56B-20-25000 Propeller Shaft Assembly Fits Komatsu HM400-1 HM400-1L Articulated Dump Truck Replacement Parts
56B 20 25000
Komatsu HM400-1 propeller shaft Komatsu HM400 aftermarket parts
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Here is the detailed technical breakdown of the function, structure, and application for the product shown in the image (56B-20-25000 Propeller Shaft / Driveshaft Assembly).
⚙️ Function
The main function of this heavy-duty propeller shaft is to transfer rotational energy and high torque continuously across the articulation joint of a massive multi-axle heavy hauler.
High-Load Power Delivery: It transmits huge torque loads directly from the central transmission drop box out to the front or rear driving axles.
Articulation & Oscillation Compensation: Unlike rigid vehicles, articulated trucks bend and twist in the middle. This assembly handles severe angular variations and axial length changes simultaneously as the truck steers and travels over uneven ground.
Vibration Dampening: It maintains a constant velocity rotation and absorbs shock loads from the rough terrain, preventing drivetrain shudder and preserving the life of the engine and axle differentials.
The main function of this heavy-duty propeller shaft is to transfer rotational energy and high torque continuously across the articulation joint of a massive multi-axle heavy hauler.
High-Load Power Delivery: It transmits huge torque loads directly from the central transmission drop box out to the front or rear driving axles.
Articulation & Oscillation Compensation: Unlike rigid vehicles, articulated trucks bend and twist in the middle. This assembly handles severe angular variations and axial length changes simultaneously as the truck steers and travels over uneven ground.
Vibration Dampening: It maintains a constant velocity rotation and absorbs shock loads from the rough terrain, preventing drivetrain shudder and preserving the life of the engine and axle differentials.
🏗️ Structure
Engineered for mining and earthmoving machinery, this assembly features a thick-walled, enclosed, and highly reinforced design to survive under-chassis rock strikes and heavy torque twist:
Enclosed Slip Shaft (Telescoping Core): Built with precision-machined internal splines that slide on an outer male shaft, enabling smooth expansion and contraction. The mechanism is entirely enclosed inside a thick steel casing to protect it from extreme job site conditions.
Heavy-Duty Universal Joints (U-Joints): Located at the flexible ends. They feature extra-thick cross journals (spiders) packed with heavy needle-bearing caps designed to withstand crushing torque forces during acceleration under load.
Multi-Bolt Companion Flanges: The connection plates on both ends feature an industrial multi-hole pattern. These bolt securely directly onto the output/input companion flanges of the machine’s drivetrain.
Sealed & Greaseable Design: Equipped with heavy-duty rubber seals to keep wet dirt, sand, and mining sludge out, alongside accessible grease nipples (zerk fittings) to regularly flush out the inner bearings and splines.
🚜 Application
This specific part number (56B-20-25000) is an essential drivetrain component designed exclusively for Komatsu Mining and Construction Vehicles.
Primary Machinery Fitment: It is custom-engineered for Komatsu HM400-1 and HM400-1L Articulated Dump Trucks (40-ton payload class heavy haulers).
Driveline Placement: It is installed mid-chassis, running straight through or right next to the central articulation hitch/oscillating ring that connects the front tractor cab cabin to the rear dump body frame.
Operating Environment: It operates in the harshest global heavy-industry sectors, such as large open-pit mining operations, deep rock quarries, massive civil infrastructure projects, and heavy earthmoving dams.
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Sasha | WhatsApp: +86 18368576202
Sasha | WhatsApp: +86 18368576202
