Product Overview
The Rexroth A10VSO 28 DFR/31R-VPA12N00 (Material Number: R902453881) is a high-performance axial piston variable displacement pump engineered by Bosch Rexroth for demanding industrial hydraulic systems. Operating on the proven swashplate principle, this pump features a nominal displacement of 28 cm³/rev and is configured with the DFR control variant, which combines a pressure and flow compensator (DFR) with a load-sensing capability. This allows the pump to automatically adjust displacement to match system demand, delivering only the flow required while maintaining a constant pressure differential across the control valve. The result is exceptional energy efficiency, reduced heat generation, and precise actuator control. As part of the A10VSO series, this pump is designed for open-circuit operation and is widely regarded as an industry standard for medium-pressure, high-reliability applications in stationary and mobile hydraulics.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Piston Pump (Axial Piston, Variable Displacement) |
| Model Designation | A10VSO 28 DFR/31R-VPA12N00 / R902453881 |
| Nominal Displacement | 28 cm³/rev |
| Control Type | DFR – Pressure & Flow Compensator with Load Sensing |
| Operating Pressure | Up to 280 bar (continuous), 350 bar (peak) |
| Mounting & Connection | Standard ISO 4-hole flange, SAE splined shaft |
| Rotation Direction | Clockwise (viewed from shaft end) |
| Circuit Type | Open Circuit |
Engineering Features & Advantages
- Precision Performance: The DFR control enables precise pressure and flow regulation, reducing energy consumption and system heat by matching pump output to actual load demand.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust swashplate design and high-quality bearings ensuring long service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement without modification.
- High Power Density: Compact axial piston design delivers high pressure and flow from a small envelope, ideal for space-constrained installations.
- Low Noise Operation: Optimized valve plate and pre-compression volume reduce pulsation and noise, improving workplace conditions.
Typical Industrial Applications
This pump is commonly found in plastic injection molding machines, metallurgical presses, CNC machine tools, and construction & marine hydraulics. It is also suitable for general industrial power units requiring variable flow and pressure control.
PRODUCT IMAGES
REXROTH A10VSO 28 DFR/31R-VPA12N00 / R902453881 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 A10VSO 28 DFR/31R-VPA12N00 / R902453881 Axial Piston Variable Displacement Pump. This German-made hydraulic pump features a pressure-flow controller, delivering reliable, efficient fluid power for heavy-duty industrial systems.
