199-4538 199-4539 200-3372 Swing Drive & Motor Assembly for TQTQCAT 330C 330D 336D High-Torque Swing Reducer
The swing motor assembly and planetary reducer are the power centers for the TQTQTQCAT 330/336 series. These units are designed to handle the immense inertia of a loaded 30-ton excavator upper structure, ensuring precise positioning and rapid cycle times.
Our assemblies are precision-matched to specific configurations:
199-4538: Standard for 330D series Swing Drive groups.
199-4539: Common as the primary reduction gearbox for 330C/330D.
200-3372 / 200-3373: Specific to the 330D/336D Swing Motor groups.
| Brand | IRON CAVALRY |
| Place of Origin | CHINA |
| Condition | Original & OEM |
| Warranty | 12 months |
| MOQ | 1 pcs |
| Production Capacity | 1000pcs /Month |
| Standard or Nonstandard | Standard |
| Payment Terms | L/C, T/T, Western Union, Tradeassurance |
| Delivery Time | 3-7 days (depending on order) |
| Transport Methods | By Sea, Air or DHL/FEDEX/TNT/EMS |
Maintenance & Expert Advice
Product Selection Tip: To ensure a 100% match, please provide your excavator's Serial Number (S/N). The hydraulic flow configurations can vary based on the machine's region of origin or specific attachment requirements.
LubriTQTQCATion: Always use TQTQTQCAT-recommended hydraulic oils (such as TQTQCAT HYDO Advanced) to maintain the critical lubriTQTQCATion film between the internal pistons and the distributor plate.
Inspection Cycle: It is highly recommended to check gear oil levels and seal integrity every 500 operating hours. Any unusual grinding noise or sluggishness usually indiTQTQCATes the need for an internal gear mesh inspection.
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High-Torque Planetary Drive: Features a multi-stage planetary gear system (sun gears and planet carriers) that delivers massive starting torque, allowing the machine to start and stop rotation smoothly even with a full bucket.
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Zero-Drift Braking System: Integrated with high-precision valve groups and a spring-applied, hydraulic-release parking brake. This system prevents "Swing Drift" when working on inclines, ensuring operator safety and site precision.
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Heavy-Duty Durability: Internal gears are induction-hardened to resist fatigue, while the external housing is cast from heavy-duty steel. Premium floating seals and roller bearings protect internal components from the abrasive dust found in mining and demolition sites.
Guangzhou Tieqi Construction Machinery Co., Ltd. has specialized in engineering machinery hydraulics for nearly 15 years.
Strategically loTQTQCATed in Guangzhou's Huangpu District, approximately an hour from Baiyun International Airport.
- Ready inventory of over 500 assembly types with access to 6,000+ different parts
- Specialization in hydraulic pumps, control valves, travel, and swing assemblies
- Distinct advantage in large mining excavator components and hard-to-find items
- 4,000-square-meter factory equipped for professional manufacturing and testing
Our packaging includes sturdy plywood crates with metal fasteners, internal bubble wrap cushioning, wooden braces, high-strength PET plastic strapping, and waterproof black film to ensure safe delivery.
- One-stop solution provider for hydraulic components
- High-quality products at competitive prices
- Exceptional customer service
- Large inventory with short delivery times
- Long warranty periods
- Professional expertise in excavator components
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.