DX520 hydraulic fan motor For Doosan DX520 excavator

Short Description:

KM30.27L3-83S3-LMB/MC-N-*GC hydraulic fan motor is aftermarket replacement spare part for Zoomlion ZE550 mining excavator, Casappa KM30 series.

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Product Detail

Product Tags

description

product parameters

Part No：DX520 Fan Motor
Product Type：Fixed Displacement Hydraulic Gear Fan Motor
Applicable Equipment：Doosan DX520 Excavator
Control Mode：Fixed displacement external gear structure
Displacement：32 cc/rev
Nominal Working Pressure：24 MPa (240 bar)
Max Instantaneous Peak Pressure：28 MPa (280 bar)
Rated Rotation Speed：2300 rpm
Max Allowable Rotation Speed：2900 rpm
Working Medium：ISO VG46 Anti-wear Hydraulic Oil
Working Temperature Range：-20℃ ~ +112℃
Main Material：Cast iron housing, hardened alloy steel gear pair, FKM fluorine rubber seal
Surface Treatment：Precision grinding, surface hardening, stress relief annealing, anti-rust coating
Packaging：Independent anti-rust packaging + export wooden case
Storage Environment：Dry indoor storage, moisture-proof, impact-proof, anti-corrosive gas

advantage

- 32cc optimized displacement design, perfectly matched for DX520 heavy-duty mine thermal load
32cc displacement balances torque output and power consumption, precisely satisfying the continuous high heat dissipation requirement of DX520 during heavy rock excavation, reducing unnecessary power loss.
- Built-in integrated pressure relief valve for instantaneous pressure spike suppression
Integrated pressure relief structure protects internal components from sudden pressure surges caused by rock impact loads, preventing gear and bearing damage under harsh mine working conditions.
- Optimized gear meshing profile to reduce pulsation and noise
Fine-tuned gear tooth profile lowers flow ripple and meshing noise, reducing vibration transfer to radiator core and pipelines, improving the stability of cooling system under long continuous shifts.
- Thickened cast housing with enhanced rigidity, resisting thermal deformation
Reinforced thick cast iron housing maintains structural rigidity under long-time high temperature operation, effectively reducing thermal deformation and extending service life in mine sites.
- Original mounting flange and port layout for direct replacement
Standard installation interface matches original DX520 mounting holes, no modification required during replacement, shortening machine downtime and lowering installation cost.
- Heavy-load cyclic excavation bench test simulating DX520 mine working condition
Each motor undergoes cyclic thermal load bench test simulating DX520 continuous heavy rock excavation cycles to verify long-term reliable operation.

FAQ

Q1: Which machine does DX520 fan motor fit?
A1: This hydraulic fan motor fits Doosan DX520 excavator. Confirm machine serial number before purchase.

Q2: What hydraulic function does this fan motor support?
A2: It provides rotary power for radiator cooling system, dynamically adjusting fan speed to control engine water temperature and hydraulic oil temperature, used for large-scale mine exploitation, hard rock stripping and heavy earthmoving projects.

Q3: What are typical failure symptoms of worn fan motor?
A3: Typical symptoms: insufficient fan torque under heavy rock digging, slow speed response when temperature rises, obvious vibration during fan rotation under impact load, pressure relief function failure, gradual oil temperature rise during long shift operation, shaft seal oil seepage.

Q4: Why excavator still overheats after fan motor replacement?
A4: The fault may not come from motor. Check relief valve calibration, stuck valve spool, clogged filter, damaged seals or trapped air inside hydraulic circuit. Air bleeding must be completed after installation.

Q5: What hydraulic oil should be used for this fan motor?
A5: Use ISO VG46 anti-wear hydraulic oil. Working temperature -20℃~112℃. Do not mix different oil brands, avoid long continuous running under peak pressure.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.