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Thread: Centrifugal Supercharger output shaft bearing and seal

  1. #1
    Junior SCH Member
    Join Date
    Jun 2011
    Posts
    8

    Centrifugal Supercharger output shaft bearing and seal

    Hi, I am in the middle of rebuilding my centrifugal head unit that uses a lip seal for the impeller shaft. After crunching some numbers, I am drawng a blank. From my calculations, the impeller shaft spins at a speed that there are no material in a lip seal package can support. I believe PTFE has the lowest frictional coefficient and the max speed that a PTFE lip seal rated for is 50m/s. My calculation is based on 4500 engine RPM, 8 inch crank pulley, 3 inch input pulley, 22.5 mm shaft diameter. For the bearings, I have not been able to find any 6204, 6205 radial bearings that is rated for 62000 RPM. Any help will be appreciated.

  2. #2
    SCH Owner Michael's Avatar
    Join Date
    Aug 2005
    Location
    The Motor City
    Posts
    1,367
    What supercharger are you rebuilding?

  3. #3
    Junior SCH Member
    Join Date
    Jun 2011
    Posts
    8
    Quote Originally Posted by Michael View Post
    What supercharger are you rebuilding?
    Procharger P1SC

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