Power transmissions use pulleys to transfer the power to different parts within a system. Belts channel through a groove in idler pulleys to transfer rotational power to a shaft or another pulley. Idler pulleys are used to transfer power within pumps, conveyor belts, and other industrial applications. Belts for idler pulleys vary to fit a particular type of groove in the pulley. Zoro supplies idler pulleys that accommodate V-belts, A-belts, B-belts and others. For more on power transmission pulleys, see our standard V belt pulleys, timing belt pulleys, and variable pitch V belt pulleys.