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Recent content by nfldengr

  1. nfldengr

    Motor Vibration

    Electricpete, The motor in question is a Westinghouse 5010H 2 pole motor full load stampled speed is 3553 RPM. It would be valuable to take a high resolution look at the lower frequencies. I do have a question though in terms of the extent of slip speed as the motor is being shop tested...
  2. nfldengr

    Motor Vibration

    For MikeHalloran: I asked the same question about the end bells being swapped end for end and the shop adamantly said it was not the case. For spciesla: The way this motor is set-up is you actually have the ball bearing floating axially in the end-housing. There is a radial clearance...
  3. nfldengr

    Motor Vibration

    I'm still confused how you get misalignment when the machine is running uncoupled in a shop. Plus the housing and journal work was done in September and it passed a run test in shop so I’d be suprised if it were misalignment due to improper machining/fits. Only after are we changed out the...
  4. nfldengr

    Motor Vibration

    I apologize in advance for the long post. I have a 4160V, 650 HP Motor(AC,Ind.) which is experiencing some vibratory difficulties... History: Motor had initially wiped bearings (deep groove ball bearing which free float axially in the end housings), journals and the bearing housing...
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