Hitachi HPK300 Main Hydraulic Pump – China Remanufactured (9298854 / YB60000246)

Description

Product Video

Detail Information

Note: The application information provided is for reference only. Please confirm the part number and compare it with the old component before purchasing. If you have any questions, please feel free to contact us.
It is worth choosing a product that features stable performance, high reliability, easy installation, and quick response.

1. Key Features & Benefits

• HPK300 series – Hitachi’s heavy‑duty hydraulic platform – This pump is a variable displacement axial piston pump from Hitachi’s HPK series, designed specifically for 70–85 ton class excavators. It delivers the massive flow and pressure required for high‑production mining, quarrying, and large‑scale earthmoving operations.

• Professionally remanufactured to OEM 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.

• Massive flow for 70–85 ton class machines – The ZX870‑5G hydraulic system delivers up to 2 × 512 L/min from its main variable displacement axial piston pumps. The HPK300 is engineered to handle this immense flow, providing the hydraulic power needed for fast cycle times, high bucket fill factors, and responsive multi‑function operation – even when simultaneously booming, swinging, and travelling.

• High‑pressure capability – Rated for Hitachi’s HIOS IIIB hydraulic system with main relief pressures of 34.3 MPa (≈4,975 psi). This pressure capability delivers consistent digging force, swing torque, and travel power hour after hour in the most demanding applications.

• Integrated load‑sensing power control – 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 entire hydraulic system. For a machine consuming over 360 kW (483 HP), this efficiency translates directly to lower operating costs.

• 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, ensuring minimal internal leakage, cooler oil, and better efficiency. On a pump of this size, even small improvements in internal leakage translate to significant fuel savings over thousands of operating hours.

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

• Substantial, heavy‑duty construction – The complete pump assembly weighs approximately 350–400 kg, with gross weight of 420–450 kg including packaging. Dimensions are approximately 800–850 mm in length, 500–550 mm in width, and 600–650 mm in height. This is a substantial component built for the toughest conditions.

• 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 HPK300 main pump is the power source for 70–85 ton class excavators used in the most demanding heavy industries:

• Large‑scale open‑pit mining – In copper, gold, iron ore, and coal mines, 70–85 ton excavators load 100+ ton haul trucks in 20+ hour shifts. The HPK300’s massive flow and high‑pressure capability (34.3 MPa) deliver fast cycle times and consistent production. A pump with restored volumetric efficiency holds full power all day – no mid‑shift power fade, no longer cycle times, no production loss. In remote mine sites where service support is limited, a remanufactured pump with new bearings and seals provides the reliability needed to keep production moving.

• Heavy civil & infrastructure – Dam construction, highway cuts, tunnel portals, and large‑scale earthmoving projects demand consistent multi‑function hydraulic power. The HPK300’s load‑sensing control delivers smooth, responsive operation whether you’re excavating rock, loading trucks, or fine‑grading surfaces. The restored pump ensures your machine performs at its peak, reducing project timelines and fuel costs.

• Quarrying & aggregates – Granite, limestone, and basalt operations subject the hydraulic system to extreme shock loads and abrasive dust. New bearings, seals, and precision‑ground wear surfaces ensure the pump survives where worn units fail. Consistent flow and pressure mean faster loading cycles, higher production, and lower cost per ton.

• Demolition & scrap processing – Shock loads and vibration are routine in demolition yards and metal recycling facilities. The HPK300’s cast iron housing and hardened internal components absorb impacts that would crack inferior castings. Our remanufacturing process replaces all wear components, restoring the pump’s ability to withstand harsh, unpredictable conditions.

• Large‑scale earthmoving & site preparation – Major earthmoving projects – airport construction, port development, land reclamation – demand machines that can work long hours without interruption. A remanufactured HPK300 offers predictable service life (3,000–5,000 hours) at a cost that makes proactive replacement financially sensible, avoiding costly unplanned downtime.

3. Stock Availability – Hongtengda Parts

Your ZAX870‑5G does not care about supply chain excuses. Neither do we. At Hongtengda Parts, we keep remanufactured HPK300 pumps (9298854 / YB60000246) in stock at our Guangzhou warehouse – not in a supplier’s backlog, not on a slow boat from another continent.

Why availability matters: A main pump failure on an 80‑ton excavator stops production completely. No boom raise, no swing, no travel. The difference between a 5‑day emergency repair and a 24‑hour pit stop is one phone call – when the part is on our shelf.

• 300 pieces monthly supply capacity – Stable production and deep stock levels for the HPK300 pump

• 90% of our catalog in stock – Ready for immediate dispatch from our Guangzhou warehouse

• 24‑hour shipment – From our Guangzhou hub to your forwarder in 1 day; international orders shipped within 24 hours

• Professional export packaging – Heavy‑duty fumigation‑free wooden cases with internal bracing and foam padding for sea or air freight

• No MOQ pressure – One piece is enough to place an order

• Real‑time stock check – Email or message us anytime to confirm availability before payment

Why wait weeks for parts? Hongtengda Parts – where inventory meets urgency.