DIN 5480 focuses on rather than pitch diameters. This shift allows for more standardized tooling and easier interchangeability between shafts and hubs. Pressure Angle: Always 30°. Centering: Primarily diameter centered or flank centered. Module (m): Range typically from 0.5 to 10. Fit Classes: Governed by DIN 5480-14 for tolerances. 📏 Key Dimension Parameters

This section provides the basic rack dimensions and formulas. You will not find specific shaft measurements here; instead, you get the math:

M_external = dref * cos(α) / cos(α_M) + dm