Product Overview
The Rexroth A7VO55LRDS/63L-NZB01-S (R902218653) is a high-performance axial piston variable displacement pump engineered for open circuit hydraulic systems. Featuring a bent-axis design, this pump delivers exceptional efficiency and high pressure capability in a compact, robust package. The A7VO series is renowned for its reliability in demanding industrial and mobile applications, offering precise control of flow and pressure through a variety of control devices. The LRDS control combines pressure and flow control with a torque-limiting feature, ensuring optimal power utilization and protection against overload. This pump is ideal for systems requiring high power density and precise actuation.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Axial Piston Variable Displacement Pump |
| Model Designation | A7VO55LRDS/63L-NZB01-S |
| Part Number | R902218653 |
| Displacement | 55 cm³/rev (nominal) |
| Operating Pressure | Up to 350 bar (continuous), 400 bar (peak) |
| Control Type | LRDS – Pressure and flow control with torque limiting |
| Mounting & Connection | SAE flange, ISO 4-hole mounting |
| Rotation | Clockwise (viewed from shaft end) |
Engineering Features & Advantages
- Precision Performance: Bent-axis design with high volumetric efficiency and low noise emission, ensuring stable operation even at high pressures.
- Advanced Control: LRDS control provides precise pressure and flow regulation with integrated torque limiting, preventing overload and optimizing system energy consumption.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust bearings and hardened components for long service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement without modification.
Typical Industrial Applications
This pump is widely used in plastic injection molding machines, metallurgical presses, construction and marine hydraulics, and CNC machine tools. Its high pressure capability and precise control make it suitable for applications requiring accurate force and speed control, such as in die-casting machines, hydraulic presses, and heavy-duty mobile equipment.
PRODUCT IMAGES

REXROTH A7VO55LRDS/63L-NZB01-S / R902218653 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 A7VO55LRDS/63L-NZB01-S / R902218653 Axial Piston Variable Displacement Pump. This German-made hydraulic pump features a swashplate design, delivering reliable, high-pressure fluid power for heavy-duty industrial systems.





