Axial Piston Variable Pump A10VSO - Robert Bosch GmbH

1 Axial Piston Variable Pump A10 VSOData sheetSeries 31 Sizes 18 to 140 Nominal pressure 280 barMaximum pressure 350 barOpen circuitFeaturesVariable pump in Axial Piston swashplate design for hydro static drives in an open circuitThe flow is proportional to the drive speed and the displace mentThe flow can be steplessly varied by adjustment of the swashplate case drain ports Excellent suction characteristics Low noise level Long service life Axial and radial load capacity of drive shaft Favorable power/weight ratio Versatile controller range Short control time The through drive is suitable for adding gear pumps and Axial Piston pumps up to the same size, , 100% through 92711 1/48 Replaces.

2 RE 92707 code for standard program 2 Technical data 4 Technical data, standard unit 6 Technical data, high speed version 7DG Two point control, directly operated 10DR Pressure control 11 DRG Pressure control, remotely operated 12 DFR, DFR1 Pressure and flow control 13 DFLR Pressure, flow and power control 14ED Electro hydraulic pressure control 15ER Electro hydraulic pressure control 16 Dimensions sizes 18 to 140 18 Dimensions through drive 36 Summary mounting options 41 Combination pumps A10VO + A10VO 42 Connector for solenoids 44 Installation instructions 46 General instructions 482/48 Bosch Rexroth AG A10 VSO Series 31 | RE 92711 code for standard programA10 VSO/31 V01020304050607080910111213 Version18284571100 14001 Standard version (without symbol)l l l l l lHFA, HFB, HFC hydraulic fluid (except for Skydrol)

3 L l l l lE High speed version l l l lHAxial Piston unit02 Swashplate design, Variable , nominal pressure 280 bar, maximum pressure 350 barA10VS Operation mode03 Pump, open circuitOSize (NG)04 Geometric displacement, see table of values on pages 6 and 718284571 100 140 Control device05 Two point control, directly operatedl l l l l lDGPressure controll l l l l lDRwith flow control, hydraulicX T openl l l l l lDFRX T closedl l l l l lDFR1with swivel angle control, electric l l l l lFE11)pressure and swivel angle control, electricl l l l l lDFE11)with pressure cut off, remotely operatedhydraulicl l l l l lDRGelectricalnegative characteristic12Vl l l l l lED7124Vl l l l l lED72positive characteristic12Vl l l l l lER712)24Vl l l l l lER722)Pressure, flow and power control l l l l lDFLRS eries06 Series 3, Index 131 Direction of rotation07 Viewed on drive shaftclockwiseRcounter clockwiseLSeals08 FKM (fluor caoutchouc)V = available m = on request = not availableSee RE 300301) The following must be taken into account during project planning.

4 2) Excessive current levels (I > 1200 mA with 12 V or I > 600 mA with 24 V) to the ER solenoid can result in undesired increase of pressure which can lead to pump or system damage: Use Imax current limiter solenoids. A sandwich plate pressure reducing valve can be used to protect the pump in the event of overflow. An accessory kit with pressure reducing sandwich plate can be ordered from Rexroth under part number 92711 | A10 VSO Series 31 Bosch Rexroth AG 3/48 Type code for standard programA10 VSO/31 V01020304050607080910111213 Drive shaft18284571100 14009 Splined shaft ANSI shaftl l l l l lSsimilar to shaft "S" however for higher input torquel l l l RParallel keyed shaft DIN 6885not for through drivel l l l l lPMounting flange18284571100 14010 ISO 3019 22 holel l l l l A4 hole lBService line port18284571100 14011 SAE flange ports on opposite side.

