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  1. #1
    richrxp's Avatar
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    Ceramic Bearings Safe In A Supercharger?

    Ceramic washers are not ok in a supercharger.
    Are the ceramic bearings break proof,i know its not the same as the washers,but i'm a bit afraid putting anything ceramic in my supercharger.
    Why don't stick with the metal ones?


  2. #2

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    Personally I'd like to see someone make a good arguement for ceramics, as I question taking out ceramic washers and adding ceramic brgs. The grit that evolves from failure is just as distructive.

  3. #3
    Site Admin Green Hulk's Avatar
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    Ceramic bearings are used in the top products from supercharger and turbocharger manufacturers so they are nothing new.

    Some key points about ceramic bearings

    • Ceramic ball bearings are 60% lighter in weight and are rounder than steel balls resulting in 40% less friction and heat.

    • Ceramic balls have an improved surface finish compared to steel balls and because of these differences ceramic bearings run cooler and have a lower amount of thermal expansion.
    • Steel ball bearings are not perfectly round and actually have tolerance variations between 50 and 60 millionths of an inch, where a ceramic ball will only have 10 millionths variation so they run truer in the race.

    • All of these benefits enable ceramic bearings to out live steel bearings 5 to 1. In identical running conditions, the ceramic balls show less than 10% of the wear of steel balls.
    • The ceramic bearings will hold a tighter tolerance longer than that of steel bearings resulting in less runout and walking of the shaft which results in inefficiency and damage to the supercharger impeller.
    Quote Originally Posted by richrxp
    Are the ceramic bearings break proof?
    Nothing is break proof! Have ceramic bearings failed? Yes, they sure have and for varrying reasons. (improper installation, bearing bosses mis machined by the factory causing mis alignment, faulty bearing)

    The ceramic bearing failures we have seen are minimal compared to the stock bearings that fail.

    Ceramic bearings are superior to traditional steel ball bearings PERIOD!!!

    Its a big misconception that when a ceramic bearing fails it crumbles and turns to dust. This is not true. The ceramic bearings we have seen fail were due to the cage failing. The cerbic balls are tough as nails. You can try and pound one with a sledge hammer or crush it in a vice. It's not going to happen!

  4. #4

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    Jerry, I really like the last paragraph. Do you have some ceramic balls you could send? I'd like to see them.

  5. #5
    Site Admin Green Hulk's Avatar
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    Jawz, PM me your address

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