Product Overview

The Rexroth A10VSO 45 DFR1/31R-PPA12N00 axial piston variable displacement pump is a high-performance swashplate-type unit engineered for open-circuit industrial hydraulic systems. Featuring a nominal displacement of 45 cm³/rev and a size 31 through-drive configuration, this pump delivers precise pressure and flow control via its DFR1 combination controller, which integrates a pressure compensator with a load-sensing (flow) control. The result is energy-efficient, demand-matched operation with excellent stability across varying load conditions. With a robust cast-iron housing, SAE mounting flange, and through-shaft capability, the A10VSO 45 is a direct-fit replacement for OEM Rexroth installations and is widely deployed in continuous-duty industrial machinery where reliability and precise control are paramount.

Technical Specifications

Parameter	Specification / Feature
Component Type	Hydraulic Piston Pump (Axial Piston, Variable Displacement)
Model Designation	A10VSO 45 DFR1/31R-PPA12N00 (R902428405)
Nominal Displacement	45 cm³/rev
Control Type	DFR1 – Pressure Compensator with Load Sensing (Flow Control)
Operating Pressure	Continuous up to 280 bar; Peak up to 350 bar
Mounting & Connection	SAE 2-bolt flange, splined drive shaft, SAE flange ports
Through-Drive	Size 31 through-drive (R) for tandem pump configurations
Direction of Rotation	Clockwise (viewed from drive shaft end)

Engineering Features & Advantages

Precision Performance: The DFR1 controller combines pressure compensation and load sensing, automatically adjusting displacement to match system demand — reducing heat generation and energy consumption in variable-load circuits.
Swashplate Design: Axial piston swashplate mechanism with high volumetric efficiency and fast response to control signals, ensuring stable flow and pressure under dynamic conditions.
Industrial Reliability: Built for continuous operation under severe industrial conditions with a rugged cast-iron housing, hardened piston/cylinder components, and long service life.
Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards, including SAE mounting flange, splined shaft, and port configuration.
Tandem Capability: Size 31 through-drive allows combination with a second pump for multi-circuit systems without additional prime movers.

Typical Industrial Applications

Plastic injection molding machines, metallurgical presses and rolling mills, CNC machine tools and machining centers, construction and marine hydraulic systems, and general industrial power units requiring precise pressure and flow control in open-circuit configurations.

PRODUCT IMAGES

REXROTH A A10VSO 45 DFR1/31R-PPA12N00 -S1648 / R902428405 Axial Piston Variable Displacement Pump

⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:

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 45 DFR1/31R-PPA12N00 -S1648 / R902428405 Axial Piston Variable Displacement Pump. This German-made hydraulic pump features a pressure-controlled swashplate design, delivering reliable, high-efficiency fluid power for heavy-duty industrial systems.