motor identification

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Forum topic by lepelerin posted 01-30-2016 07:12 PM 339 views 0 times favorited 7 replies Add to Favorites Watch
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471 posts in 1749 days

01-30-2016 07:12 PM

Topic tags/keywords: resource question motor buffing


I am looking for a motor for my future Beall buffing system.
In a second hand shop I saw this motor. There is no mark or no tag on it providing info. I do not know the speed, the power, etc … They do not either.

Maybe among you someone will recognize the motor and then it will help me to gather some info and make take a decision.

The motor seems very sturdy (no play on the shaft …) and very heavy, that’s all I can tell about it at the moment. I will have to go back, the person was not “authorized” to plug it but assured me it works. If I decide to buy it the store owner will be able to plug it up to make sure it’s working.

How much would you pay for it (if you know which kind of motor it is) knowing that the motor has been in an unheated storage for a long time.

Thank you for your help again,

Edit: PS: This motor was used as a buffing “machine”. I read that the max speed recommended for Beall is around 1750rpm.

7 replies so far

View MrUnix's profile (online now)


4049 posts in 1623 days

#1 posted 01-30-2016 08:00 PM

I’d give $5 for it max if I saw it at a garage sale. No motor data plate, unknown manufacturer, needing to be opened up for cleaning and new bearings, etc…


-- Brad in FL - To be old and wise, you must first be young and stupid

View bigblockyeti's profile


3587 posts in 1144 days

#2 posted 01-30-2016 08:25 PM

Yeah I think $5 would be my max too given the lack of data. What is the diameter and length of the case? That could at least give a (very) rough idea of what the horsepower could be. Total shot in the dark guess is somewhere between 1/4 and 1 hp. The speed is very likely to be around either 1725 or 3450 rpm.

View lepelerin's profile


471 posts in 1749 days

#3 posted 01-30-2016 10:49 PM

ok tx, good point about the bearing.
It’s about 8” in diameter and 11” long (without the shaft).
If no more than $5-10 I might get it, higher than that I won’t.

View dhazelton's profile


2294 posts in 1720 days

#4 posted 01-30-2016 11:05 PM

When you plug it in you should be able to ‘hear’ if it’s 1750 or 3400 rpm (if you have a table saw, you’ll just have a sense of it….). Listen for any squealing in the bearings or odd sounds on startup or shut down. It probably has a start capacitor which you might hear click off on shutdown. Make sure the plug is a modern grounded one and if you buy it make sure the ground wire is actually connected to something. I’m assuming it doesn’t have bronze bushings, but based on those holes I see (which should be on the top if they are oil holes) I might be wrong. If it works and is the right speed and is quiet I’d pay $20 if I needed a buffer. Heck, it already has the right mandrels which would cost you more than $20 to begin with.

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471 posts in 1749 days

#5 posted 01-31-2016 01:06 AM

dhazelton, thank you for your input. I will make sure to listen carefully. I think I will recognize the speed. The plug is an old 2 prongs, will redo it if I get the motor. I will certainly have to ask how to make sure it’s properly grounded.
The holes are not on the top but on the side.
Yes I noticed the mandrels and there are 2 buffing wheels that come with it, however they look pretty contaminated. Tx again

View Sparks64's profile


7 posts in 309 days

#6 posted 01-31-2016 04:54 PM

I believe those two holes on the side were for the rivets holding the motor nameplate with all the info you were seeking.
The holes on the shaft ends are for oiling, just a few drops $15-20 tops if it runs would be my offer

-- Sparks64,Oregon

View lepelerin's profile


471 posts in 1749 days

#7 posted 02-01-2016 06:52 PM

I will pass on the motor. Tx to all.

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