# Torsional deflection of hollow cylinder

Effortlessly calculate the deflection of hollow round tubes with our easy-to-use calculator. Optimize your design and ensure structural integrity.

Calculate the angular deflection of a hollow cylinder shaft when a torque is applied using this simple online Torsional Deflection of Hollow Cylinder Calculator. The deflection is expressed in units of Newton metres (N-mm) or foot-pound force (in-lb), and is determined by the length, applied torque, shear modulus, unsupported length, inside diameter, and outside diameter of the shaft. Torsion is the twisting of an object due to an applied torque.

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**Where:**

- T = Torque (N-mm, in-lb)
- L = Length of Shaft (mm, in)
- G = Shear Modulus of rigidity (Mpa, psi)
- I
_{o}= Second Moment of Inertia (mm4, in4)