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  • 1.  Balancing AIR SEPARATOR ROKS 37.5 Vertical Mill

    Posted 01-17-2024 10:51
    Edited by manuel ortiz 01-17-2024 10:56
    Dear All
    We request your reference support for Vertical Cement Mill Separator Rotor Balancing.
    In the images, you can see the details of the facilities
    We hope you can share your experiences.

    We have installed new blades, and therefore, we believe that we have caused some increase in vibrations
    1.8 mm/ss They are not high, but they are looking to lower them.

     add some images,

    Stay in touch, and we share any necessary information
    We have a new analyzer, 2140, that we want to use 100%

    It shows the installation of Transmission Housing and Separator Rotor Air Flows
    Separator Rotor schematic
    Bearing Arrangement
    Separator Rotor with weight of 5.5 ton



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    Manuel Ortiz
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  • 2.  RE: Balancing AIR SEPARATOR ROKS 37.5 Vertical Mill

    Posted 01-18-2024 04:14

    Goo day Manuel,

    What was the level before the blade replacement.

    Now you have 1.8 mm/s. This level is already good. It will be difficult to get better for this type of equipment.

    Regards

    Serge



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    Serge Borrell
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  • 3.  RE: Balancing AIR SEPARATOR ROKS 37.5 Vertical Mill

    Posted 23 days ago

    Dear Serge,

    The Vibrations are Low if we test the separator with the mill stopped.

    When the Mill is in operation, the vibrations have reached levels of 12 to 13 mm/s
    It is certain types of Cement when the Speed is the highest 200 RPMs in the Rotor.



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    manuel ortiz
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  • 4.  RE: Balancing AIR SEPARATOR ROKS 37.5 Vertical Mill

    Posted 22 days ago

    It seems that the high vibration is related to the load and rpm for a "certain type of cement".

    The load probably is due to additional forces of a type of cement.

    Or, at the same load, the vibration will decay as the rpm decreases.



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    Jose Castellanos
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  • 5.  RE: Balancing AIR SEPARATOR ROKS 37.5 Vertical Mill

    Posted 22 days ago

    Jose

    Your comments are correct.

    Likewise, the Motor kW Power Increases with Increasing RPMs on the Rotor

     

    Saludos /  Best Regards

     

    Manuel E. Ortiz O.

    Mobile: +52(614) 1959494

    Direct: +52(614) 4423100 x3364

    Ingeniero de Proyectos & Asesor en confiabilidad

     






  • 6.  RE: Balancing AIR SEPARATOR ROKS 37.5 Vertical Mill

    Posted 21 days ago

    In such a case the parts that are playing this relatively high speed and load vibrations are:

    • Coupling: all set up.
    • Bearing: check the spring pressure for coupling bearings. How are these bearings preloaded? Do the bearings need to be changed?
    • Thermal expansion growth: is it the shaft? when heated, you don't want to overload the bearings.


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    Jose Castellanos
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