Skip to main content

I interpretted "What does it mean..." as "How would you diagnose it"

If so perhaps op can share details.
Are you talking about 1/2x motor showing up on fan?... or coupled machine with 1/2x showing on both motor and fan?

Machine details
What type bearings? What type housings? What type coupling? Horizontal? Anything interesting about the support (does 1/2x show up near bottom/support of the machine? )

vibration signature understanding of 1/2 X is sub harmonic related to shaft rubs at the journal or bearing bush due to misalignment, excess wear down, lubrication failure etc.,

if 1/2, 1.5, 2.5 ... son on referred to looseness of the bearings and shaft where multiple journals used.

appreciate if any other specialist make any references on this post.

Add Reply

Link copied to your clipboard.