Rexnord Falk Quadrive A Series User manual

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk®Quadrive®Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 1 of 53)
TABLE OF CONTENTS
Introduction ....................................2
Drive Identification ...............................3
Section I — Drive Installation
Outfitting.......................................4
Installation .....................................6
Lubrication .....................................8
Start Up .......................................8
Section II — Drive Service & Repair
Preventive Maintenance ...........................9
Stored & Inactive Drives ...........................9
Removal of Drive ................................9
Drive Disassembly ..............................11
Identifying & Ordering Parts.......................13
Recommended Spare Parts .......................13
Parts List of Falk Part Numbers ....................15
Bearing Cross Reference Numbers .................16
Seal Cross Reference Numbers....................16
Section III — Drive Reassembly
Drive Reassembly............................ 17-20
Appendix
Appendix A: Lubrication Recommendations...... 22-29
Appendix B: Backstop Installation ............. 30-33
Appendix C: TA Removal Tool ................. 34-35
Appendix D: Motor Mount Installation ........... 36-37
Appendix E: Vertical Standpipe Installation ...... 38-39
Appendix F: Modifications for Non-Standard
Mounting Positions ............... 40-41
Appendix G: Retaining Rings for Bushing Nuts and
Thrust Plates & Tooth Combinations For ...
Vibrations Analysis ..................42
Appendix H: Drive Shaft Recommendations for
Tapered Drive Shafts ................43
Appendix J: Drive Shaft Recommendations
Using TA Taper®Bushing.......... 44-45
Appendix K: Drive Shaft Recommendations
Using (TCB) Kit.................. 46-47
Appendix L: V-Belt Guard Installation........... 48-49
Appendix M: Electric Fan Installation............ 50-51
Appendix N: Reliability Package ............... 52-53

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
(PN-212395)
Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 2 of 53) Sizes 5407-5608
INTRODUCTION
WARRANTY — Rexnord (the ”Company”) warrants
that Quadrive Shaft Mounted gear drives (I) conform to
Company’s published specifications, and (II) are free
from defects of material for three years from the date of
shipment.
Company does not warrant any non-Company branded
products or components (manufacturer’s warranty applies)
or any defects in , damage to, or failure of products
caused by: (I) dynamic vibrations imposed by the drive
system in which such products are installed unless the
nature of such vibrations has been defined and accepted
in writing by Company as a condition of operation; (II)
failure to provide suitable installation environment; (III)
use for purposes other than those for which designed, or
other abuse or misuse; (IV) unauthorized attachments,
modifications or disassembly, or (V) mishandling during
shipping.
WARNING: Consult applicable local and national safety
codes for proper guarding of rotating members.
Lock out power source and remove all external loads from
drive before servicing drive or accessories.
CAUTION: Do not weld the drive housing or accessories
without prior approval from Rexnord. Welding on the drive
may cause distortion of the housing or damage to the
bearings and gear teeth. Welding without prior approval
will void the warranty.
DRIVE RATING — Operate the drive only within the
horsepower and output speed for which it was selected
and specified in Selection Guide 371-110 for the
application. Refer to the nameplate for drive size, ratio and
data.
FACTORY REPAIR AND REBUILD — Rexnord wants to
continue to be your primary supplier, and we extend our
service to you if your equipment is in the need of repair or
replacement.
We are able to furnish a fast turnaround on both the
quotation and rebuild. Nobody can do the job better than
Rexnord. If you need repair on Rexnord products, just ask.
Contact your local Rexnord account executive or Rexnord
distributor for more information.

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk Quadrive Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 3 of 53)
Drive Identification
5 407 J 25 A
Size (Series)
Maximum Bushing Bore (4 7/16”)
Drive Type
Ratio (Nominal 25:1)
Model
J is the basic drive identification. It can be furnished as a shaft-mounted drive JR; a flange mounted drive JF; or a screw
conveyor drive JSC (size 5407 only), as illustrated below. These unique identifiers, JR, JF & JSC, are used throughout this
manual to assist you in identifying the instructions which apply to your drive arrangement.
(JR) Shaft-Mounted Drive
1) Drive
2) Torque Arm
3) TA Taper Bushing
(JF) Flange Mounted Drive
1) Drive With Flange
TA Taper Bushing Optional
(JSC) Screw Conveyor Drive (size 5407 only)
1) Drive With Seal Housing
2) Drive Shaft
+ Motor Mounts
+ Backstops
+ Shaft Cooling Fans
+ Electric Cooling Fans
+ Vertical Standpipe
+ Trough Ends
+ Thrust Plate Kits
+ V-Belt Guards
+ TA Removal Tool
NOTE: Use a TA Taper bushing when mounting these drives on a straight driven shaft (hollow shaft is taper bored).

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
(PN-212395)
Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 4 of 53) Sizes 5407-5608
Section I
DRIVE INSTALLATION
OUTFITTING
1. JR, JF & JSC — Find the desired mounting position
in Figure 1 and install air vent and magnetic drain
plug (packaged separately with drive). Also note and/
or mark the oil level plug location OR in the case of a
vertical mounting, refer to Appendix E, for installation
of vertical stand pipe. If the mounting angle exceeds
the limitations shown in Figure 1, refer to Appendix F,
to determine modifications necessary within the limits
illustrated therein. DO NOT fill drive with lubricant at this
time.
2. JR — The tapered bore hollow shaft is designed for
use with a TA Taper bushing for mounting on a driven
shaft with a straight outside diameter. Shaft tolerances
for driven shafts are shown in Table 1. The minimum
and maximum driven shaft engagements, dimension
N in Figure 2, are shown in Table 2. The minimum
engagement is necessary for full bushing engagement;
the maximum engagement is only required if a thrust
plate will be employed to remove the drive from the
driven shaft (See Appendix C for preferred removal
method).
F
L
REPOSITION PLUGS TO
SUIT REQ’D. MOUNTING
D = DRAIN
F = FILL & VENT
L = OIL LEVEL
(HIGHEST
SIDE PLUG)
F
L
D
3 O’CLOCK
6 O’CLOCK
L
F
D
9 O’CLOCK
D
L
FD
12 O’CLOCK
Figure 1 HORIZONTAL DRIVES
STANDPIPE &
VENTED DIPSTICK
FILL
STANDPIPE &
VENTED DIPSTICK
FILL
DRAIN
INPUT SHAFT UP
INPUT SHAFT DOWN
DRAIN
MAX.
±1°
VERTICAL DRIVES
ANGULAR LIMITS FOR HORIZONTAL MOUNTING
(ALL CLOCK POSITONS)
INCLINE ROTATION
5507 & 5608 - 5° INCLINE
ON DRIVES WITH BACKSTOPS
IN ALL MOUNTING POSITIONS

5407 & 5415 - 0° INCLINE DOWN ON
DRIVES WITH BACKSTOPS IN 9 OR 12
O’CLOCK MOUNTING POSITIONS

20° UP
MAX.
5° DOWN
MAX.


±10° MAX.
Table 1 — Driven Shaft Tolerances 
Shaft Diameter — Inches Max Undersize
(Inches)
Over Thru
2.500 4.000 .006
4.000 6.000 .007
6.000 7.000 .008
cMillimeters - h10 tolerance.
MIN. SPACE
REQUIRED FOR
V-BELT CLEARANCE
NMIN. SPACE
REQUIRED TO SPIN
BUSHING UNIT
BUSHING NUT
DRIVEN SHAFT
BEARING
SUPPORT
SHEAVE
INPUT
SHAFT
THRUST
PLATE
BORE
Figure 2
Table 2 — N Dimension 
Drive Size Minimum
Inches (mm)
Maximum
Inches (mm)
5407 8.38 (213) 12.40 (314)
5415 10.33 (263) 13.44 (341)
5507 10.66 (271) 14.53 (369)
5608 12.75 (324) 16.35 (415)
The minimum engagement is necessary for full bushing engagement;
the maximum engagement is only if a thrust plate will be employed to
remove the drive from the driven shaft.

