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Fan Shaft Bearings
Two pillow block ball bearings support the fan shaft. Each bearing is equipped with a
lubrication fitting and a slinger/locking collar to keep out moisture. Extended lubrication
lines are available as an option.
Inspection & Maintenance
• Only lubricate the bearings with a manual grease gun or BAC’s optional Automatic
Bearing Greaser. Do not use high-pressure grease guns since they may rupture the
bearing seals.
• Only lubricate the bearings with one of the following compatible water resistant
greases which are suitable for ambient temperatures ranging from - 65ºF (-53.9ºC) to
+250ºF (121.1ºC).
–
Amoco - Rycon Premium #3
–
Chevron - SRI
–
Citgo - Polyurea MP2™
–
Conoco - Polyurea 2™
–
Exxon - Polyrex
®
EM
–
Exxon - Unirex N™
–
MobilGrease
®
- AW2
–
Shell - Gadus S2 V100 3
–
Shell - Gadus S3 T100 2
–
SKF - LGHP2™
–
Unocal 76 - Unilife Grease™
• Lubricate the bearings as follows:
–
Initial Start-up:
Normally, no lubrication is required since the bearings have been
lubricated at the factory prior to shipment. However, if the unit has been stored at
the job site for more than 1 year, all fan bearings should be lubricated with new
grease before initial operation.
When lubricating, purge the old grease from the
bearing by gradually adding grease until a bead of new grease appears at the seal on
the underside of the bearing.
–
Seasonal Start-up:
Purge both bearings with new grease prior to start-up.
–
Operation
: Purge bearings with new grease every three months while in operation.
–
Extended Shutdown:
Purge bearings with new grease prior to any prolonged storage
or downtime.
NOTE:
List of brand names is for
identification only and are not
exclusive recommendations.
Detailed Component
Maintenance
Procedures
Fan Shaft Bearings
Inspection & Maintenance
heat Transfer Section
Fill & Drift Eliminator
Water Distribution System