Product Overview
The Rexroth A4FO22/31L-NSC12N00 (material number R910999125) is a high-performance axial piston fixed displacement pump engineered by Bosch Rexroth for demanding industrial hydraulic systems. Operating on the proven swashplate principle, this pump delivers a constant geometric displacement of 22 cm³/rev with exceptional volumetric efficiency and pressure stability. As a fixed displacement unit within the A4FO series, it is designed for open circuit applications where a consistent, non-variable flow is required. The pump features a robust cast iron housing, precision-ground pistons, and a hardened swashplate assembly that together ensure long service life and reliable operation in continuous-duty industrial environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Piston Pump (Axial Piston, Fixed Displacement) |
| Model Designation | A4FO22/31L-NSC12N00 / R910999125 |
| Displacement | 22 cm³/rev (fixed) |
| Operating Pressure | Up to 350 bar (nominal), 400 bar (peak) |
| Mounting & Connection | Standard ISO 4-hole flange / SAE flange ports |
| Direction of Rotation | Clockwise (viewed from shaft end) |
| Shaft Type | Spline shaft, cylindrical with key |
| Circuit Type | Open circuit |
Engineering Features & Advantages
- Precision Performance: Axial piston swashplate design with finely matched piston-cylinder clearances delivers high volumetric efficiency and stable flow output even at elevated pressures.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened running surfaces and heavy-duty bearings that extend service intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in replacement without modification to existing hydraulic circuits.
- Compact Power Density: High power-to-weight ratio allows integration into space-constrained machinery while maintaining full pressure capability.
- Low Noise Emission: Optimized porting and piston kinematics reduce pressure pulsation and airborne noise, improving workplace conditions.
Typical Industrial Applications
This Rexroth A4FO22/31L-NSC12N00 axial piston fixed displacement pump is ideally suited for plastic injection molding machines, metallurgical presses, CNC machine tools, and construction & marine hydraulic systems. Its constant displacement characteristic makes it particularly effective in circuits requiring stable flow for actuator speed control, such as hydraulic motors, rotary actuators, and synchronized cylinder movements in heavy industrial equipment.
PRODUCT IMAGES
REXROTH A4FO22/31L-NSC12N00 / R910999125 Axial Piston Fixed 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 A4FO22/31L-NSC12N00 / R910999125 Axial Piston Pump. This Germany-made hydraulic pump features a swashplate design, delivering reliable, high-pressure fluid power for heavy-duty industrial systems.