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk Quadrive Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 5 of 53)
a. THIN WALL BUSHING (with keyway slot through
the bushing wall) — With the driven shaft keyway
at the 12 o’clock position, slide bushing assembly
onto the driven shaft, nut end first, and position the
keyway slot over the shaft keyway. The bushing may
have to be opened slightly to assist in installation.
Insert a screwdriver into the slot in the bushing and
very lightly pry open until the bushing slides onto the
shaft. Insert the drive key furnished with the bushing
into the shaft keyway. Proceed to Step 6.
BUSHING
NUT
RETAINING
RING
BUSHING
KEY
b. THICK WALL BUSHING (with separate internal and
external keyways) — Insert the driven shaft key into
the driven shaft keyway. If the driven shaft has an
open-ended keyway, stake the keyway, Figure 3,
to prevent axial dislocation of the shaft key under
operating conditions. Slide the bushing assembly
onto the driven shaft. The bushing may have to
be opened slightly to assist in installation. Insert
a screwdriver into the slot in the bushing and very
lightly pry open until the bushing slides onto the
shaft. Rotate the shaft so the external keyway in the
bushing is at the 12 o’clock position. Insert the drive
key, furnished with the bushing, into the keyway.
Proceed to Step 6.
SEAL HOUSING
HOLLOW SHAFT
KEY
RETAINING
RING
THRUST
PLATE
Figure 3
Figure 4
3. JSC (5407 ONLY) — Remove the output cover from the
input side of the hollow shaft bore and save. Separate
contents from the drive shaft kit. Install thrust plate and
retaining ring in the hollow shaft, Figure 4. Insert key
into drive shaft. Slide drive shaft thru the seal housing
into the hollow shaft and insert the thrust plate fastener
thru the thrust plate into the drive shaft. Tighten fastener
to 792 lb-ft (1073 Nm). Reinstall hollow shaft cover.
Continue outfitting based on the type of trough end seal
to be installed: (a) Waste Packing Seal; or (b) Lip Seal.
a. WASTE PACKING SEAL (Figure 5) — Pack seal
housing with waste packing and proceed to Step 4.
DRIVE COVER
DRIVE BASE
DRIVE SHAFT KEY
SEAL HOUSING
HOLLOW SHAFT
COVER
DRIVE SHAFT THRUST
PLATE FASTENER
THRUST PLATE
THRUST PLATE
RETAINING RING
INSERT
TROUGH END
TROUGH
END GASKET
SEAL HOUSING FASTENERS
WITH LOCK WASHERS
TROUGH END
MOUNTING FASTENERS
WASTE PACKING
DRIVE SHAFT
Figure 5
b. LIP SEAL (Figure 6) — Coat outside diameter of
seal with Permatex #3 or equivalent. Coat the seal
lips with bearing grease. Carefully slide seal over
drive shaft extension taking care to not damage the
seal lips. Drive seal into seal housing with the spring
loaded seal lip toward the trough end side of the
seal housing, flush with the seal housing. Proceed to
Step 4.
DRIVE COVER
DRIVE BASE
DRIVE SHAFT KEY
SEAL HOUSING
THRUST PLATE
RETAINING RING
THRUST PLATE
HOLLOW SHAFT
COVER
DRIVE SHAFT THRUST
PLATE FASTENER
INSERT
TROUGH END
SEAL HOUSING FASTENERS
WITH LOCK WASHERS
TROUGH END
MOUNTING FASTENERS
LIP SEAL
DRIVE SHAFT
Figure 6

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
(PN-212395)
Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 6 of 53) Sizes 5407-5608
4. JSC — Fasten the trough end to the seal housing using
the hex head cap screws included in the drive shaft kit.
Refer to Table 3 for torque value. Proceed to Step 6.
Table 3 — 5407JSC Trough End Fastener
Size & Tightening Torque
(Non-lubricated Fasteners)
Drive Shaft Diameter 3.000 & 3.437
Fastener Size .750-10UNC
Tightening Torque, lb-ft (Nm) 245 (332)
5. JF — (NOTE: If the driven shaft has not been machined
to Falk’s taper bore specifications per Manual 377-140
and a straight shaft is to be utilized, refer to Manual
377-144 for instructions).
Install backstop prior to installation of drive (refer to
Appendix B). Installation of internal backstops NOT
Factory-installed may require removal of mounting
flange, Ref. #12. Remove cover from input end of hollow
shaft bore and save. Install the thrust plate and retaining
ring in the hollow shaft (refer to Figure 4). Proceed to
Step 6.
INSTALLATION
6. JR, JF & JSC — Refer to Figure 7 for recommended
lifting method. In order to sling JR & JF drives as
illustrated, install the torque arm fastener in the torque
arm anchor brackets. Sling the drive from the fastener
as shown. For vertical installation, use (3) eyebolts as
illustrated. Eyebolt sizes are 1/2” for 5407 thru 5507
and 3/4” for 5608. DO NOT remove sling until drive is
secured to shaft. Before lifting the drive into position,
rotate the high-speed shaft until the hollow shaft keyway
will be in position to line-up with the driven shaft key. JF
proceed to Step 11; JSC to Step 12.
SLING FROM
LONG FASTENER
WITH NUT
SLING AROUNG
SEAL HOUSING
AND INPUT SHAFT
Figure 7
7. JR — If the drive was received with a backstop
installed, the backstop must be temporarily removed
to facilitate mounting. Refer to Section II, Step 10 for
backstop removal instructions. Proceed to Step 8.
8. JR — Lift the drive into position and slide onto the drive
shaft taking care that the driven shaft key seats into the
hollow shaft keyway. DO NOT hammer or use excessive
force. Refer to Figure 8 for installation of the torque arm.
The exact position of the torque arm may vary within
the range shown. For torque arm mountings other than
shown, refer to Factory. If it is necessary to shorten the
torque arm assembly, cut the excess from either tie rod
end.
The support to which the clevis bracket is to be
fastened must sustain the torque reaction shown
in Table 4. The maximum load reaction through the
torque arm occurs when the torque arm is located in
the extreme off angle position. Use Grade 5 fasteners
to anchor the clevis bracket; refer to Table 5 for the
fastener size and tightening torque.
Bolt the torque arm to both the clevis bracket and the
drive anchor bracket and tighten the bolts until seated
against the brackets. DO NOT bend the bracket as
clearance between the clevis brackets and tie rod is
necessary.
A
A
2°
2°
CLEVIS
BRACKET
TIE ROD
AND
TURNBUCKLE
Figure 8 — Torque Arm Mounting Positions
6 O’Clock Mounting Position Shown
Drive Size A
5407-5507 30°
5608 25°
Table 5 — Tie Rod Clevis Bracket Fastener
Tightening Torque
Drive
Size
Fastener 
Size
Tightening Torque — lb-ft (Nm)
Steel
Foundation
Concrete
Foundation
5407 1.000-8UNC 567 (768) 467 (633)
5415 1.250-7UNC 1050 (1424) 867 (1175)
5507 1.250-7UNC 1050 (1424) 867 (1175)
5608 1.250-7UNC 1050 (1424) 867 (1175)
Grade 5 fasteners required.
Table 4 — Load Reaction Through Tie Rod
Drive Size 5407 5415 5507 5608
Load , lb 21840 26120 32940 40930
Load , (N) (97130) (116170) (146500) (182060)
cLoad includes moment due to motor and motor mount with torque arm at
maximum angle.

