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  1. #1
    Join Date
    May 2009
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    melb
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    Default Vic Marc cbn wheel bush

    Stupid question but does it matter which way the bushes go onto the cbn wheel?

    One is the actual bush and the other is a fat nut - does it matter which goes towards the grinder?

    Sent from my ONEPLUS A5010 using Tapatalk

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  3. #2
    Join Date
    Dec 2005
    Location
    South Australia
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    4,470

    Default

    I would suggest the nut is to hold the wheel in place so yes Bush then nut

  4. #3
    Join Date
    May 2009
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    melb
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    Default

    Thanks so it appears that the arbor is quite short and I can have the bush on but not the thick washer. Do you think it's OK to use the stock washer?

    Sent from my ONEPLUS A5010 using Tapatalk

  5. #4
    Join Date
    Apr 2006
    Location
    Hobart
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    5,107

    Default

    Quote Originally Posted by qwertyu View Post
    Stupid question but does it matter which way the bushes go onto the cbn wheel?
    The only stupid question is the one you don't ask !

    Have you asked Vic Marc ?


    Cheers

    Graeme

  6. #5
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    May 2009
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    melb
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    Default

    I couldnt get onto vicmarc today but asked timberbits and they said the fat washer is for their own grinder which has a long arbor and its ok to use the waster that came with the grinder

  7. #6
    Join Date
    Feb 2016
    Location
    Perth WA Australia
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    Perfectly fine to use stock washer, just make sure your washer is true and wheel is running true and you're good to go. Also fine to have excess threads provided the nut doesn't bottom out, when it does you won't get enough torque on the wheel to secure it

  8. #7
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    May 2009
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    melb
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    How can I tell if the wheel is running true? If its not, how would I correct that?

  9. #8
    Join Date
    Jan 2014
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    Sydney Upper North Shore
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    4,464

    Default

    If it’s not running true you use a self aligning washer like this.

    Self-Aligning Spherical Washer Sets - for two CBN Wheels – Wood Turners Wonders

  10. #9
    Join Date
    Feb 2016
    Location
    Perth WA Australia
    Posts
    828

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    If it's vibrating, wobbles, visibly moves up and down then it's not true. This could also be caused by your grinder or if the shaft is bent.

  11. #10
    Join Date
    Jun 2005
    Location
    Helensburgh
    Posts
    7,696

    Default

    The number one reason the generic Asian grinders shake is the poor tolerances between the shaft thread and the nut thread. This causes the nut to tighten and not be straight and parallel to the shaft axis. The wobble washers fix this problem properly, I tried using steel machined bushes and it still did not sort it out and the wobble washer did.
    CHRIS

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