The boundary dimensions differ depending on whether the part is a shaft or a hub, accounting for necessary clearance: Major Diameter ( da1d sub a 1 end-sub ): Nominal Diameter Minor Diameter ( df1d sub f 1 end-sub (Approximate clearance profile) Internal Spline (Hub): Minor Diameter ( da2d sub a 2 end-sub ): Nominal Diameter Major Diameter ( df2d sub f 2 end-sub 3. DIN 5480 Spline Dimension Reference Table
da1=m×z+(0.9×m)d sub a 1 end-sub equals m cross z plus open paren 0.9 cross m close paren : The root diameter of the external teeth.
Involute flanks, which optimize stress distribution and self-centering behavior under load.
Letters F–G are slip fits; H is the standard line-on-line fit. Verified Resources and Standards din 5480 spline dimensions pdf verified
DIN 5480 primarily utilizes flank centering , meaning the sides of the teeth transmit the load and align the shaft and hub. Standard Nomenclature and Designation
Examine your PDF. A verified document from Beuth will have:
When downloading or referencing a third-party DIN 5480 calculation sheet, always cross-verify the following variables to ensure data integrity: Confirm it is set exactly to 30°. The boundary dimensions differ depending on whether the
This is a technical white paper intended for engineers, machinists, and quality assurance professionals dealing with German standard gearing and splined connections.
7H/7e or 8H/8f (Good for precision and high-load torque). Clearance Fit: 9H/9e (Good for easy assembly).
You cannot legally get the full, dimensioned PDF for free, as it is a copyrighted publication. You must purchase it from an official distributor. Here are the primary options: Letters F–G are slip fits; H is 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.
Let’s verify what these numbers mean using the standard: