Module, DP and CP for Spur Gear Hobs

In most English-speaking countries, diametral pitch and circular pitch are used instead of the module. 

lt is best to convert the above values into module and to proceed with the calculated module in the usual way.

The equations for the conversion into module are: 

m = 25.4 / DP

m = 25.4 · CP / 3.1416

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