8483.20.40 - Flange, take-up, cartridge and hanger units

This HTS category, 8483.20.40, specifically covers flange, take-up, cartridge, and hanger units that are designed to house ball or roller bearings. These units are integral components in power transmission systems, providing support and alignment for rotating shafts. They are characterized by their integrated housing which facilitates simpler installation and maintenance compared to separate bearing and housing components. The primary function is to reduce friction and support mechanical loads, enabling smooth rotational movement in various machinery.

Distinguishing this category from its sibling, 8483.20.80 (Other), is the crucial detail of the bearing type. While 8483.20.80 encompasses housed bearings that do not fall under the specific subdivisions of ball or roller bearing incorporation detailed further, 8483.20.40 is reserved for those units where the bearing is explicitly designed to incorporate either ball or roller elements within its construction. This precise distinction ensures accurate tariff application based on the fundamental bearing technology employed.

Within this classification, further subdivisions exist to differentiate based on the specific type of bearing incorporated. The subcategories 8483.20.40.40 and 8483.20.40.80 respectively distinguish units incorporating ball bearings from those incorporating roller bearings. This granular breakdown allows for a more precise classification, acknowledging the different load capacities, speeds, and operational characteristics associated with ball versus roller bearing technology, which can be relevant for specific import or export regulations and duties.