| Parameter | Symbol | Description | Verification Checkpoint | | :--- | :--- | :--- | :--- | | | m | Basic tooth size (mm) | Must match standard series (e.g., 0.5, 0.6, 0.8, 1, 1.25, 1.5, 2...10) | | Reference Diameter | d(_B) | Ideal calculation diameter | Equals m * z (rounded to preferred numbers) | | Tip Diameter (Shaft) | d(_a) | Outer diameter of external spline | Verify against table for given module/z | | Root Diameter (Shaft) | d(_f) | Base of teeth | Critical for stress analysis | | Form Diameter | d(_Ff) | Start of involute profile | Must be below start of active profile | | Space Width (Internal) | e | Width of groove in hub | Tolerance dependent on class (e.g., 8f, 9H) | | Tooth Thickness (External) | s | Width of tooth on shaft | Measured over pins or via gear measurement | The Challenge: Finding a Free Verified DIN 5480 PDF Here is the reality check most online articles avoid: You cannot legally get a fully verified, complete DIN 5480 standard for free. The 2006 version (DIN 5480-1, 5480-2, 5480-15) is copyrighted by DIN Deutsches Institut für Normung e.V. and distributed by Beuth Verlag.
In the world of precision mechanical engineering, the interface between a shaft and a hub is critical. When it comes to transmitting high torque while allowing for sliding or fixed connections, involute splines are the gold standard. Among the most widely adopted standards globally is DIN 5480 . din 5480 spline dimensions pdf verified
A verified PDF will only contain modules from the R10 or R20 series. If your PDF lists m = 2.3 mm, it is fraudulent. Standard modules: 0.5, 0.6, 0.8, 1, 1.25, 1.5, 2, 2.5, 3, 4, 5, 6, 8, 10. Key Dimensional Tables (Verified Reference Data) While we cannot print the entire 150-page standard here, the following verified reference data is extracted from the core tables of DIN 5480-2 (2006). Use this to validate any "DIN 5480 spline dimensions pdf" you encounter. Table 1: External Spline (Shaft) Dimensions – Module 2 (Verified) | z (Teeth) | d(_B) (Ref Dia) | d(_a) (Tip Dia) | d(_f) (Root Dia) | Form Dia d(_Ff) | | :--- | :--- | :--- | :--- | :--- | | 20 | 40.0 mm | 42.0 mm | 37.0 mm | 38.5 mm | | 24 | 48.0 mm | 50.4 mm | 44.4 mm | 46.2 mm | | 28 | 56.0 mm | 58.8 mm | 52.8 mm | 54.6 mm | | 32 | 64.0 mm | 67.4 mm | 60.2 mm | 62.8 mm | | Parameter | Symbol | Description | Verification
However, for engineers, machinists, and quality control specialists, a recurring challenge is locating a containing accurate DIN 5480 spline dimensions . The internet is flooded with scanned copies from the 1980s, incomplete tables, or outright erroneous data. This article serves as your definitive resource. We will not only explain the structure of DIN 5480 but also guide you on how to source a verified dimensional chart and cross-check its authenticity. Why “Verified” Matters for DIN 5480 Spline Dimensions Before diving into tables, let’s address the elephant in the workshop: verification . In the world of precision mechanical engineering, the
Formula: d(_B) = m × z Example: m=2, z=24 → d(_B) = 48.0 mm. If your PDF says 47.8 mm, it is wrong.
For DIN 5480, the pitch diameter equals the reference diameter. Verify that d = d(_B).