MISALIGNED BEARING

• Vibration symptoms similar to angular misalignment
• Attempts to realign coupling or balance the rotor will not alleviate the problem.
• Will cause a twisting motion with approximately 180 deg phase shift side to side or top to bottom

OTHER SOURCES OF HIGH AXIAL VIBRATION

a. Bent Shafts
b. Shafts in Resonant Whirl
c. Bearings Cocked on the Shaft
d. Resonance of Some Component in the Axial Direction
e. Worn Thrust Bearings
f. Worn Helical or Bevel Gears
g. A Sleeve Bearing Motor Hunting for its Magnetic Center
h. Couple Component of a Dynamic Unbalance