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Shaft deflection in API 610 7th Edition

thread407-38766

Shaft deflection in API 610 7th Edition

Shaft deflection in API 610 7th Edition

(OP)
I am looking for the maximum allowable shaft deflection under API 610 7th Edition. I understand that this is given for the shaft at the impeller, as opposed to 8th Edition which states a maximum deflection of 0.002 in. at the mechanical seals.

RE: Shaft deflection in API 610 7th Edition

I'm sure you will get a response from somebody familiar w/the 7th edition.  I wanted to make a point that a "shaft deflection calculation" is a warm fuzzy blanket for some consulting engineers(?).  A more meaningful "calculation" would be to calculate the maximum shaft angularity at the mechanical seal location.  From a seals point of view, a deflection of 0.002" can be good or bad- - -IT DEPENDS ON THE SHAFT ANGULARITY!

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