Product Overview
The NACHI PZS-3B-180N4-4101A is a high-performance variable displacement axial piston pump engineered by NACHI-FUJIKOSHI, a globally recognized leader in precision hydraulic technology. Operating on the proven swashplate principle, this pump delivers infinitely variable flow control by adjusting the swashplate angle, enabling precise matching of pump output to system demand. With a nominal displacement of 180 cm³/rev, the PZS-3B series is designed for high-pressure, high-flow industrial circuits where energy efficiency, response accuracy, and long service life are critical. The “N4” control designation indicates a pressure-compensator (pressure cut-off) control configuration, while the “4101A” suffix denotes the specific mounting and porting variant. This pump serves as the central power source in demanding hydraulic systems, converting mechanical input into reliable hydraulic power with exceptional volumetric and overall efficiency.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Variable Displacement Axial Piston Pump |
| Model Designation | PZS-3B-180N4-4101A |
| Manufacturer | NACHI-FUJIKOSHI CORP. |
| Displacement | 180 cm³/rev (nominal) |
| Working Principle | Swashplate-type axial piston, variable displacement |
| Control Type | Pressure Compensator (N4 designation) |
| Operating Pressure | Standard Industrial Grade (Up to rated bar per PZS-3B series) |
| Mounting & Connection | Standard ISO / NACHI Interface (SAE flange ports) |
| Shaft Type | Straight keyed shaft, standard SAE spline options |
| Direction of Rotation | Clockwise (viewed from shaft end) — standard |
Engineering Features & Advantages
- Precision Swashplate Performance: The axial piston design with precision-ground swashplate and pistons delivers smooth, infinitely variable displacement, ensuring accurate flow matching to system load demands and minimizing energy waste through reduced throttling losses.
- Pressure Compensator Control (N4): The integrated pressure compensator automatically adjusts displacement to maintain system pressure at the set point, eliminating the need for relief valve bypass flow and significantly reducing heat generation and power consumption during holding or low-demand phases.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Precision-manufactured to original NACHI specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
This pump serves as the central power source in demanding hydraulic systems, converting mechanical input into reliable hydraulic power with exceptional volumetric and overall efficiency.
PRODUCT IMAGES



NACHI PZS-3B-180N4-4101A Variable Displacement Axial Piston 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 NACHI PZS-3B-180N4-4101A Variable Displacement Piston Pump. This Japan-made hydraulic pump features a pressure-compensated design, delivering reliable, high-efficiency fluid power for heavy-duty industrial systems.





