Standards, methods and tolerances for spline shafts
Involute splines (DIN 5480, SAE J498): pressure angle 30 deg, 37.5 deg, 45 deg. Straight-sided splines (DIN 5463/5464/5471): easier to measure, used in ag/construction.
| Method | Tolerance | Best For |
|---|---|---|
| Hobbing | +-0.025mm | Long shafts, medium volume |
| Broaching | +-0.01mm | Internal splines, through holes |
| Rolling | +-0.05mm | High volume, cold forming |