Hydraulic Pump 708-2K-00120 Fan Motor Komatsu

Product Overview

708-2K-00120 hydraulic fan motor is OEM-grade ultra-heavy-duty cooling replacement part precisely engineered for Komatsu PC400-7 and PC450-7 extra large-sized excavators.

Serving as the high-displacement core power assembly of the heavy-duty radiator cooling system built exclusively for these 40-to-45-ton class mining-class excavators, this electro-proportional hydraulic fan motor intelligently adjusts fan rotational speed in response to real-time variations in high-power engine coolant and heavy-load internal hydraulic oil temperatures. It delivers exceptionally stable and reliable heat dissipation across the most demanding heavy construction scenarios, including large-scale open-pit mining overburden removal, deep quarry rock excavation, major port earthworks, large-scale dam construction and heavy industrial foundation projects. Adaptive speed regulation effectively prevents high-displacement engine thermal overload during prolonged extreme heavy-load excavation cycles, and optimizes fuel efficiency by cutting unnecessary high-speed fan rotation during intermittent idle periods on large mining sites.

Product Highlights

✅ 40-45 Ton Mining-Class High-Displacement Calibrated Proportional Speed System

Purpose-built ultra-high-torque large-displacement heavy-duty proportional solenoid achieves smooth stepless speed adjustment tailored to the extreme heavy-load thermal characteristics of PC400-7 and PC450-7 mining excavators. High-displacement output delivers massive cooling capacity during sustained deep rock excavation, and automatically lowers during frequent work pauses to reduce idle power wastage and long-term heavy fuel expenditure.

✅ High-Precision Heavy-Duty OEM Mounting for Extra Large Engine Compartments

Ultra-heavy-duty reinforced thick mounting flanges, accurately machined large-diameter heavy hydraulic port threads and matched heavy-duty large shaft splines perfectly fit the extra large engine bay layout of both mining excavator models. No on-site heavy metal cutting or large hydraulic pipeline rework is required during replacement, significantly shortening critical equipment downtime for major mining and heavy construction projects.

✅ Ultra-Heavy-Duty Extreme Anti-Vibration Reinforced Cast Iron Shell

Extra-thick high-strength heavy alloy cast iron casing with reinforced heavy rib structure effectively dampens continuous extreme strong shocks from massive heavy-duty rock digging operations and boulder impact vibration, preventing housing deformation and loosening of precision internal heavy hydraulic components even under long-duration extreme high-load daily mining shifts.

✅ Extreme Heavy Dust & Rock Mud Resistant Sealing Design

Multi-tier premium heavy-duty reinforced fluorine rubber sealing rings paired with robust outer heavy dust barriers isolate coarse mining dust, sharp rock particles and thick sticky clay sludge from internal structures, slowing heavy seal abrasion in harsh open-pit mining, deep quarrying and extreme heavy earthworks operations.

✅ Multi-Stage Mining-Grade Ultra-High-Pressure Pre-Delivery Quality Screening

All finished units undergo a 30-minute 32MPa ultra-high-pressure retention leak inspection, precision heavy-load linear speed calibration and a 4-hour continuous full-load aging test. Hidden manufacturing defects get eliminated in advance to decrease the frequency of on-site heavy maintenance and costly downtime losses.

✅ Dual Budget-Oriented Heavy Procurement Solutions

Factory-new products meet strict Komatsu official heavy aftermarket quality standards; remanufactured units fully refurbish worn internal heavy hydraulic core components, bringing notable cost advantages for heavy wholesalers maintaining large mining excavator spare inventories and large mining fleet maintenance departments.

✅ Optimize Large Mining Fleet Maintenance Inventory Planning

This single heavy spare part fits two mainstream 40-45 ton mining-class heavy excavator models, simplifying warehouse SKU management for large mining companies and heavy rental fleets operating PC400-7 and PC450-7 equipment and lowering capital locked by redundant heavy spare stock.

✅ Dynamically Balanced Ultra-Heavy-Duty Large Rotor Assembly

Internal large heavy rotating components receive professional high-precision dynamic balancing treatment to suppress heavy vibration and operational noise, delivering solid protection for extra-large-area heavy radiator fins inside mining-class engine compartments.

✅ Extend Whole Heavy Hydraulic System Service Lifespan

Stable heavy thermal regulation keeps the high-displacement large-power engine and supporting heavy hydraulic system within optimal temperature ranges, slowing ageing of heavy main pump internals, large-diameter high-pressure heavy rubber hoses and peripheral heavy seals under repeated extreme heavy-load operation cycles.

✅ Excellent Heavy Cargo Global Logistics Compatibility

Reinforced heavy packaging dimensions suit international heavy freight requirements, shock-absorbing heavy industrial packaging maintains stable performance during sea freight, air transport and heavy cargo delivery. Tiered bulk purchase discounts are available, backed by unified 6-month global warranty excluding man-made damage and incorrect heavy mounting.

Condition: Brand new

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