Hitachi ZX670LC-5B ZX870LC-5B ZX670LCH-5B Main Hydraulic Pump Genuine HPK300AS-14KB 9313589 9298854 For Excavator Part

Genuine HPK300AS-14KB | OEM PN: 9313589, 9298854 | Genuine / Refurbished / Aftermarket New | BELPARTS Heavy Excavator Parts

• Part Name: Tandem Variable Displacement Axial Piston Main Pump with Integrated Pilot Gear Pump, Model HPK300AS-14KB (Genuine OEM Specification)
• Official Genuine Part Numbers:
  Primary OEM Codes: 9313589, 9298854
  Cross Interchange PN: YB60000238, YB60000244, YB60000246, 9298855
  Internal Pump Model: HPK300AS-14KB
• Compatible Large Mining Excavator Models:
  Hitachi ZX670LC-5B (Standard Long Undercarriage)
  Hitachi ZX670LCH-5B (Heavy High-Lift Configuration)
  Hitachi ZX870LC-5B (Long Chassis Large Excavator)
  Also fully interchangeable with ZX670LCR-5B, ZX870LCH-5B, ZX870LCR-5B
• Available Conditions:
  ✅ Genuine Original Factory New
  ✅ Professionally Refurbished (Full Internal Wear Parts Replacement & Bench Tested)
  ✅ Premium High-Quality Aftermarket New
• Warranty Policy:
  12 months warranty for Genuine & Refurbished pumps; 6–12 months for aftermarket assemblies
• Net Weight: Approx. 410 kg
• Stock Status: In stock, shipment arranged within 3–7 working days

• Exact genuine Hitachi HPK300AS-14KB structure, perfectly matched to HIOS IIIB hydraulic control system & Isuzu 6WG1 engine power curve for Dash-5B generation heavy excavators
• Equipped with electronic proportional displacement regulator, combined load sensing + constant horsepower dual control system, reducing fuel consumption and preventing engine stall under severe mining, quarrying and bulk earthmoving loads
• Built-in pilot gear pump delivers stable control pressure for boom, arm, bucket, travel and swing hydraulic circuits
• Direct bolt-on OEM replacement design, identical mounting flange, port layout, internal oil passages and heavy-duty multi-tooth spline drive shaft; no machining or modification required during field repair installation
• Reinforced thick nodular cast iron housing, hardened cylinder block, wear-resistant piston assembly and valve plate, engineered for long-cycle harsh heavy-duty mining operation
• Every unit undergoes full pressure calibration, internal leakage inspection and overall performance bench test before delivery; 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
• Pilot Pump Output: 50 L/min, Working Pressure: 3.9 MPa
• Rotation Direction: Counterclockwise (viewed from engine input side)
• Drive Shaft: OEM-matched heavy-duty internal multi-tooth spline

• Direct Fit Models: ZX670LC-5B, ZX670LCH-5B, ZX870LC-5B
• Interchangeable Part Numbers: 9313589, 9298854, YB60000238, YB60000244, YB60000246, 9298855
• Extended Compatible Models: ZX670LCR-5B, ZX870LCH-5B, ZX870LCR-5B, ZX670-5G, ZX870-5G series excavators

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