K1057295 Fan Motor For Doosan DX380, DX420, DX500 excavator

product parameters

Part No：K1057295
Type：Piston Hydraulic Fan Motor
Applicable Equipment：Doosan DX380, DX420, DX500 excavator, matched with fan pump
Material：Cast iron housing, alloy steel piston, bronze valve plate, heavy-duty roller bearing
Surface Treatment：Anti-rust coating, ultrasonic deep cavity cleaning, thoroughly remove casting sand, metal scraps and burrs inside flow channel
Control Mode：Flow proportional control, speed varies with hydraulic flow
Feature：Piston structure, stable torque output, fast response, low internal leakage, good contamination resistance, specially designed fan motor for Doosan DX380/DX420/DX500 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

• **Multi-model compatible & proportional speed regulation**
K1057295 piston fan motor, compatible with Doosan DX380, DX420, DX500 excavator cooling system. It works seamlessly with supporting fan pump. Fan speed automatically changes with hydraulic flow to match heat load, effectively solving overheating under heavy-load mining working conditions.
• **Stable torque & responsive operation, low leakage**
Precision ground piston, valve plate and swash plate assembly. Optimized clearance and sealing structure. Stable torque output under back pressure. Rotates steadily with low volumetric leakage, preventing insufficient fan power caused by pressure drop.
• **Heavy-duty cast iron housing, shock & vibration resistant**
Cast iron shell treated by stress relief annealing to eliminate residual internal stress. It can withstand continuous vibration, hydraulic impact and dust corrosion on mining sites. Less shell deformation and slower wear of internal components for longer service life.
• **Good anti-pollution & anti-cavitation performance**
Optimized flow path reduces oil turbulence and cavitation risk. Tolerates slightly contaminated hydraulic oil on mining site. Effectively prevents particle jamming, abnormal noise and premature component wear, ensuring continuous stable operation and less downtime.

FAQ 

**Q1: Which excavator model is this fan motor suitable for? Is it universal?**
A1: This K1057295 fan motor is specially designed for **Doosan DX380, DX420, DX500 excavator**, applied for independent proportional cooling hydraulic system. It cannot be universally used for other excavator models. Must be matched with corresponding fan pump. Wrong model will lead to insufficient fan speed and machine overheating.

**Q2: What factory tests have been done for this motor?**
A2: All K1057295 motors are 100% inspected on professional hydraulic test bench, including torque test, speed curve detection, high-low pressure tightness test and internal leakage inspection. Strict screening ensures stable field performance, test reports can be provided upon request.

**Q3: Does it need professional debugging after installation?**
A3: Standard dimension, direct replacement without modification. After installation, bleed air from cooling hydraulic circuit and check fan rotation direction. If machine is still overheating, check hydraulic oil cleanliness and proportional control signal of fan pump.

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