While V-belts are most common, there are a couple of alternative belts that could be considered.
Run cooler, last longer, and can improve efficiency by about 2% over standard V-belts.
Slots, running perpendicular to the belt’s length, reduce the belt’s bending resistance and can be used with the same sheaves as equivalently
Offer better efficiency of up to 98%, while maintaining efficiency over a wide load range. (V-belts can have a sharp reduction in efficiency
at high torque due to slippage.)
Require less maintenance and re-tensioning.
Operate well in wet or oily environments and run slip free.
Are in many cases the most efficient belt choice.
Can have immediate energy savings.
Note: Synchronous belts are toothed and do require installation of mating toothed-drive sprockets. Synchronous belts are noisy and may transfer vibrations. Care must also be used if synchronous belts are being considered for centrifugal fans. It is necessary to select the proper synchronous belt sprockets that account for absence of slippage; if not, operating costs could actually increase.