Komatsu D375-6 Power Transmission Assembly 195-22-80051 Final Drive Drive Train Heavy Duty Excavator

This mining grade heavy-duty high-precision final drive/drive train assembly, with original Komatsu core part number 195-22-80051. This top-level transmission device is specially designed for Komatsu's ultra large tracked mining equipment, perfectly matching the star models of 70 ton giant flagship bulldozers such as Komatsu D375A-6. The product is based on first principles for integrated optimization of ultra-high strength multi-stage planetary gear systems, seamlessly carrying extreme alternating impact loads under tens of tons of heavy load peeling and bulldozing conditions, ensuring absolute certainty of propulsion torque. The physical dimensions of the product packaging are approximately 920mm × 850mm × 880mm, with an overall net weight of approximately 760kg.

"Extreme cleaning and torque tightening: Before using heavy-duty lifting equipment for docking, the installation surface of the trolley frame base and the contact surface of the drive wheel hub must be absolutely flat and free of any foreign objects or rust. All ultra-high strength fastening bolts must be tightened using a large torque wrench, strictly following the factory's specified torque for multi-stage, symmetrical cross tightening to prevent local stress concentration from causing shell deformation.

Forced filling of inner cavity (core avoidance pit): After the mechanical structure of the assembly is locked and connected, it is necessary to fill the original heavy-duty high-grade gear oil from the gearbox filling port to the oil level standard line before officially putting it online or moving the machine. Dry grinding operation is strictly prohibited, otherwise the internal multi-stage planetary gears and heavy-duty bearings will undergo irreversible physical erosion due to high temperature within a few seconds of starting.

No load micro motion transition: Before the first operation, perform a slow and alternating suspended or micro motion trial run for 15-20 minutes to fully cover and lubricate each meshing pair with heavy-duty gear oil, closely monitor the operating sound, and confirm that the thermodynamic state of the system is stable before gradually applying normal mining operation loads."