Nachi PVD-2B-44BP-16G5-5810A 1000099565 hydraulic pump for Neuson 50Z3 RD mini excavator
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For: Wacker Neuson 50Z3 RD Mini Excavator
OEM Part No.: PVD-2B-44BP-16G5-5810A, 1000099565, 1000178174
Brand: Nachi (Japan)
Quality Grade: Genuine OEM / High-Quality Aftermarket
Warranty: 12 Months
Stock: In Stock, Fast Delivery
1. Main Specifications
Type: Axial Piston Main Pump (Tandem, with pilot gear pump)
Model: PVD-2B-44BP-16G5-5810A
Displacement: 44 cm³/rev (22 cm³ × 2, twin pump)
Rated Pressure: 24.5 MPa (3,550 psi)
Max Pressure: 29.4 MPa (4,260 psi)
Rated Speed: 2,400 rpm
Max Speed: 2,600 rpm
Control: Constant horsepower, load sensing, with power shift (BP)
Integrated: Pilot gear pump (16G5)
Weight: ~22 kg
Application: 5 ton mini excavator hydraulic system
2. OEM & Interchange Part Numbers
PVD-2B-44BP-16G5-5810A: Original Nachi assembly
1000099565: Wacker Neuson primary OEM number
1000178174: Wacker Neuson secondary OEM number (replaces old version)
PVD-2B-44BP-16G5-5198A: Interchangeable older variant
All numbers are direct bolt-on replacements for 50Z3 RD.
3. Compatible Models
Wacker Neuson 50Z3 RD (2005–2012)
Wacker Neuson 50Z3 (standard/ canopy/ cab versions)
Wacker Neuson EZ50 / ET50
Also fits: Yanmar VIO50, Takeuchi TB250
4. Key Advantages
Genuine Nachi Precision: Factory-tested for 5-ton class excavator performance
Twin Pump Design: Balanced flow for smooth travel & work functions
Hardened Components: Wear-resistant cylinder block & piston shoes
Integrated Pilot Pump: Compact, reliable control pressure supply
Exact OEM Fit: No modification needed, direct installation
High Efficiency: Low noise, low vibration, reduces fuel consumption
5. Supply Details
Condition: New OEM / Aftermarket / Remanufactured
Packing: Anti-rust wooden export crate
Lead Time: 3–7 working days
Shipping: Sea, air, or express (DHL/FedEx)
6. FAQ
Q: Are 1000099565 and 1000178174 the same pump?
A: Yes—1000178174 is the updated Wacker Neuson part number superseding 1000099565; both reference the same Nachi PVD-2B-44BP pump.
Q: Will this fit older 50Z3 units (pre-2008)?
A: Yes, it’s the standard main pump for all 50Z3 RD models; confirm serial number range if unsure.
Q: Do you offer repair kits for this pump?
A: Yes—complete seal kits, piston groups, valve plates, and bearing sets in stock.