Rexroth A10VSO140 & A10VSO28 Pump | R910939192 | DFR/DFR1 Load Sensing | Variable Piston Pump

Rexroth A10VSO Series 31 High-Pressure Variable Axial Piston Pumps

Product Overview: The Rexroth A10VSO series is synonymous with exceptional reliability in industrial open-circuit hydraulic systems. As the flagship of the Series 31 platform, this series is engineered to meet the stringent demands for precise pressure and flow control in continuous industrial operations. It covers displacements from the high-power 140cc (A10VSO140) to the mainstream 28cc (A10VSO28). Featured models such as the A10VSO140DFR/31R-PPB12N00 (Material No.: R910939192) and A10VSO28DFR1/31R deliver unmatched performance. With integrated DFR/DFR1 Load Sensing control, these pumps modulate displacement in real-time based on load pressure, achieving peak energy efficiency and minimizing heat generation in injection molding, metal bending, and industrial Hydraulic Power Units (HPU).

Key Technical Advantages:

• DFR/DFR1 Intelligent Load Sensing: Features both pressure and flow compensation. The DFR1 variant provides remote pressure cut-off capability, ensuring only required power is delivered, leading to significant electricity savings.

• Superior Power Density: Optimized for the Series 31 platform, providing a continuous operating pressure of 280 Bar within a compact frame, ideal for space-constrained hydraulic stations.

• Low Ripple & Quiet Operation: Utilizes a 9-piston design and optimized pre-compression chamber technology to effectively suppress hydraulic ripples and structural noise, enhancing the industrial workspace.

• Heavy-Duty Bearing Design: Engineered for S1 continuous duty, equipped with reinforced drive shafts (PPA/PPB specs) and low-wear piston groups to ensure an ultra-long service life and extended overhaul intervals.

• High Interchangeability: As an industry-standard model, the mounting flanges, shaft ends, and ports fully comply with ISO standards, allowing for a seamless “drop-in” replacement for aging systems or other pump brands.

Detailed Models & Parameters:

• Core Series: Rexroth A10VSO Series 31 (Variable Displacement).

• Model Keywords: A10VSO140, A10VSO28, A10VSO140DFR, A10VSO28DFR1.

• Rexroth MN (Part No.): R910939192.

• Displacements: 140 cm³/rev (140cc), 28 cm³/rev (28cc).

• Pressure Ratings: Rated at 280 Bar (4000 PSI) continuous; Peak capability up to 350 Bar (5100 PSI).

• Control Modalities: DFR (Pressure & Flow Control), DFR1 (Load Sensing with Remote Control).

• Target Applications: Plastic injection molding machines, metal forming presses, CNC machine tools, and large industrial Hydraulic Power Units