KOMATSU D375A-5 D375A-5D EXCAVATORS FINAL DRIVE ASSEMBLY 195-27-00651 FINAL DRIVE MOTOR HIGH QUALITY TRAVEL MOTOR CONSTRUCTION MACHINERY

The Final Drive Assembly (Part No. 195-27-00651) for Komatsu D375A-5 and D375A-5D bulldozers is an ultra-heavy-duty travel propulsion unit engineered for large-scale dozing, ripping, and land-clearing operations in the 70-ton machine class. This assembly integrates a high-displacement axial piston hydraulic motor with an extremely rugged multi-stage planetary reduction gearbox, delivering extraordinary tractive effort and reliable propulsion performance under continuous extreme-load conditions. It is designed as a direct OEM replacement, ensuring precise fitment and factory-specified performance for both standard and desert configuration models.

• North America & South America: Engineered for large-scale mining, heavy construction, and land-clearing operations, with reinforced housing and enhanced sealing to withstand extreme temperature variations, abrasive materials, and continuous high-cycle operation.
• 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.
• Middle East & Africa: High-temperature seals and corrosion-resistant materials protect against sand erosion, thermal stress, and airborne particulate contamination in arid desert and semi-arid environments, with specific optimization for the D375A-5D desert configuration.

• Ultra-High Torque Capacity: The high-displacement axial piston motor delivers extraordinary starting torque and smooth power transmission, enabling the D375A-5 to push heavy loads, rip through compacted materials, and maneuver efficiently on steep terrain.
• 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.
• Cross-Model Compatibility: Engineered to fit both D375A-5 and D375A-5D bulldozers with identical mounting dimensions, pilot bores, spline connections, and hydraulic port locations, providing flexibility for mixed fleet maintenance.
• Desert Configuration Optimization: Specifically compatible with the D375A-5D's enhanced cooling and filtration systems, ensuring reliable operation in extreme high-temperature and high-dust environments.
• Mining-Grade Structural Integrity: The ductile iron housing features massive reinforced ribbing and stress-relieved construction to resist structural fatigue under continuous shock loading from dozing and ripping operations. Dual-cone floating seals with heavy-duty dust wipers provide robust protection against contamination in the harshest environments.

• 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. Maintain strict hydraulic fluid cleanliness standards and replace return filters at intervals prescribed for heavy equipment.
• Gear Oil Management: Fill the planetary housing with the recommended extreme-pressure gear oil of the correct viscosity grade for heavy-duty applications. Change the oil every 250-500 operating hours under normal conditions, and every 250 hours in severe applications such as continuous dozing, ripping, or push-loading. Perform regular oil sampling and 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. 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 dozing and ripping 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.

Manufacturing Facility Exterior

Factory Production Line

Trade Show Exhibition

Professional Team

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.

Secure Product Packaging Example

• 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