Made One Of These Today

Discussion in 'General Chat' started by Metalman, Feb 15, 2011.

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  1. Minidave

    Minidave Well-Known Member
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    Way past my pay grade.....:Thumbsup:
     
  2. BRG_Paul

    BRG_Paul Active Member

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    If I don't get this working by the end of the week ... It may be above mine too....
     
  3. DneprDave

    DneprDave Well-Known Member
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    We use roller bearings on ship's turbochargers that are as big as the pump in the photo. But they have their own lubricating system using old fashioned dino oil rather than the oil in the media that is being pumped.

    They run for weeks at a time at around 7000 rpm. We overhaul them every couple of years based on hours run, in a preventative maintenance program.

    Dave
     
  4. minirab

    minirab Well-Known Member

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    You said it!
     
  5. Minidave

    Minidave Well-Known Member
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    Must be one hell of a big refrigeration plant or freezer or building to cool to require a pump that big, based on your location I think I know who you work for BRG Paul... :biggrin5:
     
  6. Metalman

    Metalman Well-Known Member
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  7. BRG_Paul

    BRG_Paul Active Member

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    #407 BRG_Paul, Apr 14, 2014
    Last edited: Apr 14, 2014


    These particular vapor compressors will run for at least one solid year of continuous duty at a stretch and also have a required 80,000 hours minimum service life between overhauls. The bearing parameters are...110mm shaft size / 12,000 RPM / 41,000 newton (9000 Lb) dynamic load. There isn't a rolling element bearing out there that comes anywhere close...not even ceramic bearings. The shaft size required to support the gear load results in rolling element bearings that are simply too large to tolerate the speed. Rolling element bearings also have a noise signature that is unacceptable too. (We really don't like to be heard on sonar) Ball bearings are not well suited for MIL-S-901C Shock testing either. Hydrodynamic fluid film bearings handle the load and speed without noise or L10 life issues common to rolling element bearings.



    - Paul
     
  8. BRG_Paul

    BRG_Paul Active Member

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    Well.... No, but they are a customer. And so is Jack Daniels, Coors, Anheuser Busch,... (My favorite food groups.). We do process cooling as well as comfort cooling for a wide variety of applications...

    135 year old company......South Central PA.
     
  9. Metalman

    Metalman Well-Known Member
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    It beat me.... But not by much...My business is 129 years old...:D
     
  10. Metalman

    Metalman Well-Known Member
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    If you have ever been to any the Graeter's ice cream shops.....

    Well.... You've touched me...:eek:

    I make the custom door pulls for their entrance doors.....:D

    These will be shipping out today to one of their new locations.....:Thumbsup:

    [​IMG]
     
  11. Crashton

    Crashton Club Coordinator

    Jun 4, 2009
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    You are an artist! :Thumbsup:

    I think you need to do a gallery show of your work. :yesnod:
     
  12. Metalman

    Metalman Well-Known Member
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    Then I would need to make finger sandwiches and horseydors...:D
     
  13. Dave.0

    Dave.0 Helix & RMW Powered
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    Nope just Donuts.....:donut1:
     
  14. Metalman

    Metalman Well-Known Member
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    Here is the Graeter's ice cream shop in the town where I live... It was the first location that starting sporting my handles....:D

    The front entrance has a double door.... It's hard to see but they are on there...

    Oh.... And they make great ice cream....:drool

    [​IMG]
     
  15. agranger

    agranger MINI of the Month June 2009
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    I'm sporting handles from ice cream shops as wel... oh. You mean you MADE the handles. In my case, the ice cream made the (love) handles. :blush2:
     
  16. BRG_Paul

    BRG_Paul Active Member

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    Bearings modified.... Dynamometer testing complete. The first of 4 shipped finally today.
    You can thank your government for the "Hulk" green primer.

    [​IMG]

    [​IMG]
     
  17. Minidave

    Minidave Well-Known Member
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    Whadja hafta do to get it in spec?
     
  18. BRG_Paul

    BRG_Paul Active Member

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    #418 BRG_Paul, May 15, 2014
    Last edited: Jun 8, 2014

    I opened up the journal bearing clearance by .004" on the diameter for the pinion and gear bearings. Shortened one pinion bearing to achieve L/D of 0.8. Added a hydrodynamic pocket to the unloaded section of each of the two low speed journal bearings ... Added a second drain port to the low speed forward thrust bearing. And increased the size of the primary scavenge ports of both the high speed and low speed thrust bearings...

    It took a bit work ... and I'm glad it is behind me now. Whew!
     
  19. Dave.0

    Dave.0 Helix & RMW Powered
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    HULK TURBO MAD, make SUPPER MAD BOOST. :cryin:

    HULK TURBO SMASH puny turbos.:nonod:


    Nice work Paul.:Thumbsup:
     
  20. BRG_Paul

    BRG_Paul Active Member

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    ^^^^. LOL.....
     

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