DIN 5480 specifies tolerance classes that define the fit between the internal and external spline.
This is the fingerprint of the involute. For DIN 5480 with a 30° pressure angle (α), the base pitch must equal π * m * cos(30°) . A verified PDF lists this for every module.
What (e.g., 9H, 7h) does your application require? din 5480 spline dimensions pdf verified
): Used to adjust the spline to the reference diameter. It typically ranges from for shafts.
If you are currently drafting a design or troubleshooting a fitment issue, let me know: What are your target and module ( ) requirements? DIN 5480 specifies tolerance classes that define the
Remember that "Effective" size includes errors in pitch and profile, whereas "Actual" is just the tooth thickness. If you'd like to calculate specific values , tell me: The Reference Diameter (e.g., 50mm) The Module (e.g., 2) Whether it is a Shaft or a Hub
"N" indicates a hub (internal spline); "W" indicates a shaft (external spline). 120: The nominal reference diameter ( ) in millimeters. 3: The module ( ), which dictates the tooth size. 38: The total number of teeth ( 9H: The tolerance class and position for the fit. 2. Core Dimensional Formulas A verified PDF lists this for every module
Letters and k introduce transition or interference fits, minimizing or completely eliminating rotational backlash for bidirectional or high-precision indexing machinery. Measurement Over Pins / Balls
In conclusion, the DIN 5480 spline dimensions are a critical aspect of designing and manufacturing splines for various applications. The standard provides a comprehensive set of rules and guidelines for ensuring proper fit and function of spline connections. By following the DIN 5480 standard, manufacturers can ensure interchangeability, provide a secure connection, and minimize wear and tear on the spline and mating shaft.
To properly interpret a DIN 5480 dimensions table, you must understand the standardized German-engineered nomenclature: