Enter the load torque (N-m), the acceleration torque (N-m), and the safety factor into the calculator to determine the Required Torque. 

Required Torque Formula

The following formula is used to calculate the Required Torque.

Tr eq = (LT + AT) * SF

  • Where Treq is the Required Torque (N-m)
  • LT is the load torque (N-m) 
  • AT is the acceleration torque (N-m) 
  • SF is the safety factor 

How to Calculate Required Torque?

The following example problems outline how to calculate the Required Torque.

Example Problem #1

  1. First, determine the load torque (N-m). In this example, the load torque (N-m) is given as 13 .
  2. Next, determine the acceleration torque (N-m). For this problem, the acceleration torque (N-m) is given as  50 .
  3. Next, determine the safety factor. In this case, the safety factor is found to be 2.
  4. Finally, calculate the Required Torque using the formula above: 

Tr eq = (LT + AT) * SF

Inserting the values from above and solving yields: 

Tr eq = (13 + 50) * 2 = 126 (N-m)


Example Problem #2

Using the same method as above, determine the variables required by the equation. For this example problem, these are provided as:

load torque (N-m) = 500

acceleration torque (N-m) = 9

safety factor = 3.5

Enter these given values yields: 

Tr eq = LT + AT * SF = 1781.5 (N-m)