8406.90.20.00 - Rotors, finished for final assembly

HTS Code 8406.90.20.00 specifically covers rotors that have undergone significant manufacturing processes, making them ready for immediate integration into the final assembly of steam turbines and other vapor turbines. These rotors are distinguished by their advanced state of finish, implying that all essential machining and finishing operations are complete, and they are prepared for direct installation.

This category differentiates itself from sibling HTS codes by the degree of manufacturing advancement. Unlike rotors classified under 8406.90.30.00, which are merely cleaned or machined to remove imperfections like fins, gates, sprues, and risers or prepared for further finishing machinery, the rotors under 8406.90.20.00 are considered substantially complete and functionally ready for assembly. It is also distinct from 8406.90.40.00, which specifically covers the blades, whether rotating or stationary, of turbines.

As this is a leaf node, there are no further subcategories under 8406.90.20.00. Therefore, the classification is highly specific to finished rotors for steam and vapor turbines. Examples of items falling under this code would include dynamically balanced rotors with all necessary surfaces machined to tolerance, ready for bearing installation and connection to the drive train, and often incorporating or prepared for the mounting of turbine blades. The focus is on the rotor itself as a finished component for turbine assembly.