8483.20.40.40 - Incorporating ball bearings

This HTS category, 8483.20.40.40, specifically encompasses housed bearings that are designed to incorporate ball bearings. These units provide a pre-assembled bearing system where the ball bearing is integrated within a housing, simplifying installation and often offering improved protection and alignment. Examples include pillow block units, flange units, and take-up units, all featuring ball bearings as their rolling element.

This classification is distinguished from its sibling category, 8483.20.40.80, by the type of bearing incorporated. While this category is exclusively for housed units with ball bearings, the sibling category covers identical housed units but specifically containing roller bearings. The distinction lies in the geometry and load-carrying characteristics of the rolling elements used.

As this is a leaf node within the HTS structure, there are no further subcategories. Therefore, classification under this heading relies on accurately identifying the product as a housed bearing unit that unequivocally uses ball bearings as its internal rolling element. The housing itself can be made from various materials, and the primary determinant for inclusion is the presence and type of the incorporated bearing.