Nachi PVD-1B-32P-11G5 4642385 4642386 hydraulic pump for Hitachi ZX27U-2 ZX27U-3 ZX29U-3 ZX30UR-2 ZX30UR-3 mini excavator
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OEM 4642385 4642386 for Hitachi ZX27U-2 ZX27U-3 ZX29U-3 ZX30UR-2 ZX30UR-3 Mini Excavator
1. Product Description
The Nachi PVD-1B-32P-11G5 is a genuine OEM variable displacement axial piston main pump, part numbers 4642385 and 4642386, engineered for Hitachi 2.7–3 ton ultra-small excavators. It delivers high efficiency, stable pressure output, low noise, and exceptional durability. Designed for tight-space operations and long working hours, it restores original machine power and fuel efficiency.
2. Key Features & Technical Specifications
Model: PVD-1B-32P-11G5
OEM Part Number: 4642385, 4642386
Pump Type: Variable displacement axial piston main pump (with gear pump)
Displacement: 32 cm³/rev (main) + 11 cm³/rev (gear)
Rated Pressure: 21 MPa
Max Working Pressure: 24 MPa
Shaft Teeth: 13 teeth
Rotation Direction: Clockwise (viewed from shaft end)
Operating Temperature: -10℃ ~ 80℃
Net Weight: 25 kg
Quality Standard: Genuine Nachi / OEM equivalent, CE certified
3. Compatibility Information
Direct bolt-on replacement, no modification required. Fits the following Hitachi mini excavator models:
Hitachi ZX27U-2
Hitachi ZX27U-3
Hitachi ZX29U-3
Hitachi ZX30UR-2
Hitachi ZX30UR-3
4. Technical Instructions
Adopts swash plate variable structure; adjusts flow automatically according to load to reduce fuel consumption.
Hardened alloy internal components minimize wear and extend service life.
Use ISO VG46 hydraulic oil; thoroughly clean the tank and pipelines before installation.
Replace filters and hydraulic oil regularly; avoid continuous overload operation.
5. Why Choose Us
Over 10 years specializing in excavator hydraulic core parts.
Supply genuine Nachi and high-quality aftermarket pumps for major brands.
Large stock in Guangzhou warehouse for fast delivery.
All products include 1-year warranty against manufacturing defects.
Multiple shipping options: express 3–7 days, sea freight 30–45 days.
6. FAQ
Q: Is this pump identical to the original 4642385 / 4642386?
A: Yes, 1:1 OEM match in dimensions, ports, and performance; direct bolt-on replacement.
Q: Do you have this pump in stock?
A: Yes, regular stock available; can ship within 1–2 business days.
Q: Can you confirm compatibility with my machine?
A: Certainly—send your excavator model or original part number for free verification.