7
Installation
Torque hub assembly bolts
11
according to the following table:
Fan Diameter
inches
Flange Type
Bolt Type
Bolt Torque
N·m
ft·lb
84" to 96"
Type 115
M16 cl. 8.8
230
169
M16 cl. A4-70
126
93
M16 cl. A4-80
168
124
108" to 168"
Type 190
M20 cl. 8.8
447
329
M20 cl. A4-70
246
181
M20 cl. A4-80
328
241
3––Hub into driveshaft installation (Figure 2).
• As for the hub with cylindrical bore, the hub is bored to attach
directly to the drive shaft.
Coat the output drive shaft with a thin layer of silicon grease.
If a space ring
10A
is supplied, drive it into the drive shaft until it
comes in contact with the drive shaft shoulder.
Drive the hub with cylindrical bore into the drive shaft until it comes
in contact with the drive shaft shoulder (or space ring shoulder if
supplied).
Never power the drive shaft with special washer
16
and the retain-
ing bolt
17
missing or loose.
• As for the hub with tapered bushing hole, be sure drive shaft,
bushing and hub bore are not greased. Slide the bushing into the
drive shaft to your design position.
Position the hub core over the bushing taper; insert bushing screws
through the bushing flange into the threaded hole in the hub coupling;
torque bushing screws according to the following table:
Bushing Type
Screw Torque
N·m
ft·lb
Q1 and Q2
40
29
R1 and R2
40
29
Warning