Din 71550

For those requiring the original documentation for historical reference or legacy maintenance, digital copies are available through specialized providers like or DIN Media . DIN 71550 - 1979-07

Rough surfaces get flattened during pressing, reducing effective interference. DIN 71550 implicitly requires:

Precise measurements for the bead's height and profile based on the pipe's outer diameter. Din 71550

Covers spring band clamps used to secure these hose-to-spigot connections.

The DIN 71550 standard is widely applied in various industries, including: Covers spring band clamps used to secure these

The standard provided comprehensive tables and drawings for pipe connection beads. Key technical data included:

| Standard | Focus | Main Difference | |----------|-------|------------------| | | Press fits for cylindrical parts | Specific, detailed tables for interference fits only | | ISO 286 | General tolerances | Covers clearance, transition, and interference – less prescriptive for press fits | | ANSI B4.1 | US standard for fits | Uses RC, LC, LT, LN, FN classes; less detailed interference ranges | | DIN 7155 (obsolete) | Press fits with keys | Replaced; DIN 71550 is for plain (keyless) fits | | JIS B0401 | Japanese standard | Similar to ISO 286; rarely specifies press fit strength directly | Using the standard’s tables, an engineer finds the

It is more conservative and precise for high-reliability German and European engineering (e.g., automotive, machine tools, wind turbines).

Using the standard’s tables, an engineer finds the upper and lower deviations, e.g., -7 µm and -20 µm. Thus, the shaft must be machined to between and 24.993 mm .

It is frequently cited alongside other active standards like for cooling system dimensions and materials.