A speed reducer is generally used to reduce the speed of an electric motor. Internal combustion engine or other high-speed power through the reducer’s input shaft of the number of teeth on the gear meshing output shaft of the large gear to achieve the purpose of deceleration, reducer is a low-speed transmission equipment for high torque, this is a matter of common sense, do not talk about it, the ordinary speed reducer will have a few pairs of the same principle of gears to achieve the desired effect of deceleration, the size of the gear teeth ratio is the ratio of the transmission.
Calculation of Gear Ratio
For a pair of meshed gears, the gear ratio can be calculated using the formula:
Or more generally
For example, if a speed reducer’s input shaft rotates at 1000 RPM and the output shaft rotates at 100 RPM, the gear ratio would be:
This means the input shaft rotates 10 times faster than the output shaft, while the output shaft provides 10 times the torque of the input shaft (assuming no energy loss).
In short, this ratio is one of the important parameters of the reducer, usually we say 10 to 1, 20 to one, or direct example, 20 1 right angle speed reducer refers to the ratio of 20:1 right angle reducer.
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