db=d×cos(30∘)=z×m×0.866025d sub b equals d cross cosine open paren 30 raised to the composed with power close paren equals z cross m cross 0.866025 Major and Minor Diameters
For production environments, utilize full-form spline plug and ring gauges. If a "Go" gauge inserts freely and the "No-Go" gauge binds, the splined geometry functions correctly within standard specifications. din 5480 spline dimensions pdf verified
DIN 5480 Spline Dimensions: The Definitive Engineering Guide db=d×cos(30∘)=z×m×0
The following reference table presents verified nominal dimensions for common DIN 5480 configurations. These dimensions form the baseline profile before tolerance classes (such as 9g or 8H) are applied. Reference Size Designation Number of Teeth ( Shaft Major Dia ( da1d sub a 1 Shaft Minor Dia ( df1d sub f 1 Hub Minor Dia ( da2d sub a 2 Hub Major Dia ( df2d sub f 2 W 25 x 1.25 x 18 W 30 x 2 x 13 W 40 x 2 x 18 W 50 x 2 x 23 W 60 x 3 x 18 W 80 x 3 x 25 W 100 x 4 x 23 5. Fit Classes, Tolerances, and Backlash These dimensions form the baseline profile before tolerance