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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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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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 .

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

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