Din 5480 Spline Calculator Excel New Review

DIN 5480 uses ball diameter Dp ≈ 1.8 × m (for 30° PA).
Formula for over-pin measurement for external spline:

For simplicity, many calculators use span measurement over teeth (Mdk) per DIN 5480-1 tables. din 5480 spline calculator excel new


Add lookup tables for:

Use VLOOKUP with fit class and module range. DIN 5480 uses ball diameter Dp ≈ 1


Function SuggestBallDiameter(m As Double) As Double
    SuggestBallDiameter = m * 1.728 ' DIN 5480 recommendation
End Function

Open any legacy DIN 5480 spreadsheet found on obscure forums. What do you see? For simplicity, many calculators use span measurement over

A new DIN 5480 spline calculator must solve these legacy problems.