# 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

MPa
mm
mm
Nmm

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:

Tmax = ( π / 16) x τmax x ((D4 - d4) / D) Where, Tmax= Maximum Torque (Twisting Moment) in Hollow Shaft τmax = 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,

Tmax = ( π / 16) x τmax x ((D4 - d4) / D)
= (3.14 / 16) x 10 x (5 - 3) / 5
= 213.6283 Nmm