Angle grinder problem

3

30-30 Cal.

Joined
Jan 1, 2004
Messages
243
My four and a half inch DeWalt angle grinder keeps eating the center out of the cutting disks. There doesn't seem to be anything missing, at least not according to the owners manual. Any ideas?

Dave
 
30-30 Cal. said:
My four and a half inch DeWalt angle grinder keeps eating the center out of the cutting disks. There doesn't seem to be anything missing, at least not according to the owners manual. Any ideas?

Dave
Click to expand...
:confused:
eating the hole out or braking the center out :confused:




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I don't want to hear it IG :grumpy: :D
 
try turning the bottom plate around.......or putting a rubber washer in between it and the bottom plate.
 
I have used angle head hand grinders all my life (oilfield welding and etc.) and have never had that problem. Not once. The problem may be the brand of disc. If not that it could be either a bent arbor shaft or the disc is held too tight or too loose.
 
May be the bearing on the rod is the problem. If this is a little defunct it may cause a breaking effect. You have to repair this thing. If it goes worse the motor will suffer :barf: ... This is the only thing i figure.... :grumpy:

Best regards, Emre.... :)
 
The ceter hole, which has a small metal ring around it, becomes larger and irregular (This happens almost the minute I turn it on); and the small metal ring becomes separated (its a flimsey thing).

I have a bottom plate and a top plate, it didn't come with a rubber washer. This doesn't happen with grinding disks, which are more substantial. I took it back to the home depot to compare the fittings to a new one, figured I would see if I was missing a piece. The stupid fools glued the disk and fittings on the exibition dispalys together becasue they were afraid someone would steal them, I guess. They were absolutely no help. I was going to call the DeWalt Service center, but thought I'd ask first here.

Dave
 
The center hole, which has a small metal ring around it, becomes larger and irregular (This happens almost the minute I turn it on); and the small metal ring becomes separated (its a flimsey thing).

I have a bottom plate and a top plate, it didn't come with a rubber washer. This doesn't happen with grinding disks, which are more substantial. I took it back to the home depot to compare the fittings to a new one, figured I would see if I was missing a piece. The stupid fools had glued the disk and fittings on the exibition dispalys together, becasue they were afraid someone would steal them, I guess. They were absolutely no help. I was going to call the DeWalt Service center, but thought I'd ask first here.

Dave
 
30-30 Cal. said:
The center hole, which has a small metal ring around it, becomes larger and irregular (This happens almost the minute I turn it on); and the small metal ring becomes separated (its a flimsey thing).

I have a bottom plate and a top plate, it didn't come with a rubber washer. This doesn't happen with grinding disks, which are more substantial. I took it back to the home depot to compare the fittings to a new one, figured I would see if I was missing a piece. The stupid fools had glued the disk and fittings on the exibition dispalys together, becasue they were afraid someone would steal them, I guess. They were absolutely no help. I was going to call the DeWalt Service center, but thought I'd ask first here.

Dave
Click to expand...

it needs to be tighter I'd say,,,, it's moving on you...
 
Dan, that's exactly the problem, but no matter how tight I make it, it still happens. I suspect I have a washer or something missing.

I don't think the problem is the rod, it's fairly new, hasn't seen heavy service and works fine with the grinding wheel on it. It could be the type of disks I buy too. I'll look into it.

Dave
 
I re-read the post and see the problem. Your talking about cutting disks, not grinding. They are too thin and the flange is preventing it from tightening.

Make or buy a fiber washer that will fit over the flange. This will allow it to completely tighten.
 
The nut that tightens down on the shaft has a raised center for the grindingdisks on one side and is flat on the other side for cutting disks. If you put the nut on with the wrong side down the cutting disk will move on you. If you do it right the disk will not move at all.
 
If you have the same model dewalt as me, I had that problem too. It's designed to use disks with a little depression in the center, and the cutters don't have that, they're flat.
 
If we're talking a type 27 grinder using a 1/16 zip disk, I mounted mine with the depressed center "backwards" and it worked just fine. Can't be less safe than running a grinding wheel without guards?
Anyway, I live down the street from a hospital, and haven't been to emergency for over a year...
 
Ok, I understand. I'll look a look and make sure I've got the right side on when cutting. If I still have a problem I'll try the rubber washer. It shouldn't move the.

Thanks,

Dave
 
Boy I hate to admit this but I take the guards off before I turn them on for the first time. That's bench grinders, angle grinders, chop saws....etc. Damn things get in the way.
 
I don't know about that. Peter. Sounds dangerous. To be honest, I'm wary of those little sons of guns. They move Fast!

So far, without even selling one knife, I've managed to break a small bone in my hand (and there's no wayyy I'll tell that story); get a steel sliver in my eye (and that one scared me to death, now I wear safety glasses just hand handing); and setting myself on fire. You guys should charge more, every knife has been dipped in blood.

Well, guess that's what's called experiece.

P.S. By the way, I sent you an email.

Dave
 
I had the same problem, and I took a washer and with a dremel and a sanding wheel, I made the hole bigger (there are probably better ways to make the hole bigger, but I couldn't think of any), and put it under the cutting wheel. I had to make the hole bigger so the bolt would tighten down on it and not get caught up on the washer. Basically with the cutting wheel will have a slight bend in it if you dont do that and will shear off around the center or fly to pieces, (I have had both happen). It takes some doin' to get the washer aligned with the nut, but it should prevent any bend in the wheel and keep your cutting discs around a little longer. I actually used 2 washers, but only had to enlarge the hole on one, the other one just provided more space.
 
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