Enter the shear stress (N/m^2), the polar moment of inertia (m^4), and the radius (m) into the calculator to determine the Shaft Torque.
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Shaft Torque Formula
The following formula is used to calculate the Shaft Torque.
Tshaft = ss * J/r
- Where Tshaft is the Shaft Torque (N-m)
- ss is the shear stress (N/m^2)
- J is the polar moment of inertia (m^4)
- r is the radius (m)
How to Calculate Shaft Torque?
The following example problems outline how to calculate Shaft Torque.
Example Problem #1
- First, determine the shear stress (N/m^2). In this example, the shear stress (N/m^2) is determined to be 500 .
- Next, determine the polar moment of inertia (m^4). For this problem, the polar moment of inertia (m^4) is measured to be 30 .
- Next, determine the radius (m). In this case, the radius (m) is found to be 4.
- Finally, calculate the Shaft Torque using the formula above:
Tshaft = ss * J/r
Inserting the values from above and solving yields:
Tshaft = 500 * 30/4 = 3,750 (N-m)
Example Problem #2
Using the same method as above, determine the variables required by the formula. For this example problem, these are:
shear stress (N/m^2) = 750
polar moment of inertia (m^4) = 10
radius (m) = 50
Enter these given values into the calculator or above yields:
Tshaft = 750 * 10/50 = 150 (N-m)
