CAT385C, 390D Excavator Travel Reducer Assembly, Original Part Number Correspondence: 353-0590 / 353-0589 / 333-2897

Detailed Explanation of the CAT385 Walking Reducer Assembly
This is the walking reducer (final drive) assembly compatible with the CAT385 series excavators. It is also a core hydraulic component of engineering machinery commonly encountered in your business. Below is a breakdown of key information:

Structure and Function
It is an integrated final drive unit consisting of two main parts:
1. Upper Hydraulic Walking Motor (Yellow Part)
- Equipped with CAT original dual-speed axial piston motor, supporting automatic high-low speed switching. It automatically adjusts operating conditions according to traction requirements, balancing heavy-load climbing efficiency and high-speed transfer efficiency.
- Integrates protective components such as brake valves and relief valves to prevent slope slippage or overload damage during operation.
2. Lower Three-Stage Planetary Reducer (Black Part)
- Features a three-stage planetary gear reduction structure, converting the motor's high-speed low-torque output into the low-speed high-torque required for track driving. The reduction ratio can reach dozens of times, perfectly matching the heavy-duty requirements of large excavators.
- The housing is made of high-strength alloy steel, with flanges and bolt holes conforming to standard CAT specifications, allowing direct adaptation to installation positions of models such as 385C/390D.
Core Features and Compatibility Information
| Item | Details |
| Compatible Models | Large excavators such as CAT385C, 390D; Original part numbers: 353-0590 / 353-0589 / 333-2897 |
| Performance Advantages | High torque output, dual-speed automatic switching, integrated braking, IP67-level sealing to prevent oil leakage |
| Application Scenarios | Track drive in mining, large earthwork projects, and heavy-duty operations |
| Product Condition | Pre-assembled complete unit, factory-filled with gear oil, ready for bolted installation without additional processing. |