KC45D Fan Motor For XCMG XE490 excavator

product parameters

Part No：KC45D
Type：Axial Piston Hydraulic Fan Motor
Applicable Equipment：XCMG XE490 large excavator, matched with proportional fan pump
Material：High strength alloy cast iron housing, carburized alloy steel piston, bronze valve plate, heavy-duty roller bearing
Surface Treatment：Manganese phosphate anti-rust coating, ultrasonic deep cavity cleaning, thoroughly remove casting sand, metal scraps and burrs inside flow channel
Control Mode：Flow-controlled speed regulation, matched with proportional fan pump
Rated Working Pressure：25 MPa
Max Instantaneous Peak Pressure：30 MPa
Feature：Compact axial piston construction, high starting torque, low internal leakage, smooth rotation, good contamination resistance, low vibration & noise, Danfoss KC45D series, specially designed for XCMG large excavator independent cooling system
Working Temperature：-20℃ ~ +115℃
Package：Independent anti-rust packing + Standard export carton
Storage suggestion：Keep dry, avoid moisture, rust and collision, indoor constant temperature storage, stay away from corrosive gas

• **Original machine matching & precise cooling control**
Custom axial piston structure specially tuned for XCMG XE490 cooling system. It perfectly matches the flow output of the original proportional fan pump, realizing stepless speed regulation with sensitive response. It accurately adjusts fan speed according to engine water temperature and hydraulic oil temperature, effectively solving frequent overheating, slow heat dissipation and fan speed instability under heavy-load mining conditions.
• **High torque & low leakage core performance**
Ultra-precision mirror grinding is adopted for pistons, valve plates and friction pairs. Combined with optimized internal sealing structure, the motor features low internal leakage, stable pressure holding and large starting torque. It maintains continuous and powerful fan rotation under long-term fluctuating pressure, avoiding fan stalling and weak heat dissipation caused by pressure drop.
• **Heavy-duty durable structure for mining working conditions**
The whole shell is made of high-strength alloy cast iron with stress relief annealing treatment, which eliminates internal structural stress. It effectively resists strong vibration, hydraulic impact and dust corrosion in open-pit mines, solves common problems such as shell deformation and internal part wear, and greatly extends the service life of the motor.
• **Strong anti-pollution & anti-cavitation capability**
Optimized internal flow channel structure reduces fluid turbulence and cavitation. It adapts to slightly contaminated hydraulic oil in construction sites, effectively avoiding particle jamming, abnormal noise and shaft wear. It runs stably for a long time and reduces frequent maintenance failures.

FAQ 

**Q1: Which excavator model is this fan motor suitable for? Is it universal?**
A1: This KC45D axial piston fan motor is specially customized for **XCMG XE490** large excavator, supporting the original proportional cooling hydraulic system. It is not universal for other models. Matching with the original fan pump ensures perfect heat dissipation performance; incorrect model will cause insufficient fan torque and machine overheating.

**Q2: What factory tests have been done to ensure quality?**
A2: All motors are 100% tested on a professional hydraulic test bench, including full-speed rotation test, torque detection, high and low pressure tightness test and internal leakage inspection. Each unit is strictly screened to ensure stable performance after installation, and test records can be provided upon request.

**Q3: What is the warranty scope and non-warranty scope?**
A3: We provide **12-month professional warranty**. The warranty covers performance failure under normal use, clean hydraulic oil and standard installation. Damage caused by hydraulic oil pollution, foreign matter jamming, overpressure impact, wrong installation and man-made damage is not included in the warranty.

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