: Provides detailed breakdowns of the module ranges and tooth configurations. USA Roller Chain
If you'd like to narrow down these specifications, let me know: What specific or Module ( ) are you planning to use?
Represents an External Spline (Shaft). Note: N represents an Internal Spline (Hub). 120: The Reference Diameter ( 3: The Module ( 38: The Number of Teeth (
By understanding the structure of the standard, you can transform any DIN 5480 PDF from a confusing grid of numbers into a powerful engineering tool for precision spline design. din 5480 spline dimensions pdf
Because the full PDF is copyrighted, several German engineering universities and tool manufacturers publish condensed dimension tables legally. Search for:
) that aligns with surrounding components like bearings or oil seals. Choose an appropriate Module (
: The Reference Diameter . This is not the major or minor diameter, but rather the diameter that directly correlates with the matching bearing size. 3 : The Module ( ). This determines the actual size of the spline teeth. 38 : The Number of Teeth ( ). : Provides detailed breakdowns of the module ranges
pressure angle and profile displacement (shifting the teeth), the actual tip diameter of the shaft is modified to prevent interference with standard bearings. 🔍 How to Decode a DIN 5480 Callout
Apply tolerances. The PDF will have a secondary table for tolerance classes (e.g., 7H, 8g, 9H). For mass production, you use the lower tolerance (e.g., 8f for external splines with clearance).
In the world of mechanical engineering, connecting a shaft to a hub requires precision, strength, and reliability. While keyed connections are common, they often fall short when dealing with high torque or dynamic loads. Enter the involute spline—a robust solution standardized under . Note: N represents an Internal Spline (Hub)
Designated with lowercase letters (e.g., 7h , 8g , 8f ). An f or g tolerance produces a loose, free-sliding fit.
Involute splines are critical mechanical components used to transmit high torque between shafts and gears. Among the various international standards, the German standard is widely recognized as the industry benchmark for metric involute splines with a 30° pressure angle.
Standard tolerance classes include 8f (for shafts) and 9H (for hubs).
If you do not have a DIN 5480 dimensions PDF on hand, you can calculate the basic nominal geometry of any standard spline using these formulas: External Spline (Shaft) Internal Spline (Hub) Major Diameter Minor Diameter
The reference diameter allows for standardization with ball and roller bearings.