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The conversion formula of gear number, modulus and maximum outer diameter is redrawn! ~~~
Diameter of dividing circle d=ZM (number of teeth × modulus)

Tooth crest height h=h*M (standard gear tooth crest height coefficient h*= 1)

Diameter of tooth tip circle D=d+2h

Substitution formula:

Maximum outside diameter D= 13×4 (calculate the dividing circle first) +2×4.

= 60 mm

Center distance between two wheels = sum of diameters of two-wheel indexing circles /2