Hitachi ZAX60 Haupt-Hydraulikpumpe – China, remanufactured (AP2D25 / 4663300)

Beschreibung

Detaillierte Informationen

1. Wesentliche Merkmale und Vorteile

• Professionally remanufactured to OEM specifications – This AP2D25 series hydraulic main pump (OEM 4663300) has been fully disassembled, cleaned, inspected, and rebuilt in our ISO‑certified facility in China. Worn components (cylinder block, piston assemblies, valve plate, swashplate, bearings, seals) are replaced with new, high‑quality parts. The result is a pump that delivers performance and reliability comparable to a new unit at a fraction of the cost.

• Original Hitachi AP2D25 tandem axial piston design – The AP2D25 is a variable displacement double (tandem) axial piston pump, combining two independent pumping units in one housing. This design powers the travel, swing, boom, arm, and bucket circuits simultaneously, providing smooth, coordinated operation for your ZAX60 (ZX60) excavator.

• Restored hydraulic power – After remanufacturing, this pump delivers rated working pressure up to 24.5 MPa (≈3,550 psi) and intermittent pressure up to 29.4 MPa (≈4,350 psi). Displacement remains 2 × 25 cm³/rev, restoring the original flow and torque characteristics of your machine.

• Integriertes Leistungsregelungs- (Load-Sensing-) System – Die wiederaufbereitete Pumpe behält das werkseitige Leistungsregelungssystem, das die Pumpenleistung an die tatsächliche Arbeitslast anpasst. Dies reduziert den Kraftstoffverbrauch, verhindert Motorabwürgen und verlängert die Lebensdauer sowohl der Pumpe als auch des Hydrauliksystems. Eine integrierte Pilot-Zahnradpumpe wird ebenfalls wiederaufbereitet, um den Steuerkreis zu versorgen.

• Direkter Schraubersatz (Plug-and-Play) – The pump’s mounting flange, drive shaft spline, and hydraulic port configurations are restored to original Hitachi specifications. No modifications, no adapters, no fabrication – your mechanic unbolts the old pump and bolts this one in.

• Kostengünstige Alternative zum neuen Original – A new genuine Hitachi main pump can cost thousands of dollars. Our remanufactured AP2D25 gives you the same fit, form, and function at a significantly lower price, without sacrificing reliability. Each pump is tested on a hydraulic test stand before dispatch.

• Sichtprüfung vor dem Versand – Vor der Verpackung senden wir Ihnen detaillierte hochauflösende Fotos des tatsächlich wiederaufbereiteten Aggregats (Montageflansch, Verzahnungen, Anschlussgewinde, Allgemeinzustand). Sie genehmigen den Versand – wir versenden niemals blind.

• Schnelle Lieferung – 5–8 Werktage Lieferzeit ab unserem Lager in Guangzhou. Monatliche Lieferkapazität von 300 Einheiten, verfügbar für Einzelstück- oder Großbestellungen.

2. Anwendungen

The remanufactured AP2D25 hydraulic main pump is ideal for Hitachi ZAX60 (ZX60) excavators used in a variety of demanding job sites:

• Stadtbau & Versorgungseinrichtungen – Sidewalk repairs, water and gas line trenching, fibre‑optic cable installation, and small‑scale demolition. The rebuilt load‑sensing control adjusts flow to match light‑duty cycles, saving fuel while maintaining precise control.

• Wohnlandschaftsbau & Poolaushub – Pool digs, retaining walls, grading, and drainage work. The tandem pump design allows independent flow to travel and attachment circuits, enabling simultaneous boom and bucket movements without power loss.

• Landwirtschaft & Landmanagement – Drainage ditch cleaning, irrigation trenching, pond maintenance, and fence post hole digging. The restored high‑pressure output provides the tractive force needed for pulling through soft, muddy fields.

• Bergbauunterstützung & Steinbruchwartung – Site cleanup, drainage maintenance, equipment pad grading, and light aggregate handling. Abrasive dust and sharp rock fragments place heavy demands on pump seals and wear components; our remanufacturing process replaces all critical wear parts to withstand these harsh conditions.

• Wartung von Gerätevermietungsflotten – Midi excavators are frequent rental items. A failed main pump stops production. 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 and customer complaints.

• – Forstwirtschaft & Vegetationsbeseitigung – Steep slopes, fallen timber, hidden obstacles. The rebuilt power control system prevents engine stall when sudden load spikes occur, maintaining consistent hydraulic power for attachment operation.

• Straßen- und Brückeninstandhaltung – Shoulder repair, guardrail replacement, drainage cleaning, and slope stabilisation. The restored tandem pump allows the operator to reposition the machine while operating the attachment – critical for roadside work with short work windows.

3. Why Choose Hongtengda Parts – Remanufacturing That You Can Trust

At Hongtengda Parts, we have been supplying and remanufacturing hydraulic pumps for excavators since 2001. We know that a main pump failure on your ZAX60 is a production‑stopping event. Our remanufacturing process is not a “clean and reseal” – it is a factory‑grade restoration.

Our 6‑step remanufacturing process:

1. Complete disassembly – The pump is stripped down to individual components (cylinder block, piston assemblies, valve plate, swashplate, bearings, shaft, housing).

2. Cleaning & crack inspection – All parts are cleaned and inspected for cracks or damage. Irreparable castings are scrapped.

3. Wear component replacement – The following are always replaced with new: all seals, O‑rings, bearings, and gaskets. The cylinder block and valve plate are re‑ground or replaced. Piston assemblies are matched and replaced as a set. The swashplate surface is reconditioned or replaced.

4. Präzisionswiederaufbau – Components are reassembled using OEM torque specifications. Clearance tolerances on the cylinder block / valve plate interface are verified.

5. Hydraulikprüfstand validiert – The completed pump is mounted to a test stand and run through its full pressure and flow range. We verify operating pressure (up to 24.5 MPa), flow rate (approx. 110‑120 L/min), case drain leakage (must be within spec), and power control response.

6. Final quality check & packaging – The pump is painted, fitted with port protection caps, and packed in a heavy‑duty wooden case.

Why our remanufactured pump outperforms cheaper “rebuilt” units:

• New bearings and seals – Many budget rebuilders reuse old bearings. We do not. All rotating components get new bearings.

• Präzisionsgeschliffene Verschleißflächen – The cylinder block and valve plate are re‑ground to restore flatness. A lapped surface is essential for low internal leakage.

• Full test report available – Upon request, we provide a test report showing pressure, flow, and case drain measurements.

What you are not buying: A used pump with new paint and a set of O‑rings. Our remanufactured pump is restored to meet or exceed OEM performance standards – at a price that makes sense for your older ZAX60.

• Über 25 Jahre Branchenerfahrung – Founded in 2001, we have remanufactured thousands of pumps for Hitachi, Caterpillar, Komatsu, Kobelco, Volvo, SANY, and many other brands.

• 90% - Verfügbarkeit auf Lager – AP2D25 series pumps are in stock as remanufactured units, ready for dispatch from our Guangzhou warehouse.

• 24-Stunden-Versand – Von unserem Hub in Guangzhou zu Ihrem Spediteur in 1 Tag; internationale Bestellungen werden innerhalb von 24 Stunden versandt.

• Sichtprüfung vor dem Versand – We never ship a pump blind. You receive clear photos of the actual unit before packing – you approve, we ship.

• Technische Unterstützung – Send us your ZAX60 machine serial number and a photo of the old pump. We confirm compatibility and provide installation guidance within 2 hours.

Send us your Hitachi ZAX60 machine serial number and a photo of the old pump – we will verify fitment, provide a quote, and document our pre‑shipment inspection within 24 hours.