V-belts are the most widely used belt drives since their geometry causes them to wedge tightly into the groove as the tension is increased. As the belt wedges into the groove, friction between the surface of the belt is increased, allowing high torques to be transmitted. The increased friction minimizes the loss of power through slippage.
High power transmission capacity because V-grooves provide excellent grip. The functioning of the belt and the pulley is smooth and quiet. The V-belt drive provides compactness due to the small distance between the centers of the pulleys. Slip between the belt and the pulley is negligible.
A v-belt is a flexible machine element used that transmits power between a set of grooved pulleys or sheaves. They are characterized by their trapezium cross-section.
V-belts are used because of their ability to wedge tightly into the grooves of the pulley.
This breaks higher surface friction, reducing slip and power loss.
V-belts can be classified as wrapped or raw edge belts. Wrapped v-belts are fully covered with a fiber cover, while raw edge belts have bare flanks.
V-belts can also be categorized according to the cross-section. The most common cross-sections are standard, wedge, narrow, fractional horsepower, banded, cogged, and double.
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