A sprocket[1] or sprocket-wheel[2] is a profiled wheel with tooth, or cogs,[3][4] that mesh with a chain, monitor or other perforated or indented material.[5][6] The name ‘sprocket’ applies generally to any wheel where radial projections engage a chain moving over it. It really is distinguished from a equipment in that sprockets are never meshed together directly, and differs from a pulley for the reason that sprockets have the teeth and pulleys are even.

Sprockets are found in bicycles, motorcycles, cars, tracked automobiles, and other machinery either to transmit rotary motion between two shafts where gears are unsuitable or to impart linear movement to a monitor, tape etc. Maybe the most common form of sprocket may be found in the bicycle, in which the pedal shaft carries a large sprocket-wheel, which drives a chain, which, subsequently, drives a small sprocket on the axle of the trunk wheel. Early automobiles had been also largely powered by sprocket and chain mechanism, a practice largely copied from bicycles.

Sprockets are of various designs, a maximum of efficiency becoming claimed for every by the originator. Sprockets typically do not have a flange. Some sprockets used in combination with timing belts have flanges to keep carefully the timing belt centered. Sprockets and chains are also used for power transmission from one shaft to another where slippage isn’t admissible, sprocket chains being used instead of belts or ropes and sprocket-wheels instead of pulleys. They may be run at high speed plus some kinds of chain are so constructed concerning be noiseless even at high speed.