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Wheel is loose on angle grinder shaft

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Wheel is loose on angle grinder shaft mm 01-11-2007
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Posted by mm on January 11, 2007, 9:02 pm


My Harbor Freight abrasive wheels have holes either too big or too
small for my Harbor Freight 4" angle grinder.

Was I supposed to get wheels with smaller or bigger holes or use an
additional spacer, or should I try to return the tool to Harbor
Freight?

I have very little use for one, so I bought the cheapest angle grinder
I could find, HF, and I bought their house brand set of grinder
wheels, four kinds on a piece of cardboard for 10 dollars. Months ago,
but I just got around to putting an abrasive wheel on the grinder.
Isn't it supposed to fit neatly?

The hole in the wheel is labeled 5/8" and is 5/8" (about 16mm)

The shaft at the place where the wheel rests is only as thick as the
threaded part but without the threads, at least 3 mm smaller than the
hole. I can't position the wheel and tighten the nut so that it
rotates true.

Since one grinds with the edge sometimes, espcially with the wheels
without the recessed hole, doesn't the wheel have to mount almost
perfectly?:

Potential partial fix 1: The outer diameter of the threaded parts is
almost 5/8", maybe a sixteenth or 32nd less. I could put a spacer on
the shaft so that the wheel would be at the threaded part.

Potential partial fix 2: There is a thick "washer" or spacer with a
shoulder that would fit bigger holes, 7/8" or maybe just under. Do
they have wheels with bigger holes?

These potential fixes don't seem right to me.

Posted by DerbyDad03 on January 11, 2007, 9:46 pm


I would certainly start back at Harbor Fright and see what they say.

My grinder (DeWALT) uses wheels that has a round raised area in the
center of the wheel and the grinder has a bowl that fits over the
raised center to hold it frimly centered and in place.

re: "I have very little use for one, so I bought the cheapest angle
grinder I could find."

I know you don't need to hear this, but you get what you pay for. While
you're at Harbor Fright, return the grinder and the wheels and get a
quality tool some place else. You probably paid $30 - $35 for the
orange one. For $65 you can get a DeWALT. (free shipping)

http://www.northerntool.com/webapp/wcs/stores/servlet/product2_6970_200323995_200323995

For somewhere in between, you'll find something much better than the
Harbor Fright one. Even if you only use it once, you'll be much happier
with a better tool and you won't be embarrassed to lend it to your
friends.


mm wrote:
> My Harbor Freight abrasive wheels have holes either too big or too
> small for my Harbor Freight 4" angle grinder.
>
> Was I supposed to get wheels with smaller or bigger holes or use an
> additional spacer, or should I try to return the tool to Harbor
> Freight?
>
> I have very little use for one, so I bought the cheapest angle grinder
> I could find, HF, and I bought their house brand set of grinder
> wheels, four kinds on a piece of cardboard for 10 dollars. Months ago,
> but I just got around to putting an abrasive wheel on the grinder.
> Isn't it supposed to fit neatly?
>
> The hole in the wheel is labeled 5/8" and is 5/8" (about 16mm)
>
> The shaft at the place where the wheel rests is only as thick as the
> threaded part but without the threads, at least 3 mm smaller than the
> hole. I can't position the wheel and tighten the nut so that it
> rotates true.
>
> Since one grinds with the edge sometimes, espcially with the wheels
> without the recessed hole, doesn't the wheel have to mount almost
> perfectly?:
>
> Potential partial fix 1: The outer diameter of the threaded parts is
> almost 5/8", maybe a sixteenth or 32nd less. I could put a spacer on
> the shaft so that the wheel would be at the threaded part.
>
> Potential partial fix 2: There is a thick "washer" or spacer with a
> shoulder that would fit bigger holes, 7/8" or maybe just under. Do
> they have wheels with bigger holes?
>
> These potential fixes don't seem right to me.


Posted by mm on January 11, 2007, 10:13 pm


wrote:

>I would certainly start back at Harbor Fright and see what they say.
>
>My grinder (DeWALT) uses wheels that has a round raised area in the
>center of the wheel and the grinder has a bowl that fits over the
>raised center to hold it frimly centered and in place.
>
>re: "I have very little use for one, so I bought the cheapest angle
>grinder I could find."
>
>I know you don't need to hear this, but you get what you pay for. While

You make a good point, but I've bought other stuff from them, and
never got something I couldn't even assemble. LOL That's partly why
I thought maybe I was missing something, and that there was nothing
wrong. It's hard to believe they made a bonehead mistake like this.
Unless they fixed it in newer models. Maybe they'll exchange it or let
me pay the difference. (They had one that was iirc one dollar less,
that was blue instead of orange. :) They have so many models of
things, often almost the same.)

I save all my receipts in one place but still haven't got the patience
to go through them. Of course I just want to make it work, and maybe
they can do that without taking it back. I'll look for the receipt.

>you're at Harbor Fright, return the grinder and the wheels and get a
>quality tool some place else. You probably paid $30 - $35 for the
>orange one. For $65 you can get a DeWALT. (free shipping)

It was something like that but then on sale for maybe 16. 16 is one
thing, but I can't rationalize spending more than that. 65 is out of
the question.

