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What is the difference between a gear and a sprocket? What applicances are the two used for? How is the design and materials different?
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A gear and a sprocket look similar, but are not. A gear connects directly to another gear. A sprocket connects to a chain, which connects to another sprocket. Gears can be used to turn a corner, based on the way they fit together. Sprockets only work in straight lines; they cannot turn corners. Sprockets are also used over longer distances; it is not feasible to have multiple gears in a line. It is much easier to have a chain span the distance.
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They are all toothed wheels. Gears are designed to mesh with other gears, and the geometry of the teeth is optimized for this purpose. Sprockets are designed to drive, or be driven by, a chain (such as in a bicycle) so its teeth are shaped for that purpose (pointier than gear teeth). A cog -- or more properly, a cogwheel -- as I understand the term, has squared-off teeth designed for a different kind of mechnaism...............R.SUNARRAJ B.E
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