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  1. Muhammad Mazher

    Bearing RCA

    Hello everyone, I need your guidance on an issue we are experiencing. In our industry, we encountered a bearing (Deep groove ball bearing 6319 ) failure in a motor driving a gear box. The motor is a 185 kw unit running at 1500 rpm. It is a non drive end bearing. We observed signs of electrical...
  2. Muhammad Mazher

    RCA of bearings

    @geesaman.d Yes these rollers were thrust supported.
  3. Muhammad Mazher

    RCA of bearings

    @Tmoose Fan was installed in 2010 and bearing were recently replaced 1 year ago. Coupling was according to OEM recommendation. No alignment done recently. No oil Change activity since last 10 months.
  4. Muhammad Mazher

    RCA of bearings

    @Tmoose Yes, 17.5 liters of oil being drained from the housing. Common housing for bearings. One more thing to note that it was a locating side bearing while the other one was non locating side.
  5. Muhammad Mazher

    RCA of bearings

    Also please look below picture of inner race. We tried a lot but it is stuck with shaft. Due to unavailability of proper tools, we decided to cut it.
  6. Muhammad Mazher

    RCA of bearings

    @All I am attaching some more pictures for your better understanding. I think in this case, there is a possibility of surface fatigue which accelerated due to low oil level. Total oil capacity is 20 liters but the oil we took from bearing block was 17.5 liters but oil color was satisfactory...
  7. Muhammad Mazher

    RCA of bearings

    @ electricpete, 3DDave , geesaman.d, Tmoose , TugboatEng Unfortunately we have no Vibration readings for this equipment. I took some new pictures after cutting the bearing. I saw some interesting findings. These pictures shows like there is some surface fatigue or spalling. Please look and...
  8. Muhammad Mazher

    RCA of bearings

    Hi everyone! I am seeking advice from experts regarding the root cause analysis for an incident at our petrochemical plant. Specifically, one of the critical blower fan's bearings on the coupling side seized, despite satisfactory oil level and condition. While one bearing remained operational...

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