What is the ratio of leadscrew gear?

The ratio of a leadscrew gear, often referred to as the leadscrew's gear ratio, is the relationship between the number of turns of the driving gear (input) and the corresponding movement of the leadscrew (output). It is calculated by dividing the number of teeth on the driving gear by the number of threads on the leadscrew. This ratio determines the mechanical advantage and the speed of the leadscrew's linear motion relative to the rotational input. A higher gear ratio typically results in slower linear movement but greater torque.