The diametral pitch is a ratio of the number of teeth to a unit length of pitch diameter.

Question

Quizplus · Accepted Answer

The diametral pitch (DP) is defined as the ratio of the number of teeth to the pitch diameter of a gear. It is expressed as teeth per inch (TPI) in the US or teeth per millimeter (TPM) in other countries. Therefore, the statement "the diametral pitch is a ratio of the number of teeth to a unit length of pitch diameter" is true.

The Diametral Pitch Is a Ratio of the Number of Teeth