In terms of structure, what is a distinct feature of V-belts?

A distinct feature of V-belts is their wedge shape, which is essential for their operation. This design allows the belt to fit snugly into the grooves of the pulleys it drives. The wedge shape increases the contact area between the belt and the pulley, which enhances friction and grip. This design not only improves power transmission efficiency but also minimizes slippage under load, making V-belts a popular choice in various mechanical applications, particularly where high tension and torque are required.

The shape of the V-belt helps to maintain proper positioning within the pulleys, contributing to the overall reliability and performance of the drive system. In contrast, other profiles such as flat edges or round profiles do not provide the same effectiveness in power transmission and are used for different applications.