Brochure

166
®
Troubleshooting Guide For
BrowningMountedBearings
Noise (high pitch)
Misalignment.
Correct alignment. Replace unit with a Browning
self-aligning bearing.
Noise (low pitch)
Bearing brinelled. Replace bearing.
Noise (intermittent rumbles and rattles)
Too much shaft to bearing bore clearance.
Use proper size shaft. Replace bearing with correct
size unit.
Dirt in bearing.
Purge bearing with grease. If necessary, replace
unit.
Loose machine parts Tighten machine parts.
Bearing gets excessively hot
First start after relubrication (grease
redistribution).
Allow machine parts to cool and restart.
Over lubrication. Use less lubricant.
No lubricant. Add lubricant.
Excessive load.
Check bearing loads. Replace with a larger unit. If
thrust load is caused by shaft expansion, an
expansion type bearing should be used.
Bearing located near a heat source.
Shield the bearing or move it away from the heat
source.
Bearing over misaligned. Correct alignment.
Excessive speed.
Check bearing ratings and speed limitations.
Replace with a unit that is capable of high speed
operation.
Excessive vibration
Unbalanced machine parts. Balanced machine parts.
Loose machine parts. Check and tighten machine parts.
Improper shaft to bearing bore t. Check shaft size. Replace unit with correct bearing.
Bent shaft. Straighten or replace shaft.
Bearing brinelled. Replace bearing.
Shaft binds when rotated
Bent shaft. Straighten or replace shaft.
Misalignment.
Correct alignment. Replace unit with a Browning
self-aligning bearing.
Dirt in bearing.
Purge bearing with grease. If necessary, replace
unit.
Rotate interference. Check clearance of rotating parts.
Wear of shaft steel
Too much shaft to bearing bore clearance. Correct shaft t. Use new shaft.
Poor shaft nish.
Use new shaft. Smooth turn grind shaft to next
smaller standard bore and install new bearing.
What Happened Probable Cause What To Do