Product Overview

The Rexroth A10VSO 18 DFR1/31R-VPA12N00 (Material Number: R910991846) is a high-performance axial piston variable displacement pump engineered by Bosch Rexroth for open-circuit industrial hydraulic systems. Featuring a swashplate design, this pump delivers precise variable displacement control through the DFR1 (Pressure and Flow Control) regulator, which combines a pressure compensator with a load-sensing flow controller to maintain constant flow independent of load pressure. With a nominal displacement of 18 cm³/rev and a size 31 frame, this pump is optimized for medium-pressure applications requiring high efficiency, low noise, and precise control. The through-drive capability allows for tandem pump configurations, making it a versatile solution for complex hydraulic circuits in industrial machinery.

Technical Specifications

Parameter	Specification / Feature
Component Type	Axial Piston Variable Displacement Pump
Model Designation	A10VSO 18 DFR1/31R-VPA12N00
Material Number	R910991846
Nominal Displacement	18 cm³/rev
Control Type	DFR1 – Pressure & Flow Control (Load Sensing)
Operating Pressure	Up to 280 bar (continuous), 350 bar (peak)
Speed Range	Up to 3000 rpm (dependent on inlet pressure)
Mounting & Connection	SAE / ISO 4-hole flange, splined drive shaft
Through-Drive	Available for tandem pump configurations

Engineering Features & Advantages

Precision Performance: The DFR1 control ensures exact pressure and flow regulation, reducing energy consumption and heat generation by matching pump output to system demand.
High Efficiency Swashplate Design: Axial piston geometry with optimized swashplate angle delivers high volumetric efficiency and smooth operation across the entire displacement range.
Industrial Reliability: Built for continuous operation under severe industrial conditions with robust bearings and hardened components for extended service life.
Low Noise Operation: Advanced porting and precision manufacturing minimize pressure pulsation and noise emissions, ideal for sensitive work environments.
Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards, ensuring drop-in replacement without modification.

Typical Industrial Applications

This pump is commonly used in plastic injection molding machines, metallurgical presses, CNC machine tools, and general industrial hydraulic power units. Its precise load-sensing control makes it particularly suitable for applications requiring variable flow and pressure

PRODUCT IMAGES

REXROTH A A10VSO 18 DFR1/31R-VPA12N00 / R910991846 Axial Piston Variable Displacement Pump

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Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
Peace of Mind: Covered by our 12-Month Replacement Warranty.

Shop the genuine REXROTH A A10VSO 18 DFR1/31R-VPA12N00 / R910991846 Axial Piston Variable Displacement Pump. This Germany-made hydraulic component features a pressure-flow controller, delivering leak-free, reliable fluid control for heavy-duty industrial systems.