8458.91.10 - Vertical turret lathes

This HTS category, 8458.91.10, specifically covers vertical turret lathes that are numerically controlled. These machines are designed for metalworking operations where the workpiece rotates and the cutting tools are mounted on a turret that moves vertically. The key characteristic distinguishing this classification is the incorporation of numerical control systems, allowing for automated and precise execution of complex machining sequences, often for large and heavy workpieces in a vertical orientation.

This subcategory is distinct from its sibling, 8458.91.50 "Other," which would encompass numerically controlled lathes that do not fit the specific criteria of a vertical turret lathe. Therefore, if a numerically controlled lathe is not of the vertical turret design, it would fall under the "Other" category at this level.

Within the "Numerically controlled" heading for lathes, further subcategories exist to refine the classification. 8458.91.10.40 addresses used or rebuilt vertical turret lathes, indicating a distinction based on the condition of the machinery. The subsequent "Other" subdivision allows for the classification of new or reconditioned vertical turret lathes that do not meet the criteria for used or rebuilt.