Heavy-duty excavators require a dependable swing drive system to maintain smooth rotation, accurate positioning, and efficient operation throughout long working hours. For ZX240-3, ZX240, and ZX250 excavator fleets, swing reducer performance directly affects machine productivity and operating stability. RITO Excavator Swing Drive Unit 9243323 ZX240-3 ZX240 ZX250 Hydraulic Swing Gearbox Rotary Reducer Planetary Assembly delivers stable torque transmission, efficient hydraulic power reduction, and reliable rotary movement for demanding construction, quarrying, and earthmoving applications. The 9243323 swing reduction gearbox is commonly applied to Hitachi ZX240-3 and ZX250 series excavator swing systems.
Item NO.:
9243323Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK, PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockDesigned for professional repair and replacement supply, this planetary swing assembly provides consistent power transfer and dependable compatibility for medium-to-large excavator applications. It offers an OEM-equivalent solution for equipment distributors, maintenance workshops, and fleet operators who need durable components to restore swing performance, reduce machine downtime, and support continuous operation in challenging jobsite conditions.
| Part Number | 9243323 / 9243323 |
|---|---|
| Part Name | Excavator Swing Drive Unit ZX240‑3 ZX240 ZX250 Hydraulic Swing Gearbox Rotary Reducer Planetary Assembly |
| Compatible Brand | HITACHI |
| Applicable Models | ZX240‑3, ZX240, ZX250 Medium‑Heavy Duty Construction Excavator |
| Application | Hydraulic drive system for excavator upper body slewing; widely applied in municipal engineering, highway construction, quarry excavation and bulk material stacking work |
| Material | High‑strength forged alloy steel + medium‑heavy‑load wear‑resistant bronze friction parts |
| Product Color | Matte anti‑rust industrial metallic gray |
| Working Temperature | -22℃ ~ +58℃ |
| Key Function | Convert hydraulic pressure into stable slewing torque to drive upper carriage rotation for infrastructure and earthmoving projects |
| Condition | 100% New, Aftermarket / OEM Equivalent Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |
Provides strong torque output and smooth speed reduction for stable ZX240 and ZX250 excavator swing operation.
Converts hydraulic pressure into controlled rotary movement for smooth and precise swing operation.
Built with high-strength alloy materials to withstand repeated impact loads and continuous excavation cycles.
Matches 9243323 specifications for ZX240-3, ZX240, and ZX250 excavator hydraulic swing drive systems.
FAQ
Q: What causes reduced swing accuracy on ZX240 excavators?
A: Internal gear wear, bearing clearance, hydraulic system issues, and long-term heavy-load operation may affect swing smoothness and positioning accuracy.
Q: What is the function of a planetary reducer in an excavator swing system?
A: The planetary reducer decreases rotation speed while increasing output torque, allowing the excavator upper structure to move with greater control and stability.
Q: How can buyers avoid ordering the wrong swing drive assembly?
A: Checking the excavator model, original part number, and existing swing gearbox specifications before purchase helps ensure correct replacement matching.
Q: Why is a complete swing drive unit preferred for fleet maintenance?
A: A complete assembly simplifies installation, reduces repair complexity, and helps restore reliable swing operation faster.
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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