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Hydraulic Oil Pumps - Horsepower Required
Horsepower required by hydraulic pumps
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A practical formula for calculating horsepower required by a hydraulic pump
can be expressed as
PHP = q p / 1714 (1)
where
PHP = horsepower (HP)
q = required pump capacity (gpm)
p = required pressure (psi)
- 1 gpm (US) =6.30888x10-5 m3/s = 0.227 m3/h = 0.06309 dm3(litre)/s = 2.228x10-3 ft3/s = 0.1337 ft3/min = 0.8327 gpm (UK)
- 1 psi (lb/in2) = 144 psf (lbf/ft2) = 6,894.8 Pa (N/m2) = 6.895x10-3 N/mm2 = 6.895x10-2 bar
- 1 hp = 745.7 W
Example - Hydraulic Pump
Power required by a a pump with 20 gpm capacity and 1500 psi pressure can be calculated as
PHP = 20 (gpm) 1500 (psi) / 1714
= 17.5 HP
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Related Topics
- Hydraulics and Pneumatics - Hydraulic and pneumatic systems - force, pistons, pumps and fluids
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