You can find comprehensive tables and technical details in these verified documents:
Whether you are designing a high-torque drivetrain, sourcing a replacement shaft, or searching for a verified , this comprehensive guide breaks down the core geometry, calculation formulas, and standard modules you need to know. What is the DIN 5480 Standard?
Denoted by lowercase letters (e.g., 8g , 8f , 7h ).
(Profile Shift Factor): The intentional shift applied to the cutting tool to achieve specific clearance, strength, or backlash characteristics. DIN 5480 Spline Dimension Formula Architecture
Scroll to the bottom of the PDF. Does it include the Tabelle 1 for fundamental deviations (A, B, C, D, E, F, G, H, J, K)? If not, you cannot assign a fit class.
An example designation looks like this: Breaking down the nomenclature: DIN 5480: The governing standard.
A typical DIN 5480 designation, such as DIN 5480 – W 120 x 3 x 38 x 8f , provides a complete dimensional profile: : Denotes a Shaft ( Welle ) or Hub ( Nabe ). 120 : The reference diameter in millimeters. 3 : The module ( ), indicating the tooth size. 38 : The number of teeth (
) that is independent of the module. This design allows splines to easily accommodate standard ball and roller bearing diameters by using profile shifts. : Standardized at 30∘30 raised to the composed with power Module ( ) : Ranges typically from
High-torque applications often require hardened steel to handle the stress concentrations inherent in spline transmissions. Conclusion
If a free PDF lists "d_a" (tip diameter) as exactly m * (z+2) , delete it . That is a standard gear formula, not DIN 5480. DIN 5480 uses a specific profile shift coefficient to reduce the tip diameter.
Unlike imperial splines categorized by pitch fraction (e.g., 8/16 pitch), DIN 5480 dimensions depend directly on the metric and Number of Teeth ( ) . The fundamental reference equations include:
DIN 5480 Spline Dimensions: The Definitive Engineering Reference Guide
Identifies if it’s an external (W) or internal (N) spline. 120: Reference Diameter ( ) in millimeters. 3: Module ( 38: Number of Teeth ( 8f: Tolerance Class (specifies fit accuracy). Verified DIN 5480 Spline Dimensions
A "verified" PDF must include tolerance tables. DIN 5480 uses tolerance classes (e.g., 5H for internal splines, 4f for external). The PDF must verify the deviation in microns for:
) that align perfectly with standard ball and roller bearing sizes.
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