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HS Code 8483 encompasses transmission shafts, bearings, gears, mechanical transmission elements, flywheels, pulleys, clutches, and coupling devices. The classification includes detailed subcategories for transmission shafts/cranks (8483.10), bearing housings with bearings (8483.20), bearing housings without bearings (8483.30), gears/gearing (8483.40), flywheels/pulleys (8483.50), clutches/shaft couplings (8483.60), and parts (8483.90). This power transmission components category includes mechanical elements that transfer, modify, or control motion and power in machinery. Products range from simple pulleys to complex gearboxes integrating multiple transmission functions. Technical specifications focus on load capacity, speed ratings, precision, efficiency, and durability under operational conditions. Applications span all machinery sectors requiring motion transfer or transformation. This division represents fundamental mechanical building blocks that enable the controlled transfer of rotational motion and torque between driving and driven components, providing essential functions including speed variation, direction changes, and torque multiplication in mechanical systems.