For R130, R140, and R150 excavators operating in construction, quarrying, and earthmoving environments, a reliable swing gearbox is essential for maintaining smooth rotation, accurate positioning, and efficient machine productivity. Continuous excavation cycles require a durable rotary reduction system that can deliver stable torque output and dependable performance under demanding working conditions. RITO Hydraulic Swing Gearbox 31N4-10140 R130 R140 R150 Excavator Swing Reduction Drive Rotary Reducer Unit provides efficient hydraulic power transmission, smooth speed reduction, and reliable slewing operation for Hyundai excavator swing systems. The 31N4-10140 swing reduction gear is commonly used in Hyundai R130, R140, and related R-series excavator swing drive applications.
Item NO.:
31N4-10140Order(MOQ):
1pcsPayment:
T/T, WESTERN UNION, CHINESE BANK, PAYPALProduct Origin:
JAPANShipping Port:
Huangpu,GuangzhouLead Time：
In StockDesigned for excavator maintenance and replacement supply, this hydraulic swing drive reducer assembly delivers consistent rotary power transfer and reliable compatibility for Hyundai excavator fleets. It is an OEM-equivalent replacement solution for equipment distributors, repair workshops, and machine owners who need durable swing components to reduce downtime, restore slewing efficiency, and maintain stable operation during continuous working cycles. The 31N4-10140 gearbox belongs to the swing reduction gear category and is referenced for Hyundai R130/R140 series excavator applications.
| Part Number | 31N4‑10140 / 31N4‑10140 |
|---|---|
| Part Name | R130 R140 R150 Excavator Hydraulic Swing Gearbox Swing Reduction Drive Rotary Reducer Unit |
| Compatible Brand | HYUNDAI |
| Applicable Models | R130, R140, R150 Medium Construction Excavator |
| Application | Hydraulic drive system for excavator upper body slewing; widely applied in municipal engineering, highway construction, pipeline laying and bulk material stacking work |
| Material | High‑strength forged alloy steel + medium‑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 smooth speed reduction and reliable torque output for R130, R140, and R150 excavator upper structure rotation.
Converts hydraulic motor power through the reducer system to achieve smooth and controlled slewing movement.
Built with high-strength alloy components to withstand vibration, repeated loads, and long operating cycles in demanding jobsite environments.
Matches 31N4-10140 specifications for Hyundai R130, R140, and R150 excavator hydraulic swing drive systems.
FAQ
Q: What are the typical signs of a worn R130 swing gearbox?
A: Slow swing movement, reduced rotation force, abnormal operating noise, oil leakage, and unstable upper structure rotation may indicate gearbox wear.
Q: How does the 31N4-10140 rotary reducer improve excavator performance?
A: It reduces hydraulic motor speed while increasing output torque, helping the excavator achieve smoother and more efficient swing operation.
Q: Which excavator models can use the 31N4-10140 swing gearbox?
A: The 31N4-10140 swing reduction gear is commonly associated with Hyundai R130 and R140 series excavator applications. Buyers should confirm the exact machine model before ordering.
Q: Why choose a complete swing reduction gearbox assembly for repair projects?
A: A complete unit simplifies installation, reduces maintenance time, and helps restore reliable swing system performance more efficiently.
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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