To identify or design a DIN 5480 spline, engineers focus on three primary geometric areas: Diameters:
Critical for quality control, these measurements are taken over or between pins (or balls) to verify the actual size of the spline. Understanding the DIN 5480 Callout A standard designation usually looks like DIN 5480 – W . Each part of this string provides a specific dimension: Indicates whether it is a Shaft ( elle) or Hub ( Reference Diameter (not necessarily the physical outer edge). (size of the teeth). Number of Teeth Tolerance Class , which determines the fit (e.g., tight or loose). din 5480 spline dimensions pdf
DIN 5480 standard defines involute splines based on reference diameters ( d sub cap B ) that are independent of the module ( ). It is strictly limited to splines with a 30 raised to the composed with power pressure angle Doppler Gear Key Dimensioning Parameters When reading a DIN 5480 specification (e.g., DIN 5480 W 120 x 3 x 38 x 8f ), the dimensions are broken down as follows: : Indicates the type of spline. stands for "Welle" (Shaft/External) and stands for "Nabe" (Hub/Internal). Reference Diameter ( d sub cap B : The first number (e.g., : The second number (e.g., ), which determines the tooth size. Number of Teeth ( : The third number (e.g., Tolerance Class : The final alphanumeric code (e.g., Reference PDFs and Technical Resources To identify or design a DIN 5480 spline,
: The Class of Fit . The number indicates the tolerance quality (tighter tolerances use lower numbers). The letter represents the positional deviation. In this specific case, 8f is a classic sliding/slip fit. 📐 Critical Dimension Formulas (size of the teeth)
Let’s decode that:
You can use these dimensions to design and manufacture splines according to the DIN 5480 standard.