Hitachi ZAX60‑5G Main Hydraulic Pump – China Remanufactured (PVD-2B-50P-20G5-5312B / 4200006)

Description

Detail Information

1. Key Features & Benefits

• Original Kawasaki PVD‑2B series design – This pump (OEM 4200006, model PVD-2B-50P-20G5-5312B) is a variable displacement axial piston pump built by Kawasaki specifically for 6‑ton class excavators like the Hitachi ZAX60‑5G, ZX60‑5G, and ZX65‑5G. It powers the boom, arm, bucket, swing, and travel circuits with smooth, responsive hydraulic flow.

• Fully remanufactured to factory specifications – The pump has been completely disassembled, cleaned, crack‑inspected, and rebuilt in our ISO‑certified facility. All wear components – cylinder block, piston assemblies, valve plate, swashplate, bearings, and seals – are replaced with new, high‑quality parts. The result is performance and reliability comparable to a new unit at a fraction of the cost.

• Restored 6‑ton class hydraulic power – After remanufacturing, this pump delivers a rated working pressure of up to 27.5 MPa (≈3,990 psi) and a flow matched to the ZAX60‑5G‘s Isuzu 4LE2‑X engine (46 kW at 2,200 rpm). Your excavator regains full digging force, fast cycle times, and precise attachment control.

• Integrated load‑sensing (power control) system – The factory control system is fully rebuilt and calibrated. It continuously matches pump output to actual working demand, reducing fuel consumption, preventing engine stall under sudden load, and extending the life of the hydraulic system. The integral pilot gear pump is also remanufactured.

• New bearings and precision‑ground wear surfaces – All bearings are replaced – never reused. The cylinder block and valve plate are re‑ground to restore flatness to within 0.002 mm, ensuring minimal internal leakage, cooler oil, and better efficiency.

• Direct bolt‑on replacement – Mounting flange, drive shaft spline, and hydraulic port configurations are restored to original Hitachi/Kawasaki specifications. No modifications, no adapters – your mechanic unbolts the old pump and bolts this one in.

• Hydraulic test stand validated – Each remanufactured pump is run on a test stand to verify rated pressure, flow, case drain leakage, and control response. A test report is available upon request.

• Pre‑shipment visual verification – We send you clear, high‑resolution photographs of the actual pump (mounting flange, splines, port threads, castings) before packing. You approve – we ship. Never blind.

• Fast delivery – 5–8 working days from our Guangzhou warehouse. Monthly capacity 300 units.

2. Applications

The remanufactured Hitachi ZAX60‑5G main pump is ideal for 6‑ton class mini excavators used in a variety of job sites:

• Urban construction & utilities – Sidewalk repairs, water/gas line trenching, fibre‑optic cable installation. The pump’s load‑sensing control provides precise flow for delicate digging near existing utilities while offering enough power for breaking compacted surfaces.

• Residential landscaping & pool excavation – Pool digs, retaining walls, grading, and drainage work. The pump’s smooth response and quiet operation are essential for noise‑sensitive neighbourhoods.

• Agriculture & land management – Drainage ditch cleaning, irrigation trenching, pond maintenance, and fence post holes. The pump’s high pressure (27.5 MPa) provides the attachment power needed for augers, trenchers, and rippers.

• Mining support & quarry maintenance – Site cleanup, equipment pad grading, and light aggregate handling. Abrasive dust and vibration demand robust seals and bearings – our reman process delivers new components to withstand these harsh conditions.

• Equipment rental fleet – Mini excavators are the most frequently rented machines. A remanufactured pump offers predictable service life (3,000–5,000 hours) at a cost that makes proactive replacement financially sensible – avoiding costly mid‑rental failures.

• Forestry & vegetation clearance – Steep slopes, fallen timber, hidden obstacles. The integral power control prevents engine stall under sudden load spikes, maintaining consistent power for saws, grapples, and mulchers.

3. FAQ – Frequently Asked Questions

Q1: Is this pump an exact replacement for my ZAX60‑5G?
A: Yes. The PVD-2B-50P-20G5-5312B (OEM 4200006) is the factory‑spec main pump for Hitachi ZAX60‑5G, ZX60‑5G, and ZX65‑5G. It also fits ZAX60‑5A, ZX60‑5B, and ZX70‑5A with cross‑reference verification. To confirm compatibility, send us your machine serial number and a photo of the old pump nameplate – we will verify within 2 hours.

Q2: Is this a new pump or a remanufactured unit?
A: It is professionally remanufactured. All internal wear components (bearings, seals, cylinder block, valve plate, pistons) are replaced or re‑ground to OEM specs. The result is a pump that performs like new – at a fraction of the cost.

Q3: Do you offer a warranty?
A: Warranty period is 3 to 6 months depending on product details. We do not provide warranty service for original used or remanufactured parts. Our value is delivered upfront: careful remanufacturing, thorough testing, and pre‑shipment visual verification. For customers who require a warranty‑covered option, we can quote new aftermarket units – ask our sales team.

Q4: How long does delivery take?
A: Delivery is 5–8 working days after order confirmation from our Guangzhou warehouse. Express shipping (DHL/FedEx/UPS) is available for urgent orders.

Q5: What payment methods do you accept?
A: We accept T/T (wire transfer), XTransfer, PayPal, and Western Union.

Q6: How can I verify the pump is ready before shipping?
A: Before packing, we send you clear, high‑resolution photographs of the actual unit – mounting flange, splines, port threads, casting marks, and overall condition. You approve shipment only after reviewing these images. We never ship blind.

Q7: What oil should I use with this pump?
A: Hitachi recommends ISO VG 46 hydraulic oil for standard temperatures. For high‑temperature environments or continuous heavy duty, ISO VG 68 is recommended. Always refer to your machine operator‘s manual.

Still have questions? Contact Hongtengda Parts – we reply within 24 hours.

Critical installation tip for the PVD-2B-50P remanufactured pump:
– Case drain line must be unrestricted. Blow compressed air through it before connecting. A blocked drain will blow the shaft seal instantly on first start.
– Before installing the remanufactured pump, flush the hydraulic system and replace all filters. Contaminants from a failed pump will destroy a reman just as fast as a new one.
– Use new O‑rings and sealing washers on every hydraulic connection. Reused seals guarantee leaks.
– After installation, idle for 2–3 minutes, then slowly cycle each function to purge air. Do not operate at full load for the first 10 minutes.
– Check pump alignment with the engine flywheel housing – misalignment causes bearing failure.

The main hydraulic pump is the heart of your ZAX60‑5G’s hydraulic system. Our remanufactured PVD-2B-50P delivers 6‑ton class performance at a cost that keeps your budget intact. Send us your ZAX60‑5G machine serial number – we will confirm compatibility and provide a quote within 24 hours.