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Monarch 10EE hydraulic drive

Parts availability aside, what about the concept of fluid power is undesireable in characteristic as

applied to this lathe's drive. It would seem to me that with current hydraulic technologies, a

reincarnation of Monarch's original concept for the drive would eliminate much of the complication of

the electrics. For the elecronically/electrically challenged person like me, such an alternative is

certainly quite alluring, purely mechanical, easy concepts to wrap you brain around on, especially as

applied to the 10EE drive. What problems do you see that I don't in terms of say a 5 HP hydrostatic

drive? What annoying charactericstics resulting from this drive can be anticipated? What

would make it inferior to electrics? Please give me perspective. Thanks.

Reply to
trg-s338
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Have you ever worked with a 5 Hp hydraulic drive? They tend to be VERY noisy and inefficient. There are some packaged hydraulic VSD systems that might be a bit better than the traditional pump and motor system. Given a large enough hydraulic motor, it will satisfy the need for lots of torque at low speed.

If you can find a suitable packaged drive, or a set of pump and motor with appropriate pump control or valve, then it should work. If the noise drives you to total distraction, don't say you weren't warned. If you think you can just go to the local power transmission house and buy one new, well FORGET that. It will not only cost more than the lathe, it may cost more than the lathe cost NEW!

Jon

Reply to
Jon Elson

The way to go on a 10EE is a plain jane three phase motor and VFD. Cheap, easy to install and works beautifully. If you go this way, I'll give you a step by step.

Reply to
Karl Townsend

Thank you Karl. I am certain to take you up on that kind offer. It just may be the way to go for certain, I just wanted to know that I've explored the alternatives fully before I decided.

Reply to
trg-s338

As usual Jon, your rational is irrefutable, thanks for bringing me back to the ground and practicality.

Reply to
trg-s338

Hey, if you found a working hydraulic VSD in a scrap yard for $50, and it was capable of the speeds and torques you needed, and would physically fit in the lathe, that might be reasonable. But, the likelyhood of all that falling into place all at once is fairly small. These things used to be pretty common, up until the mid 1960's. I've seen them used on fire sprinkler booster pumps, for instance, in buildings over 10 stories or so.

Jon

Reply to
Jon Elson

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