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hydraulic pump HP requirements

hydraulic pump HP requirements

hydraulic pump HP requirements

Can anyone give me or direct me to useful formulae to calculate req'd horsepower for gpm and pressure?
This would be to size an internal-combustion engine to an (approximately)  22gpm 2-stage pump to run at 2500 to 3000 psi.   Yes, this is for a log splitter.
Seems there are wide variations on these numbers from the people that sell pumps and those that sell engines.

Thanx, Gatz

RE: hydraulic pump HP requirements

Seems to me ( and its been a while since I worked in hydraulics) that a ROT was 20gpm @1000 psi required 1 hp
another quick way-    (flow x pressure)/1714 = HP
(if you know the effieciency multiply that by 1714 then didvide)

RE: hydraulic pump HP requirements


This will work for you
BHP = [Q x H x SG] / [3960 x Eff]            
Q = rate in GPM    
H = Head in FT    
SG = specific gravity of pumped fluid        
Eff = efficiency of the pump        

All the best


RE: hydraulic pump HP requirements

Thnx, ruble3 & DADFAP....appreciate the help.

RE: hydraulic pump HP requirements

Be sure to use the continuous power out put for the engine not the break or intermittent output. Most manufactures have 2 ratings for each engine.

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