Axial piston variable pump (A)A10VSO (US-Version)

1 Linear Motion andAssembly TechnologiesServicePneumaticsHydraulicsE lectric Drives and Controls Data SheetAxial piston variable pump(A)A10 VSO (US-Version) RA 92711- 1/40 Replaces: Series 31 Size NG18 to 140 Nominal pressure 4000 psi (280 bar)Maximum pressure 5100 psi (350 bar)Open circuitFeaturesVariable Axial piston pump of swashplate design for hydrostatic drives in open circuitsThe flow is proportional to the drive speed and displacement. The flow is infinitely variable through adjustment of the swashplate case drain ports Good suction characteristics Permissible continuous pressure 280 bar Low noise level Long service life Axial and radial loading of drive shaft possible High power to weight ratio Wide range of controls Short response times The through drive is suitable to mount additional gear or piston pumps of up to the same displacement size.

2 100% through drive code for standard range 2 Technical data 4 Technical data standard units 6 Technical data high speed units only 7 Technical data 8 Operating curves for pumps with pressure control 9DG Two point, direct control 10DR Pressure control 11 DRG Pressure control, remote 12 DFR/DFR1 Pressure and flow control 13 DFLR Pressure-flow-power control 14 Dimensions, size 18 to 140 16 Through drive dimensions 28 Combination pumps A10 VSO + A10 VSO 31 Installation instructions 32 General instruction 362/36 Bosch Rexroth Corporation (A)A10 VSO | RA 92711- of rotary group1828457110014001 HFA, HFB, HFC -Fluids EHigh-Speed-Version HAxial piston Unit1828457110014002 Swashplate design, variable (A)A10 VSOperating mode03 Pump, open circuitOSize04 Displacement Vg max (cm3)(18)(28)(45)(71)(100) (140)

3 Control devices1828457110014005 Two-point control, directly operated DGPressure control DRhydraulic, remotely controled DRGwith hydraulic flow control,X - T open DFRX - T closed with flushing function DFR1electric displacement control with press. control DFE11)electric pressure control, inverse proportional curve ED2)Pressure, flow and power control DFLRS eries06 Series 3, Index 131 Direction of rotation07 Viewed from drive shaftclockwiseRcounter-clockwiseLSeals08 FKM (Fluor-caoutchouc)

4 VDrive shaft1828457110014009 Splined shaft, ANSI , standard shaft SSimilar to shaft S however for higher input torque RSplined shaft to SAE J744, reduced diameter, not for through drive UParallel shaft SAE with key J744 (ISO 3019-1) KMounting flange1828457110014010 SAE J744 2-bolt CSAE J744 4-bolt D(A)A10VS O/31 V010203040506070809101112 Ordering code for standard range1) see RE 30030 2) see RE 92707 = Available m = In preperation Not available = Not for new projects = Preferred programRA 92711- | (A)A10 VSO Bosch Rexroth Corporation 3/36 (A)A10VS O/31 V010203040506070809101112 Ordering code for standard rangeService line ports1828457110014011 SAE flanged ports at opposite side, UNC mounting bolts 62 SAE flanged ports at opposite side, UNC mounting bolts 92 Through drive1828457110014012 Without through drive N00 Flange SAE J744 Coupling for splined shaft1)82-2 (A)

5 5/8 in 9T 16/32DP16-4 (A) K0182-2 (A)3/4 in 11T 16/32DP19-4 (A-B) K52101-2 (B)7/8 in 13T 16/32DP22-4 (B) K68101-2 (B)1 in 15T 16/32DP25-4 (B-B) K04127-2 (C)1 1/4 in 14T 12/24DP32-4 (C) K07127-2 (C)1 1/2 in 17T 12/24DP38-4 (C-C) K24152-4 (D)1 3/4 in 13T 8/16DP44-4 (D) K171) Coupler for splined shaft to ANSI (spline execution to SAE J744) = Available m = In preperation Not available = Not for new projects = Preferred program4/36 Bosch Rexroth Corporation (A)A10 VSO | RA 92711- -4 32 68 104 140 176 212 F-40 -20 0 20 40 60 80 100 C-40 -25 10 0 10 30 C50 70 90 115 -40 -13 14 32 50 86 F122 158 194 240 1600740010004600600300040020002001000100 5006030040200201001060mm2/sSUS5428074001 600170368016425 SUSmm2/stmax = 240 F (115 C)tmin = -40 F (-40 C)

6 VG 22VG 32VG 46VG 68VG 100 Technical DataHydraulic fluidsPrior to project design, please see our technical data sheets RE 90220 (mineral oil), RE 90221 (environmentally acceptable fluids) and RE 90223 (HF-fluids) for detailed information on fluids and operating conditions. When using HF- or environmentally acceptable fluids attenti-on must be paid to possible limitations of the technical data, if necessary contact us. (when ordering please state in clear text the fluid to be used). For operation on Skydrol fluid please consult viscosity rangeFor optimum efficiency and service life we recommend that the operating viscosity be chosen in the range of:nopt = opt.

7 Operating viscosity 80 - 170 SUS (16 .. 36 mm2/s)referred to tank temperature (open circuit).Limit of viscosity rangeFor critical operating conditions the following values apply: nmin = 60 SUS (10 mm2/s) for short periods (t 1 min) at max. permissible case drain temperature of 195 F (90 C).Please note, that the max fluid temperature of 195 F (90 C) is also not exceeded in certain areas (for instance bearing area) The fluid temperature in the bearing area is approx. 7 F (5 K) higher than the average leakage fluid = 4640 SUS (1000 mm2/s) for short periods (t 1 min) on cold start (tmin = p 435 psi (30 bar), n 1000 rpm, -13 F (-25 C))At temperatures between -13 F (-25 C) and -40 F (-40 C) special measures may be required, depending on installation conditions.

8 Please consult us for further detailed information on operation with low temperatures see data sheet RE diagramNotes on the selection of the hydraulic fluidIn order to select the correct fluid, it is necessary to know the operating temperature in the tank (open circuit )in relation to the ambient fluid should be selected so that within the operating temperature range, the viscosity lies within the optimum range (nopt), see shaded section of the selection diagram. We recom-mend to select the higher viscosity grade in each : at an ambient temperatue of X C the operating tem-perature in the tank is 140 F (60 C).

9 In the optimum viscosity range (nopt; shaded area) this corresponds to viscosity grades VG 46 resp. VG 68; VG 68 should be selectedImportant: The leakage fluid (case drain fluid) temperature is influenced by pressure and input speed, and is always higher than the tank temperature. However, at no point in the circuit may the temperature exceed 195 F (90 C).If it is not possible to comply with these conditions because of extreme operating parameters or high ambient temperatures, please consult of fluidThe finer the filtration the better the achieved cleanliness of the fluid and the longer the service life of the Axial piston unit.

10 In order to ensure a reliable functioning of the Axial piston unit it is necessary to determine the fluid cleanliness class through a gravimetric evaluation; a cleanliness level of at least 20/18/15 to ISO 4406 is above mentioned grades cannot be maintained please con-sult n SUS (mm2/s)Temperature t in F ( C)RA 92711- | (A)A10 VSO Bosch Rexroth Corporation 5/36 Technical DataOperating pressure rangeDirection of flowS to BPressure at suction port S (inlet)Inlet pressurepabs min _____ 12 psi (0,8 bar) absolutepabs max _____145 psi (10 bar)1) absoluteMinimum permissible inlet pressure at port S at increased drive speedIn order to prevent damage to the pump (through cavitation)