HItachi ZX870-5G ZX870LC-5G ZX870H-5G ZX870LCH-5G ZX870LCR-5G Main Hydraulic Pump Genuine Refurbished HPK300AS YB60000246 YB60000230 For Excavator Part

HPK300AS | OEM PN: YB60000246, YB60000230 | Genuine / Refurbished / Aftermarket New | BELPARTS Mining Excavator Repair Parts

• Part Name: Tandem Variable Displacement Axial Piston Main Pump with Integrated Pilot Gear Pump, Model HPK300AS
• Official OEM Part Numbers:

  Primary PN: YB60000246, YB60000230

  Cross Interchange PN: YB60000244, 9298855, 9195239

  Internal Pump Model: HPK300AS

• Compatible Heavy Excavator Models:

  Hitachi ZX870-5G (Standard Chassis)

  Hitachi ZX870LC-5G (Long Undercarriage)

  Hitachi ZX870H-5G (Heavy-Duty Configuration)

  Hitachi ZX870LCH-5G (High-Lift Heavy Version)

  Hitachi ZX870LCR-5G (Reduced Swing Short Tail)

  Also fully compatible with ZX670LC-5G / ZX670LCH-5G / ZX670LCR-5G

• Available Conditions:

  ✅ Genuine Original New

  ✅ Professionally Refurbished

  ✅ Premium Aftermarket New

• Warranty Policy:

  12 months for Genuine & Refurbished pumps; 6–12 months for aftermarket assemblies

• Net Weight: Approx. 410 kg
• Stock Status: In stock, ships within 3–7 working days

• Original Hitachi HPK300AS structure, perfectly matched to HIOS IIIB hydraulic control system & Isuzu 6WG1 engine power curve for -5G generation large mining excavators
• Equipped with electronic proportional displacement regulator, combined load sensing + constant horsepower dual control system, effectively cutting fuel consumption and preventing engine stall under heavy quarry & mining loads
• Built-in pilot gear pump supplies stable control pressure for boom, arm, bucket, travel and swing hydraulic circuits
• Direct bolt-on OEM replacement, identical mounting flange, port layout, internal oil passage and multi-tooth spline drive shaft, no machining or modification required during field installation
• Reinforced thick nodular cast iron housing, hardened cylinder block, wear-resistant piston & valve plate assembly, engineered for long-cycle harsh mining operation
• Every unit undergoes full pressure calibration, internal leakage inspection and overall performance bench test; ISO9001 & CE certified

• Pump Configuration: Twin variable axial piston pump assembly
• Single Side Displacement: 300 cm³/rev
• Rated Implement Working Pressure: 31.9 MPa (319 bar)
• Maximum Travel Relief Pressure: 34.3 MPa (343 bar)
• Total Theoretical Output Flow: Approx. 1024 L/min @ 1800 RPM (2×512 L/min per pump side)Hitachi Construction Machinery
• Pilot Pump Output: 50 L/min, working pressure 3.9 MPaHitachi Construction Machinery
• Rotation Direction: Counterclockwise (viewed from engine input side)
• Drive Shaft: Heavy-duty customized internal multi-tooth spline consistent with OEM dimension

• Direct Fit Models: ZX870-5G, ZX870LC-5G, ZX870H-5G, ZX870LCH-5G, ZX870LCR-5G
• Interchangeable Part Numbers: YB60000230, YB60000246, YB60000244, 9298855, 9195239
• Extended Compatible Models: ZX670LC-5G, ZX670LCH-5G, ZX670LCR-5G, ZX690-5A, ZX690-5B, ZX890-5A, ZX890-5B

• Over 13 years specialized in hydraulic pumps for 60–90 ton Hitachi large mining excavators
• Three quality grades optional: genuine original Hitachi unit, professionally refurbished pump with replaced wearing parts, cost-effective aftermarket replacement
• Rigorous pre-delivery QC procedure: full pressure testing, internal leakage detection and efficiency verification before shipment
• Adequate inventory stored in Guangzhou warehouse, flexible sea freight & air freight global shipping solutions
• Professional engineering team provides on-site installation troubleshooting and long-term technical after-sales support
• Economical cost-saving alternative vs expensive Hitachi genuine OEM spare parts