Komatsu PC400-5 PC410LC-5 PC450-5 Final Drive Assembly | Travel Motor 208-27

The 208-27-00102 Final Drive Assembly is a heavy-duty track propulsion unit engineered specifically for Komatsu PC400-5, PC410LC-5, and PC450-5 hydraulic excavators in the 40-45 ton machine class. This integrated drivetrain combines a high-displacement axial piston travel motor with a rugged two-stage planetary reduction gearbox, delivering the substantial torque output and impact load resistance required for heavy excavation, mining overburden removal, and large-scale earthmoving operations.

These PC400-5 series excavators operate across diverse global job sites, and our final drive is optimized to meet region-specific operational challenges:

• North America & Europe: Configured with enhanced bearing preload and strengthened gear tooth profiles to withstand the high-cycle demands of scrap processing, demolition, and pipeline trenching applications
• Southeast Asia & Oceania: Equipped with heavy-duty dual-cone floating seals and stainless steel hardware to prevent contamination from abrasive volcanic soils, tropical clay, and coastal salt spray in marine reclamation projects
• Africa & Middle East: Features optimized internal oil galleries and enlarged heat dissipation surfaces on the motor housing to maintain stable operating temperatures during extended shifts in open-pit mines and desert quarry operations exceeding 55°C ambient temperature

• High-Capacity Planetary Reduction: Twin-stage planetary gearset with optimized ratio selection delivers maximum tractive effort at low speeds while maintaining productive travel speeds for daily haul road cycling between excavation zones
• Hydraulic System Compatibility: Fully compatible with Komatsu's Open Center hydraulic system architecture, providing smooth directional control and proportional speed modulation through pilot-operated travel control valves
• Structural Durability: Heat-treated alloy steel housing, case-hardened planetary gears, and induction-hardened output shaft splines resist fatigue failure and torsional stress under repetitive shock loading from hard rock excavation and heavy bucket penetration
• Direct OEM Fitment: All mounting bolt patterns, hydraulic port thread sizes (JIC and SAE O-ring), and pilot line port locations are machined to match original Komatsu specifications for straightforward replacement without undercarriage modifications

• Hydraulic System Care: Routinely inspect case drain line backpressure; readings exceeding 7 kg/cm² indicate internal motor leakage requiring immediate attention. Replace hydraulic return filters every 250 operating hours and pilot filters every 500 hours to prevent contaminant circulation through travel motor circuits
• Gear Oil Management: Drain and refill planetary gearbox oil every 500 operating hours under normal conditions, or every 250 hours in severe dust, high temperature, or high-moisture environments. Always use SAE 80W-90 API GL-5 mineral gear oil; do not substitute synthetic oils unless specifically validated for floating seal compatibility
• Mounting Bolt Replacement Protocol: Always install new OEM-specification mounting bolts coated with medium-strength thread locker compound. Torque to manufacturer specifications in a three-pass cross-pattern sequence at 50%, 75%, and 100% of final torque value to ensure even clamping force distribution
• Pre-Start Priming Procedure: Before initial engine startup following final drive installation, fill the travel motor case cavity completely with clean ISO VG 46 hydraulic oil through the uppermost port while rotating the motor manually to displace trapped air. Failure to prime will result in immediate piston shoe scuffing and valve plate scoring upon first actuation

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
• Exceptional customer service and support
• Large inventory, short delivery times, and long warranty periods
• Professional expertise with accurate part number identification