8460.29.01.30 - Internal cylindrical

This HTS classification, 8460.29.01.30, specifically designates internal cylindrical grinding machines. These machines are designed for the precise finishing of internal surfaces within cylindrical workpieces, utilizing grinding wheels or other abrasive materials. The key characteristic is the internal operation, differentiating them from machines that primarily operate on external surfaces.

Distinction from its sibling categories is crucial for accurate classification. HTS code 8460.29.01.10 covers external cylindrical grinding machines, including universal types, which operate on the outer diameter of cylindrical parts. The sibling category 8460.29.01.50, "Other," acts as a residual category for grinding machines that do not fit the more specific internal or external cylindrical definitions. Therefore, 8460.29.01.30 is reserved for machines exclusively or primarily engaged in internal cylindrical grinding operations.

As a leaf node, this classification does not have further subcategories. The scope of 8460.29.01.30 is therefore precisely defined by the term "Internal cylindrical." When classifying items under this code, the primary consideration should be whether the machine's design and intended use are for the grinding of internal cylindrical surfaces. This includes machines specifically engineered for operations such as bore grinding, internal thread grinding, or the grinding of internal splines where the grinding wheel enters and operates within the workpiece.