4010.35.41.00 - Of a width exceeding 20 cm

This HTS classification covers endless synchronous belts made from vulcanized rubber, designed for power transmission. Specifically, these belts have an outside circumference greater than 60 cm but not exceeding 150 cm. The defining characteristic of this subcategory is the composition of their textile components: man-made fibers must constitute the predominant weight compared to any other single textile fiber used within the belt's construction. This includes belts where nylon, polyester, or other synthetic fibers are the primary textile reinforcement by weight.

This classification is distinguished from its sibling category, 4010.35.45.00 (Other), which encompasses endless synchronous belts within the same dimensional range (circumference > 60 cm and ≤ 150 cm) but whose textile components do not predominantly feature man-made fibers. For instance, if a belt's textile reinforcement is primarily composed of cotton or natural fibers, it would likely fall under the "Other" sibling category. The key differentiator is the weighting of man-made fibers within the textile reinforcement.

As this is a leaf node, there are no further subcategories to introduce. Therefore, classification under 4010.35.41.00 hinges on a thorough examination of the belt's construction, confirming it is an endless synchronous belt with the specified circumference, and critically, verifying that man-made fibers represent the majority by weight of any textile material integrated into its structure. This ensures accurate categorization based on material composition and intended application within the broader scope of rubber transmission belts.