Hydraulic Force

Hydraulic force - area formulas and calculator

The force produced by a double acting hydraulic piston on the rod side can be expressed as

F₁ = π / 4 (d₂² - d₁²) P₁         (1)

where 

F₁ = rod pull force (lb)

d₁ = rod diameter (inches)

d₂ = piston diameter (inches)

P₁ = pressure in the cylinder (rod side) (lf_f/in)

The force produced opposite the rod can be expressed as

F₂ = π / 4 d₂² P₂         (2)

where 

F₂ = rod push force (lb)

P₂ = pressure in the cylinder (opposite rod) (lf_f / in)

Calculate Pull Force - with pressure acting on rod side

Piston diameter - R₂ (in)

Rod diameter - R₁ (in)

Cylinder pressure - P₁ (lf_f / in)

Calculate Push Force - with pressure acting opposite rod side

Piston diameter - R₂ (in)

Cylinder pressure - P₂ (lf_f / in)

The diagram below indicates the rod pushing force for cylinders with different diameters and pressures. 

Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

Web The Engineering ToolBox