Calculation of the tightening torque of bolts in installation condition (ZIEH)

Extract of the VDI guideline 2230 / DIN 2505 yellow print

ZIEH module

The tightening torque for rigid or expansion bolts is calculated on the basis of the required bolt force in the installation state, which can be calculated from AD leaflet B7 or DIN 2505, as well as the bolt geometry and friction coefficients.

The tightening torque calculated in this module is the sum of the head friction torque and the thread friction torque.

Literature

• Dubbel: “Taschenbuch für den Maschinenbau”, 16. edition, Springer-Verlag

see also:

• AD 2000 B7

• Calculation of valve bodies according to DIN EN 12516-2

• Module package 1591

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