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got an angle grinder that runs backwards!

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  • J Tiers
    replied
    The fix here is simple.... reverse the wires to the brushes. That HAS TO work.

    If it did NOT work, that is because it was not done, or not done correctly.

    Leave a comment:


  • MichaelP
    replied
    Originally posted by HWooldridge View Post
    It's dangerous to use with any threaded wheel so I'd get rid of it.

    Or you could run it on a battery with a transformer to get the voltage up and swap polarity.

    Originally posted by andywander View Post
    You can't run a battery through a transformer.
    Well, you can if you swap polarity frequently enough.

    Leave a comment:


  • jihe
    replied
    Sheet metal workers working with ventilation pipe often have their grinders changed to run backwards to direct the sparks away. Well, at least they did 25 years ago, I don't know if it's accepted anymore.

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  • Paul Alciatore
    replied
    No, hang it under a shelf.



    Originally posted by Beazld View Post
    Or stand on the other side!��

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  • macona
    replied
    Probably the stator is in 180 degrees off.

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  • madokie
    replied
    i am a lefty ,send it to me !!!!

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  • Beazld
    replied
    Originally posted by Errol Groff View Post
    Runs the wrong way? Simple fix...turn the plug over.
    Or stand on the other side!😀

    Leave a comment:


  • andywander
    replied
    Originally posted by HWooldridge View Post
    It's dangerous to use with any threaded wheel so I'd get rid of it.

    Or you could run it on a battery with a transformer to get the voltage up and swap polarity.
    You can't run a battery through a transformer.

    Leave a comment:


  • andywander
    replied
    Originally posted by JoeLee View Post
    We had one at the shop a long time ago that ran backwards. One of the guys pressed the shaft out of the armature and pressed it in the other end and it ran in the right direction. So basically what he did was turn the armature around end for end.
    All we could guess was it got messed up at the factory somehow.

    JL...............
    Seems like that would require the brushes to be moved to the other end as well....

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  • Errol Groff
    replied
    Runs the wrong way? Simple fix...turn the plug over.

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  • flylo
    replied
    If you decide to use it, make a pin, bolt or other failsafe device to lock the nut, brush or wheel on so there's no way it will unscrew or you're screwed.

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  • olcop
    replied
    It's metric!
    olcop

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  • Dan Dubeau
    replied
    I'd turn down the threaded shaft, build it back up with weld, and turn a lh thread on it. Then make the corresponding Lh nut. I can think of quite a few times I wish I had a grinder that spun the opposite direction. I've already got 6 grinders so if I got 2 free and one spun the opposite way, I'd think of it as a blessing in disguise. The electrical how's and why's an AC motor spins backward are beyond my pay grade. Of course your needs may be different.

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  • JoeLee
    replied
    We had one at the shop a long time ago that ran backwards. One of the guys pressed the shaft out of the armature and pressed it in the other end and it ran in the right direction. So basically what he did was turn the armature around end for end.
    All we could guess was it got messed up at the factory somehow.

    JL...............

    Leave a comment:


  • Dan_the_Chemist
    replied
    It's a rednirg elgnA. Look in McMaster-Carr to buy the appropriate sleehw gnidnirG.

    Leave a comment:

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