Nachi Parts PVD-2B-32

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Product details

Nachi PVD-2B-32 Parts

Core Components & Functions

• Cylinder Block: Serves as the main structure of the hydraulic pump, crafted from high-strength cast iron to withstand high-pressure oil shocks. Integrated multiple plunger bores ensure stable hydraulic oil transmission.

• Plunger: Precision-machined piston component driven by a swashplate for reciprocating motion, converting hydraulic energy into mechanical energy. Directly impacts pump displacement and efficiency.

• Port Plate: Critical component controlling oil inlet/outlet channels, featuring noise-reduction design to minimize pulsation vibration and reduce operational noise (typical noise ≤65dB).

Technical Parameters & Performance

• Model Specifications: PVD-2B-32 belongs to NACHI's PVD series variable displacement pumps, compatible with 1-6 ton excavators, especially optimized for 3-3.5 ton models (e.g., Hitachi EX10-3, Takeuchi TB135C, IHI 35J).

• Performance Metrics:

• Max operating pressure 24.5MPa, max speed 2800rpm, displacement range 8-33cm³/rev (twin-pump design delivers dual equal flows, ensuring excavator straight-line travel).

• Constant power control as standard, optimizing engine power utilization to enhance operation speed and energy efficiency (fuel consumption reduced by ~15%).

• Internal drainage structure eliminates need for external piping, compact dimensions (e.g., PVD-2B-32L total length ≤400mm) fit confined engine compartments.

Compatible Models & Compatibility

• Mainstream Compatible Models: Hitachi EX10-3/ZAXIS35U, Takeuchi TB135C/TB035, IHI 35J/40J, Komatsu PC35MR-2, and other 3-3.5 ton mini excavators.

• Compatibility Alternatives: Can replace certain models of Rexroth A4VG and Kawasaki K3V series, pending verification of seal dimensions and oil circuit interface matching. Third-party suppliers (e.g., Hebei Xiaozhong Machinery, Guangzhou Baiyue) offer compatible parts but require ISO certification for quality assurance.

Installation & Maintenance Essentials

• Installation Standards:

• Precise alignment of pump body with host frame required; bolt tightening torque must meet specifications (e.g., M12 bolts: 80-100N·m) to prevent seal failure.

• Hydraulic line connections require pressure testing (1.5× operating pressure) to ensure leak-free performance.

• Maintenance Practices:

• Inspect plunger-to-cylinder clearance every 500 hours; replace if wear exceeds 0.03mm. Repair or replace port plate if surface scratch depth >0.02mm.

• Regular hydraulic oil changes (NACHI-recommended oil) and filter cleaning to prevent valve jamming from contamination.

• Troubleshooting: Low pressure may stem from plunger wear or port plate seal failure; abnormal noise requires checking bearing and swashplate lubrication.

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