56B-20-32200 Front Axle Driveshaft Propeller Shaft for Komatsu HM400-3 HM400-5 Articulated Dump Truck
56B-20-32200 56B2032300
Komatsu HM400-3 HM400 Propeller Shaft Articulated Dump Truck Propeller Shaft
Quantity
The item shown in the image is a Komatsu Yoke and Shaft Assembly (Part Number: 56B-20-32200). It serves as a short-distance, heavy-duty propeller shaft (drive shaft) designed specifically for the front axle system of articulated vehicles.
⚙️Function
The core purpose of this component is to transmit rotational torque and mechanical power from the heavy machinery's central transmission or transfer case directly to the front axle differential.
Rotational Power Transfer: It bridges the physical gap between the stationary drivetrain units and the shifting wheel axles.
Flexibility Under Stress: Because articulated trucks navigate rugged, uneven terrain, the shaft allows the driveline to continuously rotate while seamlessly adjusting to changing angles and vertical axle movements caused by the vehicle's suspension.
Flexibility Under Stress: Because articulated trucks navigate rugged, uneven terrain, the shaft allows the driveline to continuously rotate while seamlessly adjusting to changing angles and vertical axle movements caused by the vehicle's suspension.
🏗️Structure
This heavy-duty shaft is built as a compact, integrated assembly designed to withstand extreme torque thresholds without twisting or shearing. It consists of three primary structural sub-components:
Component Description & Material Build
Flanged End Yokes ：Located on both ends, these heavy-cast iron or forged steel yokes act as the anchoring connection points. They feature bolting holes to lock onto the transmission output flange on one end, and the axle input flange on the other.
Main Cylindrical Tube ：The central black steel tube acts as the core body of the drive shaft, handling high torsional forces while maintaining structural alignment.
Internal Universal Joints (U-Joints / Spiders) ：Housed directly behind the end yokes are universal joints (often sealed with the red greasing plug visible on the left side of the tube). These allow the shaft to flex up and down or side to side without stopping the rotation or causing drivetrain binding.
🚜Application
This exact assembly configuration is highly specialized for heavy-duty earthmoving and mining vehicles where massive structural articulation is required.
Primary Vehicle Fit: It is engineered explicitly for the Komatsu HM400-3 and HM400-3M0 series of Articulated Dump Trucks (ADTs).
Primary Vehicle Fit: It is engineered explicitly for the Komatsu HM400-3 and HM400-3M0 series of Articulated Dump Trucks (ADTs).
Placement System: It is installed within the front axle driveline network, keeping the truck operational in full-time 6x6 configuration.
Work Environments: Because it is mapped to a 40-metric-ton capacity vehicle, this component handles grueling operational shifts in open-pit mines, heavy construction zones, quarry operations, and large-scale infrastructure projects.
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