Circular Pitches and Equivalent Diametral Pitches Table. Resources:

The following charts convert gear pitch dimensional data to the following: Diametral Pitch, Module, Circular Pitch Module: is the unit of size that indicates how big or small a gear is. It is the ratio of the reference diameter of the gear divided by the number of teeth. Module = (Reference Diameter) / (Number of Teeth) m = d / z

2024年6月25日 · Diametral pitch is commonly used in imperial gear design to determine the number of teeth on any given sized gear. It’s also used in assessing gear strength and load capacity.

Gears that use diametral pitch (DP) as a unit tooth size are called imperial gears or inch gears. The diametral pitch (DP) is obtained by dividing the number of teeth (z) by the pitch circle diameter (d, in inches).

DP stands for Diametral Pitch. By ISO standards, the unit Millimeter (mm) is designated to express length, however, the unit inch is used in the USA, the UK and other countries; Diametral Pitch is also used in these countries.

Diametral Pitch is the Number of Teeth to each Inch of the Pitch Diameter. ... Please note: the above formulae relates to standard outside diameters and pitch diameters.

2019年3月21日 · Diametral pitch: The number of teeth per inch of pitch diameter. Fillet: The small radius that connects the tooth profile to the root circle. Module: Teeth per millimeter of pitch diameter. Outside diameter: The major diameter of the gear. Pinion: The smaller-sized gear in …

Diametral Pitch is the number of teeth to each inch of the pitch diameter. Note: Rules and formulas relating to tooth depth and outside diameter apply to full-depth, equal addendum gears.

For example, the pitch diameter of a gear having, say, 20 teeth of 4 diametral pitch, will be 5 inches; 21 teeth, 5 1⁄4 inches; and so on, the increase in diameter for each additional tooth being equal to 1⁄4 inch for 4 diametral pitch.

When using the above formula make sure to use the proper speed (RPM) with the proper pitch diameter. I. To determine the pitch diameters of a gear set, we must find two basic things: