For R290-7, R290, and R300 excavators operating in construction, quarrying, and earthmoving environments, a reliable swing drive unit is essential for maintaining smooth upper structure rotation, strong torque output, and stable machine productivity. Heavy-duty excavation requires a durable planetary reduction system capable of handling repeated swing cycles, high loads, and demanding jobsite conditions. RITO Excavator Swing Drive Unit 31E9-01051 R290-7 R290 R300 Hydraulic Swing Gearbox Rotary Reducer Planetary Assembly provides efficient hydraulic power transmission, stable torque conversion, and dependable slewing performance for Hyundai excavator applications. The 31E9-01051 swing gearbox is commonly associated with Hyundai R290-7 excavator swing drive systems.
Item NO.:
31E9-01051Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK, PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockDesigned for professional excavator repair and replacement supply, this hydraulic swing reducer assembly delivers consistent rotary power transfer and reliable compatibility for Hyundai heavy equipment fleets. It is an OEM-equivalent replacement solution for equipment distributors, maintenance workshops, and fleet operators who require durable swing components to reduce downtime, restore slewing efficiency, and maintain stable operation during continuous heavy-load cycles. The planetary reduction structure helps convert hydraulic motor power into controlled rotary movement while increasing output torque for smoother excavator rotation. Similar Hyundai R290/R300 swing reduction assemblies use planetary gear components including carriers, sun gears, planetary gears, and related transmission parts.
| Part Number | 31E9‑01051 / 31E9‑01051 |
|---|---|
| Part Name | R290‑7 R290 R300 Excavator Swing Drive Unit Hydraulic Swing Gearbox Rotary Reducer Planetary Assembly |
| Compatible Brand | HYUNDAI |
| Applicable Models | R290‑7, R290, R300 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 + 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 rotary force and smooth speed reduction for R290-7, R290, and R300 excavator upper structure rotation.
Converts hydraulic motor power through the reducer system to achieve smooth and controlled slewing movement.
Built with high-strength internal gears, shafts, carriers, and transmission components to withstand vibration, impact loads, and long operating cycles in demanding jobsite environments.
Matches 31E9-01051 specifications for Hyundai R290-7, R290, and R300 excavator hydraulic swing drive systems.
FAQ
Q: What are the warning signs of a damaged R290 excavator swing drive unit?
A: Slow swing movement, reduced rotation force, abnormal gearbox noise, vibration, and unstable upper structure operation may indicate internal component wear.
Q: How does the 31E9-01051 planetary reducer improve excavator swing performance?
A: It reduces hydraulic motor speed while increasing torque output, allowing the excavator to achieve smoother and more powerful rotary movement.
Q: What should customers confirm before purchasing a Hyundai R290 swing gearbox?
A: Buyers should verify the excavator model, original part number, gearbox structure, mounting specifications, and operating conditions to ensure correct compatibility.
Q: Why choose a complete swing drive assembly instead of rebuilding individual gearbox parts?
A: A complete unit simplifies installation, reduces repair time, and helps restore reliable swing system performance with improved replacement efficiency.
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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