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Genuine HPK300AS-14KB | OEM PN: 9313589, 9298854 | Genuine / Refurbished / Premium Aftermarket New | BELPARTS Large Mining Excavator Parts
1. Basic Information
Part Name: Twin Variable Displacement Axial Piston Main Pump with Integrated Pilot Gear Pump, Model HPK300AS-14KB (Hitachi Genuine OEM Specification)
Official Genuine Part Numbers:
Primary OEM Codes: 9313589, 9298854
Cross Interchange PN: YB60000238, YB60000244, YB60000246, 9298855
Internal Pump Model: HPK300AS-14KB
Full Compatible Excavator Models:
Hitachi ZX670LC-5B (Standard Long Undercarriage)
Hitachi ZX670LCH-5B (Heavy High-Lift Configuration)
Hitachi ZX870LC-5B (Long Chassis Large Excavator)
Hitachi ZX870-5B (Standard Base Chassis)
Hitachi ZX870H-5B (Heavy-Duty Reinforced Version)
Hitachi ZX870LCR-5B (Reduced Swing Short Tail Design)
Hitachi ZX870LCH-5B (Heavy High-Lift Long Carriage)
Also interchangeable with ZX670LCR-5B, ZX670-5G, ZX870-5G series excavators
Available Product Conditions:
✅ Genuine Original Factory New
✅ Professionally Fully Refurbished (All Wearing Parts Replaced + Bench Calibrated)
✅ High Precision Premium 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, shipped out within 3–7 working days after order confirmation
2. Key Features
Exact original Hitachi HPK300AS-14KB internal structure, perfectly matched to HIOS IIIB hydraulic control system & Isuzu 6WG1 engine power curve for Dash-5B generation heavy mining excavators
Equipped with electronic proportional displacement regulator, combined load sensing + constant horsepower dual control system, cutting fuel consumption and preventing engine stall under severe mining, quarrying and bulk earthmoving heavy loads
Built-in pilot gear pump supplies stable control pressure to operate boom, arm, bucket, travel and swing hydraulic circuits steadily
Direct bolt-on OEM replacement design, identical mounting flange, port layout, internal oil passage routing and heavy-duty multi-tooth spline drive shaft; no cutting, machining or modification required during field repair installation
Reinforced thick nodular cast iron pump housing, hardened cylinder block, wear-resistant piston assembly and valve plate, engineered for long-cycle harsh continuous mining operation
Every unit undergoes full pressure calibration, internal leakage inspection and overall performance bench test before delivery; ISO9001 & CE certified
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 before shipment
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
6. FAQ
Q1: Does this HPK300AS-14KB pump fit all seven listed -5B machine variants?
A: Yes, 9313589 / 9298854 universal main pump assembly is fully compatible with standard chassis, long carriage, heavy-duty, high-lift, reduced-swing all ZX670/ZX870-5B configurations.
Q2: What is the relationship between part number 9313589 and 9298854?
A: They are superseded upgraded interchange genuine part numbers for the identical HPK300AS-14KB main pump assembly, fully interchangeable for field repair replacement.
Q3: What is the difference between Refurbished and Genuine New pump?
A: Refurbished pump replaces all worn internal consumable parts (piston, valve plate, cylinder block, oil seals), fully bench-calibrated to OEM performance standard with competitive price; Genuine New is original factory brand-new assembly complying with full OEM specification.
Q4: What is your delivery lead time?
A: Products are ready in stock, dispatched within 3–7 working days after order confirmation; global sea & air shipping options available.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2013
Total Annual:
$28000000-$41660000
Employee Number:
1200~1300
Ecer Certification：
Verified Supplier
Since 2013
Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013
Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts
Who We Are
Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha...
Since 2013
Excavator Hydraulic Parts Manufacturer & Global Supplier Since 2013
Belparts Machinery Limited — Your Trusted Partner in Excavator Hydraulic Parts
Who We Are
Founded in September 2013 and headquartered in Guangzhou, China's premier engineering machinery hub, Belparts ha...
