8459.61.00 - Numerically controlled

This category encompasses numerically controlled milling machines that operate by removing metal. These machines are designed for automated machining operations, utilizing programmed instructions to control the tool path and machining parameters. The "numerically controlled" aspect is a key differentiator, indicating a high degree of automation and precision in their operation compared to manually operated milling machines.

This specific subheading, 8459.61.00, is distinct from its sibling category, 8459.69.00, which covers "Other" milling machines. The distinction lies in the control system: 8459.61.00 exclusively covers machines that are numerically controlled, while 8459.69.00 would include milling machines that are not numerically controlled or fall outside the specific parameters of numerically controlled machines.

Within this numerically controlled milling machine category, two subcategories exist to further refine classification. The subheading 8459.61.00.40 is specifically designated for used or rebuilt numerically controlled milling machines, recognizing potential differences in valuation and origin documentation for such items. The remaining numerically controlled milling machines, which are neither used nor rebuilt, are classified under subheading 8459.61.00.80.