Nachi PVD-1B Series Pump | PVD-1B-32P, PVD-1B-34P, PVD-1B-24P | Mini Excavator Main Hydraulic Pump
| Model Number | PVD-1B-34P-11G5-4665A, PVD-1B-24P-11AG-4754G, PVD-1B-32P-11G5-4665C, PVD-1B-30L3S-4287F |
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Product Description
Nachi PVD-1B Series Hydraulic Main Pumps for Mini Excavators
Product Overview: The Nachi PVD-1B Series is the premier choice for mini excavator hydraulic systems worldwide. Featuring a highly compact integrated design, this series houses two variable axial piston pumps and one fixed gear pump within a single housing. Featured models like the PVD-1B-32P-11G5-4665C and PVD-1B-34P-11G5-4665A are custom-engineered for 1.5-ton to 4-ton excavators, providing 100% compatibility for leading brands such as Kubota, Komatsu, Yanmar, and Hitachi. Its exceptional reliability ensures high-efficiency operation for mini-machinery under demanding job site conditions.
Key Technical Advantages:
Triple Pump Integration: Delivers three independent hydraulic circuits via a single-shaft drive. The dual main pumps power digging and travel, while the rear gear pump (e.g., 11G5) manages pilot control or auxiliary functions, optimizing space.
High-Response Constant Power Control: Equipped with precision pressure compensation and power modulation, it adjusts flow in real-time based on load, preventing engine stalls and significantly reducing fuel consumption.
Exceptional Pressure Durability: Rated for continuous operation at 21-25 MPa (3000-3600 PSI). Core rotating groups (pistons, slippers) utilize special anti-wear alloys to ensure long service life under high-intensity digging pressures.
Quiet Operational Profile: The optimized valve plate design not only improves volumetric efficiency but also suppresses hydraulic pulsation and noise, enhancing operator comfort.
Precise Synchronization: Superior flow synchronization between the two main piston pumps ensures steady straight-line travel and seamless compound movements without drifting.
Detailed Models & Parameters:
Core Series: Nachi PVD-1B Series (Piston + Gear Combo).
Model Keywords: PVD-1B-32P-11G5-4665C, PVD-1B-34P-11G5-4665A, PVD-1B-30L3S-4287F, PVD-1B-24P-11AG-4754G.
Main Pump Displacements: 24cc, 30cc, 32cc, 34cc.
Pressure Ratings: Rated at 21-25 MPa; Peak capability up to 28 MPa.
Target Applications: Mini hydraulic excavators (1.5t – 4t), compact drilling rigs, and landscaping machinery.

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