Guangdong Yanhui Hydraulic Co., Ltd. is one of the leading manufacturers and suppliers of nachi pvd series hydraulic piston pumps in China. We warmly welcome you to wholesale bulk nachi pvd series hydraulic piston pumps for sale here from our factory. If you have any enquiry about pricelist and quotation, please feel free to email us.
Product Overview
▔▔The NACHI PVD Series Variable Displacement Swash-Plate Hydraulic Piston Pump is a high-performance, compact dual/split-flow axial piston pump engineered specifically for mini and compact excavators, construction machinery, and mobile hydraulic equipment. Manufactured by NACHI-FUJIKOSHI Corp., the PVD series combines dual variable-displacement piston pumps with optional auxiliary gear pumps into a single, integrated housing, delivering exceptional power density, straight-line tracking accuracy, and overall system energy savings.
Key Advantages
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Integrated Dual-Flow Design (Split Flow): A single drive shaft operates two equal-displacement piston pump mechanisms, providing synchronized oil delivery to dual travel motors or working circuits.
Constant Horsepower (Total Power) Control: Prevents engine stalls by regulating pump displacement dynamically so total hydraulic power consumption never exceeds engine output limits.
No External Case Drain Required: Eliminates complex drain line piping (internal drain design), reducing machine footprint, leakage points, and installation costs.
Integrated Valve Block & Auxiliary Gear Pump Options: Can be equipped with pilot gear pumps, power-shift controls, and direct-mount valve blocks for a total hydraulic center solution.
Ultra-Quiet & High Efficiency: Features NACHI's proprietary low-noise swash plate and high-precision valve plate engineering, maintaining high efficiency (>90%) even at continuous working pressures up to 24.5 MPa (3,553 PSI).
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Technical Specifications
▔▔| Parameter | PVD-00B | PVD-0B | PVD-1B | PVD-2B | PVD-3B |
| Max. Displacement (Piston x 2) | 8.0 × 2 (0.49 × 2) | 12.0 × 2 (0.73 × 2) | 17.0 × 2 (1.04 × 2) | 22.5 × 2 (1.37 × 2) | 33.0 × 2 (2.01 × 2) |
| Max. Operating Pressure | 24.5 (3,553) | 24.5 (3,553) | 24.5 (3,553) | 24.5 (3,553) | 24.5 (3,553) |
| Peak Pressure Capacity | 27.5 (3,988) | 27.5 (3,988) | 27.5 (3,988) | 27.5 (3,988) | 27.5 (3,988) |
| Max. Drive Speed | 2,800 | 2,800 | 2,700 | 2,600 | 2,400 |
| Rated Drive Speed | 2,800 | 2,600 | 2,500 | 2,400 | 2,200 |
| Min. Drive Speed | 900 | 900 | 900 | 900 | 900 |
| Control Options Available | Horsepower Control, Gear Pump (G), Power Shift (P) | Horsepower Control, Gear Pump (G), Power Shift (P), Valve Block (B) | Horsepower Control, Gear Pump (G), Power Shift (P), Valve Block (B) | Horsepower Control, Gear Pump (G), Power Shift (P), Valve Block (B) | Horsepower Control, Gear Pump (G), Power Shift (P), Valve Block (B) |
| Weight (Approx.) | 9.0 (20) | 13.0 (29) | 15.0 (33) | 20.0 (44) | 27.0 (60) |
| Recommended Oil Viscosity | 20 to 200 (Optimum: 20 to 50) | 20 to 200 (Optimum: 20 to 50) | 20 to 200 (Optimum: 20 to 50) | 20 to 200 (Optimum: 20 to 50) | 20 to 200 (Optimum: 20 to 50) |
| Fluid Temperature Range | 5 to 60 (41 to 140) | 5 to 60 (41 to 140) | 5 to 60 (41 to 140) | 5 to 60 (41 to 140) | 5 to 60 (41 to 140) |
Applications
▔▔| Application Sector | Target Machinery | Key Function / Role of PVD Pump | Main Advantages Realized |
| Mini & Compact Excavators | 1-Ton to 6-Ton Crawler Excavators | Powers left/right track travel, main boom, arm, and bucket hydraulic circuits simultaneously. | Guarantees straight movement while tracking; prevents engine stall during combined boom/travel actions. |
| Compact Material Handling | 1-Ton to 3-Ton Rough Terrain Forklifts | Drives primary hydraulic mast lift, tilt functions, and hydrostatic steering systems. | Smooth proportional response, zero need for external drain piping, reduced noise in tight workspaces. |
| Crawler Skid Steers & Loaders | Mini Track Loaders & Utility Carriers | Provides dual independent hydraulic flow to dual hydrostatic drive tracks. | Balanced power delivery across both tracks without drift, heavy-duty pressure tolerance. |
| Specialized Drilling Rigs | Small Foundation & Micro-Trenching Rigs | Powers rotary head feed and track carriage displacement simultaneously. | Compact physical footprint fits narrow machine frames; energy-efficient operation under variable load. |
| Agricultural Equipment | Small Crawler Tractors & Orchard Equipment | Controls primary hydraulic functions and attachments under heavy soil loads. | Robust thermal stability, low maintenance, and high resistance to shock loads and contamination. |
Related Models
▔▔| Model Code Pattern | Machine Tonnage Class | Typical Auxiliary Options | Shaft / Flange Specification | Replacement OEM Brands |
| PVD-00B-9P-1G3-4115A | 0.8 – 1.5 Ton Mini Excavator | Integrated Pilot Gear Pump | 10T / 13T Spline, SAE 2-Bolt | Kubota K008, Yanmar SV08 |
| PVD-0B-18P-6G3-4181A | 1.5 – 2.5 Ton Mini Excavator | Power Shift + Pilot Gear Pump | 13T Spline, SAE B 2-Bolt | Kubota KX41, KX018, Kobelco SK17 |
| PVD-1B-28P-11G3-4192F | 2.5 – 3.5 Ton Mini Excavator | Dual Gear Pump Mount / Block | 13T Spline, SAE B 2-Bolt | Bobcat E32/E35, Takeuchi TB230 |
| PVD-2B-36P-12G3-4530A | 3.5 – 5.0 Ton Mini Excavator | Constant Torque + Control Block | 13T / 15T Spline Flange | Yanmar ViO45, Kubota KX161 |
| PVD-3B-54P-18G3-4561A | 5.0 – 6.5 Ton Midi Excavator | Power Shift + Pilot Gear Pump | Multi-Spline, Heavy-Duty SAE | Caterpillar 305, Doosan DX60 |
FAQ
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Q1: What makes the NACHI PVD Series pump different from standard single axial piston pumps?
A: Standard axial piston pumps output flow from a single cylinder barrel group to one pressure port. The NACHI PVD series features a split-flow design that provides two equal, independent discharge flows from a single pump housing driven by one shaft. This enables independent driving of left and right travel motors on mini excavators without requiring extra flow divider valves.
Q2: Why does the NACHI PVD pump not require an external case drain line?
A: The PVD series utilizes an internal drainage system design where internal leakage fluid is safely returned internally within the low-pressure suction side or integrated manifold. This eliminates the extra drain line hose, simplifies plumbing, and lowers the overall risk of hydraulic fluid leaks.
Contact Us
▔▔Request a Quote Today to ensure your hydraulic system performs at its best with genuine components from Yanhui Hydraulic.
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