8429.52 - Machinery with a 360˚ revolving superstructure:

HTS Code 8429.52 encompasses self-propelled excavators and shovel loaders characterized by a superstructure that can rotate a full 360 degrees. These machines are designed for digging, loading, and moving materials, with their revolving upper structure allowing for versatility in operation without needing to reposition the entire vehicle. This distinguishes them from front-end shovel loaders (8429.51), which typically have a fixed cab and boom assembly that pivots rather than revolves, and from other machines within the 8429 heading that may not possess the 360-degree revolving capability.

Within this category, further distinctions are made to refine classification. Subcategory 8429.52.10 specifically addresses excavators and shovel loaders fitted with common digging and loading attachments such as backhoes, shovels, clamshells, and draglines. This covers the majority of specialized excavating equipment with a revolving superstructure. The residual subcategory, 8429.52.50, captures any other self-propelled machinery with a 360-degree revolving superstructure that fits the general description of excavators or shovel loaders but does not fall under the specific attachment-based classification.