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk Quadrive Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 7 of 53)
9. JR — Thread the bushing nut onto the hollow shaft one
to two turns.
NOTE: The bushing nut threads have been coated with
an anti-seize compound at the Factory. This compound
should not be removed. Before re-installing a previously
used nut, re-coat the nut threads only with an anti-seize
compound.
NOTE: In extremely severe or corrosive environments,
additional anti-seize compound MUST be applied to the
threads of the TA bushing nut.
WARNING: DO NOT apply anti-seize or lubricant
to bushing or shaft surfaces. Use of anti-seize may
prevent secure connection of the drive to the shaft and
cause the drive to move.
WARNING: Overtightening can fail the internal retaining
ring. (See Appendix G, for listing of retaining rings).
DO NOT apply ANTI-SEIZE
on these areas.
a. PREFERRED METHOD — Use a spanner, chain
or pipe wrench to tighten the bushing nut to the
torque value indicated in Table 6. Apply Loctite
243 or equivalent to threads of setscrews. Tighten
the setscrew on the bushing nut to 19 lb-ft (26 Nm)
torque.
b. ALTERNATE METHOD (TO BE USED WHEN
EXACT TORQUE CAN NOT BE MEASURED) —
Use a spanner (Table 6), chain or pipe wrench to
tighten the bushing nut just until the drive can no
longer be moved by hand axially on the driven shaft.
Loosen nut ONLY until it can be turned by hand but
do not unseat the taper. Retighten the nut hand tight.
Now mark a spot on the bushing nut. Next mark a
spot on the driven shaft 180° from the first mark. Use
the spanner wrench to tighten the nut until the two
marks are aligned i.e., one half turn. Apply Loctite
243 or equivalent to threads of setscrews. Tighten
the setscrew on the bushing nut to 19 lb-ft (26 Nm)
torque.
Table 6 — Spanner Wrench Type & Spanner
Nut Tightening Torque
Drive
Size
Adjustable Hook Spanner Wrench Spanner Nut
Tightening Torque
lb-ft (Nm)
GearWrench Williams
5407 81858 (6-1/8" to 8-3/4") 474B 333 (452)
5415 81858 (6-1/8" to 8-3/4") 474B 333 (452)
Ridgid Tool Williams
5507 92685  (2" to 12") CT-15 400 (542)
5608 92685  (2" to 12") CT-15 400 (542)
cThese are chain wrenches where standard spanner wrenches are not
available.
10. JR — Install backstop, motor mount, motor, sheaves
(mount sheaves as close to the drive and motor
housing as possible), belts and guard. Refer to
Appendix D for motor mount installation instructions.
Proceed to Step 13.
11. JF (USING TAPERED DRIVE SHAFT) — Put key into
the driven shaft. Lift drive into position and slide onto
the driven shaft taking care that the driven shaft key
seats into the hollow shaft keyway. DO NOT hammer or
use excessive force. Secure the drive to the foundation
with fasteners using torque values shown in Table 7.
Next, secure the drive to the shaft with the thrust plate
fastener. Refer to Table 8 for torque value. Reinstall the
hollow shaft cover. Install motor mount, motor, sheaves,
belts and guard. Refer to Appendix D for motor mount
installation instructions. Proceed to Step 14.
12. JSC (5407 ONLY) — Assemble drive to trough and
install drive shaft coupling bolts per screw conveyor
manufacturer’s instructions. Install motor mount, motor,
sheaves, belts and guard. Refer to Appendix D for motor
mount installation instructions. Proceed to Step 14.
13. JR — When the torque arm turnbuckle is used for belt
tension adjustment, position the motor so that the belt
pull will be about 90° to a line through the drive input
shaft and hollow shaft as shown in Figure 9. For drives
where the motor is moved to adjust belt tension, mount
the motor slide base so that the belt tension adjustment
is approximately parallel to the belt centers. Refer to
Appendix D, for instructions relative to alignment of
sheaves and belts. Proceed to Step 14.
Table 7 — JF & JSC Drives – Foundation
Fastener & Tightening Torques
(Non-Lubricated Fasteners)
Drive Size Fastener Size & Grade Torque lb-ft (Nm)
5407 .750-10UNC, Gr. 5 245 (323)
5415 1.250-7UNC, Gr. 5 1050 (1424)
5507 1.250-7UNC, Gr. 5 1050 (1424)
5608 1.500-6UNC, Gr. 5 1842 (2497)
Table 8 — Thrust Plate Fastener Data
(Non-Lubricated Fasteners)
Drive
Size Fastener Size & Grade Torque lb-ft (Nm)
Minimum Thread
Depth-Inches (mm)
5407 1.000-8UNC x 4.00, Gr. 8 792 (1073) 2.75 (69.8)
5415 1.250-7UNC x 4.00, Gr. 8 1596 (2164) 2.50 (63.5)
5507 1.250-7UNC x 4.00, Gr. 8 1596 (2164) 2.50 (63.5)
5608 1.250-7UNC x 4.00, Gr. 8 1596 (2164) 3.00 (76.2)
Fastener lengths given are for applications using tapered drive shafts.
Other lengths may be needed for applications using tapered bushings.

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
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Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 8 of 53) Sizes 5407-5608
90 °
BELT TENSION ADJUSTED
WITH TORQUE ARM
BELT TENSION ADJUSTED
WITH MOVABLE MOTOR
PARALLEL
Figure 9
LUBRICATION
CAUTION: DRIVES SHIPPED WITHOUT OIL.
14. JR, JF & JSC — Refer to Appendix A for selection of
lubricant. Refer to Table 9 for approximate oil capacity
of drives.
15. JR, JF & JSC — (HORIZONTAL MOUNTING)
Remove air vent and oil level plug (Refer to Step 1). Fill
the drive until oil shows in the oil level hole. Coat the air
vent and plug threads with Permatex #3 or equivalent
thread sealant before replacing.
JRV, JFV & JSCV — (VERTICAL MOUNTING) Refer to
Figure 1, Step 1.
Remove the fill plug and fill with oil to level marked on
the dipstick.
Coat the plug threads with Permatex #3 or equivalent
thread sealant before replacing.
If stand pipe is used as oil fill, the intermediate cover
plug must be removed to eliminate entrapped air.
16. JR, JF & JSC — Where applicable, WITH A HAND
GREASE GUN, pump grease into the input seal cover,
Figure 10, until the grease appears at the shaft. Wipe
off excess grease from the shaft. DO NOT use grease
where it could contaminate the product e.g., foods,
drugs etc.
START UP
17. JR, JF & JSC — Before operating the drive, check
for any fasteners, pipe plugs, air vent, etc. which
may have been loosened in the course of outfitting,
installing and lubricating the drive, to be sure that they
have been properly retightened. Check correct rotation
of motor & backstop and be sure drive is properly
lubricated. After one week of operation repeat check
of all external fasteners and pipe plugs.
18. After one month of operation:
a. Operate the drive until the sump oil reaches normal
operating temperature. Shut the drive down and drain
immediately.
b. Immediately flush the drive with an oil of the same
type and viscosity grade as the original charge
(warmed to approximately 100°F (38°C) in cold
weather). Rapidly pour or pump a charge equal to
25-100% of the initial fill thru the drive, or until clean
oil flows thru the drain.
c. Close the drain and refill the drive to the correct level
with new oil of the correct type and viscosity.
Table 9 — Approximate Oil Capacity 
Drive
Size
JR, JF & JSC
Gallons (Liters)
JRV & JFV
Gallons (Liters)
5407 4.3 (16.3) 6.3 (23.8)
5415 7.0 (26.5) 9.5 (36.0)
5507 10.3 (39.0) 13.3 (50.3)
5608 12.0 (45.4) 19.5 (73.9)
cQuantities are approximate. Always fill drive to specified level.
Figure 10

