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Vgarzani, I am only thinking of doing some basic analysis (either FEA or manual calcs) to determine resonant frequencies to see if there are any resonances in the operational frequency spectrum - I'm sure that there are resonances. I agree that there are many variables that will affect the...

Alex, Sorry that I have not responded before now - rather busy with other stuff! Could you tell me what you mean by "sum of the equations before integration"? What should be integrated? Thanks a lot. Alasdair.

Alex, Do you have any further details about the pendulum calculation as I'm not sure what you mean? When you say to distribute the stiffness, do you mean that I simply divide it by the number of balls in the bearing? Thank you. Alasdair.

I have already posted this question on the "Bearing design, manufacture and maintenance Forum" -------------------------- I would be grateful to get some ideas for the simplest way to calculate the vibration/frequency response for an azimuth slew bearing. The bearing is quite a large...

I would be grateful to get some ideas for the simplest way to calculate the vibration/frequency response for an azimuth slew bearing. The bearing is quite a large slew bearing which has a payload of 155kg with a defined C of G wrt the bearing. The bearing has ball bearings in a wire race. The...