Involute Spline
Calculator
Select the spline size, accuracy grade and deviation series to get the DIN 5480 shaft and hub designations, geometry and inspection dimensions.
Accuracy grade Q
Deviation series
| Parameter | Symbol | Shaft | Hub |
|---|
| Parameter | Nominal | Actual | Effective | ||
|---|---|---|---|---|---|
| max | min | max | min | ||
Spline sizes, geometry and tolerances per DIN 5480 (30° pressure angle, flank-centred) for reference diameters 6 to 500 mm and modules 0.5 to 10.
Results are provided for guidance. Always confirm critical dimensions against the current standard and your drawing.
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Using DIN 5480 splines
Reading the designation
DIN 5480 – W 88 × 4 × 20 × 9e is a shaft (W) with reference diameter 88 mm, module 4 and 20 teeth, accuracy grade 9 and deviation series e. N marks the hub.
Grade and series
The accuracy grade sets the size of the tooth thickness and space width tolerance. The deviation series sets where that tolerance sits, and so how much backlash the fit has.
Actual and effective
Actual limits are what you measure on a single tooth or space. Effective limits include the pitch, profile and lead errors, so they decide whether shaft and hub assemble. Check effective with a gauge.