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk Quadrive Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 9 of 53)
Section II
DRIVE SERVICE & REPAIR
PREVENTIVE MAINTENANCE
PERIODICALLY — Carefully check the oil level of the drive
when it is stopped and at ambient temperature, add oil if
needed. If the oil level is above the specified level, have
the oil analyzed for water content. Moisture in the oil may
indicate seal leakage or condensation. If so, correct the
defect immediately and change the oil. DO NOT overfill
or oil leakage may result. On vertical shaft drives, remove
fill plug before filling or checking oil level. If a drive is
equipped with a fan, periodically clean accumulated
foreign matter from the fan and fan guard to allow
adequate air flow.
GREASE PURGED SEALS — Periodically (at least every
six months), depending upon the frequency and degree
of contamination, purge contaminated grease by slowly
pumping fresh bearing grease through the seal cage WITH
A HAND GREASE GUN until fresh grease flows out along
the shaft. Wipe off the purged grease. Refer to Appendix A.
OIL CHANGES
Refer to the Lubrication Recommendations Section in
Appendix A.
STORED & INACTIVE GEAR DRIVES
Each drive is protected with a rust preventive that will
protect parts against rust for a period of 4 months in
an outdoor shelter or 12 months in a dry building after
shipment from the Factory.
If a gear drive is to be stored, or is inactive after installation
beyond the above periods, add Nox-Rust VCI-10 vapor-
phase rust inhibitor. For drives that have oil installed, add
Nox-Rust VCI-10 vaper-phase rust inhibitor at the rate of
2% of sump capacity. For drives without oil, add Nox-Rust
VCI-10 vapor-phase rust inhibitor at the rate of one ounce
per cubic foot of internal drive space. Rotate the shafts
several times by hand. Before operating, drives which have
been stored or inactive must be filled to the proper level
with oil meeting the specifications given in this manual.
Refer to Manual 128-014 for "Start-up after Storage"
instructions.
cProduct of the Daubert Chemical Company, Chicago, Illinois.
Periodically inspect stored or inactive gear drives and
add Nox-Rust VCI-10 every six months, or more often if
necessary. Indoor dry storage is recommended.
The air breather should be replaced with a plug (air
breather should be attached to gear drive for future use)
so that the protective rust inhibiting atmosphere is sealed
inside the drive. Install air breather when preparing drive
for operation.
WARNING: The rust preventative oil from the factory
and Nox-Rust VCI-10 are not H1 registered with the NSF
(National Sanitation Foundation) as suitable for food
processing applications. When Food Grade Lubricants are
to be used, it is the end users responsibility to properly
flush and prepare the drive for Food Grade service.
Contact the lubricant manufacturer for specific information
and flushing procedures.
REPAIR & REPLACEMENT
WARNING: Consult applicable local and national safety
codes for proper guarding of rotating members.
Lock out power source and remove all external loads from
drive before servicing drive or accessories.
NOTE: Only the seals on the input side (See Figure 12) of
5407-5507 drives and high-speed shaft seals of the 5608
drive can be replaced without removing the drive from the
driven equipment. All other repairs require removal of the
drive from the driven equipment. Proceed to Step 1 for
drive removal. Proceed to Step 5 for replacement of seals.
REMOVAL OF DRIVE
See note above if only seal replacement is intended.
1. JR, JF & JSC — Drain the lubricant at this time.
Remove safety guards and belts (motor and motor
mount, optional). Remove backstop. Refer to Section II,
Step 10, for backstop removal instructions.
WARNING: Drive must be supported during removal
process. Use a sling around the motor mount or as
recommended in Section I, Step 6. Take up the slack in
the sling before proceeding.

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
(PN-212395)
Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 10 of 53) Sizes 5407-5608
2. JR — Refer to Appendix C, for instructions for using the
TA torque assist removal tool.
ALTERNATE METHOD — Loosen the setscrew on the
bushing nut which is located at the output end of the
hollow shaft. Use a spanner, pipe or chain wrench to
loosen the bushing nut (Section I, Table 6). Initially, the
nut will freely rotate counter clockwise approximately
180° as the nut moves from the locked position to the
removal position. At this point anticipate resistance
which indicates unseating of the bushing. Continue to
turn the nut until it is free from the hollow shaft. Prepare
drive for lifting (Figure 7) by disconnecting the torque
arm at the drive end. Slide the drive from the bushing.
The bushing can be left in place or removed, as
required. If bushing will not slide off of the shaft, insert
a small prybar into the split of the bushing and pry the
split open slightly to loosen the bushing and remove
from the shaft. Proceed to Step 5 for replacement of
seals only or Step 9 for drive disassembly procedure.
3. JF — Remove the hollow shaft cover, Ref. #14 (Figure
12), from the input end of the hollow shaft. Remove the
bolts which fasten the mounting flange to the driven
equipment.
Remove the fastener, retaining ring, and thrust plate
from the hollow shaft. Refer to Table 10 and select
a backing bolt and flat washer and install them into
the drive shaft as illustrated in Figure 11. The bolt
head provides a working surface for the removal bolt.
Reinsert the thrust plate and retaining ring into the
hollow shaft and select a removal bolt from Table 10.
Thread the removal bolt into the thrust plate until it
contacts the backing bolt head. Torque the removal
bolt to the value shown in Table 10. (If the thrust plate
rotates in the shaft, align the slot in the plate with the
hollow shaft keyway and insert a screw driver or piece
of key stock to prevent rotation of the plate.) After
torquing the bolt, as instructed, strike the bolt, sharply
with a hammer and retorque the bolt if separation
of the drive from the shaft did not occur. Repeat this
procedure, retorquing the bolt after each blow, until
separation occurs.
Table 10 — Removal & Backing Bolt Size and
Length
Drive
Size
Removal Bolt
Size & Minimum
Length – Inches
Maximum
Tightening
Torque – lb-ft (Nm)
Backing Bolt
Size & Maximum
Length – Inches
5407 1.125-7UNC x 3.00 742 (1006) 1.000-8UNC x 2.75
5415 1.500-6UNC x 3.75 1842 (2497) 1.250-7UNC x 2.50
5507 1.500-6UNC x 3.75 1842 (2497) 1.250-7UNC x 2.50
5608 1.500-6UNC x 3.75 1842 (2497) 1.250-7UNC x 3.00
HOLLOW
SHAFT
BACKING BOLT
REMOVAL
BOLT
THRUST
PLATE
RETAINING
RING
TAPPED HOLE
IN DRIVE SHAFT
DRIVE SHAFT
FLAT WASHER
CAUTION: Failure to follow this procedure may result
in the destruction the threads in the thrust plate. (If the
retaining ring becomes damaged, refer to Appendix G,
for replacement information.)
Proceed to Step 5 for replacement of seals only OR
Step 9 for drive disassembly procedure.
4. JSC (5407 ONLY) — Remove drive from driven
equipment trough end by removing the trough end
mounting screws from seal housing. Remove coupling
bolts from drive shaft and slide drive with drive shaft
away from the driven equipment.
To remove drive shaft from the drive, remove the hollow
shaft cover, Ref. #14 (Figure 12), from the input end of
the hollow shaft and then refer to Step 3 above. The
procedure to separate the JSC drive from the shaft is
the same as for separation of a JF drive from driven
equipment shaft.
After separation of the drive and shaft has been
achieved, determine the type of seal equipped in the
seal housing. If it is a waste packing seal, remove the
waste packing material and then remove the loosened
drive shaft from the seal housing side of the drive.
If equipped with a lip seal, first remove the lip seal
following the removal instructions from Step 5. After seal
is removed from seal housing, remove the loosened
drive shaft from the seal housing side of the drive.
CAUTION: The seal housing acts as the bearing
cage, therefore, DO NOT remove from the drive unless
complete drive disassembly is anticipated. Removal of
the seal housing will require readjustment of the L.S.
bearings, Section III.
Figure 11

