The most common method for external splines using a specialized 30° involute spline hob.
standard defines the dimensions and tolerances for involute splines based on a reference diameter. Unlike many other spline standards that rely on major or minor diameters, DIN 5480 uses the reference diameter ( as the primary basis for its calculations. d2t1xqejof9utc.cloudfront.net Core Technical Specifications
The 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
The cornerstone of DIN 5480 is the . This diameter remains constant for all splines with the same nominal size, regardless of the module chosen. Its primary purpose is to allow the shaft and hub to be fitted optimally to standard bearing seat diameters. This feature drastically reduces the number of different tools (like hobs and broaches) needed for manufacturing, leading to significant cost savings and increased design flexibility.
These differ based on whether you are looking at the shaft (External) or the hub (Internal). The most common method for external splines using
A typical DIN 5480 callout, such as , contains specific data points: Description W / N Shaft / Hub
Class and 8 are industry standards for automotive and general machinery. Fundamental Deviations (Position Letters) d2t1xqejof9utc
DIN 5480 utilizes the standard ISO tolerance system (letters and numbers) to define the fit between the shaft and the hub.
For a given module, the reference diameter determines the number of teeth. Example for :