Simple definition of gear (Spur and Helical Gear)
A gear is defined as a wheel with teeth
cut on its rim(Blank). Gear acts and operate in pairs . engaging or meshing teeth of
each other , in a pair one acts as a driver and other acts as a follower .
Gears
are used when the distance between driving shafts and driven shafts is very
small . it is possible to drive shafts that are parallel intersecting, or neither intersecting .many
different type of gears are used and their selection depends on many factors ,
such as the relative position of the two shafts , the power to be transmitted ,
in running condition.
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