quote:the diameter to length ratio of the fan is large . Please tell me why we should go for two plane balancing in this case .
quote:Please confirm how did u perform the bump test with these readings.
quote:I have performed single plane balancing but never tried 2 plane balancing .Could u please give me the steps to perform 2 plane balancing .
if L/D is less than 0.5 and R.P.M is below 1000 then you can also perform single plane balancing.it would be helpful for you .
This thread is 12 years old!
But I did balancing our raw mill system air fan with single plane. This fan also have high vibrations in both DE and NDE
NDE : 5.6mm/s
If you have a question or new problem, then please start a new discussion and provide as much data as possible.
Yes Walt I just want to know how we will deceide either this fan required single plane or two plane. Because I am working in cement plant and I did all balancing here by single plane..i never tried two plane so please share your knowledge...
Can you provide more information about the fan? Have you tried single plane balance on this fan, and it was not successful? If you have not done a 2-plane balance, then I suggest practice on a small machine. I use a bench grinder with machined aluminum disks in place of the abrasive wheels for conducting training. Why take a long time or make a serious mistake on a large process/production fan?
The fan is raw mill system air fan.
High horizontal vibration is observed with 1*x dominant. Cross Phase difference is 95 at DE bearing. So we suggest to do dynamic balancing and we got success also by single plane method. I just want to know the exact condition or situation when we have to perform two plane..