5 Metric fastening threadl l l l l12 l 42 Through drive18284571100 14012without through drivel l l l l lN00 Flange ISO 3019 1coupling for splined shaft1)Diameterdiameter82 2 (A)5/8 in 9T 16/32 DPl l l l l lK013/4 in 11T 16/32 DPl l l l l lK52101 2 (B)7/8 in 13T 16/32DP l l l l lK681 in 15T 16/32DP l l l lK04127 2 (C)1 1/4 in 14T 12/24DP l l lK071 1/2 in 17T 12/24DP l lK24152 4 (D)1 3/4 in 13T 8/16DP lK17 63, metric 4 holeshaft key 25 l l l l lK57 Flange ISO 3019 2 Diameter80, 2 hole3/4 in 11T 16/32 DPl l l l l lKB2100, 2 hole7/8 in 13T 16/32DP l l l l lKB31 in 15T 16/32DP l l l lKB4125, 2 hole1 1/4 in 14T 12/24DP l l lKB51 1/2 in 17T 12/24DP l lKB6180, 4 hole1 3/4 in 13 T 8 /16 D P lKB7 Connectors for solenoids2)18284571100 14013 HIRSCHMANN connector without suppressor diodel l l l l lHCoupling for splined shaft as per ANSI ) Connectors for other electric components can )

6 = available m = on request = not available4/48 Bosch Rexroth AG A10 VSO Series 31 | RE 92711 dataHydraulic fluidBefore starting project planning, please refer to our data sheets RE 90220 (mineral oil) and RE 90221 (environmentally acceptable hydraulic fluids) for detailed information regarding the choice of hydraulic fluid and application using environmentally acceptable hydraulic fluids, the limitations regarding technical data and seals must be observed. Please contact us. When ordering, indicate the hydraulic fluid that is to be viscosity rangeFor optimum efficiency and service life we recommend that the operating viscosity (at operating temperature) be selected in the range nopt = opt.

7 Operating viscosity 16 .. 36 mm2/sreferred to reservoir temperature (open circuit).Limits of viscosity rangeFor critical operating conditions the following values apply:nmin = 10 mm2/s short term (t 1 min) at max perm. case drain temperature of 90 also ensure that the max. case drain temperature of 90 C is not exceeded in localized areas (for instance, in the bearing area).The fluid temperature in the bearing area is approx. 5 K higher than the average case drain = 1000 mm2/s short term (t 1 min) on cold start (p 30 bar, n 1000 rpm, tmin 25 C)Depending on the installation situation, special measures are necessary at temperatures between 40 C and 25 C.

8 Please contact detailed information on operation with low temperatures see data sheet RE 90300 03 diagramNotes on the choice of hydraulic fluidIn order to select the correct hydraulic fluid, it is necessary to know the operating temperature in the reservoir (open circuit) in relation to the ambient hydraulic fluid should be selected so that within the operat ing temperature range, the viscosity lies within the optimum range (nopt), see shaded section of the selection diagram. We recommend to select the higher viscosity grade in each : at an ambient temperature of X C the operating temperature is 60 C.

9 In the optimum operating viscosity range (nopt; shaded area) this corresponds to viscosity grades VG 46 resp. VG 68; VG 68 should be : The case drain temperature is influenced by pressure and input speed and is always higher than the reservoir temperature. However, at no point in the component may the temperature exceed 90 C. The temperature difference specified on the left is to be taken into account when determining the viscosity in the the above conditions cannot be met, due to extreme operat ing parameters please contact of the hydraulic fluidThe finer the filtration the better the cleanliness level of the hydraulic fluid and the longer the service life of the Axial Piston order to guarantee the functional reliability of the Axial Piston unit it is necessary to carry out a gravimetric evaluation of the hydraulic fluid to determine the particle contamination and the cleanliness level according to ISO 4406.

10 A cleanliness level of at least 20/18/15 must be maintained. At very high hydraulic fluid temperatures (90 C to maximum 115 C), a cleanliness level of at least 19/17/14 according to ISO 4406 is the above cleanliness levels cannot be maintained, please contact = -40 Ctmax = +115 22VG 32VG 46VG 68VG 100 Viscosity n [mm2/s]Temperature t in CFluid temperature rangeRE 92711 | A10 VSO Series 31 Bosch Rexroth AG 5/48 Technical dataOperating pressure rangePressure at service line port BNominal pressure pnom _____ 280 bar absolute Maximum pressure pmax _____ 350 bar absolute Single operating period _____ ms total operating period _____ 300 hMinimum pressure (high-pressure side) _____ 10 bar absolute1)