Round belt pulleys are mechanical devices which transmit rotational motion around an axle. They are used to lift loads or to apply/transmit power.
The round belt pulley accommodates a belt, cable, or rope in a groove around the circumference of the device to guide the drive element. Round belt pulleys are very efficient (approx. 95%), they can produce a mechanical advantage, and they are recognized as one of the six simple machines.
Round Belt Pulley Operation
In many incarnations, a pulley transmission greatly resembles a roller chain drive. Most transmission applications utilize a belt to transmit energy between pulleys. A pulley transmission offers several advantages over roller chains drives. Not only can pulleys account for axial misalignment, but axles can be perpendicular or reside at any other angle. It's also common to employ a pulley transmission in a crossover drive to reverse the direction of the receiving pulley.
Round Belt Pulley Specifications
Pulley geometry is represented in metric and avoirdupois units, but there is no other structural or design difference between the types. Other considerations for integrating pulleys include:
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