Hydraulic Pump 708-2G-00700 Fan Motor Komatsu

Product Overview

708-2G-00700 hydraulic fan motor is OEM-grade heavy-duty cooling replacement part precisely engineered for Komatsu PC300-7 and PC350-7 large-sized excavators.

Serving as the core power assembly of the radiator cooling system built for these 30-to-35-ton class heavy excavators, this electro-proportional hydraulic fan motor intelligently adjusts fan rotational speed in response to real-time variations in engine coolant and internal hydraulic oil temperatures. It delivers stable and reliable heat dissipation across a wide range of heavy construction scenarios, including large-scale mining overburden removal, deep foundation excavation, major highway earthworks, quarry stone stripping and large-scale port construction projects. Adaptive speed regulation effectively prevents engine thermal overload during prolonged high-load heavy excavation cycles, and optimizes fuel efficiency by cutting unnecessary fan rotation during intermittent idle periods on large construction sites.

Product Highlights

✅ 30-35 Ton Heavy-Class Calibrated Proportional Speed System

Purpose-built high-torque heavy-duty proportional solenoid achieves smooth stepless speed adjustment tailored to the extreme heavy-load thermal characteristics of PC300-7 and PC350-7. Fan speed automatically ramps up during sustained deep heavy excavation to guarantee sufficient cooling capacity, and lowers during frequent work pauses to reduce idle power wastage and long-term fuel expenditure.

✅ High-Precision OEM Mounting for Large Engine Compartments

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

✅ Extra-Heavy-Duty Anti-Vibration Reinforced Cast Iron Shell

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

✅ High-Performance Heavy Dust & Mud Resistant Sealing Design

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

✅ Multi-Stage Heavy Industrial-Grade Pre-Delivery Quality Screening

All finished units undergo a 30-minute 28MPa pressure retention leak inspection, precision linear speed calibration and a 3.5-hour continuous full-load aging test. Hidden manufacturing defects get eliminated in advance to decrease the frequency of on-site maintenance and downtime losses.

✅ Dual Budget-Oriented Procurement Solutions

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

✅ Optimize Large Fleet Maintenance Inventory Planning

This single spare part fits two mainstream 30-35 ton heavy excavator models, simplifying warehouse SKU management for mining companies and rental fleets operating PC300-7 and PC350-7 equipment and lowering capital locked by redundant spare stock.

✅ Dynamically Balanced Heavy-Duty Large Rotor Assembly

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

✅ Extend Whole Heavy Hydraulic System Service Lifespan

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

✅ Excellent Heavy Cargo Global Logistics Compatibility

Reinforced heavy packaging dimensions suit international heavy freight requirements, shock-absorbing 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 mounting.

Condition: Brand new

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