Hydraulic Pump 708-1G-00020 Fan Motor Komatsu

Product Overview

708-1G-00020 hydraulic fan motor is OEM heavy-duty cooling replacement part custom-made for Komatsu PC4000-6 and PC3000-6 large excavators.

As the core power component of radiator cooling circuits for these two large excavator models, this electro-proportional hydraulic fan motor dynamically adjusts fan rotational speed based on real-time fluctuations of coolant and hydraulic oil temperatures. It delivers stable and powerful heat dissipation during heavy mining excavation, quarry digging, large-scale earthworks and long-duration quarry operation, effectively preventing engine thermal overload during extended continuous work shifts and cutting excess fuel consumption through adaptive speed control.

Product Highlights

✅ Adaptive Proportional Speed Control for Large Excavators

Robust built-in DC12V proportional solenoid realizes smooth stepless speed regulation. Fan speed rises automatically to enhance cooling amid high-load digging cycles and lowers rotation under idle working states, cutting parasitic power draw and improving overall fuel economy.

✅ Exact OEM Mount Dimensions

Reinforced mounting flanges, sturdy port threads and precision machined shaft splines perfectly fit the factory installation space of PC4000-6 and PC3000-6. No extra on-site machining is required during replacement, which notably shortens downtime at remote mining sites.

✅ Heavy-Duty Anti-Vibration Cast Iron Casing

Integral extra-thick alloy cast iron housing absorbs strong recurring vibration caused by intense bucket excavation and rough off-road travel, protecting inner hydraulic parts from shock and preventing shell cracking throughout long service cycles.

✅ Multi-Layer Dust and Mud Resistant Sealing System

Stacked premium fluorine rubber seals paired with enlarged external dust gaskets effectively trap fine mine dust, rocky debris and wet excavation mud. Seal abrasion slows down greatly in dusty mines, muddy digging pits and quarry work zones.

✅ Strict Multi-Step Factory Quality Control

All finished units pass high-pressure leak retention testing, fine speed calibration and extended full-load aging trials. Potential defects get eliminated before delivery to reduce costly recurring field maintenance work.

✅ Two Flexible Procurement Options

Brand-new factory-standard assemblies satisfy stringent maintenance requirements of large mining corporations; remanufactured versions replace all worn internal core components to deliver attractive cost advantages for bulk stock purchases.

✅ Dual Excavator Model Compatibility

A single spare motor suits both PC4000-6 and PC3000-6, lowering the total number of SKUs you need to stock and simplifying warehouse inventory arrangement.

✅ Dynamically Balanced Internal Rotor

Large rotating internal components undergo professional dynamic balancing processing to suppress vibration and operational noise, offering steady protection for bulky radiator fins and surrounding thick hydraulic pipelines.

✅ Boost Long Machine Service Lifespan

Consistent thermal regulation holds the engine and main hydraulic assemblies within optimal temperature ranges, slowing degradation of pump internals, heavy rubber hoses and peripheral seals under nonstop heavy excavation workloads.

✅ User-Friendly International Logistics Solution

Solid industrial-grade packaging adapts to sea freight, air shipping and global express delivery. Tiered bulk discounts are available, with worldwide 6-month warranty coverage excluding human-caused faults and incorrect installation.

Condition: Brand new

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