Doosan DX500LC-9C OEM Travel Reducer Original Mottrol Final Drive for 50-Ton Mining Excavators

the original Mottrol final drive engineered for 50-ton mining excavators. As a critical planetary gear assembly, this travel reduction gear ensures maximum traction force and climbing ability in the harshest working conditions. Whether you need a complete travel drive replacement or a rebuilt final drive unit, our factory-direct supply guarantees 100% OEM compatibility and seamless integration with your DX500LC-9C undercarriage system. Backed by advanced multi-stage planetary gear technology and rigorous quality testing, this heavy-duty travel motor reducer delivers long-term durability for mining, quarrying, and large-scale earthmoving operations. Experience unmatched reliability and cost-effective operation with our comprehensive global shipping and warranty support.

???? Key Specifications

• 100% OEM Genuine: Manufactured by Mottrol, the original supplier for Doosan undercarriage components.
• Multi-Stage Planetary Gears: Optimized gear ratio delivers maximum torque multiplication for heavy loads.
• Reinforced Housing: High-strength cast iron shell resists impact and deformation in mining conditions.
• Premium Bearing System: Heavy-duty tapered roller bearings ensure smooth rotation under extreme loads.
• Integrated Parking Brake: Built-in spring-applied brake provides reliable holding force on slopes.
• Sealed Design: Multi-layer sealing prevents oil leakage and contamination from dust/water.

???? How It Works

The hydraulic travel motor (mounted on the reducer) converts hydraulic flow into high-speed, low-torque rotation. This rotation enters the travel reducer, where a sun gear drives multiple planet gears inside a stationary ring gear. The planet carrier outputs a much slower rotation with massively increased torque — exactly what a 50-ton excavator needs to crawl over rocks, climb grades, and reposition efficiently. The integrated brake locks the output shaft when no pilot pressure is present, preventing unwanted movement.

???? Applications

• Primary Fitment: Doosan DX500LC-9C 50-ton crawler excavator.

• Also Compatible With: Doosan DX490LC, DX520LC, and other models using the same travel reducer housing (confirm with serial number).

• Ideal For: Heavy earthmoving, mining, quarry work, and any job where reliable undercarriage drive is critical.