A different bearing question...
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A different bearing question...

  1. #1
    Super Moderator HammerDown's Avatar
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    Question A different bearing question...

    Are the thin pencil tracks left by the dial bore guage harmless, can you safely burnish them away somehow?
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    gn7
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    Quote Originally Posted by HammerDown View Post
    Are the thin pencil tracks left by the dial bore guage harmless, can you safely burnish them away somehow?
    P bearings? would worry about it, unless your dial indicator has a chisel for a tip



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    Default Thin coating

    Quote Originally Posted by HammerDown View Post
    Are the thin pencil tracks left by the dial bore guage harmless, can you safely burnish them away somehow?
    I think what you're refering to is just the thin "break in coating" on the bearing. Some people actually remove it with scotchbrite. The bearing manufacturers tell you not to, it is there for a reason. The slight "pencil" lines you're seeing should be harmless, and will disappear in a few minutes of running. If, however, you get into the "shiny" stuff you might want to lightly rub them out with very fine steelwool / scotchbrite..........Set the spring load on the bore gage to a minimum at nominal size.......Ray
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    Just another Wannabe Wannabe's Avatar
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    My brother does not mind them, and runs them like that all the time. Never had problem one. I however, just can't stand the looks of that groove, so I polish them off with 2000 grit sand paper and then clean them real good before instalation.

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    gn7
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    Quote Originally Posted by Wannabe View Post
    My brother does not mind them, and runs them like that all the time. Never had problem one. I however, just can't stand the looks of that groove, so I polish them off with 2000 grit sand paper and then clean them real good before instalation.
    get yourself a different indicator tip or a lighter spring



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    Last edited by gn7; 01-12-2009 at 01:43 PM.

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    Super Moderator HammerDown's Avatar
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    Quote Originally Posted by gn7 View Post
    P bearings? would worry about it, unless your dial indicator has a chisel for a tip
    P or H...are you saying the P's 'would' be a problem if the bore gauge left some tracks?
    And If so, how should one deal with it?
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    Quote Originally Posted by HammerDown View Post
    P or H...are you saying the P's 'would' be a problem if the bore gauge left some tracks?
    And If so, how should one deal with it?
    I realy wouldn't worry about it. I always clean my bearings before final assy...I used to use Scotchbrite until I found out it's impregnated with an abrasive that can get imbedded into the beairngs. Now I just use a terry shop towel and clean solvent and give them a good wipe, always in the direction of rotation (meaning not perpendicular to, or across the bearing.)
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    gn7
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    Quote Originally Posted by HammerDown View Post
    P or H...are you saying the P's 'would' be a problem if the bore gauge left some tracks?
    And If so, how should one deal with it?
    No, I asked that because I couldn't imagine leave a "pencil" line on a "H" bearing that easily. Like Steelcomp said, a CLEAN shop rag and some solvent is the best way to clean up a bearing. I never did use the scotchbrite deal but I did use to use worn 1000 grit paper. Now its just a clean shop type rag and some solvent or WD-40



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