quote:Originally posted by tarun:
One Oxygen compressor motor vibration is increasing along with the time & getting tripped at 100 micron. When we are starting the motor vibration is very less around 10 micron but with the time Drive End side Vertical vibration as well as NDE side horizontal vibration is getting increased. I have taken spectrum
Drive end side at Horizontal direction 1X, 2X, 3X, 4X available & same for Vertical direction also only amplitude is high for Vertical.
Non Drive end side Vertical direction upto 4X available & Horizontal direction only 1X.
Ihave checked probable looseness factor but could not found any abnormality.
Blue matching checked for the Journal bearing with shaft as well as with the bearing housing.
Interference / clearance checked for the bearing with the bearing housing. It is OK.
Can anybody help me?
Resonance may be the cause of Vibration. Please check for the same by varying the speed if possible, The vibrations should reduce at certain speed if resonance is the cause.