Pompe hydraulique Hitachi HPV145KX YB60001419 pour excavateur Hitachi ZX350LCN-6 ZX350N-6

ZX350LCN‑6 ZX350N‑6 Hydraulic Pump HPV145KX for Excavator spare parts Aftermarket

Product Overview

The Hitachi ZX350LCN‑6 and ZX350N‑6 are 35‑ton machines built for serious production — heavy earthmoving, quarry loading and large‑scale site excavation where a single lost hour matters. The HPV145KX main pump is the component that converts the engine's output into the hydraulic flow every digging, lifting and travel movement depends on. On a machine at this size class, pump wear does not arrive quietly: cycle times stretch, the boom lifts slower at reach, travel bogs on grades, the hydraulic oil climbs to abnormal temperatures, and a deepening mechanical note from the pump area confirms that internal leakage is taking over. Once that process starts, running the machine at full rate accelerates scoring of the cylinder block and valve plate, and contamination from worn parts then circulates into valves and motors elsewhere. This aftermarket HPV145KX is built to the original geometry and control calibration, so the worn pump can be exchanged directly, restoring the ZX350‑6 series to its rated output and protecting the rest of the hydraulic circuit.

Core Advantages

1. Full‑rate output that restores lost production
The HPV145KX carries the displacement a 35‑ton machine needs. Once a worn pump is replaced, operators notice the recovery on the very first dig — cycle times return, and the machine stops "downshifting" its own performance as the day goes on.

2. Hardened running surfaces for sustained heavy duty
Piston shoes, cylinder block and valve plate are engineered for the pressures a quarry or mass‑excavation machine generates. Tight finished clearances keep internal leakage low, holding pressure steady through long shifts and reducing hydraulic heat.

3. Regulator behaviour matched to the Hitachi power package
The pump's control follows the original calibration, so it loads the engine smoothly and delivers flow where and when the demands on the levers call for it. Digging power stays consistent without the overheating characteristic of poorly matched pumps.

4. Direct‑fit changeover on a machine earning high daily rates
On a 35‑ton excavator, downtime costs real money. The pump reproduces the original flange, spline and port positions, so removal and refitting follow the standard service sequence — no adapters, no pipework changes.

5. A sound aftermarket alternative for high‑hour fleets
For a ZX350‑6 that is otherwise mechanically sound, pump renewal is the highest‑return repair available. This aftermarket unit delivers dependable performance well below the cost of an original exchange, with sample and batch supply for workshops running several of these machines.

Manufacturing & Quality Control

Production is controlled end to end: incoming material verification, precision machining, heat treatment of wear surfaces and clean assembly. Each finished pump is bench‑tested for pressure output, flow rate and running noise before packing, and only units meeting the acceptance criteria are released. Anti‑rust preservation and shock‑absorbing export packing protect the assembly through long‑distance sea and land transport; batch test data can be supplied on request.

Frequently Asked Questions

Q1: How do I confirm this pump suits my machine?
A: Check the model tag on your existing HPV145KX pump and share your machine serial number. The LCN‑6 and N‑6 variants share this pump platform, but build differences can occur, so we verify before dispatch.

Q2: Can I reuse the existing regulator and pipes?
A: Yes — the pump matches the original control interface and port layout, so existing piping and a serviceable regulator transfer directly. Damaged regulator components are available separately.

Q3: What should be done to the hydraulic system when fitting this pump?
A: Renew the hydraulic oil and filters, flush contamination from the circuit, bleed the system after installation and run a no‑load warm‑up before returning to full production.

Q4: What is the warranty coverage?
A: Manufacturing and material defects are covered. Damage from contaminated oil, wrong fluid, foreign objects in the circuit, overload operation or incorrect installation is excluded; please follow the Hitachi service manual for commissioning.