I have a shaft that I suspect may have an eccentricity problem, and I am wondering if there is a procedure for checking for eccentricity with a strobe light. It is a three piece shaft through a screw pump. We could use a dial indicator on the straight stubs at the ends, but the centre section with the screw can't be measured that way. Have you ever checked for eccentricity using a strobe? How did you go about it and were the results helpful? Thanks!
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