What this calculator does
The calculator combines nominal stresses in a solid circular section into an equivalent stress. It supports an initial packaging estimate, for example for a drive shaft between a gear and coupling.
Shafts · static pre-design
Shaft diameter from bending and torsion
Estimate the required smooth solid-shaft diameter from simultaneous static bending and torque, yield strength, and required safety.
DIN743
02
Results
ƒ(x)
Set the inputs and run the calculation.
What still needs checking
Notches, keyways, shoulders, surface condition, size effects, and fluctuating loads can materially increase the required diameter. Follow with a complete DIN 743 verification.