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R910916805 AA10VS028DFR1/31R-VPA12N00 German Rexroth piston pump

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R910916805 AA10VS028DFR1/31R-VPA12N00 German Rexroth piston pump

R910916805 AA10VS028DFR1/31R-VPA12N00 German Rexroth piston pump
R910916805 AA10VS028DFR1/31R-VPA12N00 German Rexroth piston pump

Large Image :  R910916805 AA10VS028DFR1/31R-VPA12N00 German Rexroth piston pump

Product Details:
Place of Origin: German
Brand Name: Rexroth
Certification: ISO
Model Number: R910916805 AA10VS028DFR1/31R-VPA12N00
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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R910916805 AA10VS028DFR1/31R-VPA12N00 German Rexroth piston pump

Description
Max. Displacement​: 28 Cm³/rev Peak Pressure​: 350 Bar
Port Size​: Code 12 (Metric Threads) Mounting Flange​: ISO 3019-2 (SAE 2-bolt)
Max. Speed​: 3000 Rpm (at Full Displacement)
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Rexroth piston pump with warranty

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German Rexroth AA10VS028DFR1 piston pump

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R910916805 hydraulic piston pump

R910916805 AA10VS028DFR1/31R-VPA12N00 German Rexroth Piston Pump
High-performance axial piston variable pump with advanced pressure and flow control for industrial hydraulic systems.
Technical Specifications
Manufacturer / Series Rexroth A10VSO Series 31
Order Code R910916805
Full Model AA10VS028DFR1/31R-VPA12N00
Pump Type Axial Piston Variable Pump (Swashplate Design, Open Circuit)
Control Type DFR1 (Pressure & Flow Control / Load Sensing)
Max. Displacement 28 cm³/rev
Nominal Pressure 280 bar
Peak Pressure 350 bar
Nominal Size NG 28
Rotation Direction Right-hand (R, viewed from shaft end)
Shaft Type Tapered shaft 1:5 with parallel key (DIN 6885)
Ports S (Suction), B (Pressure), L (Case Drain), X (LS Control)
Port Size Code 12 (Metric threads)
Mounting Flange ISO 3019-2 (SAE 2-bolt)
Max. Speed 3000 rpm (at full displacement)
Max. Flow ~84 L/min (at 3000 rpm)
Seal Material FKM (Viton)
Hydraulic Fluid Mineral oils (HL, HLP), HETG, HEES, HFDU
Operating Temperature -20°C to +80°C
Weight Approx. 17.8 kg
Country of Origin Germany
Rexroth A10VSO Series 31 axial piston pump technical diagram
Related Models
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R910904363 A A10VSO 28 DFR /31R-PPA12K01
R902417564 A A10VSO 28 DFR /31R-PPA12KB3
R910903160 A A10VSO 28 DFR /31R-PPA12N00
R910979557 A A10VSO 28 DFR /31R-PSA12N00
R910910660 A A10VSO 28 DFR /31R-VPA12N00
R910926318 A A10VSO 28 DFR1/31R-PPA12K01
R910929004 A A10VSO 28 DFR1/31R-PPA12K02
R910910590 A A10VSO 28 DFR1/31R-PPA12N00
R910946322 A A10VSO 28 DFR1/31R-PPA12N00 -SO410
R910974869 A A10VSO 28 DFR1/31R-PSA12N00
R902501926 A A10VSO 28 DG /31R-VPA12N00
R910907919 A A10VSO 28 DR /31R-PPA12K01
R910909760 A A10VSO 28 DR /31R-PPA12K02
R910907369 A A10VSO 28 DR /31R-VPA12N00
R910986352 A A10VSO 28 DRG /31L-PPA12N00
R910939601 A A10VSO 28 DRG /31R-PPA12N00
R910986796 A A10VSO 28 DRG /31R-PSA12N00
R902421254 A A10VSO 28 DRG /31R-VPA12K01
R910925052 A A10VSO 28 FHD /31R-PPA12K01
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, destrokeing the pump when system pressure reaches the set value.
  • Load Sensing (Flow Control): Automatically adjusts displacement to maintain a constant pressure differential (Δp) across a downstream orifice, providing load-independent flow control for improved energy efficiency.
What does the "VPA12N00" suffix indicate?
This code defines the mechanical configuration:
  • V: FKM (Viton) seals, offering superior chemical and temperature resistance.
  • P: Tapered shaft (1:5) with a parallel key.
  • A12: Port size code 12 (metric threads).
  • N00: No through-drive (solid shaft end, cannot mount additional pumps on the shaft).
What is the key difference between this A10VSO28 and the previously mentioned A10VSO18?
The primary difference is the displacement size:
  • A10VSO28: 28 cm³/rev, providing higher flow output (~84 L/min vs ~59 L/min at same speed).
  • A10VSO18: 18 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 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.

Tag:

rexroth piston,

axial piston pump,

electric piston pump

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