Guangzhou Zhenhui Machinery Equipment Co., Ltd
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4439383 4440905 Kawasaki MX750 Swing Motor for Hitachi EX1900 Excavator – Genuine Hydraulic Slew Drive Assembly
| Parameter | SpecifiC-A-Tion |
| Product Name | Swing Motor Assembly |
| Part Number | 4439383, 4440905 |
| Motor Model | MX750 |
| Applicable Machines | Hitachi EX1900 Excavator |
| Brand | Kawasaki (KPM Japan) |
| Country of Origin | Japan |
| Condition | New / Replacement |
| Function | Rotates the upper structure of the excavator |
| AppliC-A-Tion | Cooling System – Excavator Radiator Fan Drive |
| Material - Housing | High-Strength Cast Iron |
| Material - Internal Gear | Hardened Tool Steel |
About Us
– Professional Excavator Parts Supplier Since 2012
we are a trusted supplier specializing in high-quality excavator spare parts for a wide range of leading machinery brands. Our product line includes:
Engine assemblies , Hydraulic pumps ,Final drive motors ,Swing motors with gearbox , Main control valves ,Pilot valves, solenoid valves, joysticks, sensors, and more.
Our parts are fully compatible with well-known brands including (C-A-T), Komatsu, Hitachi, Kobelco, Hyundai, Volvo, Doosan, Sumitomo, Case, and SANY.
We take pride in offering:
✅ Reliable product quality
✅ Competitive factory prices
✅ Fast delivery and global shipping
✅ Attentive after-sales support
We believe in long-term cooperation and a win-win business philosophy, aiming to support our partners in maximizing equipment uptime and reducing maintenance costs.
Packaging & Delivery
Each motor is professionally packed in a sturdy export-grade wooden case, with moisture-proof and shock-resistant treatment to ensure safety during transit.
We support express shipping (DHL, FedEx, UPS), air freight, and sea freight depending on order size and destination.
Delivery typically takes 3–7 working days for in-stock units, and 15–30 days for special orders.
Goods can be shipped from Guangzhou, or any designated port.
Trade terms such as FOB, CIF, DDP are available upon request.
Q: Which machine is this swing motor compatible with?
A: It is designed for the Hitachi EX1900 large excavator.
Q: What is the part number for this motor?
A: It can be referenced by either 4439383 or 4440905, both referring to the MX750 model.
Q: What is the function of the MX750 swing motor?
A: The motor controls the rotation (slew) of the upper body of the excavator.
Q: Is this an original Kawasaki motor?
A: Yes, this is a genuine Kawasaki KPM Japan swing motor assembly.
Q: Do you offer other parts for Hitachi EX1900?
A: Yes, we offer main pumps, travel motors, cylinders, control valves, and more for EX1900.