Pompa Idraulica Principale Hitachi EX200-5 – Rimanufatturata in Cina (Assemblaggio Hefei: 9150726 / 9152668)

Descrizione

Informazioni dettagliate

1. Caratteristiche e vantaggi principali

• Precision‑remanufactured for Hefei‑assembled EX200‑5 – This twin pump set (9150726 / 9152668) is specifically rebuilt to Hitachi‘s factory specifications for the locally produced (Hefei) EX200‑5 excavator. Every critical component – cylinder block, piston assemblies, valve plate, swashplate, bearings, and seals – is either renewed or replaced with new, high‑quality parts. The result is restored hydraulic performance at a fraction of the cost of a new genuine pump set.

• Original Hitachi tandem axial piston architecture – The two pumps work together as a variable displacement tandem system, powering travel, swing, boom, arm, and bucket circuits independently. This design ensures smooth, coordinated multi‑function operation without internal flow loss – exactly as your EX200‑5 performed when it left the Hefei assembly line.

• Restored 20‑ton class power – After remanufacturing, the pump set delivers a rated working pressure of 31.9 MPa (≈4,630 psi) with intermittent peaks up to 34.3 MPa (≈4,975 psi). Combined flow is approximately 360‑400 L/min at rated engine speed. Your excavator regains full digging force, fast cycle times, responsive swing, and powerful travel.

• Controllo di potenza con sensore di carico integrato – Il sistema di controllo della potenza (load-sensing) di fabbrica è completamente ricostruito. Esso adatta continuamente l'uscita della pompa alla richiesta di lavoro effettiva, riducendo il consumo di carburante, prevenendo lo stallo del motore sotto carico improvviso e prolungando la durata dell'intero sistema idraulico. Anche la pompa pilota a ingranaggi integrata è completamente ricostruita.

• Alternativa economica al nuovo originale – A new Hitachi main pump set for a 20‑ton excavator is a major investment. Our remanufactured 9150726 / 9152668 gives you the same fit, form, and function at a significantly lower price, without sacrificing reliability. Each pump is dyno‑tested before dispatch.

• Sostituzione diretta a bulloni – Mounting flanges, drive shaft splines, and hydraulic port configurations are restored to original Hefei‑spec Hitachi dimensions. No modifications, no adapters, no fabrication – your mechanic unbolts the old pumps and bolts these in.

• Verifica visiva pre-spedizione – We send you clear, high‑resolution photographs of the actual remanufactured units (mounting flanges, splines, port threads, castings, overall condition) before packing. You approve shipment – we never ship blind.

• Consegna veloce – 5–8 working days from our Guangzhou warehouse. Monthly supply capacity of 300 sets, available for single‑set or bulk orders.

2. Applicazioni

The remanufactured Hitachi 9150726 / 9152668 main pump set is ideal for the Hefei‑built EX200‑5 (20‑ton class) used in demanding job sites:

• Edilizia pesante e infrastrutture – Highway excavation, dam building, bridge footings, large‑scale earthmoving. The restored tandem pumps deliver simultaneous boom, arm, and travel power without internal leakage – no power fade, no sluggish response, even on long shifts.

• Cave e aggregati – Loading trucks, stockpile management, and material handling in abrasive dust conditions. New bearings, seals, and wear plates ensure the pumps survive where worn units fail. Consistent flow and pressure mean faster cycle times and lower fuel consumption.

• Supporto minerario – Site cleanup, road maintenance, drainage works, and equipment pad grading. The load‑sensing control reduces fuel burn during light‑duty cycles, saving money over thousands of operating hours.

• Demolizione e trattamento rottami – Shock loads and vibration are routine. Our remanufacturing process replaces all wear components, restoring the pumps‘ ability to withstand harsh, unpredictable conditions.

• Flotte di noleggio attrezzature – 20‑ton excavators are rental workhorses. A remanufactured pump set offers predictable service life (3,000–5,000 hours) at a cost that makes proactive replacement financially sensible – avoiding costly mid‑rental failures, towing bills, and customer complaints.

• – Attività forestali e disboscamento – Steep slopes, fallen timber, hidden obstacles. The integral power control prevents engine stall under sudden load spikes, maintaining consistent hydraulic power for saws, grapples, and mulchers.

3. Why Choose Parti di Hongtengda – Remanufacturing Without Compromise

At Hongtengda Parts, we have been remanufacturing hydraulic pumps for Hitachi excavators since 2001. We know that a main pump failure on your EX200‑5 stops your job site completely. Our remanufacturing process is not a “clean and reseal” – it is a factory‑grade restoration.

Il nostro processo di ricostruzione in 6 fasi:

1. Smontaggio completo – Each pump is stripped down to individual components: cylinder block, piston assemblies, valve plate, swashplate, bearings, shaft, housing, and control valves.