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk Quadrive Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 11 of 53)
DRIVE DISASSEMBLY — (Refer to Parts Drawing
Figure 14)
Prior to initiating any disassembly or repair, clean
accumulated dirt and grime from the surface of the drive
housing. Clean the exposed portion of the high-speed and
hollow shafts with a solvent and a non-abrasive cloth. If
the seals only are being replaced proceed to Step 5. If the
drive will be disassembled for inspection or repair, skip to
Step 9.
CAUTION: Do not damage shaft; new seals will leak if seal
contacting surface is marred. Do not use abrasive material
on shaft seal contacting surface.
5. SEAL REMOVAL — (When drive is to be disassembled,
proceed to Step 9) Seal replacement is recommended
after seal removal. When removing seals, maintain shafts
in a horizontal plane to prevent any foreign matter from
falling into the bearings. Refer to Figures 12, 13 & 14.
NOTE: Only seals on the input side (See Figure 12) of
5407-5507 drives and high-speed shaft seals of the
5608 drive can be replaced if gear drive is mounted on
driven equipment. If gear drive removal is necessary,
proceed to Step 1 for removal instructions.
If drive removal is not necessary, drain lubricant at this
time.
Depending upon seal(s) being replaced, remove v-belt
guard, v-belts, high-speed shaft sheave, shaft cooling
fan (if so equipped), backstop (5507 & 5608J only, if so
equipped) and other accessories as necessary.
a. Two seal mounting arrangements are used as
follows:
Seals are installed into seal cages where seal
cage must be removed from drive to remove
seals. Removal of these seal cages will require
readjustment of the bearings. The following seals
use this mounting arrangement:
5407-5507; All types, H.S. seals.
5407JF & JSC; L.S. seals (output side).
5608; All types, H.S. & L.S. seals.
Refer to Figures 12, 13 & 14 and remove seals with
this mounting arrangement as follows:
(1) Clean shaft extension with solvent and remove
all sharp edges. Remove seal cage, Ref. #11,
#12, #21 or #66.
(2) Drive out old seal from seal cage.
(3) Scrape old Permatex from bore exercising
caution not to score the bore.
INPUT SIDE
REF. #14
HOLLOW SHAFT
COVER
(5407-5507 ONLY)
HIGH SPEED SHAFT
REF. #31
REF. #23 REF. #21 REF. #39
Figure 12
b. Seals are installed into seal cages where seal cage
may remain attached to drive. The following seals
use this mounting arrangement:
5407 JF & JSC; L.S. seals (input side).
5407-5507JR; L.S. seals (input & output sides).
5415-5507JF; L.S. seals (input & output sides).
Refer to Figures 12, 13 & 14. Remove the hollow
shaft cover, Ref. #14, on Sizes 5407-5507. Remove
seals with this mounting arrangement as follows:
(1) Clean shaft extension with solvent and remove
all sharp edges. Use a sharp center punch to
lightly punch the seal case as a guide for the
drill. NOTE: DO NOT drive seal into the bore
too deep. Seals are not axially retained and
disassembly of the drive may be required if the
seal is driven too deep.
(2) Wrap several turns of tape around a .125”
(3 mm) diameter drill bit approximately .25”
(6 mm) from the drill point to prevent the drill bit
from entering too deeply into the housing and
damaging the bearing. Grease or magnetize the
drill bit to help retain the chips. Drill two .125”
(3 mm) diameter holes in the seal case 180°
apart. Control the angle of the drill as illustrated
in Figure 13 to prevent damage to the shaft.
(3) Insert two #10-.750” (M5 x 20) sheet metal
screws into the seal case leaving .5” (13 mm) of
the screw protruding above the seal face. DO
NOT drive the screw more than .25”
(6 mm) beyond seal face or bearing damage
may occur. Use a claw type pry bar under the
screw head as shown in Figure 13 and lift the
seal out. Remove all metal chips. Use a magnet
to remove the metal chips that fall into the bore.
Flush the drive to remove metal chips from the
bearing. Remove Permatex from the housing
bore.
Figure 13
RIGHT WAY
WRONG WAY

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
(PN-212395)
Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 12 of 53) Sizes 5407-5608
6. SEAL SURFACE CONDITION — Carefully inspect
polished surface of shaft where the seal makes contact.
If the seal surface shows any sign of a nick, scratch,
spiral swirl or groove, the shaft should be replaced
or refurbished to prevent leakage of the lubricant. (In
many instances the seal surface can be restored by use
of a thin wall wear sleeve. Check with your local seal
supplier and follow the manufacturer’s instructions for
installing the wear sleeve.)
7. SEAL INSTALLATION
CAUTION: Protect seal lips from sharp edges of the
keyway by wrapping thin strong paper (Kraft paper)
around the shaft and coating the paper and seal lips
with grease before sliding the seal on or off the shaft.
Do not expand the seal lips more than .030” (0,75 mm)
diameter.
a. Install seals into seal cages where cages must be
removed from drive:
5407-5507; All types, H.S. seals.
5407 JF & JSC; L.S. seals (output side).
5608; All types, H.S. & L.S. seals.
Shim-gaskets are used behind seal cages and end
covers to adjust bearings. The correct shim-gasket
pack must be determined prior to seal installation to
attain proper bearing adjustment.
Proceed to Section III, Step 3 for instructions
regarding output side seal cages. Proceed to
Section III, Step 5f for instructions regarding input
side seal cages. Proceed to Section III, Step 6,
bearing adjustment instructions, to determine the
proper shim-gasket pack thickness.
Remove seal cage and install seal as follows:
Note: When removing a seal cage to install a seal,
be sure to use the shim-gasket pack determined
from above to assure correct bearing adjustment.
Coat O.D. of seal with Permatex #3 or equivalent
sealant. Position seal squarely in seal cage with
spring-loaded lip toward drive. Drive or press seal
into cage using a flat faced tool until seated.
Install the complete seal cage shim pack. Carefully
slip seal cage with seal over the shaft. Replace
fasteners and cross tighten to torques listed in Table
14, Section III.
b. Install seals into seal bores where seal cages may
remain attached to housing:
5407 JF & JSC; L.S. seals (input side).
5407-5507JR; L.S. seals (input & output sides).
5415-5507JF; L.S. seals (input & output sides).
Coat O.D. of seal with Permatex #3 or equivalent
sealant. Carefully slip seal over shaft and position
squarely in seal bore with spring-loaded lip toward
drive. Use a cylindrical square faced tool to drive or
press seal into bore until outer seal wall is seated
0.14” (3.5 mm) inside the seal bore outer wall.
CAUTION: DO NOT seat seal against bearing; a
shoulder is NOT provided for stopping the seal.
Measure seal axial runout with a dial indicator
mounted on the shaft. If the seal axial runout is more
than 0.010” (0.25 mm), tap high side of seal with
installation tool until seal axial runout is 0.010”
(0.25 mm) or less.
8. DRIVE REPAIR IS COMPLETE — Review instructions
in Section Ifor drive installation.
DRIVE DISASSEMBLY — CONTINUED
9. When seals, Ref. #22 & 23 are to be reused
(replacement is recommended), wrap the high-speed
shaft keyway and hollow shaft threads with masking
tape or light weight kraft paper to protect seal lips
during disassembly. Cover wrapping with a light coat
of grease.
10. Remove backstop parts if so equipped. (For all drives,
note direction of rotation of high-speed shaft for proper
reassembly.)
For sizes 5407 & 5415J14 remove cover Ref. #19,
backstop Ref. #5A and appropriate spacers from
backstop cage. Re-install cage and cover without the
backstop and finger tighten fasteners.
For size 5415J25, remove entire backstop cage.
Disassemble retaining rings and remove backstop. Re-
install cage and cover without the backstop and finger
tighten fasteners.
For sizes 5507 & 5608, remove retaining ring and slide
backstop Ref. #5A off of shaft.
11. Lay drive on bench with high speed shaft up. Remove
housing cover fasteners, Ref. #33. Tighten the dowel
nuts to remove the dowels. Screw cap screws into
tapped holes (5/8-11UNC, sizes 5407-5507; 7/8-9UNC,
size 5608). Tighten cap screws until the seal between
the cover plate and base is completely broken. Screw
eyebolts into tapped holes diagonally opposite in
cover plate. Attach hoist cables and lift cover plate off
housing base.
12. Remove the shaft assemblies (J05, Ref. #3A & 4A; J14
or J25, Ref. #1A, 2A & 4A) from output housing, Ref.
#10.
13. Turn housing on either narrow side. If tapered roller
bearings are being replaced, remove end covers and
seal cage from output side of drive and drive bearing
cups through the bores. Remove bearing cups from
the housing cover in the same manner.
14. Drive seals out from base and cover bores and seal
cages if replacement is indicated. Remove gasket
material, seal compound and any accumulated foreign
matter from seal joints, bores and adjacent sealing
surfaces. Use a solvent to clean out the housing covers
and shaft assemblies.
15. If drive is equipped with an internal backstop, check
the shaft surface and the backstop sprags (inside
diameter) for signs of wear. If either component
shows evidence of wear, both should be replaced
(Assemblies Ref. #1A or 3A and 5A). Also refer to Step
6 for inspection of seal surfaces.

