Triangle Engineering of Arkansas FHI SERIES PANEL FANS Propeller Installation - Manual

INSTALLATION INSTRUCTIONS
For Sound Fighter Fan tM ProPellerS
equiPPed with SPlit taPer BuShingS
­
SeCtion i:
general inForMation
1. airFoil ProPeller and BuShingS
Sound­Fighter­Fans™­cast­aluminum­airfoil­
propellers­are­furnished­with­­split­taper­lock­
bushings­for­mounting­the­propeller­to­the­shaft.­­
When­properly­positioned,­the­bushing­grips­the­
hub­with­a­positive­clamping­action.­The­flange­is­
bolted­to­the­fan­hub­to­secure­the­fan,­and­when­
the­bolts­are­tightened,­the­tapered­surface­of­the­
split­bushing­is­compressed­around­the­shaft.
2. inStalling aSSeMBlY oF ShaFt
The­first­step­in­installing­a­tapered­bushing­
is­to­thoroughly­clean­the­shaft,­the­bore­and­
exterior­of­the­bushing,­and­the­tapered­bore­
of­the­component.­Nicks,­burrs,­dirt,­and­chips­
should­be­removed,­since­they­can­cause­a­loss­
of­concentricity­and­even­gripping­strength.­The­
housing­should­be­inserted­into­the­hub­with­it’s­
holes­matched­with­the­hub’s­holes.­The­cap-
screws­should­be­inserted­in­the­holes­that­are­
threaded­on­the­hub­side.­The­propeller­should­
then­be­mounted­on­the­shaft,­with­the­bushing­in­
place,­and­the­capscrews­tightened­to­the­torque­
values­shown­below.
3. noteS on CorreCt aSSeMBlY
A.­Bushing­barrel­and­bore­of­propeller­are­tapered­
-this­assures­concentric­mounting­and­a­true­
running­propeller.
B.­Capscrews,­when­tightened,­lock­bushing­in­
propeller.­Use­capscrews­threaded­full­length.
BuShing ­ diaMeter ­ length ­ torque
no. ­ ­ ­ (Ft.lBS.)
H ­ 1/4-20 ­ 1" ­ 6
­ P­ 5/16-18 ­ 1-1/4" ­ 13­
­ Q­ 3­/8-16­ 2"­ 2
­ SD­ 1/4-20­ 1"­ 6
­ SK­ 5/16-18 ­ 1-1/4" ­ 13­
Caution:­MAKE­SURE­CAPSCREW­
LENGTHS­MATCH­TRIANGLE­ENGINEERING’S­
RECOMMENDATIONS.­SHORTER­CAPSCREWS­
FROM­BUSHING­MANUFACTURER­ARE­DESIGNED­
FOR­CAST­IRON,­NOT­ALUMINUM.
C.­Bushing­is­split­so­that­when­the­locking­capscrews­
force­the­bushing­into­the­tapered­bore,­the­
bushing­grips­the­shaft­with­a­positive­clamping­fit­
-­this­will­withstand­vibration­and­punishing­loads­
without­being­loosened.
D.­Propeller­and­bushing­assembly­is­keyed­to­shaft­
and­held­in­place­by­compression­-­this­gives­
added­driving­strength.­The­use­of­an­optional­
key­for­securing­the­bushing­to­the­propeller­hub­
is­generally­not­required,­except­on­high­speed,­
high­torque­applications.­Contact­factory­for­
recommendations.
E.­Propeller­is­easily­removed­from­the­shaft­by­
inserting­and­tightening­two­of­the­capscrews­into­
the­tapped­holes­in­the­bushing­flange­-­this­forces­
the­bushing­loose­from­the­propeller­and­releases­
the­compression­so­that­the­entire­assembly­will­
slide­from­the­shaft.
Flanged­tapered­
bushing­bolts­to­hub.­
Extra­bolt­holes­are­
used­to­facilitate­
removal.­Flange­should­
not­be­hammered.