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IndustryArena Forum > MetalWorking Machines > Cincinnati CNC > Re-installing crusty old Deublin rotary union?
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  1. #1
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    Re-installing crusty old Deublin rotary union?

    Hello again everyone,
    My machine "has" TSC and came with a crusty un-installed Deublin rotary union. It spins freely but I am skeptical of the condition of the seals due to the fact that it is no longer installed. I would like to re-install it to use the spindle air blast, at least. What is the worst-case scenario if the seals are bad and I try to run through-spindle coolant? Is the spindle cartridge water-tight from the top? Or will I bathe my spindle bearings in coolant?

    I found the edge protector and plate I need on the MAG site, but I sure won't be shelling out $750-$1,500 for another Deublin any time soon.

  2. #2
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    Dec 2006
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    Re: Re-installing crusty old Deublin rotary union?

    What is the model of the machine and what year is it???

    MIKE CNC Machine Services INC | Cincinnati Milacron MachinesCNC Machine Services

  3. #3
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    Re: Re-installing crusty old Deublin rotary union?

    1999 Arrow 1000

  4. #4
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    Re: Re-installing crusty old Deublin rotary union?

    what is the size of the rotary union on your machine. Also have you thought
    about rebuilding the rotary union .
    Deublin does not make the ceramic seals or bearings,

  5. #5
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    Re: Re-installing crusty old Deublin rotary union?

    Johnd,
    I believe the one that i have is this one https://www.deublin.com/Products/1109-053-188 , but I will have to verify. I have thought about rebuilding! I called Deublin to get a quote on a rebuild and they said my model was not serviceable. I have rebuilt turbos before and it seems like it should be the same sort of process.

  6. #6
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    Re: Re-installing crusty old Deublin rotary union?

    If you would not use coolant through the spindle, I would not install the union. If the union leaks the coolant goes down in the tool un-clamp section and causes problems. The coolant would also get on the spindle belt. Why take the risk.

    MIKE CNC Machine Services INC | Cincinnati Milacron MachinesCNC Machine Services

  7. #7
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    Re: Re-installing crusty old Deublin rotary union?

    Mike,
    Makes sense! I don't want that one bit! I might hijack the TSC coolant valve solenoid and use the M27 to run through spindle air instead. I can cap the TSC feed just for extra safety.

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