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk Quadrive Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 13 of 53)
16. Inspect gear teeth for wear or indications of fatigue;
e.g., hairline cracks at the root of the tooth. If one
element has undergone severe wear or broken teeth,
replace the mating element also.
17. Clean and inspect bearings for wear. Lubricate with
light oil before spinning to avoid scoring of working
surfaces. Remove any worn bearings with a wheel
puller. If tapered roller bearings are being replaced,
replace the bearing cups. DO NOT use new cone
assemblies with worn (old) cups.
18. If gears are to be replaced, use a wheel puller or
press to remove gears Ref. #1A4 or 4A4 from their
shaft. Exercise caution to avoid scoring shaft seal
diameter with the keyway in the gear.
19. Inspect all fasteners for damage or wear
and replace with fasteners of equal
grade. Grade 5 fasteners have three (3)
radial lines on the head. Fasteners are
available in kit form, Ref. #80.
20. If the shaft assemblies can be reused intact (no new
parts required), refer to Section III, Steps 5 thru 8, for
reassembly procedure. Replace all shim-gaskets with
new parts, Kit Ref. #100.
IDENTIFYING & ORDERING PARTS
1. Refer to the parts diagram, Figure 14, and make a list
of the parts required by part reference number. For
example, Ref. #21, 23, 100, 1A, 2A1, and 2A2. When a
gasket joint is separated, always replace with new shim-
gaskets. Order Ref. #100 shim-gasket kit.
2. Now refer to the parts list, Table 11, and determine the
part description and Falk part number using the part
reference number (Step 1) and the drive identification
(e.g., 5407J25C) in the column headers of the parts list.
3. Use the part description and Falk part number to order
the required parts. In the examples of preceding Steps
1 and 2, Ref. #21, 23, 100, 1A, 2A1 and 2A2 for a
5407J25C, parts would be ordered as follows:
Ref. #21 — Seal cage ....................4729121
Ref. #23 — Seal .........................2914622
Ref. #100 — Shim-gasket kit ...............0786841
Ref. #1A — Shaft assembly with gear ........4729124
Ref. #2A1 — Bearing .....................0921780
Ref. #2A2 — Bearing .....................0921780
4. Tables 12 and 13 convert Falk part numbers to
bearing and seal manufacturer’s part numbers. Tooth
combinations are listed in Appendix G.
5. Place your order with your local Rexnord distributor. If
you need to locate a distributor, phone [phone]
in the United States and Canada.
RECOMMENDED SPARE PARTS
1. For non-critical drive applications a complete set of
bearings, seals and shim-gaskets is recommended. If
stored in their original packaging in a dry, cool location,
these parts have a minimum shelf life of 5 years.
2. For critical drive applications (where an outage would
create a major production loss), a complete drive is
recommended.
COVER PLATE
HOLLOW
SHAFT COVER
LOW-SPEED
GEAR
LOW-SPEED
PINION ASSEMBLY
HIGH-SPEED
SHAFT ASSEMBLY
AIR VENT
HOUSING BASE
HOLLOW SHAFT
HIGH-SPEED
GEAR
OPTIONAL BACKSTOP
ASSEMBLY

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
(PN-212395)
Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 14 of 53) Sizes 5407-5608
Figure 14 — Sizes 5407 thru 5608
4A2 4A5
4A1
4A4
2A2 2A4
2A3
2A1
1A4
1A2
1A1
1A3
1A5
3A2
3A1
3A4
3A3
TYPES
J14&J25
TYPE
JO5
4A3
4A2 4A5
4A1
4A4
4A6
4A3
4A
ASSY.
2A ASSY.
1A 10 24
11
22
14
16
34
26
33
31
23
21
39
36
(5404-
5507)
33
ASSY.
3A ASSY.
4A ASSY.
34
37
37
35
15 25
22 11
24 41
42
12
38
10
19
30
29
20
18 28
17
27
5415 & 5507
ILLUSTRATED
INTERCHANGEABLE
29 5A4
5A1
5A2
40
68
64 66 31
5A1
5A ASSY.
5507 & 5608 WITH BACKSTOP
6A ASSY.
6A1 6A2
6A3

