Product Overview

The Rexroth A10VSO140 DR /31R-VPB12N00 (Material Number: R902449984) is a high-performance axial piston variable displacement pump engineered by Bosch Rexroth for demanding industrial and mobile hydraulic systems. Operating on the proven swashplate principle, this pump features a pressure-controlled (DR) displacement mechanism that automatically adjusts the swashplate angle to maintain a constant system pressure, delivering flow only as required by the load. With a nominal displacement of 140 cm³/rev and a size 140 frame, the A10VSO series is widely regarded as an industry benchmark for open-circuit hydrostatic drives, offering exceptional power density, high volumetric efficiency, and long service life in continuous-duty applications.

Technical Specifications

Parameter	Specification / Feature
Component Type	Hydraulic Piston Pump (Axial Piston Variable Displacement)
Model Designation	A10VSO140 DR /31R-VPB12N00
Material Number	R902449984
Nominal Displacement	140 cm³/rev (Size 140)
Control Type	DR – Pressure Controller (Constant Pressure / Pressure Cut-Off)
Operating Pressure	Up to 280 bar continuous / 350 bar peak (standard industrial grade)
Mounting & Connection	SAE / ISO standard flange, splined drive shaft, metric port connections
Direction of Rotation	Clockwise (viewed from drive shaft end)

Engineering Features & Advantages

Precision Swashplate Performance: The axial piston swashplate design with high-precision cylinder barrel and piston shoes delivers smooth, infinitely variable displacement with minimal pressure ripple and excellent low-speed stability.
DR Pressure Control: The integrated pressure controller maintains a constant preset system pressure by automatically reducing displacement as load pressure rises, eliminating excess heat generation and reducing energy consumption in holding and clamping circuits.
Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened running surfaces, heavy-duty bearings, and a robust housing designed to withstand high pressure and thermal cycling.
High Power Density: The size 140 frame provides high flow output within a compact envelope, making it ideal for space-constrained machinery requiring substantial hydraulic power.
Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards, ensuring drop-in replacement without modification to existing manifolds, couplings, or control lines.

Typical Industrial Applications

The Rexroth A10VSO140 DR is deployed across a wide range of heavy-duty industrial and mobile hydraulic systems, including plastic injection molding machines, metallurgical presses and rolling mills, construction and marine hydraulics, CNC machine tools, and general industrial power units requiring reliable constant-pressure open-circuit operation.

PRODUCT IMAGES

REXROTH A10VSO140 DR /31R-VPB12N00 / R902449984 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 A10VSO140 DR /31R-VPB12N00 / R902449984 Axial Piston Variable Displacement Pump. This German-made hydraulic pump features a pressure-controlled design, delivering reliable, leak-free fluid power for heavy-duty industrial systems.