8483.90.10 - Chain sprockets and parts thereof

This HTS category, 8483.90.10, specifically covers chain sprockets and their individual parts. Chain sprockets are toothed wheels designed to engage with a roller chain, commonly used in power transmission systems across various industries, including automotive, industrial machinery, and bicycles. This classification applies to the sprockets themselves, whether ready for installation or as individual components intended for repair or assembly.

It is important to distinguish this category from its siblings. While 8483.90 covers a broader range of transmission components, 8483.90.10 is exclusively for chain sprockets and their parts. Other sibling categories might include parts of bearing housings and plain shaft bearings, or parts of gearing, gear boxes, and other speed changers, which serve distinct functions within power transmission systems. This focus on chain sprockets ensures precise tariff application for these specific components.

Within the chain sprockets category, two subcategories exist to further refine classification: 8483.90.10.10 for forged sprockets and 8483.90.10.50 for other types. This distinction is driven by the manufacturing process, as forging can impart specific material properties and cost considerations that influence tariff treatment. Importers should carefully consider the manufacturing method of the chain sprocket or its part when making their classification determination.