708-7W-00130 Fan Motor For Komatsu PC800 excavator

708-7W-00130 Fan Motor For Komatsu PC800 excavator Featured Image
  • 708-7W-00130 Fan Motor For Komatsu PC800 excavator

Short Description:

708-1W-00011 is a variable hydraulic steering pump for Komatsu WA470-6 and WA480-6 wheel loaders.

Product Detail

Product Tags

description

This hydraulic fan motor integrates built-in high-precision proportional solenoid valve to realize stepless speed regulation, matching heat dissipation capacity and machine load in real time. Internal piston, rotor and heavy-duty bearing components adopt precision grinding processing, which can minimize running friction and maintain low vibration, low noise and stable rotation state under long continuous cyclic mining work. The high-strength cast alloy housing has excellent structural rigidity, resisting heavy impact, rock debris and thick dust invasion in mining sites. It is equipped with multiple groups of composite high-pressure sealing assemblies, which can cope with frequent hydraulic pressure fluctuations and wide ambient temperature changes all year round, effectively preventing internal hydraulic leakage and external oil seepage. All finished fan motors pass strict bench tests including pressure resistance, speed regulation response, rotating stability and tightness inspection before delivery. Standard flange installation interface fully matches original assembly for direct replacement without cutting, drilling or any mechanical modification.

product parameters

Part No：708-7W-00130
Interchangeable Part No：708-7W-00160
Product Type：Variable Speed Hydraulic Cooling Fan Motor
Applicable Equipment：Komatsu PC800-8 / PC800LC-8E0 / PC850-8E0 / PC1250-8 / PC1250LC-8 / PC2000-8 Large Excavator
Core Technology：Proportional solenoid valve stepless intelligent speed control
Motor Displacement：18 cc/rev
Rated Working Pressure：24 MPa
Max Instantaneous Peak Pressure：28 MPa
Rated Speed：1900 rpm
Max Allowable Speed：2500 rpm
Min Idle Speed：550 rpm
Rated Output Torque：46 N・m
Speed Response Time：≤0.35s
Working Temperature Range：-25℃ ~ +115℃
Applicable Altitude：≤3000m
Sealing Type：Multi-composite high pressure wear-resistant seal
Internal Leakage Standard：≤1.6 L/min (rated pressure)
Axial Rotor Clearance：0.016mm precision tolerance
Main Material：Alloy cast housing, hardened integral rotor, heavy-duty wear-resistant bearing
Installation Method：Flange mounting, fixed bolt hole positioning
Application：Radiator fan drive for large mining excavator engine and hydraulic system cooling

Applicable Models

This hydraulic fan motor is aftermarket replacement spare part:
・Komatsu PC800-8 / PC800LC-8E0 large excavator
・Komatsu PC850-8E0 excavator
・Komatsu PC1250-8, PC1250LC-8 excavator
・Komatsu PC2000-8 excavator

Application Scenarios

This fan motor is designed for large mining excavator heavy-duty operation scenarios:
・Open-pit mine: Continuous rock excavation, ore loading and long-hour non-stop mining operation under high temperature and heavy dust.
・Quarry site: Large-scale rock digging, blasting material handling and stockpile transportation work.
・Large earthmoving project: Mass soil excavation, cut and fill construction in infrastructure projects.
・Ore stockyard: High frequency bulk ore loading and transfer operation.
・Mountain engineering: Heavy-duty excavation work under unstable and harsh site environment.

advantage

・Built-in proportional solenoid valve automatically adjusts fan speed according to coolant and hydraulic oil temperature, reduces unnecessary power loss and lowers fuel consumption during light-load standby operation.
・Precision hardened rotor and heavy-duty bearing assembly maintain stable rotary performance, resist abrasive wear from rock dust and mineral particles, and extend service life under continuous heavy cyclic mining conditions.
・High-strength alloy cast housing features good shock resistance, protecting internal core components from collision damage caused by flying stone debris in mining site.
・Multi-layer composite sealing structure maintains stable sealing effect under fluctuating pressure and temperature, effectively lowering the probability of internal leakage and external hydraulic oil seepage.
・Good interchangeability with alternative part number 708-7W-00160, supporting flexible spare parts stocking and simplifying inventory management for distributors and mining maintenance suppliers.
・Standard flange mounting dimensions fully match original installation position, supporting direct on-site replacement without machining modification, reducing equipment downtime and improving overall mining operation efficiency.

FAQ 

Q1: Which excavator does 708-7W-00130 fan motor fit?
A1: It mainly fits Komatsu PC800-8 / PC800LC-8E0 large excavator, also compatible with PC850-8E0, PC1250-8, PC1250LC-8 and PC2000-8 mining excavators. Confirm machine serial number before purchase to avoid wrong part selection for different serial ranges.

Q2: What abnormal signs indicate the fan motor needs replacement?
A2: Fan rotation with obvious abnormal noise, fan speed fails to respond to temperature changes, motor housing oil leakage, and engine overheating under heavy mining load. If these symptoms gradually worsen during continuous operation, internal wearing of the fan motor is highly possible.

Q3: What preparations should be completed before installing the fan motor?
A3: Release residual hydraulic pressure, clean hydraulic pipelines and hydraulic tank, inspect hydraulic oil quality and filter condition. After assembly, bleed air from hydraulic circuit and test fan speed regulation function step by step under no-load condition.

Q4: The engine still overheats after replacing the fan motor, what should we check?
A4: Inspect radiator blockage, hydraulic oil viscosity, solenoid valve signal, fan blade damage, water pump and engine cylinder status. Engine overheating issue may not be caused only by fan motor failure, full cooling system inspection is required.

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