DIN 5482 is a widely used German standard for involute splines
Best For: Machinists, mechanics, and hobbyists who simply need to identify a standard hub or shaft size quickly. ⚖️ Summary Verdict din 5482 spline dimensions calculator
| Parameter | Symbol | Formula / Definition | | --- | --- | --- | | Tooth thickness (actual) | s | On the pitch diameter. Varies by fit class. | | Space width | e | On the internal spline. | | Major diameter (external) | dₐ₁ | Outer diameter of the shaft spline. | | Minor diameter (external) | d𝒻₁ | Root diameter of the shaft spline. | | Major diameter (internal) | dₐ₂ | Root diameter of the hub spline. | | Minor diameter (internal) | d𝒻₂ | Inner diameter of the hub spline. | | Fillet radius | r | At tooth root (external) or corner (internal). | | Measurement over pins | Mₒₑ / Mᵣₑ | Practical gauge dimension for manufacturing inspection. | | Tolerance classes | d₁, d₂, etc. | Upper and lower deviations per DIN 5482. | DIN 5482 is a widely used German standard
DIN 5482 specifies involute splines with 30° pressure angle and flat root geometry, primarily used for automotive, hydraulic, and machine tool connections. Unlike DIN 5480 (30°–37.5° PA), DIN 5482 uses module series and distinguishes between light, medium, and heavy duty fits. Light series: Tip diam ≈ 33