170301-00355G Swing Device for DOOSAN DX800 Excavator | Aftermarket Reliability

Part Type: Swing Device (Integrated Hydraulic Motor + Gearbox)
Model Compatibility: Exclusively designed for DOOSAN DX800 Excavator
Device Model: 170301-00355G
Manufacturer: تونكي (الصين)
Condition: Brand New / Aftermarket (meets or exceeds OEM performance standards)

Key Specifications:

Material:
- Housing: High-strength forged alloy steel (resistant to high pressure, impact, and corrosion)
- Internal Components: Hardened steel gears (HRC58-62), chrome-plated motor pistons, and precision-machined valve plates
- Seals & Bearings: PTFE composite seals (leak-proof) and heavy-duty tapered roller bearings
Design:
- Direct replacement for DOOSAN DX800 OEM swing devices, requiring no modifications to the hydraulic system
- Planetary gearbox integrated with a hydraulic motor for efficient torque amplification
- Labyrinth seals and breather valves to prevent contamination (dust, moisture)
Performance:
- Maximum Swing Torque: 42,000 N·m
  - Certifications: ISO 9001