Differential Gearbox
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A differential, featuring three shafts in a gear train setup, exhibits the characteristic that one shaft's angular velocity equals the average of others or is a multiple thereof. In automobile and wheeled vehicle applications, this mechanism allows the outer driving wheel to rotate faster than the inner during turns, as it covers more distance. The rotational speed average of both driving wheels corresponds to the input rotational speed of the drive shaft; an increase in one wheel's speed is balanced by a decrease in the other. This system operates via a carrier that supports planetary bevel gears engaging driven bevel gears on axles.
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