V-Belt pulleys are generally manufactured from steel, or a fine grain cast iron. Steel pulleys are generally used for smaller V-belt sizes, while cast iron is used for larger diameters or multiple V-belt drives and offers a small flywheel effect on larger sizes. It should also be mentioned that the same pulleys can be used for both Wedge and Classical V belts.
Belts are the cheapest utility for power transmission between shafts that may not be axially aligned. Mechanical power transmission is achieved by specially designed belts and pulleys.
The demands on a belt-drive transmission system are large, and this has led to many variations of belts. They run smoothly, with little noise and cushion the motor and bearings against load changes, albeit with less strength than gears or chains.
However, improvements in belt engineering allow the use of belts in systems that only formerly allowed chains or gears.
Challenge ‘V’ and Wedge belts are manufactured to ensure precise length and to stay matched during storage and on the drive for many years. This also ensures that each belt, when correctly tensioned, will take the correct share of the load to be transmitted, thus helping to achieve maximum life for the drive.