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Indicates an External Spline (Shaft). Note: N indicates an Internal Spline (Hub). 120: The Reference Diameter ( ) in millimeters. 3: The Module ( ) . 38: The Number of Teeth ( ) .
DIN 5480 is distinct from other common spline standards and is with them:
❌ Assuming DIN 5480 is identical to ISO 4156. They are not interchangeable . ISO 4156 uses basic pitch diameter; DIN 5480 uses reference diameter. Gauges differ.
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DIN 5480 is a widely used standard for involute splines, which defines the dimensions, tolerances, and testing methods for these components. The standard specifies several quality classes, which differ in their dimensional tolerances and testing requirements. If you're looking for a PDF version of DIN 5480, you can try the resources listed above.
) which ensure the tips of the teeth do not interfere with the roots of the mating part.
: Ensuring the hub and shaft remain aligned under operational stress. Durability : Often manufactured from robust materials like Steel C45 (milled) to withstand heavy wear. 2. Technical Characteristics Indicates an External Spline (Shaft)
By following these recommendations and using the DIN 5480 standard as a guide, designers and manufacturers can create high-quality splined connections that meet the required standards and regulations.
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Offers specific formulas for addendum modification ( x.m ), which is necessary for high-load, high-precision applications. Where to Find DIN 5480 PDF Documentation 3: The Module ( )
Dimensions are calculated using metric modules ( ) rather than diametral pitch.
| Component | Value | Meaning | |-----------|-------|---------| | | W | External spline (Welle = shaft). Use "N" for internal (Nabe = hub). | | dref | 48 | Reference diameter = 48 mm | | Module | 2 | Module = 2 mm | | Tooth count (z) | 24 | 24 teeth (verifies: 48/2 = 24) | | Tolerance | 9H | Class 9H internal fit (typical for fixed splines) |
: Unlike many other standards (like ANSI B92.1) that use major or minor diameters, DIN 5480 uses a Reference Diameter (