MSF53 fan motor For excavator

product parameters

Part No：MSF53
Type：Axial Piston Hydraulic Fan Motor
Displacement：53 cc/rev
Applicable Equipment：Large Mining Excavator
Control Mode：Hydraulic pressure proportional control
Material：High-strength cast iron housing, alloy steel piston & cylinder block assembly, copper alloy valve plate, tin-bronze bearing, FKM fluorine rubber sealing rings
Surface Treatment：Precision machining, surface hardening, anti-corrosion coating
Drive Method：Hydraulic oil drive
Feature：KYB compatible MSF series fan motor, high starting torque, low internal leakage, stable rotation, direct OEM replacement, matched with corresponding fan pump for cooling system
Working Temperature：-25℃ ~ +120℃
Package：Independent anti-rust packing + Standard export wooden case
Storage suggestion：Keep dry, avoid moisture, rust and collision, indoor constant temperature storage, stay away from corrosive gas

・Precision hardened piston & cylinder block assembly, stable torque output and low speed pulsation
Alloy steel piston and cylinder block assembly adopts precision grinding and surface hardening process. It maintains steady torque output under variable inlet pressure. Volumetric efficiency stays high to guarantee consistent fan rotation for cooling circuit.
・High-rigidity cast iron housing with stress relief treatment, excellent anti-vibration and pressure impact resistance
Cast iron housing after stress relief annealing eliminates internal residual stress. It can resist continuous heavy vibration and high pressure impact in quarry and open-pit mining sites. The housing is not easy to deform, slowing down wear of internal piston, valve plate and bearing components and extending service life.
・Optimized internal flow channel structure and upgraded FKM sealing assembly, good anti-cavitation & high temperature resistance
Optimized internal flow path reduces oil turbulence and cavitation risk. FKM seal set delivers outstanding high-temperature and hydraulic oil aging resistance. It effectively prevents internal and external oil leakage, avoiding premature component wear caused by oil contamination, minimizing unexpected machine downtime.

FAQ 

Q1: What is the main working principle of MSF53 hydraulic fan motor?
A1: It is an axial piston hydraulic motor. The pressurized hydraulic oil from fan pump pushes piston assembly to generate rotary torque, driving cooling fan and adjusting fan speed with the change of inlet oil pressure.

Q2: Can MSF53 fan motor be mixed with other displacement fan pumps?
A2: It is recommended to use with matched fan pump. Mismatched pump displacement will lead to abnormal fan speed, insufficient torque or overload and damage the motor.

Q3: What damage will happen if hydraulic oil contains large amount of impurities?
A3: Hard particles will scratch piston and valve plate surface, causing gradual internal leakage, torque drop, fan speed decline, and eventually motor seizure.

Q4: What should we check after installing MSF53 fan motor?
A4: Check rotation direction, oil port leakage, fan running noise and speed variation. Bleed air from hydraulic circuit to eliminate speed jitter.

Q5: How to store MSF53 fan motor for long time stock?
A5: Fill anti-rust hydraulic oil inside motor, seal all oil ports tightly. Keep indoor dry storage, avoid direct vibration and high temperature environment.

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