A planetary gearbox sprocket is a wheel with teeth, cogs, or even sprockets that mesh with the holes in the links of chain, track, or other perforated materials. A sprocket differs from a gear because a sprocket by no means meshes directly with another sprocket. Sprockets are designed to be utilized with a particular chain. Deciding on the best sprocket optimizes sprocket/chain conversation, ensures drive efficiency, and decreases maintenance.