2. Pulizia e controllo cricche – Tutte le parti vengono accuratamente pulite e ispezionate per individuare cricche utilizzando il test con liquido penetrante sulle fusioni critiche. Le parti irreparabili vengono scartate.

3. Sostituzione dei componenti d’usura – All seals, O‑rings, bearings, and gaskets are replaced with new. The cylinder block and valve plate are re‑ground to restore flatness. Piston assemblies are matched as a set and replaced if worn. The swashplate surface is reconditioned.

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

5. Convalida su banco prova idraulico – The completed pump set is mounted to a test stand and run through its full pressure and flow range. We verify operating pressure (up to 31.9 MPa), flow rate (approx. 360‑400 L/min total), case drain leakage, and power control response. A test report is available upon request.

6. Controllo qualità finale e imballaggio – The pumps are painted, fitted with protective port caps, and packed in a heavy‑duty wooden case for export.

Perché la nostra pompa ricostruita supera le unità “ricondizionate” più economiche:

• Nuovi cuscinetti e guarnizioni – Molti ricondizionatori economici riutilizzano i vecchi cuscinetti per risparmiare sui costi. Noi no. Tutti i componenti rotanti ricevono nuovi cuscinetti – il singolo fattore più importante per la longevità della pompa.

• Superfici di usura rettificate di precisione – Il blocco cilindri e il piatto valvole vengono rettificati nuovamente per ripristinare la planarità. Una superficie lappata è essenziale per basse perdite interne. Senza di essa, la pompa si surriscalderà e perderà potenza nel giro di poche settimane.

• Rapporto di prova completo – Su richiesta, forniamo un rapporto di prova che mostra pressione, portata, drenaggio della cassa e misurazioni della temperatura. Vedete i dati prima di acquistare.

Cosa non stai acquistando: A used pump with new paint and a set of O‑rings. Our remanufactured pump set is restored to meet or exceed OEM performance standards – at a price that makes sense for your older EX200‑5.

• Oltre 25 anni di esperienza nel settore – Fondata nel 2001, abbiamo ricostruito migliaia di pompe per Hitachi, Caterpillar, Komatsu, Kobelco, Volvo, SANY e molte altre marche.

• Disponibilità a magazzino 90% – 9150726 / 9152668 pump sets are in stock as remanufactured units, ready for dispatch from our Guangzhou warehouse.

• Spedizione in 24 ore – Dal nostro hub di Guangzhou al vostro spedizioniere in 1 giorno; ordini internazionali spediti entro 24 ore.

• Verifica visiva pre-spedizione – We never ship a pump blind. You receive clear photos of the actual units before packing – you approve, we ship.

• Assistenza tecnica – Send us your EX200‑5 (Hefei) machine serial number and photos of the old pumps. We confirm compatibility and provide installation guidance within 2 hours.

Send us your Hefei‑built EX200‑5 machine serial number and photos of the old pumps – we will verify fitment, provide a quote, and document our pre‑shipment inspection within 24 hours.

Critical installation tip for the 9150726 / 9152668 remanufactured pump set:
– I linea di drenaggio della cassa on each pump must be clear and unrestricted. A blocked case drain will blow the shaft seal instantly on first startup.
– Before installing the remanufactured pumps, flush the entire hydraulic system and replace all filters. Contaminants from the failed pumps will destroy a remanufactured unit just as quickly as a new one.
– Utilizzare O-ring e rondelle di tenuta nuovi su ogni collegamento idraulico. Guarnizioni riutilizzate garantiscono perdite.
– After installation, run the engine at low idle for 2–3 minutes with the pumps in neutral, then slowly cycle each function (boom, arm, bucket, swing, travel) to purge air from the system.
– Controllare l'allineamento della pompa con l'alloggiamento del volano del motore – il disallineamento causa guasti prematuri ai cuscinetti e perdite dalla tenuta dell'albero.

Nota sulla garanzia: Il periodo di garanzia è da 3 a 6 mesi, a seconda dei dettagli del prodotto. Non forniamo servizio di garanzia per parti usate originali o ricostruite. Il nostro valore è fornito in anticipo: ricostruzione accurata, test approfonditi e verifica visiva pre-spedizione. Per i clienti che richiedono un'opzione coperta da garanzia, possiamo quotare nuove unità aftermarket – chiedete al nostro team vendite.

The main hydraulic pump set is the heart of your EX200‑5‘s hydraulic system. Our remanufactured 9150726 / 9152668 gives you restored 20‑ton class performance at a cost that keeps your budget intact – not with shortcuts, but with a genuine factory‑grade restoration. Send us your Hefei EX200‑5 machine serial number – we will confirm compatibility and provide a quote within 24 hours.