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  • 1.  vibration analysis fault pump with shockpulse

    Posted 04-28-2023 08:45
      |   view attached

    1) we taken reading but fault kindly information required on data sheet. (hydrualic pump bearing oil lubrication type)
    2) bearing shock pulse calculation required kindly hello dbm/dbc.



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    vigneshpillai T
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    Attachment(s)

    docx
    report.docx   149 KB 1 version


  • 2.  RE: vibration analysis fault pump with shockpulse

    Posted 04-29-2023 19:45

    Shock pulse measures ultra high frequency responses to an input, typically in a range above 30KHz. This is usually representing a very early stage bearing defect. Its presence in a single point is not trendable. However, the bearing fault frequencies and their harmonics will provide verification of either the presence or non-presence of a bearing defect. These can be obtained from the bearing manufacturer if you know the manufacturer and bearing number. Overlay the fault frequencies (BPFO, BPFI, BSF, and FTF) over the data in the FFT to see if the data displayed is a bearing. Follow the data and not opinion.



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    Jim Carrel
    COO
    Forum Reliability, Inc.
    Fate TX
    2068928074
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  • 3.  RE: vibration analysis fault pump with shockpulse

    Posted 05-01-2023 13:41
      |   view attached
    Based upon value bearing data hz to match for fault or good condition  kindly clarify 






  • 4.  RE: vibration analysis fault pump with shockpulse

    Posted 05-01-2023 15:41

    The vibration frequency associated with the components of a rolling element bearing are based on a calculation which includes variables like rolling element diameter, number of rolling elements, the cosign of the contact angle between the rolling element and the bearing race, etc.. This can be calculated in Hz, cpm, orders, etc.

    Each bearing fault frequency is calculated from a specific formula, where only the bearing dimension and physical characteristics (which can all be known) are the variables.

    Bearing manufacturers have published these frequencies and they are many times preloaded into vibration analyzer firmware and associated software..

    If the shaft speed is known, the exact bearing frequency can be overlaid onto the FFT. When the outer race defect frequency, for instance, is over laid (BPFO), and it aligns with peaks in the FFT, then there is an outer race defect. If none of the bearing frequencies align, then the fault is not a bearing and further diagnostics are required.

    Calculatable frequencies can display defects in the outer race, inner race, fundamental train (cage), and rolling elements.



    ------------------------------
    Jim Carrel
    COO
    Forum Reliability, Inc.
    Fate TX
    2068928074
    ------------------------------



  • 5.  RE: vibration analysis fault pump with shockpulse

    Posted 05-01-2023 23:38
    Thank you sir now am understand.
    1)  Display of value frequency of bearing was defects am right.
    2) shock pulse any calculation.






  • 6.  RE: vibration analysis fault pump with shockpulse

    Posted 05-02-2023 02:30

    Shock pulse reading with acceleration reading uploaded



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    vigneshpillai T
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    Attachment(s)

    pdf
    shock pulse.pdf   132 KB 1 version
    pdf
    acceleration.pdf   204 KB 1 version


  • 7.  RE: vibration analysis fault pump with shockpulse

    Posted 05-02-2023 08:26

    What is the bearing manufacturer's name? What is the bearing number?



    ------------------------------
    Jim Carrel
    COO
    Forum Reliability, Inc.
    Fate TX
    2068928074
    ------------------------------



  • 8.  RE: vibration analysis fault pump with shockpulse

    Posted 05-06-2023 07:58
    image.png

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    Regards,
    T.VIGNESH





  • 9.  RE: vibration analysis fault pump with shockpulse

    Posted 05-04-2023 13:33

    To find bearing frequency data quickly you should try The Bearing Expert. This is the largest independent bearing database with bearing fault frequencies for top 100 major manufacturers. You will see all vibration data for all manufacturers on one single part number search for that type and size bearing. Excellent snapshot view of bearing frequencies across manufacturers. Bearing Expert Free Trial Bearing Vibration Library



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    Sue Martini
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  • 10.  RE: vibration analysis fault pump with shockpulse

    Posted 08-25-2023 14:10

    When doing your analysis, The Bearing Expert bearing vibration frequency database will save you a great deal of time. Hundreds of thousands of unique bearing part numbers for over 100 major manufacturers. You do not need to go to manufacturer websites and navigate catalogues. Just enter your bearing number and we provide all bearing vibration data for ALL bearings that match size and type. It is quick and easy and our user's login daily to grab bearing data they need. Try it. https://sourceindex.com/trial/



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    Sue Martini
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