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk Quadrive Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 15 of 53)
Table 11 — Parts List Of Falk Part Numbers
Ref.
No. Part Description Drive Size
5407 5415 5507 5608
Housing Components - J05, J14 & J25
11 Seal Cage 0352865 0344480 0344425 4723185
12 Flange – Seal Housing 0364539 . . . . . . . . .
12 Mounting Flange . . . 0426963 0426935 4723190
14 Shaft Cover 2110604 1191500 4723160 . . .
15 Shaft Cover 4729119 4729138 4723142 4729168
16 Shaft Cover 4729119 4729138 4723164 4729168
17 Shaft Cover - Type J05 4729120 0344426 7392017 1237503
17 Shaft Cover - 5507J14 & 25 . . . . . . 7392017 . . .
18 Shaft Cover - Type J14 & J25 2110747 0344426 7392017 . . .
19 Shaft Cover - Type J14 & J25 1219672 0344428 . . . . . .
20 Backstop Cage - Type J14 1231142 0344429 . . . . . .
20 Backstop Cage - Type J25 1231142 0344427 . . . . . .
21 Seal Cage 4729121 4723144 4723165 4723186
22 Seal - 2 Required 2922296 913004 2914624 2921418
23 Seal 2914622 2914622 2920284 2921422
40 Torque Arm Assembly - JR Only 0785271 0785272 0785272 0785272
41 Air Vent 0914088 0914088 0914088 0914088
64 Seal - 14 . . . . . . 2917238 0912992
64 Seal - 25 . . . . . . 2916797 0912992
66 Seal Cage - 14 . . . . . . 4729318 4729169
66 Seal Cage - 25 . . . . . . 4729319 4729169
67 Anchor Bracket - J14, 25 . . . . . . 4729320 4729191
68 Torque Arm - Backstop - J14, 25 . . . . . . 4729346 4729346
80 Fastener Kit - Includes Ref. #33 thru 39 & 42 4729122 4729139 4729321 4729170
100 Shim-Gasket Kit - Includes Ref. #24 thru 31 0786841 0786842 6720196 0786844
Rotating Elements - J05 Without Backstop Without Backstop
3A Shaft Assembly - Includes Ref. #3A1 - 3A4 4729129 4729148 4729161 4729185
3A1 Bearing 0921855 0921494 0921752 0921751
3A2 Bearing 0921863 0921859 0921858 2918722
3A3 Pinion & Shaft - Includes Ref. #3A4 4729130 4729149 4729162 4729186
4A Shaft Assembly - Includes Ref. #4A1 - 4A6 4729133 4723150 4729163 4729189
4A1 Bearing 2905186 0921861 0921755 2905910
4A2 Bearing 2905186 0921861 0921755 2905910
4A3 Hollow Shaft - Includes Ref. #4A5 4729134 4723149 4729164 4729190
4A4 Gear 1238083 1238033 1238072 1237487
4A6 Spacer - 5608 . . . . . . . . . 1237496
6A Fan Assembly - Includes Ref. #6A1 thru 6A3 0785773 0785881 0785893 0785468
6A1 Fan 4729135 4729135 4729165 4729192
6A2 Guard 4729136 4729151 4729166 4729193
6A3 Backplate 4729137 4729152 4729167 4729194
Rotating Elements - J14 Without
Backstop
With
Backstop
Without
Backstop
With
Backstop
1A Shaft Assembly With 1A4 Gear 4729123 4729140 4729324 4729325 4729171 4729177
1A Shaft Assembly Without 1A4 Gear 4729125 4729142 4729326 4729327 4729172 4729178
1A1 Bearing 0921682 0921529 0921752 0921752 0921751 0921751
1A2 Bearing 2915106 0921860 0921858 0921858 2918722 2918722
1A3 Pinion & Shaft - Includes Ref. #1A5 4729127 4729144 4729322 4729323 4729173 4729181
1A4 Gear 1238081 1238034 1238073 1238073 0359007 0359007
5A Backstop Assembly 0769170 0757220 . . . 6720194 . . . 6720194
Rotating Elements - J25 Without
Backstop
With
Backstop
Without
Backstop
With
Backstop
1A Shaft Assembly With 1A4 Gear 4729124 4729141 4729330 4729331 4729175 4729179
1A Shaft Assembly Without 1A4 Gear 4729126 4729143 4729332 4729333 4729176 4729180
1A1 Bearing 0921349 0921494 0921752 0921752 0921751 0921751
1A2 Bearing 2915107 0921859 0921857 0921857 2918722 2918722
1A3 Pinion & Shaft - Includes Ref. #1A5 4729128 4729145 4729328 4729329 4729174 4729182
1A4 Gear 1238082 1238035 1238074 1238074 0359007 0359007
5A Backstop Assembly 0769170 0757221 . . . 6720195 . . . 6720194
Continued on next page

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
(PN-212395)
Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 16 of 53) Sizes 5407-5608
Table 11 — Parts List of Falk Part Numbers (Continued)
Ref.
No. Part Description Drive Size
5407 5415 5507 5608
Rotating Elements - J14 & J25 Without
Backstop
With
Backstop
Without
Backstop
With
Backstop
2A Shaft Assembly - Includes Ref. #2A1 - 2A4 4729131 4729146 4729159 4729159 4729183 4729183
2A1 Bearing 0921780 0921556 0921752 0921752 0921678 0921678
2A2 Bearing 0921780 0921556 0921530 0921530 0921678 0921678
2A3 Pinion & Shaft - Includes Ref. #2A4 4729132 4729147 4729160 4729160 4729184 4729184
4A Shaft Assembly - Includes Ref. #4A1 - 4A5 4729133 4723150 4729163 4729163 4729189 4729189
4A1 Bearing 2905186 0921861 0921755 0921755 2905910 2905910
4A2 Bearing 2905186 0921861 0921755 0921755 2905910 2905910
4A3 Hollow Shaft - Includes Ref. #4A5 4729134 4723149 4729164 4729164 4729190 4729190
4A4 Gear 1238083 1238033 1238072 1238072 1237487 1237487
4A6 Spacer . . . . . . . . . . . . 1237496 1237496
6A Fan Assembly 0785773 0785881 0785893 0785893 0785468 0785468
6A1 Fan 4729135 4729135 4729165 4729165 4729192 4729192
6A2 Guard 4729136 4729151 4729166 4729166 4729193 4729193
6A3 Backplate 4729137 4729152 4729167 4729167 4729194 4729194
Table 12 — Bearing Gross Reference
Numbers
Falk Part Number Manufacturer's Number
Tapered Roller Bearings 
0921349 HM212046/HM212011
0921494 H715336/H715311
0921529 H715345/H715311
0921530 H414249/H414210
0921556 H715332/H715311
0921678 850/832
0921682 HM212049/HM212011
0921751 JH217249/JH217210
0921752 JH415647/JH415610
0921755 JM736149/JM736110
0921780 HM212044/HM212011
0921855 5584/5535
0921857 65212/65500B
0921858 65237/65500B
0921859 65200/65500B
0921860 65225/65500B
0921861 67782/67720
0921863 5565/5535
2905186 LM330448/LM330410
2905910 LM742749/LM742710
2915106 HM807040/HM807015B
2915107 HM807035/HM807015B
2918722 HH814542/HH814510
cRexnord suppliers of Tapered Roller Bearings are: Timken, Bower and
Tyson.
Table 13 — Seal Cross Reference Number
Falk Part Number Manufacturer's Number 
Chicago Rawhide National
0912992 22449 . . .
0913004 64998V . . .
2914622 24899 . . .
2914624 70054 . . .
2916797 21091 . . .
2917238 22361 . . .
2920284 29383 . . .
2921418 85018 . . .
2921422 29912 415995V
2922296 60013 . . .
Subject to substitution of equivalent seals without notice.

