Hydraulic Pump 708-1S-21110 Fan Motor Komatsu

Product Overview

708-1S-11212 hydraulic fan motor is OEM-grade compact cooling replacement part tailored for multiple Komatsu mini excavators including PC50MR-2, PC35MR-2, PC45R-8, PC45-8, PC40 and PC40MR-2.

Serving as the compact core drive of mini excavator radiator cooling circuits, this electro-proportional hydraulic fan motor intelligently adjusts fan rotational speed according to real-time coolant and hydraulic oil temperature. It delivers steady heat dissipation during narrow-space construction jobs such as garden renovation, municipal trenching, indoor demolition and small farm earthworks, preventing engine thermal overload amid frequent start-stop operations of compact diggers and lowering extra fuel consumption through adaptive speed regulation.

Product Highlights

✅ Mini Proportional Stepless Speed Regulation

Compact built-in DC12V proportional solenoid enables seamless speed tuning. It boosts fan rotation during heavy warm excavation tasks and lowers speed at idle periods, minimizing ineffective engine power loss and improving the fuel economy of tiny excavators.

✅ Space-Optimized OEM Mounting Dimensions

Precision-cut compact mounting flanges, micro oil ports and shaft splines perfectly adapt the narrow installation cavity of PC27R-8 and PC30MR-2. Field replacement can be completed quickly without structural alterations to compact engine bays to shorten repair downtime.

✅ Vibration-Resistant Mini Cast Iron Shell

Thickened miniature cast iron casing buffers recurring small-amplitude vibration from frequent digging operations and bumpy narrow-site travel, preventing shell micro-cracks and loosening of delicate internal hydraulic components.

✅ Fine-Grade Multi-Layer Micro Sealing Structure

Tiered micro fluorine rubber seals plus mini outer dust gaskets filter fine concrete dust, garden silt and mud, performing steadily in residential construction, greening and wet farmland environments and lengthening seal service cycles greatly.

✅ High-Precision Multi-Step Factory Quality Checks

All finished motors adopt micro-tolerance testing standards, undergoing static pressure leak inspection, fine speed calibration and long aging runs, eliminating defective products that cannot fit strict micro-hydraulic precision requirements.

✅ Two Optional Procurement Schemes

Brand-new original-spec assemblies satisfy strict maintenance criteria for premium micro-excavator fleets; remanufactured versions renew all worn micro internal parts to bring obvious cost advantages for bulk stocking.

✅ Targeted Dual-Model Compatibility

One spare component fits two popular compact Komatsu excavator variants, cutting down spare part SKUs and simplifying inventory sorting for distributors focused on small construction machinery.

✅ Dynamically Balanced Low-Vibration Rotation

Mini internal rotating parts receive dynamic balancing processing, reducing running vibration and humming noise in confined engine cabins, meanwhile shielding slim radiator fins and fragile surrounding hydraulic hoses.

✅ Prolong Service Life of Compact Hydraulic Systems

Stable thermal management holds engine and micro hydraulic assemblies at ideal working temperatures, slowing aging of miniature pump internals, thin rubber pipelines and micro seals amid frequent short-cycle work.

✅ Convenient International Logistics

The compact overall size cuts parcel shipping costs, with accessible sea, air and express delivery worldwide; tiered wholesale discounts apply to bulk purchases under the unified six-month global warranty policy.

Condition: Brand new

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