Gear Ratio

Gear ratio, abbreviated as GR, is the number of teeth of the larger gear to the smaller gear.

 

Gear Ratio formula
\(\large{ GR = \frac{n_g}{n_p} }\)
Symbol	English	Metric
\(\large{ GR }\) = gear ratio	\(\large{dimensionless}\)
\(\large{ n_g }\) = number of teeth on the gear	\(\large{dimensionless}\)
\(\large{ n_p }\) = number of teeth on the pinion	\(\large{dimensionless}\)