Moment of inertia of Shaft is a measure of the shaft’s resistance to torsional deformation, which affects the vibration characteristics of the system. And is denoted by Is. Moment of inertia of Shaft is usually measured using the Kilogram Square Meter for Moment of Inertia. Note that the value of Moment of inertia of Shaft is always positive. Typically, the value of Moment of inertia of Shaft is greater than 0.