HZ-A101VSO71DR/31R-PPA12N00 Axial Piston Variable Pump | 100% Interchangeable for Bosch Rexroth A101VSO71 (R902403649)

Product Description

Premium factory-direct HZ-A101VSO71DR/31R-PPA12N00 Axial Piston Variable Displacement Pump, precision-manufactured as a 100% direct drop-in replacement for OEM Bosch Rexroth A101VSO 71 DR /31R-PPA12N00 (PN: R902403649). Built strictly to ISO metric standard dimensions, this  open-circuit pump features an integrated DR pressure compensator control, maintaining steady system pressure while minimizing energy consumption. Ideal for industrial machinery, injection molding presses, and hydraulic power units, our HZ-A101VSO71 pump reliably operates at continuous pressures up to 280 barwith intermittent peak shocks up to 350 bar

Rexroth A10VSO Series 31 / 32 Variable Axial Piston Pump

Guangdong Haozheng Hydraulic Equipment Co., Ltd. specializes in manufacturing high-efficiency, heavy-duty Rexroth A10VSO series 31 and 32 variable displacement axial piston pumps. Designed for open-circuit hydraulic systems, our A10VSO pumps feature excellent swashplate design, high power-to-weight ratios, low noise levels, and long service life.

As a leading global hydraulic supplier, Haozheng delivers products with 100% dimensional and performance interchangeability with original Bosch Rexroth components. Every pump undergoes a rigorous testing protocol on our advanced hydraulic test benches before shipment, ensuring zero-defect performance upon installation.

Technical Parameters & Model Selection Guide

• Nominal Pressure: 280 Bar (28 MPa)

• Peak Pressure: 350 Bar (35 MPa)

• Displacements: 18 / 28 / 45 / 71 / 100 / 140 cc/rev

• Fluid Compatibility: Mineral oil based hydraulic fluids

• Displacement (cc/rev)	Control Type Options	Full Model Reference (Series 31/32)
  A10VSO 18	DR / DFR / DFR1 / DFLR	A10VSO18DR, A10VSO18DFR, A10VSO18DFR1, A10VSO18DFLR
  A10VSO 28	DR / DFLR / DFR1 / DFR	A10VSO28DR, A10VSO28DFLR, A10VSO28DFR1, A10VSO28DFR
  A10VSO 45	DR / DFR / DFR1 / DFLR	A10VSO45DR, A10VSO45DFR, A10VSO45DFR1, A10VSO45DFLR
  A10VSO 71	DR / DFLR / DFR1 / DFR	A10VSO71DR, A10VSO71DFLR, A10VSO71DFR1, A10VSO71DFR
  A10VSO 100	DR / DFR / DFR1 / DFLR	A10VSO100DR, A10VSO100DFR, A10VSO100DFR1, A10VSO100DFLR
  A10VSO 140	DR / DFLR / DFR1 / DFR	A10VSO140DR, A10VSO140DFLR, A10VSO140DFR1, A10VSO140DFR

• Robust Hydraulic Solutions for Heavy Machinery

  Our A10VSO 31/32 piston pumps are engineered to withstand extreme pressures, high temperatures, and continuous duty cycles, making them the preferred choice for various industrial and mobile applications:

  • Metallurgical Machinery: Widely used in steel plants, continuous casting equipment, aluminum extrusion presses, and rolling mills requiring stable high-pressure control.

  • Mining Machinery: Integrated into heavy-duty underground mining equipment, coal crushers, rock drilling rigs, and excavation conveyor systems.

  • Industrial Machinery: Powering industrial hydraulic presses, plastic injection molding machines, die-casting systems, and automated factory production lines.

  • Construction Machinery: Serving as the core hydraulic power unit for mobile cranes, pile drivers, road construction equipment, and heavy earthmovers.

• The Haozheng Advantage: Precision, Quality & Reliability

  Choosing Guangdong Haozheng Hydraulic Equipment Co., Ltd. means partnering with an industry-recognized manufacturer committed to high B2B engineering standards:

  • 100% Interchangeability: Our complete pumps, control valves (DR, DFR, DFLR), and inner spare parts (piston shoes, cylinder blocks, valve plates) perfectly match original Rexroth specifications.

  • Advanced Hydraulic Test Bench Testing: We eliminate field failures. Every pump runs through full-load dynamic testing on our proprietary test benches to measure volumetric efficiency, leakage, and pressure stability before packaging.

  • Premium Logistics Protection: Heavy hydraulic units are packed in standard export fumigation-free wooden cases with anti-rust inner wrapping to ensure pristine condition upon arrival.

  • Global Supply Chain Efficiency: With massive stock on common displacements (such as A10VSO 45 and 71), we minimize your machinery downtime with rapid dispatch.

Haozheng Hydraulic Production Processing Diagram

TESTING AND FINISHED PRODUCTS

The professional hydraulic quality inspection bench conducts various technical data inspections on the produced hydraulic pumps and motors to ensure that the products delivered to customers can be used with confidence!

Haozheng Hydraulic Honorary Certificate

Exhibition

Package

Delivery

Frequently Asked Questions (FAQ)

• Q1: Can I use Haozheng A10VSO parts to repair my original Bosch Rexroth pump? A: Yes. Our internal components (including pistons, cylinder blocks, valve plates, and seal kits) are manufactured to the precise dimensional tolerances of the original Rexroth 31/32 series, allowing for seamless component-level replacement.
• Q2: What is the difference between DFR and DFR1 controls on the A10VSO pump? A: Both are pressure and flow control systems (load-sensing). However, the DFR1 controller eliminates the bleed orifice in the LS line, resulting in different dynamic response characteristics depending on your system requirements.
• Q3: What causes pressure loss in an A10VSO pump, and how do I troubleshoot it? A: Pressure loss is typically caused by internal wear (excessive clearance between the pistons and cylinder block), a misadjusted DR valve, or contaminated hydraulic oil. We recommend checking the oil filter and testing the control valve. If internal leakage is too high, contact Haozheng for a complete replacement pump or a rotating group repair kit.