Heavy Duty Travel Gearbox With Motor 31QA-40021 Straight Bolt Up Swap For Hydraulic Track Drive Assembly On Hyundai Excavator R360LC-9 R380LC-9 R380LC-9SH And HX380L Frames
UPC:
✔️ 31QA-40021, straight bolt fit for Hyundai R360 R380 drive systems.
This single travel gearbox and motor unit directly replaces worn-out final drives on heavy duty excavators. Install it under the hood of your machine to restore reliable track movement and stop slippage during tough digging jobs.
✅ Part number 31QA-40021 matches original factory specs exactly for proper torque transfer.✅ Built as a heavy duty travel gear box paired with a robust drive motor.
✅ Compatible with R360LC-9 R380LC-9 R380LC-9SH and HX380L chassis frames.
✅ Single pack size includes everything needed for fast hardware installation.
💡 What is a heavy duty travel gearbox with motor used for maintaining excavator track drive assemblies?
- Directly replace worn hydraulic motors on heavy rigs without touching frame welds because it bolts right in place. - Handles massive torque transfers from the swing circle down to the sprocket wheels so your machine pushes through soft ground smooth. - Sealed internal gears stop dust penetration during concrete pouring days keeping performance consistent all season long. - Finding a matched bolt-up swap saves cash on shop labor charges when backhoes need quick turnarounds before nightfall.