Swing speed dropping, oil temperature rising or upper structure response becoming unstable on your Hitachi mining excavator? A worn MX750 swing motor allows excessive internal bypass and reduces available swing torque. RITO supplies this heavy-duty MX750 hydraulic swing motor, cross-referenced with 4439383 and 4440905, for Hitachi EX1800-3, EX1900-5, EX1900-6, EX3600 and EX8000 excavators, restoring reliable rotation under demanding mining duty.
Item NO.:
MX750Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANColor:
Industrial greyShipping Port:
Huangpu,GuangzhouLead Time：
In StockMX750 Hydraulic Swing Motor Assembly for Hitachi EX1800-3, EX1900-5, EX1900-6, EX3600 and EX8000 large mining excavators. Common reference numbers include 4439383 and 4440905. The motor converts high-pressure hydraulic flow into the high starting torque required to rotate a large upper structure, while its integrated control and braking functions support smooth acceleration and controlled deceleration. RITO supplies the MX750 as a direct-fit replacement option for compatible Hitachi swing devices; verify the machine serial number, flange, ports and shaft interface before ordering.
| Part Number | MX750 / 4439383 / 4440905 |
|---|---|
| Part Name | Hydraulic Swing Motor Assembly |
| Compatible Brand | Hitachi / Kawasaki MX750 |
| Applicable Models | EX1800-3, EX1900-5, EX1900-6, EX3600, EX8000 Excavator |
| Application | Heavy-duty upper-structure swing drive for mining excavators |
| Material | High-strength alloy steel rotating group and cast housing |
| Product Color | Industrial grey |
| Working Temperature | -25°C~+80°C |
| Key Function | Converts hydraulic flow into high starting torque for upper-structure rotation |
| Condition | 100% New Aftermarket OEM Quality |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
The MX750 is engineered for large Hitachi mining excavators, delivering the starting torque required to accelerate and control heavy upper structures during continuous loading cycles.
MX750, 4439383 and 4440905 are commonly used references for compatible Hitachi swing motor applications, simplifying identification across machine and parts catalogues.
The motor supports stable hydraulic braking and controlled deceleration, reducing overswing and shock loads transmitted to the swing gearbox and slew ring.
One MX750 motor family covers EX1800-3, EX1900-5/6, EX3600 and EX8000 applications; final fitment should be confirmed using the machine serial number and interface dimensions.
FAQ
Q: Which Hitachi excavators use the MX750 swing motor?
A: The MX750 is commonly applied to Hitachi EX1800-3, EX1900-5, EX1900-6, EX3600 and EX8000 mining excavators. Confirm the exact configuration with the machine serial number before ordering.
Q: What are the common cross-reference numbers for MX750?
A: Common references include 4439383 and 4440905. Always compare the nameplate, mounting flange, hydraulic ports and shaft interface with the removed motor.
Q: What symptoms indicate an MX750 swing motor problem?
A: Typical symptoms include slow swing acceleration, reduced swing torque, excessive case-drain flow, rising hydraulic oil temperature, unstable deceleration or external leakage around the motor housing.
Q: Is the MX750 a main hydraulic pump or a swing motor?
A: The MX750 shown here is a hydraulic swing motor used in the rotating device. It is not the excavator main hydraulic pump or the separate fan pump.
Q: What quality options are available?
A: We provide original, OEM and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
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