. Confident, they model the part and send it to the machine shop.
DIN 5480 is the German standard for . Unlike parallel-sided splines (often covered by DIN 5464), involute splines have teeth with an involute profile—similar to gears.
If you do not have a DIN 5480 dimensions PDF on hand, you can calculate the basic nominal geometry of any standard spline using these formulas: External Spline (Shaft) Internal Spline (Hub) Major Diameter Minor Diameter
DIN 5480 is a German standard published by the Deutsches Institut für Normung (German Institute for Standardization). It specifies the geometry, dimensions, tolerances, and gauging practices for . Key Characteristics of DIN 5480 Splines: 30° Pressure Angle: All standard profiles use a 30∘30 raised to the composed with power
For engineers and designers, having the official DIN 5480 PDF tables is essential. While the standard itself is proprietary, many technical suppliers provide summarized charts. din 5480 spline dimensions pdf
) : The largest internal diameter at the root of the hub teeth. Minor Diameter ( df2d sub f 2 end-sub
In this post, we break down everything you need to know about DIN 5480 spline dimensions and point you toward a reliable reference.
db=dd×cos(30∘)=m×z×0.866025d sub b equals d sub d cross cosine open paren 30 raised to the composed with power close paren equals m cross z cross 0.866025
A shaft requires an external spline DIN 5480 Z 85 x 3 x 28 x 9H. Unlike parallel-sided splines (often covered by DIN 5464),
Understanding the DIN 5480 standard is less about memorizing numbers and more about recognizing its unique design philosophy: the Reference Diameter d sub cap B
In mechanical engineering, transmitting high torque smoothly between rotating components requires robust connection mechanisms. Splined shafts and hubs are the industry standard for these demanding applications. Among the various global standards governing spline design, the German standard is one of the most widely adopted worldwide for involute splines.
Typically designated with capital letters (e.g., 9H , 7H ). The 9H class is the most common industry standard for general machinery.
Producing DIN 5480 splines requires specialized machinery to maintain the involute profile accuracy. Key Characteristics of DIN 5480 Splines: 30° Pressure
This table outlines standard configurations for common industrial modules. The exact tip and root diameters vary slightly based on the chosen fit class and tolerance. Standard Spline Configurations Standard Designation Reference Dia ( External Tip Dia ( da1d sub a 1 end-sub Internal Tip Dia ( da2d sub a 2 end-sub W 30 x 2 x 13 W 40 x 2 x 18 W 50 x 2 x 23 W 60 x 3 x 18 W 80 x 3 x 25 4. Fits and Tolerances Explained
These differ based on whether you are looking at the shaft (External) or the hub (Internal).
Define the peaks and valleys of the teeth. Common Standard Tables
: Excellent for decoding spline callouts and understanding basic geometry. eAssistant Manual