Final Drive for Komatsu HD785-7 (561-22-78401)

The part number 561-22-78401 corresponds to a final drive assembly used in the Komatsu HD785-7 and HD1500-8 dump trucks. It is a critical component for transferring power to the wheels and is available as a new, used, or reconditioned part from various suppliers.

Part Details

• Part Number: 561-22-78401 (also interchangeable with 561-22-78402 in some cases)
• Part Name: Final Drive Assembly
• Application: Komatsu HD785-7, Komatsu HD1500-8 Dump Truck
• Condition: Available as new original, new aftermarket, used, or rebuilt
• Material: Typically made from high-strength alloy steels with heat-treated components for durability
• Function: Houses the planetary gears that provide the final gear reduction and torque multiplication before the power reaches the wheels