# Hollow Shaft Maximum Torque Calculator

Hollow shaft is a rotating shaft, which uses lighter metal but hold strength similar to solid shaft of the same diameter. Torque is a force required to rotate the hollow shaft at a fixed axis. Otherwise, it can be referred as a force needed to twist the hollow shaft. In the hollow shaft maximum torque calculator, enter the maximum shear stress, shaft outside and inside diameter experienced by a hollow shaft to calculate the maximum twisting moment (torque).

## Calculate Twisting Moment in Hollow Shaft

Hollow shaft is a rotating shaft, which uses lighter metal but hold strength similar to solid shaft of the same diameter. Torque is a force required to rotate the hollow shaft at a fixed axis. Otherwise, it can be referred as a force needed to twist the hollow shaft. In the hollow shaft maximum torque calculator, enter the maximum shear stress, shaft outside and inside diameter experienced by a hollow shaft to calculate the maximum twisting moment (torque).

Code to add this calci to your website

#### Formula:

T_{max} = ( π / 16) x τ_{max} x ((D^{4} - d^{4}) / D)
**Where,**
T_{max}= Maximum Torque (Twisting Moment) in Hollow Shaft
τ_{max} = Maximum Shear Stress
D = Shaft Outside Diameter
d = Shaft Inside Diameter
### Example:

The maximum shear stress, inside and outside diameter of the hollow shaft are 10 Mpa, 5 mm and 3mm. What is its maximum twisting moment?

#### Solution,

T_{max} = ( π / 16) x τ_{max} x ((D^{4} - d^{4}) / D)

= (3.14 / 16) x 10 x (5 - 3) / 5

= 213.6283 Nmm