AboutBearings
ThebearingsfortheModelQ
Fansarecarefullyselectedto
matchthemaximumloadand
operatingconditionsofthefan.
Followingtheinstructionsinthis
manualwillminimizeanybearing
problem.Allfansshippedwith
bearingspre-lubricatedand
installed.Thegreaselinesare
alsofilledatthefactory.
Sincebearingsmayhavetobe
adjustedorremoved,thefollowing
generalinstructionsandsetscrew
torquesareprovided.SeeTable
10.
SealmasterSFT,MSF,SFandMSFTBearings
SeeFigures12and13.
1. Shaftmustbecleanandfree
fromnicksandburrs.The
bearingboreisgroundfora
slidingfitovertheshaft.
2. Lubricatetheshaftandmake
certainthesetscrewsareclear
ofthebore.
3. Slidebearingontoshaft-never
hammertheendsoftheinner
race.Setscrews(2)shouldbe
towardendofshaft.Ifnec-
essary to apply force use a brass
bar against the inner race only to
drift bearing into place.
4. Boltflangedhousingtosupport
andcheckfreedomofrotation.
SeeTable10fortorques.
5. Tightenself-lockingcuppoint
setscrews securely onto the
shaft. See Table 10 for torques.
QFNA-IOM-1 25
BearingService
Table10-TorquesforTighteningSetscrewsonSealmasterSFT,MSFT,SFandMSFBearings
BearingBore
Figure12—SealmasterBearing,SFT
Series
Figure13—SealmasterBearing,MSF
Series