Rough calculation for bolted joints according to VDI 2230 Part 1 (2003-02)

The minimum bolt diameter is roughly determined according to the guideline VDI 2230 Part 1. The minimum and maximum preload as well as the minimum bolt diameter can be estimated by the input of the maximum axial load and/or transverse load. In addition, the friction coefficients at the interface are considered for the dimensioning of the transverse load. The calculation takes into account three strength grades: 8.8, 10.9 and 12.9. A listbox for the load introductions provides the following selection options:

• Static and concentric axial load
• Dynamic and concentric axial load
• Static and eccentric axial load
• Dynamic and eccentric axial load

The following tightening techniques are available:

• Simple tightening spindle
• Torque wrench / precision spindle
• Angle-controlled tightening