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Thread: Grinder question

  1. #1
    Join Date
    Mar 2003
    Location
    SF Bay Area
    Posts
    330

    Grinder question

    How much run-out is acceptable in a bench grinder? I have an old 6" grinder that has almost no (.002") run out when the shaft is turned by hand, but if I push on the shaft perpendicularly to the axis of rotation the run-out increases to about .01"? Does anyone have an idea what the run-out on a new grinder, say a Rikon, would be? Thanks. -Howard

  2. #2
    Join Date
    Sep 2016
    Location
    Modesto, CA, USA
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    9,879
    I am not sure that it really matters. You have to true the wheel anyway. I do not think the cast bore in the wheel is that accurate either.
    Bill D.
    Last edited by Bill Dufour; 08-15-2018 at 12:16 PM.

  3. #3
    Join Date
    Feb 2014
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    Lake Gaston, Henrico, NC
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    8,973
    I sent several back before this one came.
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  4. #4
    Join Date
    Feb 2003
    Location
    In the foothills of the Sandia Mountains
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    One of the drawbacks to shaft runout is the side of the wheel will have some wobble. The bigger the wheel diameter the bigger the wobble. It usually isn't a problem unless you're trying to do delicate hand grinding.
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