Product Overview
The Rexroth A4VG180EP4D1/32L-NZD02F721SP (Material Number: R902225079) is a high-performance axial piston variable displacement pump engineered by Bosch Rexroth for closed-circuit hydrostatic transmission systems. Featuring a swashplate design with axial pistons, this pump delivers precise, infinitely variable displacement control for both forward and reverse flow directions. The A4VG series is globally recognized for its robust construction, high power density, and exceptional reliability in demanding mobile and industrial hydraulic applications. With a nominal displacement of 180 cm³/rev, this unit is designed to operate at high working pressures, making it ideal for heavy-duty propulsion and drive systems requiring precise speed and torque control.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Axial Piston Variable Displacement Pump |
| Model Designation | A4VG180EP4D1/32L-NZD02F721SP |
| Material Number | R902225079 |
| Nominal Displacement | 180 cm³/rev |
| Working Pressure | Up to 400 bar (continuous), 450 bar (peak) |
| Control Type | EP4D1 – Electric Proportional Control with Integrated Electronics |
| Mounting & Connection | SAE Standard Flange / ISO 3019-2 |
| Direction of Rotation | Clockwise (viewed from shaft end) |
Engineering Features & Advantages
- Precision Swashplate Design: Axial piston configuration with a high-precision swashplate enables infinitely variable displacement, ensuring smooth and accurate control of flow and pressure in closed-loop circuits.
- Integrated Electric Proportional Control (EP4D1): On-board electronics provide fast response, excellent repeatability, and compatibility with modern CAN bus or analog control systems for advanced machine automation.
- High Power Density: Compact footprint delivers exceptional torque and speed control, ideal for space-constrained mobile and industrial machinery.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust bearings and hardened components ensuring long service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM Rexroth A4VG series specifications, ensuring drop-in replacement without modification.
Typical Industrial Applications
This pump is widely used in heavy-duty closed-circuit hydrostatic drives, including: plastic injection molding machines, metallurgical presses, construction and marine propulsion systems, CNC machine tools, and mobile hydraulic equipment such as excavators, wheel loaders, and cranes. Its precise control and high-pressure capability make it a preferred choice for applications demanding reliable variable speed and torque transmission.
PRODUCT IMAGES

REXROTH A4VG180EP4D1/32L-NZD02F721SP / R902225079 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 A4VG180EP4D1/32L-NZD02F721SP / R902225079 Axial Piston Variable Displacement Pump. This Germany-made hydraulic pump features a swashplate design, delivering leak-free, reliable fluid power for heavy-duty industrial systems.





