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Larry Jaques Larry Jaques is offline
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Default free 7.5hp motor - probable weight? ball bearing or bushings? (four pix)

On Mon, 19 Oct 2009 12:31:26 -0400, the infamous dave
scrawled the following:

I've been offered a free electric motor, "brooks" brand, apparently made
in England.


According to the tag, it was made in Over There by a company from
Chicago, Illinoisy. It's good for 60Hz, though.


I later intend to use it in a rotary converter project.
though it's here IN my town, making contact with the guy is "pretty near
impossible". presently await his call, or reply, which could be a few
more weeks (with luck).

meanwhile, here's the -only- four photos i have of it, the guy provided
these

http://smg.photobucket.com/albums/v7...ent=motor1.jpg
http://smg.photobucket.com/albums/v7...ent=motor2.jpg
http://smg.photobucket.com/albums/v7...ent=motor3.jpg
http://smg.photobucket.com/albums/v7...ent=motor4.jpg


meanwhile, guys, hopefully YOU can tell me:

how much this thing MIGHT weight, roughly? or, alternately, your best
guess would be 'more than I know now. question has mostly do do with
loading considerations - what I'd need to bring when I go get it. I
found two 'similar-looking' motors on ebay (or somewhere), one at 185
lbs, another at 196 lbs. that sound about right?


It'll likely weigh only "about as much as a small horse." You'll
soitenly need a hoist for it.


also, do the two grease fittings indicate this particular motor has
bushings 'instead of' ball bearings?
OR do the grease fittings near the endbells indicate -nothing-, other
than "this motor has grease fittings"?

thanks guys :-)


Good question. Look up "307" and "309" bushings. (Hornady?!?)
http://www.engineersedge.com/nema_frames.htm
Baldors with 254U frames use 6307/6309 ball bearings. shrug

--
The blind are not good trailblazers.

-- federal judge Frank Easterbrook