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R910991846 AA10VS018DFR1/31R-VPA12N00 Rexroth hydraulic pump made in Germany

China R910991846 AA10VS018DFR1/31R-VPA12N00 Rexroth hydraulic pump made in Germany

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R910991846 AA10VS018DFR1/31R-VPA12N00 Rexroth hydraulic pump made in Germany

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Supply Ability	100
Packaging Details	wooden box
Payment Terms	Western Union,T/T,D/P,D/A,L/C
Peak Pressure	350 bar
Control Type	DFR1 (Pressure & Flow Control)
Mounting Flange	ISO 3019-2 (SAE 2-bolt)
Displacement	18 cm³/rev (Max geometric)
Delivery Time	2 weeks
Nominal Pressure	280 bar
Place of Origin	Germany
Certification	ISO
Model Number	R910991846 AA10VS018DFR1/31R-VPA12N00
Brand Name	Rexroth

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Product Specification


Supply Ability	100	Packaging Details	wooden box
Payment Terms	Western Union,T/T,D/P,D/A,L/C	Peak Pressure	350 bar
Control Type	DFR1 (Pressure & Flow Control)	Mounting Flange	ISO 3019-2 (SAE 2-bolt)
Displacement	18 cm³/rev (Max geometric)	Delivery Time	2 weeks
Nominal Pressure	280 bar	Place of Origin	Germany
Certification	ISO	Model Number	R910991846 AA10VS018DFR1/31R-VPA12N00
Brand Name	Rexroth
High Light	Rexroth hydraulic piston pump ，AA10VS018DFR1 hydraulic pump ，Germany made piston pump

R910991846 AA10VS018DFR1/31R-VPA12N00 Rexroth Hydraulic Pump

High-performance axial piston variable pump manufactured in Germany, designed for open-circuit hydraulic systems with pressure and flow control capabilities.

Technical Specifications

Parameter	Specification
Manufacturer / Series	Rexroth A10VSO Series 31
Order Code	R910991846
Full Model	AA10VS018DFR1/31R-VPA12N00
Pump Type	Axial Piston Variable Pump (Swashplate Design, Open Circuit)
Control Type	DFR1 (Pressure & Flow Control)
Displacement	18 cm³/rev (Max geometric)
Nominal Pressure	280 bar
Peak Pressure	350 bar
Nominal Size	NG 18
Rotation Direction	Right-hand (R, viewed from shaft end)
Shaft Type	Parallel Keyed Shaft (DIN 6885)
Ports	S (Suction), B (Pressure), L (Case Drain), X (Control)
Port Size	Code 12 (Metric threads)
Mounting Flange	ISO 3019-2 (SAE 2-bolt)
Max. Speed	3300 rpm (at max displacement)
Max. Flow	~59 L/min (at 3300 rpm)
Seal Material	FKM (Viton)
Hydraulic Fluid	Mineral oils (HL, HLP), HETG, HEES, HFDU
Operating Temperature	-20°C to +80°C
Weight	Approx. 12.9 kg
Country of Origin	Germany

Frequently Asked Questions

Q1: What is the function of the "DFR1" control?

DFR1 stands for "Pressure Flow Controller". It combines two functions:

Pressure Control (Limiting): Acts as a pressure compensator, destrokeing the pump when system pressure reaches the set value (like a DR control).
Flow Control (Load Sensing): Automatically adjusts displacement to maintain a constant pressure differential (Δp) across a downstream orifice, providing load-independent flow control. This makes it highly energy-efficient for systems with varying loads.

Q2: What does the "VPA12N00" 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).
A12: Port size code 12 (metric threads).
N00: No through-drive (solid shaft end, cannot mount additional pumps on the shaft).

Q3: What is the key difference between DFR and DFR1?

The primary difference is the integration of the pressure limiter and flow controller. The DFR1 is a more compact and optimized version of the DFR control, offering similar functionality with potentially faster response times and simplified external piping.

Q4: What are the X and L ports used for?

X Port (Control): Used for load-sensing 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).

Q5: 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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Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha... Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and cha...

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Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd.
Nan'an, Fujian Province, China
https://www.electrichydpump.com/

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