Discover hydraulic pump calculations and formulas for engineering applications at Evolution’s comprehensive engineering toolbox.
Horsepower Required to Drive a Pump
Example: How many horsepower are needed to drive a 5 gpm pump at 1500 psi?
Formula: PSI * GPM / 1714 = HP = horsepower needed
Pump Output Flow (in Gallons per Minute)
Example: How much oil will be produced by a 2.5 cubic inch pump operating at 1200 rpm?
Formula: RPM x Displacement ÷ 231 = gpm
Pump Displacement Needed for GPM of Output Flow
Example: What displacement is needed to produce 5 GPM at 1500 RPM?
Formula: 231 x GPM ÷ RPM = in3 per revolution
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