Question about Black & Decker 4 1/2" Small Angle Grinder

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Angle grinder issue

I am using a 4 1/2" diamond blade to cut through 2 " of concrete, but the blade keeps falling off.

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  • Dean
    Dean May 11, 2010

    Do you have the securing nut on the correct way? Basically the inner surface of the nut needs to be flat against the blade for it to work correctly and hold the cutting disc in place Usually the nuts are reversible to fit either flat discs or rounded disc heads. It's either that or you do not have the right size bore on the diamond disc for your grinder.

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  • 285 Answers

Do you have the securing nut on the correct way? Basically the inner surface of the nut needs to be flat against the blade for it to work correctly and hold the cutting disc in place Usually the nuts are reversible to fit either flat discs or rounded disc heads. It's either that or you do not have the right size bore on the diamond disc for your grinder.

Posted on Jun 20, 2009

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