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Thread: BEARING RETENTION COMPOUNDS

  1. #1
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    BEARING RETENTION COMPOUNDS

    ]Wanted to put this in "font of all wisdom" but not allowed. so have put it here as its my bike section.

    Have a Hitachi 9" angle grinder (G23SC2) with rear bearing failure (the cage has disintigrated allowing all the balls to run together
    (bit like the timong side bearing (3) of my T140v before I replaced it with a lipped roller). Have dismantled the machine and have
    sourced a new bearing and washers which hopefully are wending their way to Crete.

    The bearing is housed on the plastic casing and green sealant was used. i believe this is a bearing retaining compound. Have googled locktite but there several bearing retaining products.

    Can any engineers out there give me advice on what to use. Only want a small quantity as will prob not need it again. A loctite no would be helpful as I could possibly source it here without trying to explain what I want it for in Greek.

    As a general point is this stuff used in modern bike engineering

  2. #2
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    If I am ever on life support - Unplug me......
    Then plug me back in..........

    See if that works .....

  3. #3
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    I'm guessing that your best bet is a two part epoxy such as JB weld or similar but you really need to know what type of plastic makes up the housing to be sure
    Regards bisbee

    Courage isn't having the strength to go on - it is going on when you don't have strength.

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    Quote Originally Posted by Blackal View Post
    +1 top gear

  5. #5
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    Quote Originally Posted by cbrgaz View Post
    +1 top gear
    Have you used it to bond a bearing to plastic ?
    Regards bisbee

    Courage isn't having the strength to go on - it is going on when you don't have strength.

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    Quote Originally Posted by bisbee View Post
    Have you used it to bond a bearing to plastic ?
    Just love these "challenging" posts................

    Instead of saying "Loctite may have an effect on some plastics" or similar, followed by a bit of reasoning.

    Al
    If I am ever on life support - Unplug me......
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  7. #7
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    Quote Originally Posted by Blackal View Post
    Just love these "challenging" posts................
    now
    Instead of saying "Loctite may have an effect on some plastics" or similar, followed by a bit of reasoning.

    Al
    I don't believe loctite or similar is meant to adhere metal to plastic hence why I suggested two part epoxy Plastic is by nature very smooth and as such provides little purchase for glues When attempting to glue to plastic it helps to know what type of plastic it is The environment will also be a factor eg grease/temperature etc
    Regards bisbee

    Courage isn't having the strength to go on - it is going on when you don't have strength.

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    It's not a case of "knowing better" - It's avoiding the "challenging" posts.

    With low-yield bearing-fit, I've never had to use anything more than light pressure with a screwdriver to remove the "cured" bearing fit from any material.

    Al
    If I am ever on life support - Unplug me......
    Then plug me back in..........

    See if that works .....

  9. #9
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    Quote Originally Posted by Blackal View Post
    It's not a case of "knowing better" - It's avoiding the "challenging" posts.

    With low-yield bearing-fit, I've never had to use anything more than light pressure with a screwdriver to remove the "cured" bearing fit from any material.

    Al

    Maybe I read the op wrong It appeared that the bearing was to be secured in a plastic housing
    Regards bisbee

    Courage isn't having the strength to go on - it is going on when you don't have strength.

  10. #10
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    Quote Originally Posted by Blackal View Post
    Thanks for advice. Will go for 641. Only warning on plastics, is stress cracking, I presume because the material expands on curing to hold the bearing. This is a heavy
    duty industrial tool and the "plastic" is substantial so I have got no worries on that front.

  11. #11
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    Normal loctite will make the plastic crack. Simples.

    I agree with JB Weld or similar as a suggestion.

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    Simple ARALDITE GLUE also works
    still no deid

  13. #13
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    My first thought as I have always had good results with Araldite when other so called super glues have failed. What put me off was would I be able to dis-assemble bearing if it needs renewing again?

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