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R902473184 AA10VSO71DFR1/31R-VPA42N00 Piston pump Rexroth German hydraulic pump

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R902473184 AA10VSO71DFR1/31R-VPA42N00 Piston pump Rexroth German hydraulic pump

R902473184 AA10VSO71DFR1/31R-VPA42N00 Piston pump Rexroth German hydraulic pump
R902473184 AA10VSO71DFR1/31R-VPA42N00 Piston pump Rexroth German hydraulic pump

Large Image :  R902473184 AA10VSO71DFR1/31R-VPA42N00 Piston pump Rexroth German hydraulic pump

Product Details:
Place of Origin: German
Brand Name: Rexroth
Certification: ISO
Model Number: R902473184 AA10VSO71DFR1/31R-VPA42N00
Payment & Shipping Terms:
Minimum Order Quantity: 1
Packaging Details: wooden box
Delivery Time: 2 weeks
Payment Terms: Western Union,T/T,D/P,D/A,L/C
Supply Ability: 100
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R902473184 AA10VSO71DFR1/31R-VPA42N00 Piston pump Rexroth German hydraulic pump

Description
Mounting Flange​: ISO 3019-2 / SAE 2-bolt Peak Pressure​: 350 Bar (Intermittent)
Nominal Size​: NG 71 Rotation Direction​: Right-hand (R, Clockwise, Viewed From Shaft End)
Shaft Type​: Parallel Keyed Shaft (DIN 6885)
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R902473184 AA10VSO71DFR1/31R-VPA42N00 Piston pump Rexroth German hydraulic pump
Product Specifications
Manufacturer / SeriesRexroth A10VSO Series 31
Order CodeR902473184
Full ModelAA10VSO71DFR1/31R-VPA42N00
Pump TypeAxial Piston Variable Pump (Swashplate Design, Open Circuit)
Control TypeDFR1 (Pressure & Flow Control / Load Sensing)
Max. Displacement71 cm³/rev
Nominal Pressure280 bar (Continuous)
Peak Pressure350 bar (Intermittent)
Nominal SizeNG 71
Rotation DirectionRight-hand (R, Clockwise, viewed from shaft end)
Shaft TypeParallel Keyed Shaft (DIN 6885)
PortsS (Suction), B (Pressure), L (Case Drain), X (LS Control)
Port SizeCode 42 (SAE Flange, Metric Threads)
Mounting FlangeISO 3019-2 / SAE 2-bolt
Max. Speed2200 rpm (at Vg max), 2600 rpm (at reduced displacement)
Max. Flow~156 L/min (at 2200 rpm)
Seal MaterialFKM (Viton)
Hydraulic FluidMineral oils (HL, HLP), HETG, HEES, HFDU
Operating Temperature-20°C to +80°C
WeightApprox. 35.2 kg
Country of OriginGermany
Rexroth A10VSO71 hydraulic piston pump technical diagram
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Frequently Asked Questions
What is the function of the "DFR1" control?
The DFR1 is a combined Pressure and Flow Controller. It provides two key functions:
  • Pressure Limiting: Acts as a pressure compensator, destroking the pump when system pressure reaches the set value.
  • Load Sensing (Flow Control): Automatically adjusts displacement to maintain a constant pressure differential (Δp, typically ~14 bar) across a downstream orifice, providing load-independent flow control for improved energy efficiency.
What does the "VPA42N00" suffix indicate?
This code defines the mechanical configuration:
  • V: FKM (Viton) seals, offering superior chemical and temperature resistance.
  • P: Standard parallel key shaft (DIN 6885).
  • A42: Port size code 42 (SAE flange ports with metric threads).
  • N00: No through-drive (solid shaft end, cannot mount additional pumps on the shaft).
What is the key difference between this A10VSO71 and the previously mentioned A10VSO45?
The primary difference is the displacement size:
  • A10VSO71: 71 cm³/rev, providing higher flow output (~156 L/min vs ~117 L/min at same speed).
  • A10VSO45: 45 cm³/rev, smaller size for lower flow requirements.
Both share the same DFR1 control type and Series 31 design.
What are the X and L ports used for?
  • X Port (Control): Load-Sensing (LS) Feedback. It connects to the downstream system to sense the load pressure, allowing the pump to adjust its displacement to maintain the set Δp.
  • L Port (Case Drain): Must be connected directly to the tank. It relieves internal leakage pressure to protect the shaft seal (max backpressure typically 0.5-2 bar).
Can this pump be used in a closed-loop system?
No. The A10VSO DFR1 is designed exclusively for open-circuit applications (pump → valve → actuator → tank). For closed-loop hydrostatic transmissions, you would need an A4VG or A2FM series unit.

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