Hydraulic Pump 708-1S-11212 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

✅ Compact Adaptive Proportional Speed Control

Mini built-in DC12V proportional solenoid realizes smooth stepless speed adjustment. Fan speed rises when compact excavators work under confined high-temperature conditions and slows down during idle intervals, decreasing wasted engine power and cutting daily fuel usage for small diggers.

✅ Perfect Space-Saving OEM Interchange Size

Precision-machined compact mounting holes, micro oil ports and splines fully match the narrow installation space of the applicable PC mini excavators. Direct on-site swap is achievable without altering cramped engine compartments, greatly shortening repair downtime of small machines.

✅ Mini Reinforced Anti-Vibration Casing

Thickened compact cast iron shell absorbs frequent micro-vibration caused by small bucket digging, travel over uneven municipal roads and repeated turning motions, avoiding shell fracture and internal component loosening.

✅ Micro Precision Multi-Layer Sealing System

Mini-sized tiered fluorine rubber seals plus compact outer dust gaskets adapt urban construction, garden and muddy farm scenarios, intercepting fine silt and concrete dust to protect internal precision structures from abrasive wear.

✅ Precision-Oriented Multi-Round Factory Testing

All finished compact motors go through low-volume pressure leak checks, delicate rotating speed calibration and long full-load aging trials, strictly filtering defective units with tight tolerance requirements of mini hydraulic components.

✅ Dual Budget-Friendly Procurement Options

Brand-new compact assemblies meet factory-level maintenance demands for premium mini excavator fleets; remanufactured variants replace all worn tiny internal parts to deliver cost-efficient choices for bulk spare part stocking.

✅ Wide Cross-Model Mini Excavator Compatibility

One spare unit is adaptable to six mainstream small PC excavator models, lowering SKU quantity and simplifying inventory classification for spare parts retailers focusing on compact construction machinery.

✅ Low-Noise Balanced Micro Rotation

Internal tiny rotating parts are dynamically balanced to reduce vibration noise in narrow engine bays, protecting small-sized radiator fins and delicate peripheral hydraulic tubing.

✅ Boost Durability of Compact Power Systems

Reliable thermal control keeps compact engines and miniature hydraulic assemblies within optimal temperature ranges, slowing the degradation of small pump internals, slim rubber hoses and micro seals under frequent cyclic workloads.

✅ Flexible Shipping for Small-Sized Parcels

The compact product size reduces transportation costs, supporting express, air and sea shipping globally; tiered bulk discounts are available, covered by unified six-month worldwide warranty clauses.

Condition: Brand new

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