Din 5482 Spline Dimensions Calculator Jun 2026

| Parameter | Symbol | Formula / Definition | | --- | --- | --- | | | 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. |

| Feature | Online Web Calculator | Offline Desktop Software | | :--- | :--- | :--- | | Accessibility | Any device, no install | Requires license | | Speed | Quick for 1–2 calcs | Batch processing | | Data security | User beware | Full control | | CAD integration | Rare (STL download possible) | Direct plugin to SolidWorks/Catia | | Typical cost | Free to $10/month | $150–$500 one-time | din 5482 spline dimensions calculator

Unlike some modern standards that use a fixed reference diameter, DIN 5482 specifies dimensions based on the nominal diameter | Parameter | Symbol | Formula / Definition

Ensures stress concentration is managed. | | Major diameter (external) | dₐ₁ |

DIN 5482 is a widely used German standard for involute splines

Let us walk through a practical scenario. Assume you have a shaft that requires a DIN 5482, module 0.5, 30° pressure angle, with 36 teeth. You open your and enter: