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please check the attached file for bearing pictures http://files.engineering.com/getfile.aspx?folder=277b8c7e-ddf2-4aed-b2e9-80cd8578b9be&file=bearing_falure_pic.pdf

Dear John The bearing which you have pointed it's ball bearing please check section drawing

Ball bearing outer ring pic Pl comments and the wear pattern http://files.engineering.com/getfile.aspx?folder=86ff307f-36c8-4daa-a458-50b128d1fe44&file=image.jpeg

Yes if the end cover removed there is nothing to stop rotor sliding towards driven machine Pl check the attached video I have check the radial clearance of the rotor till 0.05mm rotor move with minimum pressure then rotor stops the movement then the hydraulic pressure was raised then we can...

hi is this centrifugal compressor with over hang impeller ? I had a same experience if its over hang compressor the shat movement has to check in both directions down and up. why don't measure the crush?

Hi The fan impeller side bearing has to be fixed axially by using locating rings and the motor side fan bearing has to be free axially to compensate the thermal expansion. simple way to fix the locate rings measure the bearing width (50mm) and the width of the bearing seating in bearing...

Dear All thanks for spending precious time with this issue I m not sure that motor shaft slides towards driven machine. if there is axial movement on the motor shaft and it creates excessive axial load on the ball bearing then the bearing failure should lead to damage to the balls runway or...

when the motor shaft rotates manually no movement found on the ball bearing. the movement force coming from the driven machine when the motor operates with rated load and RPM The thrust bearing wear pattern studied most of the housing and thrust bearing end cover step bearing seating area...

thanks to all your very useful posts and brain storming most of your assumptions are matching with mine. last year I have raised a modification proposal that too enclosed with this post please find the attachment. As Mr Muthu comments I agree that with cylindrical and ball bearing...

Thanks to all nice discussion, some of the pictures and vibration details are attached pl refer. this motor bearing dismantling is under progress http://files.engineering.com/getfile.aspx?folder=1afddca6-9705-461c-b071-4ab52b534c3c&file=motor_bearing_failure.pdf

hi , the motor has combination of ball bearing and cylindrical roller bearing on the drive end. only cylindrical roller bearing on the non drive end side. The motor running in decouple condition the axial vibration is higher side comparing with horizontal and vertical. The thrust ball bearing...