XCMG 490 Plunger Fan Motor For XCMG excavator

product parameters

Part No：XCMG 490 Plunger Fan Motor
Applicable Equipment：XCMG XE490 large excavator, matched with proportional fan pump
Material：High strength alloy cast iron housing, carburized alloy steel plunger, 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 bent-axis plunger construction, high starting torque, low internal leakage, smooth rotation, good contamination resistance, low vibration & noise, specially designed for XCMG large excavator independent cooling system
Working Temperature：-20℃ ~ +115℃
Rated Rotation Speed：1600 rpm, Max allowable speed:1900 rpm
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

• High-strength alloy cast iron housing. Integral casting plus stress relief annealing treatment, excellent structural rigidity and impact resistance. It stably withstands fluctuating hydraulic pressure and strong vibration from mining sites, maintaining consistent torque output under continuous heavy load.
• Ultra-precision machined internal friction pairs. Bent-axis plunger design delivers superior starting torque. Low internal leakage ensures the fan speed responds rapidly following flow changes from proportional pump.
• Good resistance to contaminated hydraulic oil. Optimized internal flow passage reduces abrasive wear caused by fine solid particles. Manganese phosphate anti-rust coating protects housing against dust, mud and humid working environment, extending service cycle.
• Protect engine, radiator and oil cooler assembly. Accurate fan speed regulation stabilizes engine temperature in normal range, avoiding overheating damage and lowering risk of secondary failure for related hydraulic parts.
• Direct replacement with excellent cost performance. All mounting dimensions, port layout and shaft specs match OE specifications. No cutting, drilling or modification required during installation. Fast on-site replacement. Reliable aftermarket spare part for overhaul and routine maintenance.

FAQ 

Q1: Which excavator model is this fan motor suitable for? Is it universal?
A1: This plunger 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: How to extend the service life of the fan motor?
A3: Before installation, thoroughly clean and flush the hydraulic pipeline, replace new hydraulic filter elements, and eliminate oil dirt and impurities. Check fan hub, seals and mounting brackets for wear. After installation, perform no-load test run first to check noise, rotation and temperature rise, then put into heavy-load operation.

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