Din 5480 Spline Dimensions Pdf Jun 2026
The curved root reduces stress concentrations, minimizing the risk of fatigue cracking.
depending on the specific fit clearance selected. For standard flat-root systems: da1=d1−0.2md sub a 1 end-sub equals d sub 1 minus 0.2 m df1=d1−2md sub f 1 end-sub equals d sub 1 minus 2 m Internal Spline (Hub / "N") Nominal Sizes: Major Diameter ( df2d sub f 2 end-sub ): df2=d1+2md sub f 2 end-sub equals d sub 1 plus 2 m Minor Diameter ( da2d sub a 2 end-sub ): da2=d1+0.2md sub a 2 end-sub equals d sub 1 plus 0.2 m 4. DIN 5480 Dimensions Table (Sample Data)
) are equal in standard profiles where no profile shift is applied). p=π×mp equals pi cross m Base Diameter ( ):
Typically designated with capital letters like 9H , 7H , or 6H . 9H is the most common commercial standard for broad manufacturing tolerances.
A typical DIN 5480 callout, such as , contains specific data points: Description W / N Shaft / Hub
A shaft requires an external spline DIN 5480 Z 85 x 3 x 28 x 9H.
What or module size you are trying to calculate?
The defines the geometry, dimensions, and gauging of involute splines with a 30° pressure angle . It is widely used in automotive and mechanical engineering for high-torque applications. Core Specifications of DIN 5480
Below is a reference data snippet representing common dimensions found in standard DIN 5480 calculation PDFs.
The reference diameter is the primary theoretical pitch circle. d=m×zd equals m cross z Base Diameter (
(Dimensions listed in millimeters for standard configurations) Designation Reference Pitch Dia ( Shaft Major ( da1d sub a 1 end-sub Shaft Minor ( df1d sub f 1 end-sub Hub Minor ( da2d sub a 2 end-sub Hub Major ( df2d sub f 2 end-sub N/W 35 × 2 × 16 N/W 50 × 2 × 24 N/W 80 × 3 × 25 N/W 100 × 4 × 24
DIN 5480 Spline Dimensions PDF: A Complete Engineering Guide
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Whether you are a mechanical designer, a CNC machinist, or a procurement specialist looking for a , understanding the geometric principles, calculation formulas, and dimensional tables of this standard is critical for ensuring component compatibility and preventing mechanical failure.
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DIN 5480 is a comprehensive standard for splined connections with involute splines. It is specifically designed for metric drive components, providing a standardized system for connecting hubs and shafts for torque transmission, location, and sliding or permanent fits. The standard covers a wide range of applications, from removable connections to precision sliding fits.
What is the exact or module size you are using? Are you designing the shaft or the hub component? Do you need the exact formulas for measurement over pins ?
