chain and sprocket

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

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

Sprockets are of various designs, no more than efficiency becoming claimed for every by the originator. Sprockets typically do not have a flange. Some sprockets used with timing belts have flanges to keep carefully the timing belt centered. Sprockets and chains are also used for power transmission in one shaft to some other where slippage is not admissible, sprocket chains becoming used instead of belts or ropes and sprocket-wheels rather than pulleys. They may be operate at high speed plus some kinds of chain are so built as to be noiseless actually at high speed.

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