14648257 hydraulic fan motor For VOLVO EC480 excavator

product parameters

Part No：14648257
Type：Variable Axial Piston Hydraulic Fan Motor
Displacement：42 cc/rev
Applicable Equipment：VOLVO EC480 Excavator, compatible with EC480D, EC480E
Control Mode：Hydraulic pressure proportional control
Material：High-strength cast iron housing, alloy steel piston & cylinder block, copper alloy valve plate, roller bearing, FKM fluorine rubber sealing rings
Surface Treatment：Precision machining, surface hardening, anti-corrosion coating
Drive Method：Hydraulic oil drive
Feature：OEM replacement fan motor, high starting torque, low internal leakage, stable rotation, direct drop-in fit, matched with supporting 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

・14648257 variable piston hydraulic fan motor, OEM replacement, perfectly matched with supporting fan pump for VOLVO EC480 excavator cooling system
14648257 hydraulic fan motor is custom fitted for VOLVO EC480 excavator cooling circuit. It converts hydraulic pressure into rotary torque to drive cooling fan. Stable torque output ensures fan can adjust speed flexibly under continuous heavy excavation and loading operation, preventing engine overheating.
・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 vibration and cyclic pressure impact on mining and construction sites. The housing is not easy to deform, slowing down wear of internal piston, valve plate and bearing components and extending service life.
・Full hydraulic bench inspection before delivery, high interchangeability for direct plug-and-play replacement
Each 14648257 fan motor passes torque, speed, starting performance and durability hydraulic bench test. All mounting dimensions, port positions and spline shaft fully match OEM specifications. Direct installation without modification, shortening equipment downtime and cutting maintenance cost.
・Strong overload capacity, fast speed response to protect radiator and engine assembly
This fan motor features strong overload tolerance and rapid response to pressure changes. It provides stable rotary power for cooling fan. It maintains cooling hydraulic system operating normally, preventing radiator overheating caused by insufficient fan torque or speed attenuation, ideal replacement for overhaul and daily maintenance of VOLVO EC480 excavator.

FAQ 

Q1: What VOLVO excavator models does 14648257 fan motor fit?
A1: Mainly for VOLVO EC480, interchangeable for EC480D and EC480E. Please verify part number and mounting dimensions before ordering.

Q2: What makes this variable piston fan motor suitable for mining working conditions?
A2: It can withstand high system pressure and heavy impact load. High volumetric efficiency ensures stable fan speed even under continuous heavy-duty mining operation.

Q3: What is the root cause if fan speed drops only when excavator lifts heavy load?
A3: The motor internal piston or valve plate has wear, leading to volumetric efficiency drop under high pressure and torque loss.

Q4: What precautions should be followed when replacing this fan motor?
A4: Flush the entire hydraulic cooling circuit, replace hydraulic filter. After installation, bleed air fully to avoid cavitation damage to internal components.

Q5: How to extend service life of high-pressure piston fan motor?
A5: Use high-quality anti-wear hydraulic oil, strictly control oil cleanliness. Regularly inspect oil contamination and replace filter elements on schedule.

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