Pdf Verified — Din 5480 Spline Dimensions

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

For practical verification in a workshop, engineers use measurement over balls (or pins). A verified PDF provides the formula or constant values (M1 and M2) for calculating the measurement over 2 balls (internal) or 3 wires (external) according to DIN 5480-2. din 5480 spline dimensions pdf verified

DIN 5480 specifies tolerance classes that define the fit between the internal and external spline. This section provides the basic rack dimensions and formulas

This is the fingerprint of the involute. For DIN 5480 with a 30° pressure angle (α), the base pitch must equal π * m * cos(30°). A verified PDF lists this for every module. This is the fingerprint of the involute

Select a random line from a profile shift table. Compute the actual tooth thickness at reference diameter:

s = (π*m)/2 + 2*x*m*tan(α)

If the PDF’s value deviates >1%, assume a transcription error.

A standard PDF on dimensions is incomplete without the tolerance class system. DIN 5480 is unique in its approach to fit allocation: