Nachi PVD-1B-32P-11G5 4605638 4612128 hydraulic pump for Hitachi ZX30U-2 ZX35U-2 excavator
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4605638 4612128 for Hitachi ZX30U-2 ZX35U-2 Excavator
1. Product Description
This Nachi PVD-1B-32P-11G5 hydraulic pump is a professional axial piston main pump, serving as a direct OEM replacement with part numbers 4605638 and 4612128. It is precisely manufactured for Hitachi ZX30U-2 and ZX35U-2 mini excavators, featuring stable pressure output, low internal leakage and excellent wear resistance. It perfectly restores original hydraulic power and works reliably in construction, municipal and farm working environments.
2. Key Features & Technical Specifications
Model: PVD-1B-32P-11G5
OEM Part Number: 4605638, 4612128
Pump Type: Variable displacement axial piston hydraulic pump
Displacement: 32 cm³/rev
Rated Pressure: 28 MPa
Max Working Pressure: 31.5 MPa
Operating Temperature: -10℃ ~ 80℃
Net Weight: 25 kg
Certification: CE certified, conforms to OEM quality standard
Performance: Low noise, anti-leakage design, high volumetric efficiency
3. Compatibility Information
Direct drop-in replacement, no modification needed for below models:
Hitachi ZX30U-2
Hitachi ZX35U-2
4. Technical Instructions
Adopts swash plate variable displacement structure, automatically adjusts flow with load for energy saving
Precision hardened internal components improve wear resistance and anti-cavitation ability
Matches ISO VG46 hydraulic oil; clean oil circuit thoroughly before installation
Avoid long-time overloaded operation; replace hydraulic filter regularly to extend pump service life
5. Why Choose Us
Founded in 2013, over 10 years of experience specializing in excavator hydraulic core parts
Supply genuine and high-quality aftermarket parts, compatible with Hitachi, Komatsu, Doosan, Volvo, Hyundai
Own brand Belparts, exported to more than 150 countries and regions globally
Large warehouse and professional service team in Guangzhou with sufficient spot stock
1-year warranty, free replacement for quality manufacturing defects
Flexible logistics: Air/Express 3–7 days, Sea freight 30–45 days
6. FAQ
Q: Is this pump compatible with OEM 4605638 4612128?A: Yes, 1:1 fully matched, direct installation without any changes.
Q: What is your warranty term?A: 12-month warranty, free replacement for quality caused failures.
Q: Can you check compatibility for my machine?A: Yes, provide your excavator model or original part number, we offer free compatibility confirmation.