You're welcome! I'm glad you found the video informative and helpful. Your kind words mean a lot. If you have any more questions or need further information, feel free to ask. Thanks again for your support!

Thank you for your kind words! I'm glad you found the information concise and informative. If you have any more questions or need further details, feel free to ask!

You are absolutely correct. Loose bolting and soft foot conditions can indeed lead to high amplitude vibrations at times. Thank you for your feedback!

Thank you!

Thank you for your feedback! I'm glad you found the video useful. If you think it could benefit your colleagues and engineering friends, please consider sharing it with them. Sharing knowledge helps us all grow together!

Yes and it should move in same direction as rotation, whereas for a seal rub causing bowing phase change goes against rotation as explained by the great late Prof den Hartog in his book "Mechanical Vibrations".

@@MrFRANKOK you are right. Phase rotation is different in both cases. I have seen both of them happening at different compressors in our plant. Thank you for sharing the reference of the book, I will definitely check.

Thanks for sharing that information! :)

Excellent inquiry! The choice of balancing grade is indeed contingent upon the specific requirements of the machine being designed. For high-end, long-lasting machines where reliability is paramount, opting for a tighter balancing grade is often preferred. In numerous cases, a G2.5 grade strikes the right balance between precision and cost-effectiveness. Additionally, I recommend referencing Part 24 video for further insight into distinguishing between rigid and flexible rotors. Understanding this distinction is crucial as it significantly impacts the balancing process. Rigid rotors, typical in simpler machines, generally follow a more straightforward balancing procedure. Conversely, flexible rotors necessitate a more intricate technical evaluation to achieve optimal balance. Thank you for raising this pertinent point!

Thank you so much for your kind words! I'm glad you found the video helpful. To get the time response and orbit of the rotor at 3:14 in the video, you can use two displacement probes (such as Bently Nevada's Proximity Sensor - 3300 XL Proximitor Sensor) and record the signal from the DAQ (Data Acquisition Systems). I'll also consider making a dedicated tutorial on this topic in the future to provide more detailed guidance. Stay tuned for updates, and feel free to ask if you have any further questions!