Splined shaft DIN 5480for single pumpl l l l l l l lZfor combination pump 1st pump 2)l l l l l 2) 2)ASplined shaft ANSI single pumpl l l l l l l lSfor combination pump 1st pump 3) 3)l l 3)

6 L l lTOnly for combination pump 2nd pump l l UMounting flanges2840567190125 180 25014 SAE J744 2-holel l l C4-hole l lD2+4-hole l l l FService line ports2840 to 180 25015 SAE flange ports A and B, top and bottomsuction port Sbottom l 02top m 03 SAE flange ports A and B, same side rightsuction port Sbottoml l10lefttopm m13 Boost pump2840567190125 180 25016 Without integrated boost pumpwithout through drivel l l l l l l lN00with through drivel l l l l l l boost pumpwithout through drivel l l l l l l lF00with through drivel l l l l l l drives (mounting options, see page 53)17 Flange SAE J7444)Coupling for splined shaft2840567190125 180 25082-2 (A)5/8 in 9T 16/32DP5)l l l l l l l (B)7/8 in 13T 16/32DP5)l l l l l l l in 15T 16/32DP5)l l l l l l l (C)1 in 15T 16/32DP5) l.

7 091 1/4 in 14T 12/24DP5) l l l l l (D)W35 2x16x9g6) l .731 3/4 in 13T 8/16DP5) l l (E)1 3/4 in 13T 8/16DP5) l for combination pump 1st pump: shaft 2) ZStandard for combination pump 1st pump: shaft 3) S2 = 2-hole; 4 = 4-hole4) Coupling for splined shaft according to ANSI ) Coupling for splined shaft according to DIN 54806) = Available m = On request = Not available = Preferred program4/68 Bosch Rexroth AG a4vg Series 32 | RE 92003 code for standard programA4V GD/ 32 N 0102030405060708091011121314151617181920 2122 Valves (see page 54)Setting range p2840567190125 180 25018 High-pressure relief valve, pilot operated100 to 420 bar with bypass l l l l l1 High-pressure relief valve direct controlled, fixed setting250 to 420 barw/o bypassl l l 3with bypassl l l 5100 to 250 barw/o bypassl l l 4with bypassl l l 6 Filtration boost circuit / external supply (see pages 57 to 60)2840567190125 180 25019 Filtration in the boost pump suction linel l l l l l l lSFiltration in the boost pump pressure linel l l l l l l lDPorts for external boost circuit filtration (Fe and Fa)

8 And cold start valve l l l l l l KFilter mounted with cold start valve l l l l l l FFilter mounted with cold start valve and contamination indica-tor through:inspection window l l l l l l Pelectric signal l l l l l l BExternal supply (on version without integrated boost pump N00, )l l l l l l l lESwivel angle sensor (see page 61)2840567190125 180 25020 Without swivel angle sensor (without code)l l l l l l l lElectric swivel angle sensor mounted7)l l l l l l l lRConnector for solenoids8) (see page 62)2840567190125 180 25021 DEUTSCH molded connector, 2-pinwithout suppressor diodel l l l l l l lPwith suppressor diode (only for EZ and DA)

9 L l l l l l l lQStandard / special version22 Standard versionwithout codecombined with attachment part or attachment pump-KSpecial version-Scombined with attachment part or attachment pump-SKPlease contact us if the swivel angle sensor is used for control7) Connectors for other electric components can deviate8) = Available m = On request = Not available = Preferred programRE 92003 | a4vg Series 32 Bosch Rexroth AG 5/68 Technical dataHydraulic fluidBefore starting project planning, please refer to our data sheets RE 90220 (mineral oil), RE 90221 (environmentally acceptable Hydraulic fluids) and RE 90222 (HFD Hydraulic fluids) for detailed information regarding the choice of Hydraulic fluid and application Variable pump a4vg is not suitable for operation with HFA, HFB and HFC Hydraulic fluids.

10 If HFD or environmentally acceptable Hydraulic fluids are used, the limitations regarding technical data or other seals must be observed. Please contact diagramtmin = -40 Ctmax = +115 C-40 -25 -10 10 30 50 90 115 70 0 51040602010 020040060010001600-40 0 20 40 60 80 10 0 -20 1600 opt1636VG 22VG 32VG 46VG 68VG 1005 Hydraulic fluid temperature rangeTemperature t in CViscosity in mm2/sDetails regarding the choice of Hydraulic fluidThe correct choice of Hydraulic fluid requires knowledge of the operating temperature in relation to the ambient temperature: in a closed circuit, the circuit Hydraulic fluid should be chosen so that the operating viscosity in the operating temperature range is within the optimum range ( opt see shaded area of the selection diagram).