Alignment Free Assembly and Installation - Welded Design
Introduction
The Alignment Free Drive design consists of a shaft mounted
drive, bell housing, motor adapter plate, torque arm, motor
and coupling. When assembled, the bell housing, motor
adapter, and motor locate off registers, resulting in alignment
of the motor and gear drive shafts. Therefore, no additional
alignment is required for the high-speed coupling.
Assembly Instructions
The bell housing is fastened to the drive’s high speed end using
cap screws in tapped holes on that face, (see Table 1 for size
and torque). The bell housing will locate on the bevel head of
the drive. Read instructions provided with high speed coupling
prior to assembly.
Shaft Fan (Optional)
A shaft fan is provided on the high speed shaft for drive
requiring a shaft fan. The fan must be assembled to the drive
prior to mounting any type of coupling. Assemble the fan to
the hub, apply Loctite 242 threadlocker or equivalent to the
fasteners and tighten. Caution: over-tightening can crack the
fan. Position the fan on the high speed shaft to the position
indicated in Table 2 (See Figure 1). Apply Loctite 242
threadlocker or equivalent to the set screw and tighten.
Assemble the mounting shroud and fan guard inside the bell
housing. Mounting shroud and fan guard cannot be
assembled outside the bell housing. Install all fasteners loosely
to ensure all fastener holes are aligned. When all fasteners
are loosely installed, tighten starting with the mounting shroud
to bell housing fasteners and finish with the fan guard fasteners.
Rotate the high speed shaft by hand to verify there is no
interference between the fan and guard.
Fluid Coupling
Location of the fluid coupling on the high speed shaft of the
drive is determined by the provided shaft spacer. Install the fluid
coupling on the high-speed shaft of the gear drive per fluid
coupling instructions.
Once the fluid coupling is installed, the motor adapter plate
can be mounted to the bell housing, also being located by a
register. Measurements must be taken to accurately position the
motor half of the coupling hub on the motor shaft. First,
measure the distance from the motor mounting face to the end
of the motor shaft, (A). Then measure the distance from the
motor adapter plate face to the hub on the fluid coupling, (B).
Finally measure the distance from the hub flange to the hub
end, (C). The desired gap can be found in Table 3, based on
coupling size.
Calculate the hub protrusion:
Protrusion = (A + Gap) – (B + C)
If the calculated protrusion is a negative value, the hub
overhangs the shaft by that amount. (Figure 2)
Once the hub is correctly located on the motor shaft, the motor
Rexnord Industries, LLC, Geared Products, P.O. Box 492, Zip 53201-0492
168-056
3001 W. Canal St., Zip 53208-4200, Milwaukee, WI USA Telephone : 414-342-3131
(PN 2128959) February 2009
Fax: 414-937-4359 e-mail: [email protected] web: www.rexnord.com
NEW
Falk™ Drive One™ Model C Conveyor Drives
•
Appendix C
Type D Series
•
Sizes M1220 & M1230
(Page 11 of 16)
TABLE 1 — Tightening Torques
DRIVE
SIZE
Bolt
Size
Tightening Torque
N-m
lb-ft
M1220
M24
725
535
M1230
M24
725
535
TABLE 3 — Coupling Gap
Fluid Coupling
Size
Tschan Hub
Size
Gap
mm
Inch
1480HFDD
260
7.5
0.295
1584HFDD
300
8.4
0.331
1660HFDD
360
9.0
0.354
SHAFT
PROTRUSION
FAN HUB
DRIVE
FAN
MOUNTING
SHROUD
FAN
GUARD
FIGURE 1
DRIVE
BELL
HOUSING
MOTOR
ADAPTER
PLATE
COUPLING
HUBS
MOTOR
MOUNTNG
FACE
MOTOR
SHAFT
SPACER
PROTRUSION
C
B
A
FIGURE 2
TABLE 2 — Fan Hub Location
DRIVE
SIZE
Shaft Protrusion
mm
Inch
M1220
205
8.07
M1230
205
8.07
