Lubrication System And Sleeve Bearings - ABB AMA Series Manual

***Following chapter for bearing type: Sleeve bearing

8.1.2.2 Lubrication system and sleeve bearings

***Following chart for bearing type: Sleeve bearing with self lubrication
Experienced
malfunction
3BFP 000 050 R0101 REV E
Trouble shooting
Lubrication system and sleeve bearings
Possible cause
Low oil level
Insufficient lubrication
Unsuitable oil quality
Incorrect oil change period
Oil quality is reduced
Faulty coupling or mounting
Excessive axial load
Machine misalignment
Incorrectly assembled bearing
Excessive amount of oil
Oil impurities
Bearing currents
Complete bearing failure
Damaged bearing shells
Normal wearing
Operating speed too low
Faulty temperature detector
Faulty instrumentation
Damaged or worn-out bearing seals
Rotating equipment nearby
External vacuum
Pressure compensation failure
Internal over pressure
Damaged machine seal
Poor oil ring or disc operation
Foreign matter inside the bearing
Manual for Induction Motors and Generators
self lubrication
Check bearing for leakage, add oil
Check ABB oil recommendations
Clean bearing and change oil
Check coupling, mounting and alignment
Realign machine
Verify correct bearing assemblage and adjustments
Clean bearing and add correct amount of lubricant
Change oil, check bearing condition, replace bearing shells
Restore bearing insulation, replace bearing shells
Replace bearing parts
Replace bearing shells
Check the operating speed range of bearing
Check bearing temperature measurement system
Replace bearing seals
Check pressure levels, relocate rotating equipment
Remove cause for internal over pressure
Replace or repair machine seal
Open bearing and adjust operation
Clean bearing and check seal condition
Corrective action
Trouble Shooting - 93