Rexroth Axial Piston Variable Pump A10VSO
Here is the relevant information about the English Service Manual PDF of Rexroth A10VSO, including its specifications, model codes and key parameters:
Core Information
The Rexroth A10VSO is an axial piston variable pump of Series 31, mainly used for open-circuit hydrostatic drives. Its English service manual covers technical data, installation instructions, safety notices, controller adjustment, and maintenance guidelines, which is applicable to machine manufacturers, fitters and service technicians. In addition, there is also Series 52 of A10VSO, designed for medium-pressure applications in open circuits with slightly different parameters.
Available English PDF Resources
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US-Version Data Sheet (RA-92711/04.12): Contains detailed technical parameters, controller types (DG/DR/DRG, etc.), dimensions, and installation instructions. Download link: RA_92711.pdf.
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Official Instruction Manual (RE 92701-01-B/04.2018): Covers safe transport, installation, commissioning, maintenance and troubleshooting. Download link: Manual_re92701-01-b_2018-04_.pdf.
Model Code Explanation (Series 31 & 52)
The model code of Rexroth A10VSO follows a standardized format, with each segment representing specific product characteristics. Taking Series 31 as the main example, the code breakdown is as follows[5]:
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Axial Piston Unit: A10VS (swashplate design, variable displacement, nominal pressure 280 bar for Series 31; AA10VS is an alternative type)
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Operation Mode: O (open circuit pump)
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Nominal Size (NG): 18, 28, 45, 71, 88, 100, 140 (Series 31); 10 to 100 cm³/rev (Series 52)
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Control Device: DG (two-point control, direct operated), DR (pressure controller), DRG (pressure controller, remotely controlled), DFR/DFR1 (pressure flow controller), DFLR (pressure, flow and power controller), ED (electro-hydraulic pressure control)
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Series: 31 (Series 3, Index 1) or 52 (for medium-pressure applications)
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Direction of Rotation: R (clockwise, viewed on drive shaft), L (counter-clockwise)
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Sealing Material: V (FKM/fluorocarbon rubber), P (NBR/nitrile rubber, only for HFA/HFB/HFC hydraulic fluid)
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Drive Shaft: S (splined shaft, ISO 3019-1), P (parallel keyed shaft, DIN 6885), R (high-torque splined shaft)
Common Model Examples (Series 31): A10VSO18DR/31, A10VSO28DFR/31, A10VSO45DRG/31, A10VSO71DFLR/31; Common Model Examples (Series 52): A10VSO10DFR1/52, A10VSO28DR/52.
Key Technical Parameters (from Manuals)
1. General Parameters
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Design: Axial piston swashplate design, variable displacement
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Circuit Type: Open circuit
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Nominal Pressure: 280 bar (4000 psi) (Series 31); 250 bar (3600 psi) (Series 52)
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Maximum Pressure: 350 bar (5100 psi) (Series 31); 315 bar (4550 psi) (Series 52)
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Nominal Sizes: NG18 to 140 (Series 31); 10 to 100 cm³/rev (Series 52)
2. Detailed Technical Data (Series 31, Typical Models)
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Model
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Displacement (cm³/r / in³/r)
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Max Speed (rpm)
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Flow (gpm / L/min)
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Weight (kg / lbs)
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|---|---|---|---|---|
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A10VSO28DFR/31
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28 / 1.71
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3600
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22.2 / 84
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15 / 33
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A10VSO45DFR/31
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45 / 2.75
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3100
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30.9 / 117
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21 / 46
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A10VSO71DFR/31
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71 / 4.33
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2600
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41.2 / 156
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33 / 73
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3. Core Features
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Flow is proportional to drive speed and displacement, with stepless adjustment by changing the swashplate angle
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Equipped with 2 case drain ports and excellent suction characteristics
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Low noise level, long service life, and favorable power/weight ratio
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Versatile controller range and short control time
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Through drive suitable for adding gear pumps and axial piston pumps up to the same size (100% through drive)
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Axial and radial load capacity of the drive shaft (Series 31)
