A gear is a rotating circular machine part that has cut teeth or a case. This case of cogwheel or gearwheel has an inserted tooth with mesh with another toothed part to transmit torque. It is also called a cog. Gears are devices that help in changing the speed, torque and direction of a power source. Gears were initially invented in the third century BC by great Archimedes, with widespread use in the Roman world.
It depends on the design and construction of the gear pair employed. Gears can change the direction of movement and increase the output speed or torque. Applications of gears
There are many applications associated with gears, and these include:
Factory automation Packaging machine Industrial robots Food processing machine Car production machine Machine tool industry Material handling Printing material
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