All I want to do is grind off the nails where they come into the attic
from the shingles, and everyone here said that was a bad idea anyhow.
They're probably right, and I'm sure I'll be convinced of it after the
first 5 nails. That's 3 dollars a nail. At my income, 16 is ok, but
more requires a real need. :)
>
>http://www.northerntool.com/webapp/wcs/stores/servlet/product2_6970_200323995_200323995

It looks nice. It has a 5/8 inch spindle, so the wheels I have are
probably ok.

Maybe I'll look at a good one in a store.

Thanks.

>For somewhere in between, you'll find something much better than the
>Harbor Fright one. Even if you only use it once, you'll be much happier
>with a better tool and you won't be embarrassed to lend it to your
>friends.


>mm wrote:
>> My Harbor Freight abrasive wheels have holes either too big or too
>> small for my Harbor Freight 4" angle grinder.
>>
>> Was I supposed to get wheels with smaller or bigger holes or use an
>> additional spacer, or should I try to return the tool to Harbor
>> Freight?
>>
>> I have very little use for one, so I bought the cheapest angle grinder
>> I could find, HF, and I bought their house brand set of grinder
>> wheels, four kinds on a piece of cardboard for 10 dollars. Months ago,
>> but I just got around to putting an abrasive wheel on the grinder.
>> Isn't it supposed to fit neatly?
>>
>> The hole in the wheel is labeled 5/8" and is 5/8" (about 16mm)
>>
>> The shaft at the place where the wheel rests is only as thick as the
>> threaded part but without the threads, at least 3 mm smaller than the
>> hole. I can't position the wheel and tighten the nut so that it
>> rotates true.
>>
>> Since one grinds with the edge sometimes, espcially with the wheels
>> without the recessed hole, doesn't the wheel have to mount almost
>> perfectly?:
>>
>> Potential partial fix 1: The outer diameter of the threaded parts is
>> almost 5/8", maybe a sixteenth or 32nd less. I could put a spacer on
>> the shaft so that the wheel would be at the threaded part.
>>
>> Potential partial fix 2: There is a thick "washer" or spacer with a
>> shoulder that would fit bigger holes, 7/8" or maybe just under. Do
>> they have wheels with bigger holes?
>>
>> These potential fixes don't seem right to me.


Posted by Rich256 on January 11, 2007, 10:08 pm


mm wrote:
> My Harbor Freight abrasive wheels have holes either too big or too
> small for my Harbor Freight 4" angle grinder.
>
> Was I supposed to get wheels with smaller or bigger holes or use an
> additional spacer, or should I try to return the tool to Harbor
> Freight?
>
> I have very little use for one, so I bought the cheapest angle grinder
> I could find, HF, and I bought their house brand set of grinder
> wheels, four kinds on a piece of cardboard for 10 dollars. Months ago,
> but I just got around to putting an abrasive wheel on the grinder.
> Isn't it supposed to fit neatly?
>
> The hole in the wheel is labeled 5/8" and is 5/8" (about 16mm)
>
> The shaft at the place where the wheel rests is only as thick as the
> threaded part but without the threads, at least 3 mm smaller than the
> hole. I can't position the wheel and tighten the nut so that it
> rotates true.
>
> Since one grinds with the edge sometimes, espcially with the wheels
> without the recessed hole, doesn't the wheel have to mount almost
> perfectly?:
>
> Potential partial fix 1: The outer diameter of the threaded parts is
> almost 5/8", maybe a sixteenth or 32nd less. I could put a spacer on
> the shaft so that the wheel would be at the threaded part.
>
> Potential partial fix 2: There is a thick "washer" or spacer with a
> shoulder that would fit bigger holes, 7/8" or maybe just under. Do
> they have wheels with bigger holes?
>
> These potential fixes don't seem right to me.

You have the wrong size wheels. That is indeed a 7/8 inch arbor on
their grinder and you can get the wheels with 7/8 inch holes at Harbor
Freight.

Posted by mm on January 12, 2007, 2:05 am



>
>> Potential partial fix 2: There is a thick "washer" or spacer with a
>> shoulder that would fit bigger holes, 7/8" or maybe just under. Do
>> they have wheels with bigger holes?
>>
>> These potential fixes don't seem right to me.
>
>You have the wrong size wheels. That is indeed a 7/8 inch arbor on
>their grinder and you can get the wheels with 7/8 inch holes at Harbor
>Freight.

Dang. You're right! <slaps forehead> Thanks! I looked again and it
does say on the box 7/8" arbor, and on the back of the card the wheels
came in, 5/8" as one of the dimensions.

When I bought the tool, I didnt' open the box and didn't notice it
among all those letters and little numbers on the box. And when I
looked at the wheels, the hole was small, but I'd never looked at the
shaft it went on.

I'm glad I looked at this *before* I was ready to go.

Maybe they will let me return the set of wheels I bought.


Some of their grinders say "5/8''-11 spindle with 7/8'' arbor adapter"
as if one can use both sizes, but mine doesn't say that.

Oh yeah, looking at their online catalog just now, the same grinder I
have is on sale now, for 14 dollars. That might be what I paid. But
it may be hard or more expensive to get 4" (not 4 1/2) wheels with a
7/8" hole. They included one in the box but I haven't found any
online. I'll look in the store, and I'll ask them. If they are
expensive, there goes my bargain. Boohoo.



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