I have a problem with a dominant velocity peak at 6 times the rpm. What symptom does this indicate. This peak is on the NDE of a 400 kW Booster fan. The fan uses journal bearings. The DE of the fan shows 2 times rpm vibration but on the motor DE there is no indication of 2 times which would...
Hello everyone.
I have a problem with analysing vibration data with regard to "Crest Factor". All other measurements (Overall vibration, velocity and acceleration) seem to be well below the alarm limits. BUT when looking at the Crest Factor, its above the limits. These measurements were taken...
Can anybody help me with the procedure of carrying out a 4-Run Balancing Method using Mils/sec as the vibration parameter. I am only familiar with using Mils instead. Also, please give me the equations for calculating the correction mass
Can anybody help.? I am experiencing a repetitive imbalance problem on a two stage Booster Fan. We call experts to come in and they perform balancing (on the Impeller) and the following week the problem comes back again. I have been suspecting the Flue-gas. Currently the Bag-Filters are worn out...
