Komatsu PC600LC-8 PC650LC-8EO PC700LC-8EO Excavator Swing Motor 706-75-01461 706-75-01460 Device High Quality Swing Assembly

This mining grade heavy-duty high-precision swing motor assembly component (Swing Motor Device) has a core original part number of 706-75-01461 and is perfectly compatible with iteration part number 706-75-01460. This assembly serves as the absolute fluid power center for the 360 ° rotation and large inertia braking of the upper body, specially designed for Komatsu heavy-duty hydraulic excavators, perfectly matching core mining flagship models such as PC600LC-8, PC650LC-8EO, and PC700LC-8EO in the 60 to 70 ton class. The product is based on first principles for integrated optimization of ultra-high pressure plunger anti shear and low shear flow channels, perfectly bearing the extreme loads caused by frequent directional changes of giant excavators, ensuring absolute certainty of output torque. The physical dimensions of the product packaging are approximately 610mm × 520mm × 560mm, with an overall net weight of approximately 165kg. The original factory standard position is precisely aligned.

"Extreme cleaning and torque tightening: Before lifting and docking, the input flange end face of the rotary reducer must be thoroughly cleaned to ensure precise and stress free meshing of the output gear shaft. All high-strength fastening bolts must be tightened using torque wrenches, strictly following the factory's specified torque for symmetrical and phased cross tightening to prevent local stress concentration.

Forced oil injection (core avoidance pit): Do not connect the case drain pipe incorrectly when connecting the high-pressure pipeline. Before starting the engine, it is necessary to fill the top of the swing motor housing with clean hydraulic oil through the bleed/fill port. It is strictly prohibited to start dry grinding, otherwise the internal plunger and distribution plate will undergo irreversible physical erosion within 3 seconds of ignition.

No load micro exhaust transition: After the first ignition, control the upper body to rotate left and right at a small angle and slow speed alternately for 10-15 minutes in an unloaded state, thoroughly exhaust the air inside the circuit, and confirm that the thermodynamic state is stable before gradually applying normal operating loads."