Hollow Shaft Maximum Moment Formula

Equation for calculate hollow shaft maximum moment is,

T_max = ( π / 16) x τ_max x ((D⁴ - d⁴) / D)

Where,
T_max = Circular shaft Maximum Torque (Twisting Moment)
τ_max = Maximum Shear Stress
D = Shaft Outside Diameter
d = Shaft Inside Diameter