Product Overview
The Rexroth A4VG125HD9MT1/32R-NSF02F691S-S is a heavy-duty axial piston variable displacement pump from the renowned Bosch Rexroth A4VG series, engineered specifically for closed-circuit hydrostatic transmission systems. Utilizing a robust swashplate design with axial pistons, this pump delivers high-pressure performance with infinitely variable displacement, allowing precise control of flow and direction. The A4VG series is a global benchmark in mobile and industrial hydraulics, known for its exceptional power density, long service life, and reliable operation in the most demanding applications. This model, with its specific control variant and nominal size 125, is ideal for integration into advanced drive systems requiring high torque and precise speed regulation.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Axial Piston Variable Displacement Pump |
| Model Designation | A4VG125HD9MT1/32R-NSF02F691S-S |
| Nominal Size (Displacement) | 125 cm³/rev |
| Working Principle | Swashplate design, axial pistons, closed circuit |
| Operating Pressure | Up to 400 bar (nominal), 450 bar (peak) |
| Control Type | HD9MT1 – Hydraulic proportional control with integrated pressure cut-off |
| Mounting & Connection | SAE flange, standard ISO interface |
| Rotation Direction | Clockwise or counter-clockwise (dependent on suffix) |
Engineering Features & Advantages
- Precision Performance: Advanced swashplate and axial piston design ensures high volumetric efficiency, precise displacement control, and smooth operation even at high pressures and speeds.
- Industrial Reliability: Built for continuous operation in closed-loop hydrostatic transmissions, with robust bearings and hardened components for extended service life under severe industrial conditions.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth A4VG series specifications, ensuring seamless integration and minimal downtime.
- Versatile Control: HD9MT1 control provides hydraulic proportional adjustment with integrated pressure cut-off, enabling precise speed and torque control in dynamic systems.
Typical Industrial Applications
This pump is ideally suited for heavy-duty mobile and industrial applications, including: construction machinery (excavators, wheel loaders, cranes), agricultural equipment (combines, tractors), marine winches and propulsion systems, and industrial drive systems such as plastic injection molding machines and metallurgical presses. Its closed-circuit design makes it particularly effective in hydrostatic transmissions requiring high power density and precise control.
PRODUCT IMAGES




REXROTH A4VG125HD9MT1/32R-NSF02F691S-S 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 A4VG125HD9MT1/32R-NSF02F691S-S 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.





