Law of Gearing, What is Gear Ratio, Pitch?

Question

Accepted Answer

The law of gearing explains the relationship between the size of gears and their speed and torque ratios.

Gear ratio is the ratio of the number of teeth on the driven gear to the number of teeth on the driving gear.
Pitch is the distance between corresponding points on adjacent teeth in a gear.
The law of gearing states that the ratio of the angular velocity of the driving gear to the angular velocity of the driven gear is equal to the ratio of the number of teeth on the driven gear to the number of teeth on the driving gear.

Accepted Answer

- Gear ratio: The ratio of teeth on the driven gear to teeth on the driving gear.
- Pitch: The distance between corresponding points on adjacent teeth.
- Law of gearing: The ratio of angular velocities (speed) of driving and driven gears equals the ratio of teeth on driven and driving gears.