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 

To calculate the required torque, sum the load torque and acceleration torque, then multiply the result by 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)