Shaft Stress Concentration Calculator
Large diameter, (mm) D =
Small diameter, (mm) d =
Axial load (N) =
Major shaft diameter (mm) =
Transition radius (mm) =
Stress concentration factor fillet shaft, Kt =
Stress concentration factor undercut shaft, Kt =
Shaft length (mm) =
Shaft modulus, E (GPa) =
Area at fillet shaft diameter (mm2) =
Area at fillet shaft diameter (mm2) =
Fillet design stress, sigma (MPa) =
Undercut design stress, sigma (MPa) =
Shaft deflection along minor diameter (μm) =
Case A: Radius Between Diameters
radius r (mm) Kt Stress (Mpa) s/F
Case C: Hole in the Middle of Diameter  
Hole d (mm) Kt Stress (Mpa) s/F
Case B: Radius Undercut Between Diameters
Shaft min d Kt Stress (Mpa) s/F
Case D: Slot located at Center, where corner radius is r, width is b=D/4, and depth is t=D/8
radius r (mm) (Fixed Value) Kt Stress (Mpa) s/F
1.0000
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