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Hydraulic Cylinder - Volume Displacement
Cubic displacement hydraulic cylinder
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Volume displacement of a hydraulic cylinder can be calculated as
q = A s / 231 (1)
where
q = cubic displacement (gal)
A = cylinder area (in2)
s = cylinder stroke (in)
- 1 in (inch) = 25.4 mm = 2.54 cm = 0.0254 m = 0.08333 ft
- 1 in2 = 6.452 cm2 = 6.452x10-4 m2 = 6.944x10-3 ft2
- 1 gal (US) = 3.785x10-3 m3 = 3.785 dm3 (liter) = 0.13368 ft3

Example - Hydraulic Cylinder Cubic Displacement
A 4" cylinder with a cylinder area 12.57 in2 moves a 30" stroke. The cubic displacement can be calculated as
q = 12.57 (in2) 30 (in) / 231
= 1.63 gal
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Related Topics
- Hydraulics and Pneumatics - Hydraulic and pneumatic systems - force, pistons, pumps and fluids
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