Hi everybody i observed high speed

Question

Hi everybody i observed high speed

Hesam267 (Industrial)

(OP)

23 Sep 16 01:12

Hi everybody
i observed high speed compressor with high 7x (1x,2x,...,7x). machine semiopen impeller has 7 main blade too.
this is my question: is it any relation? and what can rise all x?
(x means 1rpm of rotor)

JJPellin (Mechanical) · Answer 1 · 2016-09-23 17:14:57

I would tend to associate multiple synchronous peaks (1X up to 7X) with mechanical looseness of some sort. If there is a raised floor between these peaks, that would support a diagnosis of looseness, as well. What type of machine is it?

Johnny Pellin

Hesam267 (Industrial) · Answer 2 · 2016-09-23 19:19:51

thanks.
its integral gear type. but bearings clearance and also bullgear and pinion backlash was checked and found OK.

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Hi everybody i observed high speed