Classical V belt pulley design to transmit mechanical power between rotating shaft using A, B, C, D, E belts.
It converts rotational motion from a driving shaft to a driven shaft to get a variable speed from driving elements there are different pitch diameter pulleys are used.
The centre hole of pulley fits on to shaft. Tightening set screws against the axle is common pulley mounting method. Key in keyways slots for to transmit torque between two elements.
The flexible nature of the belts allows the pulley system to absorb shock loads and reduce noice during operation.
The constructed material for pulley is typically cast iron for durability and cost effective, steel material for get higher strength and aluminium for light weight and corrosion resistance.