gear reduction motor
Gear “reduction” particularly refers to the acceleration of the rotary machine; the rotational velocity of the rotary machine is usually “decreased” by dividing it by a equipment ratio higher than 1:1. A gear ratio greater than 1:1 is usually achieved when a smaller gear (reduced size) with fewer number of teeth meshes and drives a larger gear with greater quantity of teeth.
Gear reduction has the opposite effect on torque. The rotary machine’s output torque is increased by multiplying the torque by the gear ratio, less some efficiency losses.
While in lots of applications gear reduction reduces speed and improves torque, in various other applications gear reduction is used to increase acceleration and reduce torque. Generators in wind turbines use gear reduction in this manner to convert a comparatively slow turbine blade velocity to a high speed capable of generating electricity.