Types of Sprockets and Their Uses (Pitch Diameter) :- A sprocket is referred to as a wheel which is found with teeth, cogs or even sprockets that are found having a mesh with the holes in the links of chain, track or other perforated material. A sprocket is considered to be different from a gear as the sprocket is found to never mesh directly with another sprocket. Sprockets are usually designed in order to be used along with a specific chain. Selecting the right sprocket is responsible for optimizing the sprocket or the chain interaction which ensures the proper performance of the drive and also decreases its maintenance at the same time.