LFLondon
Hot Rolled
- Joined
- Dec 1, 2007
- Location
- North Carolina
Is the 120 volt 15 amp 60 cycle 1/6 hp motor on the headstock of a Brown & Sharpe #13 universal grinder single phase or three phase?
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Is the 120 volt 15 amp 60 cycle 1/6 hp motor on the headstock of a Brown & Sharpe #13 universal grinder single phase or three phase?
Very unusual to find 120V 3 phase motors. I have never seen one
What are your thoughts on such a conversion? I need to use the machine and this is my only option. I see no reason why it wouldn't work. Thanks to you and thermite for your feedback.
Lawrence
I'm not a fan of "recent" Baldor motors. Even their "room mate" Reliance are not what they once where. But they do go round and round.
A SG with direct coupled motor right on the spindle benefits form retaining 3-P.
Once you introduce a belt, 1-P isn't such a detriment.
Worst-case you MIGHT see some "watermarking" pattern on finely ground surfaces. But maybe NOT. And it won't be a washboard road, even so, only an optically detectable artifact, worse-case.
So long as what you plan is readily reversible back to OEM, there's no lasting harm, so just do it and use it. Do mind spindle lube and warm-up! They are costly buggers to have rebuilt! Plenty of info on that.
Cheapest "substitute" coalant pump under my roof replaces a fancy German 3-P one for the Kasto PHS. US made "Little Giant" at about $25, "NOS". Made and sold as a "condensate pump" for large commercial air-conditioners. That's probably a larger market than the machine-tool industry and priced to compete accordingly.
Next cheapest a Becket out of Texas, about $50, also mostly plastic.
These handle my Houghton water-emulsion coolants.
A far heavier built Cast Iron Flar @ $90 was made in Taiwan. Neat cutting oil, no water, for that one.
NONE are "submersible". All are the common motor atop a shaft housing, only the pumping elements submerged down in the coolant.
USED pumps are a dice roll. Expect them to be trashed, risk of dead-loss plus postage. DAMHIKT!
And all of my pumps are 230 VAC or 120/240 VAC and SINGLE PHASE.
1-P is ALWAYS there, whether you run it separately out of the wall, or tap two hots of an on-machine 3-P supply. 1-P also uses simpler, more common, and cheaper switches!
That's recent. Ft. Smith or Mexico, either one.How about a Baldor bought around 10-12 years ago? That describes mine and its new in box.
Thanks for the extra feedback, thermite. I am very budget constrained so will have to work my way through all this. I think fixing the problem may run into money I don't have to put into it,
i.e. any consultant or components and I am not experienced enough to troubleshoot and rebuild. Converting the grinding spindle motor to 1 phase is something I can do and this will get me up and running.
Is there any way to manually lubricate the machine without the oil pump? I am thinking the pump may be OK for lubrication but not operating the table feed as I was advised it wouldn't by the vendor. I could always chuck up the pulley to the oil pump in an electric drill and give it a spin before using the machine if the pump will actually lube the machine.
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