Quickness reducers are fairly simple pieces of machinery. A velocity reducer is merely a gear train between the engine and the gear speed reducer machinery that is utilized to reduce the speed with which power is usually transmitted. Acceleration reducers, also called gear reducers, are mechanical gadgets by and large utilized for two reasons. Gear reducers essential make use of is usually to duplicate the way of measuring torque produced by an details power resource to expand the measure of usable work.
Speed reducers primarily serve two functions. First, they take the torque produced by the power source (the insight) and multiply it. Second, quickness reducers, much as the name implies, reduce the rate of the input so that the output may be the correct speed.
How does a speed reducer raise the torque while decreasing the acceleration? The output gear of a velocity reducer has more tooth compared to the input gear. Therefore, while the output gear might rotate more slowly, reducing the speed of the input, the torque is increased.
So, last but not least, they take 
an input power source and increase the torque while decreasing the speed.
Speed reducers come in many sizes and shapes, but some of the most commonly found speed reducers are gearboxes.