Hydraulic Pump 708-3s-11550 Fan Motor Komatsu

Product Overview

708-3S-11550 hydraulic fan motor is OEM validated heavy-duty cooling replacement part engineered for Komatsu PC30-8, PC35MR-1 and PC35MRX compact micro excavators.

Serving as the core power component within the radiator cooling circuit of these three micro excavator variants, this electro-proportional hydraulic fan motor dynamically adjusts fan rotational speed following real-time shifts in engine coolant and hydraulic oil temperatures. It delivers stable heat dissipation in narrow municipal trenching projects, residential landscape refurbishment, confined indoor demolition, small-scale farm tillage and compact suburban construction tasks. Adaptive speed regulation prevents engine thermal overload amid frequent start-stop operation cycles, meanwhile lowering unnecessary fuel consumption by cutting fan rotation during the frequent short idle intervals typical of compact machinery work schedules.

Product Highlights

✅ Three-Model Adaptive Proportional Speed Design

Mini built-in DC12V proportional solenoid achieves smooth stepless speed tuning that fits the operating habits of PC30-8, PC35MR-1 and PC35MRX. Fan speed rises automatically during sustained digging to strengthen cooling output, and reduces during frequent work pauses to curb idle power loss and lower regular fuel expenditure.

✅ Space-Optimized OEM Mounting Layout

Downsized reinforced mounting flanges, finely threaded hydraulic ports and precision splined shafts perfectly adapt to the constrained engine bay installation space of the three excavator models. No on-site frame cutting or pipeline remodeling is required during replacement work, effectively shortening downtime at cramped urban and residential construction sites.

✅ Compact Shock-Resistant Cast Iron Casing

Thickened mini cast iron housing absorbs subtle recurring vibration from light digging impacts and bumpy narrow-path travels, avoiding casing cracks and loosening of delicate internal hydraulic components under dense daily working cycles.

✅ Multi-Site Dust, Soil and Mud Resistant Seal Structure

Stacked premium fluorine rubber oil seals paired with compact outer dust gaskets block concrete dust, loose horticultural dirt and wet trench muck, slowing seal degradation in garden renovation projects, narrow municipal trenches and damp rural construction plots.

✅ Multi-Step Factory Quality Assurance Workflow

All finished products undergo a 22MPa 30-minute pressure holding leak test, accurate linear speed calibration and 2.5 hours of continuous full-load aging screening. Potential manufacturing defects get eliminated before delivery to reduce repeated field maintenance work.

✅ Dual Procurement Choices for Different Budget Plans

Factory-new units satisfy strict official maintenance standards for authorized Komatsu service centers; remanufactured versions thoroughly replace all worn internal hydraulic core components, delivering prominent cost advantages for wholesale warehouse inventory management.

✅ Cut Down Warehouse SKU Pressure

One spare part matches three mainstream Komatsu micro excavator models, simplifying stock categorization and decreasing capital locked into scattered small-sized spare inventories.

✅ Precision Dynamic Balancing for Mini Rotor Assemblies

Internal rotating mini components receive professional dynamic balancing treatment to mitigate vibration and operational noise, safeguarding fragile compact radiator fins within narrow engine compartments.

✅ Prolong the Lifespan of Compact Hydraulic Loops

Stable thermal stabilization keeps small-displacement engines and matched hydraulic modules within optimal temperature bands, decelerating ageing of tiny pump internals, slim rubber hoses and peripheral seals under frequent start-stop working rhythms.

✅ Optimized Cross-Border Shipping ExperienceCompact overall dimensions lower international freight costs, shock-absorbing industrial packaging performs steadily during sea, air and parcel express transportation. Tiered bulk discounts are available, covered by standard 6-month worldwide warranty excluding man-made damage and incorrect installation.

Condition: Brand new

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