8458.19.00.50 - Single spindle

This HTS classification, 8458.19.00.50, specifically designates single-spindle automatic bar and/or chucking machines within the broader category of horizontal lathes. These machines are designed for the automated machining of metal parts, where the workpiece is held either in a bar feeder or a chuck. The key characteristic is the presence of a single spindle, meaning that the workpiece rotates around one axis, and the tooling is advanced or moved relative to this single rotating element to perform operations such as turning, facing, drilling, and threading.

This category is distinguished from its sibling, 8458.19.00.70, by the number of spindles. While this classification applies to machines with only one spindle, the sibling category covers those equipped with multiple spindles, which allow for more complex operations and potentially greater efficiency by performing multiple machining steps simultaneously or in sequence. The "single spindle" designation is crucial for accurate classification, focusing on the core operational configuration of the machine.

As a leaf node in the HTS structure, this category represents a specific and definitive classification for single-spindle automatic bar and/or chucking machines. Therefore, there are no further subcategories to introduce. The classification hinges entirely on the machine's design featuring a single spindle and its automated bar and/or chucking capabilities, differentiating it from other types of lathes and multi-spindle automatic machines.