203-60-63111 Final Drive for Komatsu PC120-6E PC130-7 PC130-7K | High-Efficiency

The Travel Motor (Final Drive) Part No. 20-360-63111 for Komatsu PC120-6E, PC130-7, and PC130-7K excavators is a high-performance propulsion unit engineered for medium-duty excavation and utility construction applications in the 12-13 ton machine class. This assembly integrates a reliable axial piston hydraulic motor with a precision multi-stage planetary reduction gearbox, delivering consistent tractive effort and smooth travel performance under diverse operating conditions. It serves as a direct OEM replacement, ensuring exact fitment and factory-specified hydraulic performance across these three compatible models.

These Komatsu excavators are widely deployed across global infrastructure and construction projects. Our travel motor final drive is regionally optimized to meet specific operational demands:

• North America & Europe: Designed for rental fleets and municipal utility work, featuring enhanced cold-weather sealing to maintain hydraulic efficiency during winter operations and rapid temperature fluctuations.
• Southeast Asia & Oceania: Equipped with heavy-duty floating seals that resist ingress of abrasive mud, clay, and tropical soils common in drainage, foundation, and plantation projects.
• Middle East & Africa: Reinforced housing and high-temperature seals protect against sand erosion and thermal stress in arid desert environments, ensuring reliable uptime in extreme conditions.

• Consistent High-Torque Output: The axial piston motor design delivers strong starting torque and reliable power transmission, enabling efficient tracking and maneuvering on uneven, soft, or sloped terrain.
• Precision Planetary Reduction: The multi-stage planetary gear set is manufactured to tight tolerances with heat-treated alloy steel components, ensuring even load distribution and extended service life between overhauls.
• Multi-Model Compatibility: Engineered to fit PC120-6E, PC130-7, and PC130-7K models with identical mounting dimensions, pilot bores, and hydraulic port locations, providing flexibility for fleet maintenance and inventory management.
• Robust Contamination Protection: Dual-cone floating seals prevent moisture, mud, and debris from entering the gearbox housing, ensuring reliable operation in wet, dusty, and muddy working environments.

• Hydraulic System Care: Regularly inspect case drain lines for restrictions, kinks, or blockages. A restricted drain line can generate excessive back pressure, leading to motor rotary group failure or seal damage. Always use clean hydraulic fluid and replace return filters according to the machine's service schedule.
• Gear Oil Management: Fill the planetary housing with the recommended extreme-pressure gear oil of the correct viscosity grade. Change the oil every 250-500 operating hours under normal conditions, and every 250 hours in severe applications such as demolition or quarry work. Examine drained oil for metallic particles as an early indicator of internal component wear.
• Mounting Bolt Integrity: When reinstalling the final drive, always fit new high-strength bolts. Apply a suitable thread locking compound to the bolt threads prior to torquing to factory specifications, preventing loosening caused by continuous vibration and shock loads during travel and digging operations.
• Pre-Start Priming Procedure: Before initial startup or after motor replacement, fill the motor case with clean hydraulic oil to purge trapped air pockets. Run the machine at low idle for several minutes, cycling the tracks forward and reverse, to ensure complete lubrication of all planetary components before engaging heavy loads.

Guangzhou Tieqi Construction Machinery Co., Ltd. (IRON CAVALRY) is strategically located in Guangzhou's Huangpu District. With nearly 15 years of experience, we specialize in engineering machinery hydraulics and are committed to delivering practical solutions and upholding our responsibilities.

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Our efficient execution and rigorous manufacturing approach ensure our products meet over 95% of original performance specifications. This commitment has built widespread trust in the industry.

We maintain a ready inventory of over 500 assembly types, providing access to more than 6,000 different parts. Hydraulic pump, control valve, travel, and swing assemblies are our core products, with particular expertise in large mining excavator components and hard-to-find items.

For large items, we use sturdy plywood crates secured with metal fasteners. Products are cushioned with bubble wrap and secured with wooden braces, with special attention given to protecting vulnerable parts. External reinforcement includes high-strength PET plastic strapping and waterproof wrapping.

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• One-stop solution provider for all hydraulic component needs
• High-quality products at competitive prices
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• Large inventory, short delivery times, and long warranty periods
• Professional expertise with accurate part number identification