Facing swing gearbox wear, unstable rotation, or hydraulic torque loss in EX550H fleets? Wholesalers, mining contractors, and heavy equipment service teams need reliable slewing systems to maintain uptime and reduce costly downtime. RITO Excavator Swing Reduction Gearbox 4289284 EX550H delivers stable torque conversion and precise hydraulic-to-mechanical transmission for ultra-heavy excavator swing operations.
Item NO.:
4289284Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time：
2-3 DAYS
| Part Number | 4289284 / 9110045 |
|---|---|
| Part Name | Excavator Swing Reduction Gearbox & Rotary Slewing Drive Motor Assembly Unit |
| Compatible Brand | HITACHI |
| Applicable Models | EX550H Heavy Mining Excavator |
| Application | Excavator upper body slewing rotary hydraulic drive system |
| Material | High-strength alloy steel + wear-resistant bronze friction accessories |
| Product Color | Matte anti-rust industrial metallic gray |
| Working Temperature | -22℃ to +58℃ |
| Key Function | Convert high-pressure hydraulic power into stable heavy-duty slewing torque to drive excavator upper body rotation for open-pit ore excavation, hard rock breaking and bulk mineral loading mining operations |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |
Ensures smooth and powerful swing rotation for EX550H heavy-duty operations.
Matches 4289284 / 9110045 specifications for EX550H systems.
Built for extreme load, impact, and continuous working conditions.
Improves swing efficiency and reduces mechanical energy loss.
FAQ
Q:What must be checked before installation?
A:Ensure hydraulic system flushing, correct alignment, clean oil condition, and proper torque tightening before assembly.
Q:How to ensure correct model selection?
A:Verify part numbers 4289284 / 9110045 and confirm compatibility with EX550H swing systems.
Q:Can it operate in mining conditions?
A:Yes, it is engineered for high-load, high-impact, and dust-heavy environments such as mining, quarrying, and large-scale excavation operations.
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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