Komatsu Excavator Replacement Parts Final Drive for PC400-7, PC400LC-7, PC450-7

The 208-27-00280 Final Drive Assembly is a heavy-duty, high-capacity travel unit purpose-built for Komatsu 40 to 45-ton class heavy excavators, specifically the PC400-7, PC400LC-7, and PC450-7 models. This massive component pairs an advanced variable-displacement axial piston motor with a rugged, heavy-reduction planetary gear system, delivering the immense tractive effort required for large-scale mining, quarrying, and mass earthmoving environments.

These 40-ton class heavy machines are deployed in the world's most demanding conditions, and our travel drives are tailored to meet these distinct geographical challenges:

• North America & Australia: Designed for the rigorous demands of open-pit mining and heavy quarrying, offering exceptional fatigue resistance for continuous production cycles.
• Southeast Asia & Latin America: Equipped with specialized heavy-duty lifetime seals to combat deep mud, extreme humidity, and highly abrasive laterite soils.
• Europe & Middle East: Optimized for heavy infrastructure and pipeline trenching, ensuring maximum power transfer even in extreme temperature fluctuations and rocky terrains.

• Massive Tractive Power: Engineered with reinforced gearing to generate the exceptional drawbar pull necessary to propel 40+ ton machines across steep and uneven terrains.
• OEM-Level Compatibility: Precision-machined mounting flanges and perfectly aligned hydraulic connections guarantee flawless integration with the existing PC400/450-7 travel circuits.
• Heavy-Duty Fortification: Built using heat-treated, high-alloy steel components to withstand extreme shock loads and prevent structural deformation in rocky conditions.

• Case Drain Pressure Monitoring: Strictly maintain and inspect case drain lines and return filters; excess backpressure will quickly destroy the main motor shaft seals on these large-scale units.
• Lubrication Schedule: Drain and replace the planetary hub gear oil after the initial 100 hours, followed by routine intervals of 1,000 hours, constantly monitoring for metal shaving contamination.
• Sprocket and Hub Fasteners: Always torque sprocket bolts to exact factory specifications using heavy-duty thread-locking compounds, as these large excavators generate extreme rotational shear forces.
• Pre-Start Motor Bleeding: Prior to operation, the motor housing must be completely filled with clean hydraulic fluid through the topmost port to guarantee immediate lubrication of the rotary group and bearings.

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.

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.

• 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