Enter the theoretical torque (N-m) and the actual torque (N-m) into the calculator to determine the Hydraulic Motor Efficiency. 

Hydraulic Motor Efficiency Formula

The following formula is used to calculate the Hydraulic Motor Efficiency. 

Ehm = TT / AT *100

  • Where Ehm is the Hydraulic Motor Efficiency (%)
  • TT is the theoretical torque (N-m) 
  • AT is the actual torque (N-m) 

How to Calculate Hydraulic Motor Efficiency?

The following two example problems outline how to calculate the Hydraulic Motor Efficiency.

Example Problem #1:

  1. First, determine the theoretical torque (N-m). In this example, the theoretical torque (N-m) is given as 56.
  2. Next, determine the actual torque (N-m). For this problem, the actual torque (N-m) is given as 100.
  3. Finally, calculate the Hydraulic Motor Efficiency using the equation above: 

Ehm = TT / AT *100

Inserting the values from above and solving the equation: 

Ehm = 56 / 100 *100 = 56 (%)

Example Problem #2: 

Using the same process as above, first define the variables required by the formula. In this case, these values are:

theoretical torque (N-m) = 75

actual torque (N-m) = 200

Entering these values yields:

Ehm = 75/ 200*100 = 37.5 (%)