4010.33 - Endless transmission belts of trapezoidal cross section (V-belts), V-ribbed, of an outside circumference exceeding 180 cm but not exceeding 240 cm:

This HTS category, 4010.33, specifically covers endless transmission belts of vulcanized rubber that have a trapezoidal cross-section, commonly known as V-belts. This includes both V-ribbed belts and those that are not ribbed, provided their outside circumference falls within the range of greater than 180 cm and not exceeding 240 cm. These belts are designed for transferring power between rotating shafts in various industrial and automotive applications.

Distinguishing this category from its siblings, 4010.33 focuses on V-belts within a specific circumference range (180-240 cm). It differs from 4010.31 and 4010.32, which cover V-belts with a smaller circumference (up to 180 cm). Additionally, while siblings like 4010.35 and 4010.36 classify endless *synchronous* belts, this category is exclusively for V-shaped belts.

Within 4010.33, further subdivision is provided to differentiate belts based on their construction. The subcategories, 4010.33.30.00 and 4010.33.60.00, distinguish between V-belts that are reinforced or combined with textile materials for added strength and durability, and those that are not so reinforced, respectively. This allows for a more precise classification based on the belt's composition.