KOMATSU PC2000-8 EXCAVATORS FINAL DRIVE ASSEMBLY 21T-27-00410 21T-27-00400 FINAL DRIVE MOTOR HIGH QUALITY TRAVEL MOTOR CONSTRUCTION MACHINERY

The Final Drive Unit (Part Nos. 21T-27-00410 and 21T-27-00400) for the Komatsu PC2000-8 hydraulic mining shovel is an ultra-heavy-duty travel propulsion unit engineered for large-scale open-pit mining and heavy earthmoving operations in the 200-ton machine class.

This assembly integrates a massive high-displacement axial piston hydraulic motor with an extremely rugged multi-stage planetary reduction gearbox, delivering extraordinary tractive effort and reliable travel performance under continuous extreme-load conditions.

Designed as a direct OEM replacement, these assemblies ensure precise fitment and factory-specified hydraulic performance for the PC2000-8 model, with separate part numbers for left-hand (21T-27-00410) and right-hand (21T-27-00400) drive positions.

• North America & South America: Engineered for large-scale open-pit copper, gold, coal, and oil sands mining operations, with reinforced housing and enhanced sealing to withstand extreme temperature variations, abrasive slurry, and continuous high-cycle operation in the harshest mine environments.
• Australia & Oceania: Equipped with heavy-duty floating seals that resist ingress of highly abrasive quartz-rich soils, red dust, and laterite materials common in iron ore and coal mining environments.
• Africa & Middle East: High-temperature seals and corrosion-resistant materials protect against sand erosion, thermal stress, and airborne particulate contamination in arid desert and semi-arid mining regions.

• Ultra-High Torque Capacity: The massive displacement axial piston motor delivers extraordinary starting torque and smooth power transmission, enabling the PC2000-8 to maneuver efficiently on steep mine ramps, soft overburden, and uneven bench floors with exceptional load-bearing capability.
• Heavy-Duty Multi-Stage Planetary Reduction: The gearbox employs case-hardened alloy steel planetary gears with precision-ground tooth profiles, ensuring uniform load distribution across multiple stages and maximizing service life between major rebuilds.
• Dual Part Number Configuration: Engineered with separate part numbers for left-hand (21T-27-00410) and right-hand (21T-27-00400) drive positions, ensuring correct rotational direction and mounting orientation for each side of the machine.
• Super-Class Structural Integrity: The massive ductile iron housing features heavily reinforced ribbing and stress-relieved construction to resist structural fatigue under continuous shock loading from tramming over rough mine floors. Dual-cone floating seals with heavy-duty dust wipers provide robust protection against contamination.
• Precision OEM Replacement Fit: All mounting bolt patterns, pilot diameters, spline connections, and hydraulic port locations match original Komatsu specifications for the PC2000-8 model, enabling seamless installation with minimal machine downtime.

• Hydraulic System Care: Routinely inspect case drain lines for restrictions, kinks, or blockages. A restricted drain line can generate excessive back pressure, leading to catastrophic motor rotary group failure and extended machine downtime. Maintain strict hydraulic fluid cleanliness standards using high-efficiency filtration and replace return filters at intervals prescribed for ultra-heavy mining equipment.
• Gear Oil Management: Fill the planetary housing with the recommended extreme-pressure gear oil of the correct viscosity grade for ultra-heavy-duty mining applications. Change the oil every 250-500 operating hours under normal conditions, and every 250 hours in severe applications such as continuous mining production, quarry operations, or heavy ripping. Perform regular oil sampling and spectrometric analysis to detect metallic particles as an early indicator of gear or bearing degradation.
• Mounting Bolt Protocol: When reinstalling the final drive assembly, always fit new high-strength bolts meeting the specified grade and torque requirements. Apply a suitable thread locking compound to the bolt threads prior to torquing to factory specifications, preventing loosening caused by extreme vibration and shock loads during tramming and digging cycles.
• Pre-Operation Priming Procedure: Before initial startup or after final drive replacement, fill the motor housing 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 production 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.

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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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