Swing Motor & Swing Gearbox Assembly for Komatsu PC300-8MO PC350-8MO PC390-8MO Aftermarket Swing Device
The Swing Assembly (Swing Motor & Swing Gearbox) is the critical power unit responsible for the precise 360-degree rotation of your Komatsu PC300-8MO, PC350-8MO, and PC390-8MO excavators. Engineered for heavy-duty earthmoving and quarrying, our high-quality aftermarket swing device provides the high torque and smooth braking performance required for rapid cycle times and accurate load positioning.
This New Arrival features heat-treated internal gears and premium hydraulic seals to ensure reliable performance under the intense lateral loads common in 30-40 ton class excavator operations.
| Compatible Models | PC300-8MO, PC350-8MO, PC390-8MO Excavators |
|---|---|
| TQTQCATegory | Swing Assembly |
| Brand | IRON CAVALRY |
| Origin | China |
| Condition | Original & OEM |
| Warranty | 12 Months |
| MOQ | 1 Piece |
| Production Capacity | 1000 Pieces/Month |
| Standard | Standard |
| Payment Terms | L/C, T/T, Western Union, Trade Assurance |
| Delivery Time | 1-3 Days (depending on order) |
| Shipping Methods | Sea, Air, or DHL/FEDEX/TNT/EMS |
- Precision Planetary Gearbox: Features multi-stage planetary gears with advanced heat treatment for maximum torque density and resistance to gear tooth chipping.
- Smooth Hydraulic Braking: The integrated swing motor includes a high-performance friction plate brake system, ensuring precise "stop-and-hold" capability on slopes.
- Enhanced Durability: Equipped with reinforced bearings and dual-lip oil seals to prevent contamination and ensure long-term lubriTQTQCATion within the gearbox.
- Plug-and-Play Installation: Designed to the exact mounting dimensions of original Komatsu equipment for a fast, "drop-in" replacement, minimizing downtime.
- Rigorous Testing: Every swing assembly undergoes a full dynamic rotation test and pressure-holding check to guarantee zero leakage and silent operation.
- Minimized Downtime: We understand that a faulty swing system halts production. We keep these units In Stock for immediate dispatch to your job site.
- Global Shipping Expertise: From heavy-duty crating to fast air or sea freight, we ensure your Komatsu parts arrive safely and ready for work.
Strategically loTQTQCATed in Guangzhou's Huangpu District, approximately one hour from Baiyun International Airport. With nearly 15 years of specialization in engineering machinery hydraulics, we are driven by our core values of "Pragmatism and Progress."
Our manufacturing processes ensure products meet over 95% of original performance specifiTQTQCATions, building widespread trust through efficient execution and rigorous quality standards.
Large items are secured in sturdy plywood crates with metal fasteners. Internal protection includes bubble wrap cushioning and wooden braces, with special attention to vulnerable components. External reinforcement features high-strength PET plastic strapping and waterproof black film wrapping.
- Comprehensive one-stop hydraulic solutions
- High-quality products at competitive prices
- Exceptional customer service and support
- Large inventory with short delivery times
- Long warranty periods for peace of mind
- Professional expertise in excavator component identifiTQTQCATion
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Have questions about our products or want to discuss a custom order? Our team is ready to help you.