When downloading a verified technical datasheet, check the tolerance section. DIN 5480 uses a combination of numbers and letters to define fitment quality and backlash.
This is the core practical reference for engineers and machinists. It provides comprehensive tables of nominal dimensions for all standard spline sizes and, crucially, their corresponding inspection dimensions used for quality control.
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In heavy-duty mechanical design, involute splines are the gold standard for transmitting high torque while maintaining precise axial alignment. Among the various international standards, the German is widely regarded as the industry benchmark for metric involute splines with a 30° pressure angle. din 5480 spline dimensions pdf verified
If you're looking for a specific (e.g., to confirm the exact root diameter for 120x3x38x8f ), I can look up the specific row in the verified standard table . If you'd like, I can: Compare DIN 5480 with ANSI B92.1 splines.
DIN 5480 specifies tolerance classes that define the fit between the internal and external spline.
The most critical part of the standard for designers and engineers is . This is where you will find the verified tables of numbers that define a specific spline. When downloading a verified technical datasheet, check the
Understanding a spline designation is the first step to identifying the correct part. For example, the designation DIN 5480 W 8 x 0.8 x 30 x 8 x 7h breaks down as follows:
DIN 5480 is almost always , meaning the teeth transmit the torque and align the parts simultaneously.
A critical point: . For example, DIN 5480-2:1991-10 was superseded by DIN 5480-2:2006-05, and the 2006 edition is itself now a withdrawn standard, having been replaced by DIN 5480-2:2015-03. With new drafts appearing (e.g., DIN 5480-2:2025-01), the only way to know you have the most current, legally applicable document is to purchase the official, verified PDF from an authorized source. It provides comprehensive tables of nominal dimensions for
A typical designation looks like: . W / N : W is the Shaft ( Welle ), N is the Hub ( Nabe ). 120 : The Reference Diameter ( dBd sub cap B ) in mm. 3 : The Module ( ) (tooth size). 38 : The Number of Teeth ( ). 8f : The Tolerance Class (8) and Allowance (f) for the fit. 🧩 Choosing Your Fit
The standard applies to a wide range of splines, covering:
The DIN 5480 standard was revised and condensed from 16 separate parts into a more logical, four-part structure: Part 1: General, Part 2: Nominal and inspection dimensions, Part 15: Inspection, and Part 16: Tools .
Here is a sample verification page: