Din 5480 Spline Dimensions Pdf

DIN 5480 spline — concise overview

What is DIN 5480?

DIN 5480 is a German standard (Deutsches Institut für Normung) titled "Involute splines based on reference diameters". Unlike older standards (such as ANSI B92.1 or DIN 5462/5463), DIN 5480 uses a unique modular system based on a reference diameter rather than a fixed pitch or diametral pitch.

Decoding the DIN 5480 Notation

Before diving into dimensions, you must understand the naming convention. A typical designation on a drawing looks like this:

DIN 5480 – W 30 x 2 x 16 x 9g

Here is what each segment means:

  • W: Indicates the external spline (Welle = Shaft). N is used for the internal spline (Nabe = Hub).
  • 30: The nominal diameter ($d_a$ for external, $d_f$ for internal) in millimeters.
  • 2: The module ($m$) in millimeters.
  • 16: The number of teeth ($z$).
  • 9g: The tolerance class (IT grade).

Overview

The DIN 5480 standard defines the dimensions and tolerances for involute splines used in mechanical engineering, particularly for serrated shaft-hub connections. Unlike older standards (e.g., DIN 5481, DIN 5482), DIN 5480 is based on a reference diameter rather than a nominal or root diameter, enabling modular design and better load distribution. din 5480 spline dimensions pdf

A DIN 5480 Spline Dimensions PDF provides engineers, machinists, and quality inspectors with instant access to critical data, including:

  • Module sizes (0.5 to 10 mm)
  • Number of teeth (typically 6 to 82)
  • Pitch diameters
  • Root and tip diameters (internal & external)
  • Space width and tooth thickness tolerances
  • Centering methods (side fit, major diameter fit)

Where to Find a Reliable DIN 5480 Spline Dimensions PDF

Instead of downloading risky files from unknown forums, here are the best options: DIN 5480 spline — concise overview What is DIN 5480

Key Contents of a Typical DIN 5480 PDF

| Section | Description | |---------|-------------| | Basic formulas | Calculation of reference diameter, module, and profile shift | | Tooth geometry tables | Standardized combinations of module, teeth count, and diameters | | Tolerance classes | Fit classes for precise or general applications | | Inspection data | Over pin/ball measurements, span measurements over teeth | | Material allowances | Heat treatment and finishing allowances |

Option 3: Interactive PDF Calculators (Software)

Several companies offer a free "DIN 5480 Calculator" that outputs a custom dimension PDF for your specific spline: DIN 5480 – W 30 x 2 x 16 x 9g

  • KISSsoft (trial version)
  • MITCalc – Spline calculation
  • Hexagon/PC-DMIS spline add-on

These tools generate a PDF report with your spline’s exact dimensions, eliminating the need to manually read large tables.

For Internal Spline:

  1. Major Diameter (D_a): (D_a = D + 2m).
  2. Minor Diameter (D_f): (D_f = D - 2.5m).
  3. Pitch Diameter (D): (D = zm).