TDL 30 rear bearing wearing out fast

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  • February 14, 2009 at 2:07 pm #43475
    Chris_B
    Participant

    I have a TDL 30, new in 2002. It’s the later version with the plastic duct.
    In 2007 the rear bearing failed and I replaced it. I’ve just had to replace it again – same symptoms exactly, the phosphor bronze bush wears through and the steel panel acts like a lathe on the shaft.

    My question is, the original bearing lasted 5 years, but the replacement only lasted 18 months. Are there any well known errors in the fitting of it that I might have done wrong? I screwed the new shaft to the drum, riveted the new bearing housing to the panel, put the bearing into the opening, fitted the drum, then plain washer, castellated washer & pin. I assumed it didn’t need lubrication.

    Thanks

    Chris

    February 14, 2009 at 2:43 pm #277362
    helo_75
    Participant

    you did everything right

    turn the bearing upside down while u still can

    February 14, 2009 at 3:12 pm #277363
    Chris_B
    Participant

    Re: TDL 30 rear bearing wearing out fast

    Thanks, helo_75. I turned the bearing upside down last week when it first failed – now I’ve fitted the new bearing. But I’d rather not have to keep replacing it every 18 months!

    Chris

    February 14, 2009 at 3:56 pm #277364
    helo_75
    Participant

    just the way they are mate… its common

    go buy a vtd and see how bad they are

    February 18, 2009 at 7:50 pm #277365
    cockney steve
    Participant

    Re: TDL 30 rear bearing wearing out fast

    It may be worthwhile lubricating a phosphor-bronze bush. sintered ones are highly porous and will “soak up” a fair amount.
    I have had success with auto-transmission fluid (“red oil” ) used for cars.

    Years ago, my employer banned “3 in 1 ” oil, as it gummed up the bearings in small motors that ran 24/7. i don’t know if it still has those additives that caused the gumming.

    If you added a small felt pad to feed the bearing, that would help,but remember that heat + airflow + fluff could lead to a potential fire if excess oil is around…..many a cotton mill burnt down as testimony to that!

    February 18, 2009 at 9:20 pm #277366
    helo_75
    Participant

    funnily enough, steve i was thinking about that just this morning, the older, smaller bendix dryers had a kind of ‘wear strip’ not sure what it was made of, but it basically sat between the drum shaft and the bearing.. lasted a long time too

    the answer of course is do what REAL engineers do, and use a proper bearing, capable of supporting that amount of pressure

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