ZX75UR-3 swing motor leaking or swing performance degraded in a confined-space application? The compact 4470057 swing motor is under high thermal stress in tight-tail-swing operation where the cooling cycle is compressed. RITO supplies this remanufactured swing motor assembly, rebuilt to OEM internal clearances to restore swing torque and thermal stability in the demanding ZX75UR-3 duty cycle.
Item NO.:
4470057-FXOrder(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In Stock4470057-FX Swing Motor Assembly (Remanufactured) for Hitachi ZX75UR-3, ZX75URT and ZX75US-A excavators. Remanufactured (FX designation) with new barrel, piston shoes, valve plate and seals to OEM clearance specification. The compact ZX75UR-3 swing motor operates at higher duty cycle in confined-site work; remanufactured rotating group restores correct bypass clearance and reduces heat generation back to design level.
| Part Number | 4470057-FX (Remanufactured) |
|---|---|
| Part Name | Swing Motor Assembly (Remanufactured) |
| Compatible Brand | Hitachi |
| Applicable Models | ZX75UR-3, ZX75URT, ZX75US-A Excavator |
| Application | Compact swing motor and reduction drive for Hitachi ZX75UR-3 tight-tail-swing excavator |
| Material | OEM housing retained, new alloy steel rotating group components fitted |
| Product Color | Industrial finish |
| Working Temperature | -30°C~+80°C |
| Key Function | Provides swing torque for ZX75UR-3 / ZX75URT / ZX75US-A compact excavator upper structure rotation |
| Condition | Remanufactured to OEM specification (FX grade) |
| Packaging | Wooden Case Reinforced Carton Neutral Packing Customized Box |
Barrel, piston shoes and valve plate replaced with new components; housing inspected and recertified; all clearances measured and confirmed within OEM specification before shipping.
Rotating group clearances selected for the high-frequency swing cycles of ZX75UR-3 confined-site work, where swing reversals per hour exceed those of standard-tail-swing machines.
Common swing motor assembly covers all three ZX75 reduced-tail-swing variants, simplifying spare-part stocking for urban demolition and confined-site operators.
Correct internal bypass clearance reduces continuous heat generation in the motor, extending oil change intervals and reducing radiator load during all-day confined-site swing operations.
FAQ
Q: What is the FX designation for 4470057-FX?
A: FX indicates the unit is remanufactured by RITO: the original housing is retained and inspected, all rotating group wear components (barrel, piston shoes, valve plate, seals) are replaced with new parts, and the assembly is tested to OEM performance specification.
Q: Is a remanufactured 4470057-FX as reliable as a new swing motor?
A: When remanufactured to OEM clearance specification with new rotating group components, the swing motor function and service life are equivalent to a new unit. The OEM housing, which is the highest-cost component, is inspected and reused.
Q: Does 4470057-FX include the swing gearbox?
A: The assembly includes the swing motor and its integrated reduction stage as applicable to ZX75UR-3 configuration. Confirm the assembly scope with our team if you need the complete swing unit including external gearbox.
Q: How to confirm 4470057-FX is correct for my ZX75UR-3?
A: Verify the existing swing motor part number is 4470057 and the machine model is ZX75UR-3, ZX75URT or ZX75US-A. Provide machine serial number for our team to cross-reference.
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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