MOORE FANS LLC, Marceline, MO 64658 Phone (660 ) 376-3575 FAX (660) 376-2909
Page 3
TMC-647-(Rev E) - 01/06
2.2 INSTALL HUB
2.2.1 FOR MANUAL HUBS INSTALLED ON QD BUSHING
SHAFT
STAINLESS
NUT
(Specially
Coated)
STAINLESS STEEL BUSHING
STUD
FAN HUB
FAN HUB
KEY
AIR
FLOW
SHAFT
HUB TUBE
2.2.2 FOR MANUAL STRAIGHT BORE HUBS INSTALLED ON SHAFT
HUB
TUBE
Q D BUSHING
BUSHING STUD WASHER
On Cast Hubs Only
(14", 20" & 24" Hub Diameters)
If the (3) stainless steel bushing studs are not already
installed in the fan hub, install them at this time. Hand-
tighten only.
Slip the bushing onto the shaft and check the key for
proper fit. Be sure the shaft is completely through the
bushing.
Carefully clean the bore of the hub and the outside of
the bushing with a clean, dry cloth. Use no lubricants in this
installation. Use of lubricants can cause hub breakage.
Do not clean or alter the lubricant coating on the hex
nuts.
Lift the hub by grasping the clevises or hub tubes. Do
not lift the hub by grasping the air seal.
Install the fan hub on the bushing with the studs
extending through the bushing flange. Place the stud nuts on
the studs and tighten the nuts alternately, keeping the pull
on all of them as nearly equal as possible while drawing the
hub onto the bushing until the bushing tightly grips the
shaft. Caution should be used to prevent the hub from
cocking on the bushing.
Tighten the nuts to the torque shown in the table at left.
Do not over-torque. Excessive torque can cause hub or
bushing breakage.
Clean the drive shaft, then raise the hub assembly by lifting
on the clevises or blade tubes. Do not lift on the air seal if the
air seal is installed on the hub.
Slip the hub onto the drive shaft so that the drive shaft
goes completely through the hub. Secure the hub firmly to
the drive shaft by tightening the 12 mm socket head set
screws already in the hub. Three are provided: One is
located over the shaft key and two more approximately 90
o
away from the key.
If the drive shaft is from above, use a positive retainer
plate or ring or drill indentations in the shaft to engage the
hub set screws to prevent the fan from dropping off the shaft
in the event that the set screws loosen.
Automatic Hub Only Without Air SealManual Hub Only Without Air Seal
FT-LBS
20
40
90
150
BUSHING
SIZE
SF
E
J
M
M-KGS
2.77
5.53
12.44
20.75
MAXIMUM TORQUE
INSTALLATION
To Next Page
Loading...