Doosan DX340LC-9C Swing Bearing Assembly Precision Engineering for Reliable Rotation
Product Details
| Maintenance: | Gear Oil | Packing: | Standard Export Boxes |
|---|---|---|---|
| Compatible Equipment: | Excavators | Marketing Type: | Ordinary Product |
| Gear Options: | Inner/Outer/No Gear | Package: | Wooden |
| Model: | DX340LC-9C | Material: | High-quality Forged Steel |
| Corrosionresistance: | Surface Treated With Anti-rust Coating | Productname: | Excavator Slewing Bearing |
| Resistance: | Wear And Tear | Surface Treatment: | Heat Treatment |
| Trademark: | Neutral/OEM/According To Customized | ||
| Highlight |
Doosan DX340LC-9C swing bearing,Excavator slewing bearing assembly,Precision engineered swing bearing |
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Product Description
Introducing the Doosan DX340LC-9C Swing Bearing Assembly, a core component engineered for heavy-duty excavators. Designed to withstand extreme loads and deliver smooth 360° rotation, this assembly ensures precise maneuverability in mining, quarrying, and construction sites. Manufactured with high-carbon alloy steel and featuring double-lip seals, it offers exceptional durability and resistance to contamination. The four-point contact ball design optimizes load distribution, while the integral grease lubrication system reduces friction and maintenance. Compatible exclusively with Doosan DX340LC-9C excavators, this assembly undergoes strict quality control (ISO 9001) and is backed by global technical support. Explore our advanced manufacturing and rapid delivery service—ask about customized installation kits and lifetime lubrication plans.
The swing bearing employs a spherical roller structure with four-point contact geometry. This design enables axial and radial load capacity, ensuring smooth rotation under high torque. Key technologies include:
- Tapered Roller Geometry: Reduces sliding friction by 30%.
- Hydrostatic Lubrication: Pressurized grease channels for even coverage.
- Seal Compression Technology: Adaptive sealing under temperature fluctuations.
- Vibration Compensation Rings: Absorb shocks from uneven terrain.
- Excavator Swing Mechanisms: 360° rotation for earthmoving.
- Marine Cranes: Heavy lifting in ports with saltwater resistance.
- Mining Shovels: Pivoting in abrasive environments.
- Wind Turbine Installation: Rotation during foundation construction.
- Large-Scale Bulldozers: Enhanced maneuverability in rugged terrain.
- 18-Month Warranty: Covers manufacturing defects.
- Remote Diagnostics: Bearing health monitoring via cloud data.
- Field Training: On-site installation & maintenance workshops.
- Custom Sealing Solutions: Adapted for extreme cold/hot climates.
- Emergency Replacement: Next-day shipping (priority regions).

Q: Can this bearing be used with other excavator models?
A: Only compatible with Doosan DX340LC-9C; check part number before ordering.
Q: How often should grease be replenished?
A: Every 500 hours or 3 months (whichever comes first) using NLGI GC-LB grease.
Q: Is corrosion protection adequate for coastal use?
A: Yes, the coating withstands 1,000 hours of salt spray testing (ISO 9227).
Q: Can I install the bearing myself?
A: Recommend professional installation; incorrect mounting voids warranty.
Q: What’s the lead time for custom lubrication plans?
A: 2 weeks for design + 5 days shipping (after approval).
Product Highlights
Doosan DX340LC-9C Swing Bearing Assembly offers reliable 360° rotation with high-quality forged steel construction, heat treatment, and anti-rust coating. Features inner/outer/no gear options, wear resistance, and standard export packaging for excavators.
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