This section provides the basic rack dimensions and formulas. You will not find specific shaft measurements here; instead, you get the math:
The defines the principles for splined connections with involute flanks based on reference diameters. Revised in 2006, the current standard consolidates sixteen previous parts into four core sections to simplify technical specifications. Core Principles of DIN 5480
DIN 5480 focuses on rather than pitch diameters. This shift allows for more standardized tooling and easier interchangeability between shafts and hubs. Pressure Angle: Always 30°. Centering: Primarily diameter centered or flank centered. Module (m): Range typically from 0.5 to 10. Fit Classes: Governed by DIN 5480-14 for tolerances. 📏 Key Dimension Parameters din 5480 spline dimensions pdf verified
The defining features of the DIN 5480 series are as follows:
The DIN 5480 standard is the definitive German Industrial Standard for . Unlike the ISO 14 standard which covers straight-sided splines, DIN 5480 utilizes an involute tooth form (similar to gears) which provides superior centering, high load capacity, and ease of measurement. This section provides the basic rack dimensions and formulas
A genuine DIN 5480 dimensions PDF will always include these key parameters:
Here is a breakdown of the content, based on the official tables: Core Principles of DIN 5480 DIN 5480 focuses
: Denotes an external shaft spline ( N for Nabe/Hub). 120 : Reference diameter in millimetres. 3 : Module (tooth size). 38 : Total number of teeth. 8f : Tolerance class (8) and deviation series (f). Verified PDF Resources
This is the most frequently corrupted value in PDFs. The formula from the standard:
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.
Having the PDF is the first step; the second is applying its inspection criteria. DIN 5480 is a flank-centering system, meaning the fit is primarily determined by the thickness of the teeth on the shaft and the width of the spaces on the hub. A modern quality system employs a "virtual gauge" to validate an entire spline's geometry, making the digital evaluation of the "actual effective tooth thickness/space width" a precise and efficient process.