. The number (8) represents the accuracy level (5 is tight, 12 is loose), and the letter (f) denotes the fit position, such as a slip fit. 2. Core Geometry Principles If you are looking at a technical drawing or a DIN 5480 Dimensions PDF , these core constants apply: Engineering.com Pressure Angle . If you see 37.5° or 45°, you are likely looking at : DIN 5480 is primarily flank-centered
| Parameter | External Spline (Shaft) | Internal Spline (Hub) | |-----------|------------------------|----------------------| | Reference diameter | 60.0 mm | 60.0 mm | | Tip diameter | 64.0 mm | 56.0 mm | | Root diameter | 55.0 mm | 65.0 mm | | Space width / Tooth thickness (max/min) | 3.1416 / 3.0916 mm | 3.1916 / 3.1416 mm | din 5480 spline dimensions pdf
The is the primary European reference for involute splines based on reference diameters, which are designed to simplify the assembly of mechanical components like ball or roller bearings. Unlike standards based on pitch diameters, DIN 5480 uses a reference diameter ( dBd sub cap B Core Geometry Principles If you are looking at
For complete dimensional tables, you can refer to the following technical guides: Because the reference diameter is fixed to standard
: This is the "secret sauce" of DIN 5480. Because the reference diameter is fixed to standard bearing sizes, engineers use profile shifts to adjust the tooth geometry to fit that diameter. 3. Common Calculations for Drawings
These differ based on whether you are looking at the shaft (External) or the hub (Internal).
💡 When downloading a PDF, ensure it specifies whether it covers the flat root or fillet root version, as this changes the root diameter and strength profile. AI responses may include mistakes. Learn more