electric vs hydrualic pump
electric vs hydrualic pump
(OP)
I don't know much about pumps so please correct me if i am wrong. if i see a gear pump it is usually designated as a electric or hydrualic pump, and this is just how the pump is driven, electric pumps have an electric motor attached to the pump while a hydrualic pump has a shaft that needs to be rotated by some other means? And a hydrualic pump is basically an electric pump without the electric motor? is my understanding correct and is there anything else concerning this i should know (ie another means of driving pumps, any other differences bw hyd and ele pump)
thanks alot!
thanks alot!





RE: electric vs hydrualic pump
If I mentioned a hydraulic pump, I would not be speaking about the driver or even the pump configuration. I would be describing the service. We have pumps that provide hydraulic pressure for pistons and actuators. These pumps might be called hydraulic pumps even though most of them are variable displacement piston pumps driven by electric motors. Some of them are gear pumps driven by electric motors or steam turbines.
If I ever referred to an electric pump it would just be because I was too lazy to say electric motor driven pump.
Other industries might use different terminology than what I am describing.
Johnny Pellin
RE: electric vs hydrualic pump
RE: electric vs hydrualic pump
Best regards
Morten
RE: electric vs hydrualic pump
Johnny Pellin
RE: electric vs hydrualic pump
You can drive a gear pump either by an electric motor or by a hydraulic motor (or by other drives as described already). The bare shaft pump is the same. To drive a gear pump by a hydraulic motor is not very common because a hydraulic motor needs to be driven by a hydraulic pump which is again driven by electric motor. And such a hydraulic pump is pretty often a gear pump, too. So, that makes no sense. But there is a technical difference between the various gear pumps. Gear pumps are used in the oil hydraulics up to high pressures of 4500 psi or in industrial applications for much lower pressures. Both are called gear pumps and have the same function principle but the gears and the materials are different.
RE: electric vs hydrualic pump
strictly speaking all pumps are hydraulic pumps (hydraulic means liquid), however term is used for applications where oil pressure is used to create lineair or rotating motion.
jjpelin,
not much I can add to your comprehencive story
willing to learn every day, what is a progressive cavity pump? you mean a vane pump?
RE: electric vs hydrualic pump
Johnny Pellin