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Drive chain

When working out gear / velocity ratio and the rpm of chain driven gears it must be remembered that the chain is ignored. This means the you simply find out the teeth per gear wheel and the rpm and use the same method of calculating as you would with a normal, meshing gear system (see gear work sheets)

Chain drive is a way of transmitting mechanical power from one place to another. It is often used to convey power to the wheels of a vehicle, particularly bicycles and motorcycles. It is also used in a wide variety of machines besides vehicles.

Most often, the power is conveyed by a roller chain, known as the drive chain or transmission chain,[1] passing over a sprocket gear, with the teeth of the gear meshing with the holes in the links of the chain. The gear is turned, and this pulls the chain putting mechanical force into the system. Another type of drive chain is the Morse chain, invented by the Morse Chain Company of Ithaca, New York, USA. This has inverted teeth.

Sometimes the power is output by simply rotating the chain, which can be used to lift or drag objects. In other situations, a second gear is placed and the power is recovered by attaching shafts or hubs to this gear. Though drive chains are often simple oval loops, they can also go around corners by placing more than two gears along the chain; gears that do not put power into the system or transmit it out are generally known as idler-wheels. By varying the diameter of the input and output gears with respect to each other, the gear ratio can be altered, so that, for example, the pedals of a bicycle can spin all the way around more than once for every rotation of the gear that drives the wheels.

Zhejiang Gidi industrial chain co.,ltd locating at shaoxing city,Zhejiang province,is specialized in the production of various kinds of industrial chains, roller chain, conveyor chain, engineering chains,high tensile chains,sprockets and other power transmission components under ISO9001 and ISO14001 certification.

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