bench grinder wheel replacement?

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Subject Author Date
bench grinder wheel replacement? Grant Erwin 04-23-2006
Posted by Snag on April 23, 2006, 10:23 pm
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Proctologically Violated©® wrote:
> Now, what's the secret to getting these goddamm wheels to run
> *true*???? goodgawd....
I've been wondering the same thing ! Changed out the stones on my 25 yr old
unit and the new stones will *not* run true . I always thought the flange
should bear against a shoulder on the shaft , which would hold it true . The
damn flanges aren't even a good fit on the shaft ! The old stones ran true
... but I finally took the dresser to the sides of the pink one , just to
have a decent chance at grinding lathe bits .


--
Snag
'76 FLH "Bag Lady"
"A hand shift is a manly shift ."
<shamelessly stolen>
none to one to reply



Posted by Glenn on April 23, 2006, 6:40 pm
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>I have a little Rockwell 3-phase grinder I picked up recently. It had been
>wired completely wrong and today I rewired it and it runs smooth as glass.
>I have the same problem with it that I have had with every bench grinder,
>though. The shaft spins one way, so the wheels rotate down towards the tool
>rest. The nut on one end of the shaft is RH and the nut on the other end is
>LH. If I put a wrench on both shaft nuts and crank, one will loosen. The
>question is, how do I loosen the other one? I can't for the life of me see
>why grinder manufacturers don't put a hole you can put a pin in to lock the
>shaft for changing wheels. I sure don't want to put Vise Grips on the naked
>threads - what is the trick I'm missing?
>
> GWE
Hold it with your hand on the wheel and put an impact wrench on the other
end. (I know that sounds a bit like Altavoz (sp) but it isn't a lathe
chuck) :)



Posted by Ignoramus17838 on April 23, 2006, 6:45 pm
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I had the same problem with my Baldor. I did use visegrips, but put a
folded napkin between the jaws and threads.

i

> I have a little Rockwell 3-phase grinder I picked up recently. It had been
wired
> completely wrong and today I rewired it and it runs smooth as glass. I have
the
> same problem with it that I have had with every bench grinder, though. The
shaft
> spins one way, so the wheels rotate down towards the tool rest. The nut on one
> end of the shaft is RH and the nut on the other end is LH. If I put a wrench
on
> both shaft nuts and crank, one will loosen. The question is, how do I loosen
the
> other one? I can't for the life of me see why grinder manufacturers don't put
a
> hole you can put a pin in to lock the shaft for changing wheels. I sure don't
> want to put Vise Grips on the naked threads - what is the trick I'm missing?
>
> GWE


Posted by Grant Erwin on April 23, 2006, 7:23 pm
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I may have to resort to turning up a disk which has a hole bored in its
periphery. Then I could install the disk instead of a grinding wheel, put a pin
in the hole and grab onto it, and then I could crack the nut on the other end.

This is a nice little grinder from the 1970s it looks like. I think there's a
little tiny bit of corrosion in the shaft nut.

I tried grabbing a wheel on the other end to loosen the stuck nut, didn't work.
I could always stick a scrap grinding wheel on and grab that with Vise-Grips, I
have about six old bench grinding wheels, all scrappers.

GWE

Ignoramus17838 wrote:
> I had the same problem with my Baldor. I did use visegrips, but put a
> folded napkin between the jaws and threads.
>
> i
>
wrote:
>
>>I have a little Rockwell 3-phase grinder I picked up recently. It had been
wired
>>completely wrong and today I rewired it and it runs smooth as glass. I have
the
>>same problem with it that I have had with every bench grinder, though. The
shaft
>>spins one way, so the wheels rotate down towards the tool rest. The nut on one
>>end of the shaft is RH and the nut on the other end is LH. If I put a wrench
on
>>both shaft nuts and crank, one will loosen. The question is, how do I loosen
the
>>other one? I can't for the life of me see why grinder manufacturers don't put
a
>>hole you can put a pin in to lock the shaft for changing wheels. I sure don't
>>want to put Vise Grips on the naked threads - what is the trick I'm missing?
>>
>>GWE
>
>

Posted by Mike on April 23, 2006, 6:55 pm
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Impact it off, tighten with a rag stuck in the opposite wheel. With use the
wheel will tighten itself.

I bought a grinder cheap one time. It was missing the left hand nut and the
guy thought it was almost junk without that special nut. Went to the auto
parts and bought a Chrysler left hand lug nut from the sixties vintage.




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