`theta = (32* L * T )/(( G *pi)*( D ^4- d ^4))`

Enter a value for all fields

The angular deflection of a torsion hollow shaft can be expressed as

    θ = 32 L T / (G π (D4- d4))

Where:

• L = length of shaft (mm, in)
• G = modulus of rigidity (Mpa, psi)
• d = shaft inside diameter  (mm, in)
• D = shaft outside diameter (mm, in)
• T = twisting moment (Nmm, in lb)