8460.23.00 - Other cylindrical grinding machines, numerically controlled

This category, HTS Code 8460.23.00, specifically covers other cylindrical grinding machines that are numerically controlled. These machines are designed for precision grinding of cylindrical surfaces on metal or cermet workpieces. Unlike centerless grinders, these machines typically employ between-centers grinding techniques, where the workpiece is supported by centers and rotated by a drive mechanism. The "numerically controlled" aspect signifies advanced automation, allowing for precise execution of complex grinding operations based on pre-programmed instructions.

Distinguishing this category from its siblings, 8460.22.00 (centerless grinding machines, numerically controlled) is crucial. While both are numerically controlled cylindrical grinders, centerless machines process workpieces without the use of centers, relying on a regulating wheel and an abrasive wheel. HTS 8460.23.00, conversely, is for cylindrical grinders that *do* utilize centers. Category 8460.24.00, "Other, numerically controlled," would encompass numerically controlled grinding machines that do not fit the specific cylindrical grinding definitions of the preceding subheadings.

Within this category, further distinctions are made for classification purposes. Subcategory 8460.23.00.40 applies to cylindrical grinding machines that are either used (pre-owned) or rebuilt. Subcategory 8460.23.00.80 is reserved for all other new or not otherwise specified cylindrical grinding machines meeting the numerically controlled criteria. This differentiation aids in tracking the trade flow of both new equipment and refurbished machinery.