Product Overview

The Rexroth A10VSO 45 DFR1/31R-VPA12N00-S1648 (material number R902520807) is a heavy-duty axial piston variable displacement pump engineered by Bosch Rexroth for open-circuit industrial hydraulic systems. Operating on the proven swashplate principle, the pump converts mechanical drive input into high-pressure hydraulic flow through a precision-ground cylinder barrel and axial piston assembly. The DFR1 control configuration combines a pressure compensator with a load-sensing (flow) control, allowing the pump to automatically adjust displacement to match system demand while maintaining a constant pressure differential across the control valve. This results in significant energy savings, reduced heat generation, and precise actuator speed control. With a nominal displacement of 45 cm³/rev and a size 31 through-drive bearing design, the A10VSO 45 is a direct-fit replacement for OEM installations and is widely deployed in plastic injection molding machines, metallurgical equipment, and general industrial power units.

Technical Specifications

Parameter	Specification / Feature
Component Type	Axial Piston Variable Displacement Pump (Swashplate Design)
Model Designation	A10VSO 45 DFR1/31R-VPA12N00-S1648
Material Number	R902520807
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
Direction of Rotation	Clockwise (viewed from drive shaft)
Mounting & Connection	SAE 2-bolt flange mounting; ISO / SAE port connections
Through-Drive	Size 31 bearing design, suitable for tandem pump configurations
Shaft Type	Spline shaft (VPA12N00 designation)

Engineering Features & Advantages

Precision Swashplate Performance: The axial piston and swashplate assembly delivers smooth, infinitely variable displacement with high volumetric efficiency and minimal pressure ripple across the full operating range.
DFR1 Load-Sensing Control: Combines pressure compensation with load-sensing flow control, matching pump output to actual system demand for reduced energy consumption, lower oil temperatures, and extended component life.
Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.

Typical Industrial Applications

With a nominal displacement of 45 cm³/rev and a size 31 through-drive bearing design, the A10VSO 45 is a direct-fit replacement for OEM installations and is widely deployed in plastic injection molding machines, metallurgical equipment, and general industrial power units.

PRODUCT IMAGES

REXROTH A10VSO 45 DFR1/31R-VPA12N00-S1648 / R902520807 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.
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Shop the genuine REXROTH A10VSO 45 DFR1/31R-VPA12N00-S1648 / R902520807 Axial Piston Variable Displacement Pump. This Germany-made hydraulic pump features a pressure-flow controller, delivering precise, reliable fluid power for heavy-duty industrial systems.