Calculate cylinder pressure from force and bore diameter, or cylinder force from pressure, in psi, bar, lbf or kN, including hydraulic rod-side area.

Use the effective piston area for the side being pressurized.

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Cylinder Pressure Formula

The following formula is used to calculate the Cylinder Pressure. 

Pc = Fc / Ac
  • Where Pc is the Cylinder Pressure (N/m2)
  • Fc is the cylinder force (N) 
  • Ac is the cylinder area (m2) 

To calculate ideal cylinder pressure, divide force by the effective area: full bore area for extension or annular area for retraction. Opposite-side gauge pressure is assumed zero; friction and other losses are excluded. This estimate does not establish rated working pressure or a safe load.

How to Calculate Cylinder Pressure?

The following two example problems outline how to calculate the Cylinder Pressure.

Example Problem #1:

  1. First, determine the cylinder force (N). In this example, the cylinder force (N) is given as 400.
  2. Next, determine the cylinder area (m2). For this problem, the cylinder area (m2) is given as 15.
  3. Finally, calculate the Cylinder Pressure using the equation above: 

Pc = Fc / Ac

Inserting the values from above and solving the equation: 

Pc = 400 / 15 โ‰ˆ 26.666667 (N/m2)

Example Problem #2: 

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

cylinder force (N) = 560

cylinder area (m2) = 50

Entering these values yields:

Pc = 560 / 50 = 11.2 (N/m2)