Question about Dewalt D28112 Heavy Duty 4 - 1/2" Small Angle Grinder

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D28111 angle grinder stops all over a sudden. what are the possible causes

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  • pastrust55 May 11, 2010

    have you checked the brushes in the motor? or perhaps some small piece of what you are grinding has shorted the armature inside the grinder? Or check the trigger switch to make sure the wires are securely clipped in.


    The alternative is the end of the cord is shorting out or the plug pins are loose. Try a new cord from the manufacturer.

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If its intermittent most likely cause, there is a break in the main power supply cable.  Do a continuity check.

Posted on May 20, 2009

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1 Answer

Grinding problem


That is a good idea. Also one or both brushes brushes could be stuck in the holder. If stuck I would just replace the brushes so I could count on it working a long while.Give the brush holders a good cleaning if you decide to replace or not.

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I have a dewalt dw818 angle grinder when i press the trigger it starts spinning but if i tilt the grinder a little it stops spinning done the brushes already help please


Check your power cord. Turn the grinder on, then pull and twist the power cord, especially by the boot coming out of the grinder. If there's a break in the line, it's possible for it to work in some positions but it will die if you change the orientation of the cord to the tool.

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1 Answer

How do I remove the cover of the black and decker angle grinder.It stopped working,I think a wire is loose inside,but i cannot get it open to see if I am right. Can anyone help? Thanks. Gerry


Hi Gerry,
The body of the grinder should be in two halves. Normally there are two or more screws holding the plastic parts together but these may be hidden behind plastic stoppers. See diagram:

http://servicenet.blackanddecker.com/Products/DetailDiagram?isId=true&productNumber=11651&selectedType=16337#

Remove the screws and it should be possible to split the case.

Hope this helps!

Apr 27, 2011 | Black & Decker 4 1/2" Small Angle Grinder

1 Answer

I own a metabo 9-125 quick but can't don't know how to place the blade


On the silver part on top of the grinder is a button , press this button and hold it down. now turn the blade until it stops moving, this locks the blade, keep holding the button down and turn grinder over ,and turn the nut counter clockwise, and remove it , take old blade off ,put on new one .it should go over the shaft and at the bottom on a "fit" Make sure it is on the "fit". replace the nut and tighten. If you dont get the nut tight enough it will loosen while in use and the disc you are cutting/grinding with will wobble and may even come off causing possible injury .

Jan 29, 2011 | Metabo ® 12 Amp 9000 RPM Model WE14150...

1 Answer

I have mac allister angle grinder the problem when switch on the geinder start and suddenly stop and showing over loaded


Hi ibychackoja, It is the problem of the carbon brass replace it with a new with the identical size of the old one. Feel free to ask whatever the results.
Regards; VOTIT

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1 Answer

I need a clamp nut for a B&D angle grinder model #6247. Where can I purchase one??


The clamp nut for angle grinders have a standard thread.
It should be possible to get one at a large tool store. You may have to buy a new wrench for tightening the nut though.

Aug 30, 2010 | Black & Decker 4 1/2" Small Angle Grinder

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