From the vibration pattern that we received, an increased level in 3xGM shows the signs of wear but cannot be conclusive Also the 1x sidebands are present at 3xGM even though smaller. The pressure over the filter has steadily increased that also could indicate the same.
What is a little strange is that MBK10CY005 and MBK10CY007 does not show the same level even as they are just positioned centimeters from each other.
The spectrum analysis from these transducer would also be interesting.
Is all data for the vibration monitoring taken at the exactly same time? Has the load and speed during the readings also been recorded?
Have time waveform data also been investigated?