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk Quadrive Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 17 of 53)
Section III
DRIVE REASSEMBLY
REFER TO PARTS DRAWING FIGURE 14.
1. GENERAL
a. Clean all parts to be reassembled and coat all taper
roller bearing cups and pinion teeth with oil. DO
NOT lubricate gear teeth prior to assembly on shaft.
b. Heat all tapered roller bearing cones in an oven to
275°F (135°C).
CAUTION: Do not apply flame directly to bearings
or rest bearings directly on a heated surface.
c. Slide or press all bearing cones tight against the
shaft shoulder or spacer.
CAUTION: Do not apply force to the bearing cage or
rollers. Apply force against the cone only.
2. ASSEMBLY OF TAPERED ROLLER BEARING CUPS
— Where bearings will be reused and where bearing
cups were not removed from the housing, skip to
Step 3. It is recommended that bearings be replaced
whenever drive is disassembled after being in service.
Install bearing cups only in housing base at this time.
Coat bearing cups and housing bores with an SAE
20 (or heavier) oil and drive or press cup squarely
into the housing bores until positioned as shown in
Figures 15 and 16. Use a flat plate and a brass bar to
avoid damaging the bearing cups. NOTE: The exact
positioning of the bearings in the bores will be achieved
during the bearing adjustment procedure in Step 6.
CAUTION: Take care not to allow cups to cock during
their installation as this could result in permanent
damage to housing.
If cups become cocked in the bores, tap the high side
lightly to re-position.
3. Assemble seal cages to housing output side(base) as
follows:
a. Turn housing onto its side being careful that the
bearing cups do not fall out of the bores. Assemble
low-speed seal cage without seal and one .015”
(0.38 mm) shim-gasket, Ref. #11 or 12 and 24. Cross
tighten fasteners, Ref. #34, to torque specified in
Table 14.
Check to be sure that cages and covers are
registered on the bearing cups to avoid hanging up
of the cups.
MOUNTING
SURFACE
U
MOUNTING
SUFACE
C
THRUST
PLATE
FASTENER
Figure 15
4A2
LOW-SPEED SHAFT
BEARING BORE
2A2
INTERMEDIATE
PINION BEARING BORE
1A2
HIGH-SPEED SHAFT
BEARING BORE
Figure 16
Table 14 — Fastener Tightening Torques 
Location
Fastener Size — Inch
Tightening Torque — lb-ft (Nm)
.375-16 .500-13 .750-10 .875-9
Low-Speed Seal Cage . . . . . . 330 (447) 533 (723)
Intermediate End Cover 27.5 (37,3) 68.8 (93,2) . . . . . .
High-Speed Seal Cage/
End Cover 27.5 (37,3) 68.8 (93,2) . . . . . .
Housing Cover . . . 68.8 (93,2) 245 (332) . . .
cTorques are for non-lubricated fasteners.
b. Assemble intermediate end cover and one .015”
(0.38 mm) shim-gasket, Ref. #15 and 25. Cross
tighten fasteners, Ref. #35, to torque specified in
Table 14.
c. Assemble high-speed pinion shaft cover or seal
cage without seal as follows:
SIZES 5407-5608 WITHOUT BACKSTOP —
Assemble shaft cover and one .015” (0.38 mm)
shim-gasket, Ref. #17 and 27. Cross tighten
fasteners, Ref. #37, to torque specified in Table 14.
SIZES 5407 & 5415 WITH BACKSTOP — Assemble
shaft cover, 1st .015” (0.38 mm) shim-gasket,
backstop cage and 2nd .015” (0.38 mm) shim-
gasket, Ref. #19, 20, 29 and 30. Finger tighten
fasteners, Ref. #38. NOTE: The backstop, Ref. #5A
will be added later.
SIZES 5507 & 5608 WITH EXTERNAL BACKSTOP
— Assemble seal cage without seal and one .015”
(0.38 mm) shim-gasket, Ref #31 and 66. Cross
tighten fasteners to torque specified in Table 14.
NOTE: The seal, Ref. #64, will be added later.

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
(PN-212395)
Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 18 of 53) Sizes 5407-5608
4. SHAFT ASSEMBLIES — Where bearings and gears
were not removed from the shafts, skip to Step 5. If
bearings and gears were removed from the shafts,
reassemble parts on the shaft per Figures 17 thru 20 as
follows:
a. To assemble gear (Ref. #1A4 or 4A4), heat gear in
an oven to 325°F (163°C). Install key. Press gear
onto the shaft tightly against the shoulder. For size
5608, be sure to place spacer, Ref. #4A6, Figure 20,
in the proper location on shaft assembly, Ref. #4A,
before pressing on the bearing.
b. To assemble bearings, heat bearing cone in an oven
to a maximum of 275°F (135°C), then slide or press
bearing cone tight against the shaft shoulder or
spacer.
CAUTION: Allow assembly to cool. Apply a coat of
oil to the cooled bearings and gear teeth to lubricate
& avoid scoring of the working surfaces.
1A1
BEARING
SHAFT
EXTENSION
1A3
PINION/SHAFT
BACKSTOP
END
(SIZES 5407 & 5415) 1A2
BEARING
SHAFT
EXTENSION
SIZES 5507 & 5608
(BACKSTOP)
5. DRIVE ASSEMBLY — Turn drive housing base on
work bench to allow the shaft assemblies to be lowered
into the housing. Block up the housing so that when
low-speed shaft assembly, Ref. #4A, is in place, the
threaded end of the shaft will clear the bench surface.
Before assembly, inspect housing and all shaft
assemblies to see that all foreign matter has been
removed.
a. SINGLE REDUCTION — Lower high-speed shaft
assembly, Ref. #3A, Figure 18, into housing and tip
away from other housing bores. While lowering the
low-speed shaft assembly, Ref. #4A, Figure 20, into
housing tip high-speed shaft into the gear mesh of
the low-speed gear as the shaft nears final position.
Figure 17 — 1A Shaft
b. DOUBLE REDUCTION — Lower high-speed shaft
assembly, Ref. #1A, Figure 17, into housing and tip
away from other bores. Simultaneously lower the
intermediate shaft assembly, Ref. #2A, Figure 19,
and the low-speed shaft assembly, Ref. #4A, Figure
20, into the housing. As shafts approach their final
position, tip the high-speed shaft pinion into the high
-speed gear mesh, Ref. #1A4.
3A1
BEARING
3A3
PINION/SHAFT
3A2
BEARING
SHAFT
EXTENSION
Figure 18 — 3A Shaft Assembly
1A4
GEAR
2A3
PINION/SHAFT
2A1
BEARING
2A2
BEARING
2A4
KEY
Figure 19 — 2A Shaft Assembly
4A6
SPACER
(5608 ONLY)
4A3
HOLLOW
SHAFT
4A2
BEARING
4A4
GEAR
4A1
BEARING
4A5
KEY
Figure 20 — 4A Shaft Assembly

Rexnord 378-206
3001 W. Canal St., Milwaukee, WI 53208-4200 USA January 2019
Telephone: [phone] Fax: [phone] www.rexnord.com Supersedes 07-15
(PN-212395)
Falk Quadrive Shaft-Mounted Drives Model A •Owners Manual
Sizes 5407-5608 (Page 19 of 53)
c. Arrange the shaft assemblies to ensure that the
gears are in mesh and bearing cones are in the
cups.
d. Apply a bead of Loctite Gasket Eliminator #515 or
equivalent to housing base as shown in Figure 21.
Carefully lower the housing cover (using eyebolts
as recommended in Section II, Step 11). Remove
eyebolts. Install taper screw dowels through the
housing cover into the housing base. NOTE: Be sure
the nut on the taper screw dowel is loose so that the
nut does not interfere with seating the taper screw
dowel. Seat taper screw dowel into housing base
by striking the head of the taper screw dowel with a
hammer. Install cover fasteners and immediately (within
3 minutes) tighten to torque specified in Table 14.
e. Apply film of oil to housing cover bores and bearing
cups & carefully install the bearing cups into the
bores as described in Step 2.
f. Install seal cages without seals and covers:
DOUBLE REDUCTION DRIVES — Use the entire
shim-gasket kit with the .015” (0.38 mm) shim-
gasket against the housing. It is important that the
.015” (0.38 mm) shim-gasket be placed against the
housing to prevent leakage. Cross tighten fasteners
to torques specified in Table 14. Parts involved are
as follows:
Low-speed seal cage Ref. #11, 24 & 34; shaft cover
Ref. #16, 26 & 36; high-speed seal cage Ref. #21, 31
& 39.
SINGLE REDUCTION DRIVES — Install end cover,
Ref. #16, with one .015” (0.38 mm) shim-gasket,
Ref. #26, on unused bore. Cross tighten fasteners,
Ref. #36, to torque specified in Table 14. For the
other seal cages follow instructions from above as
described for double reduction drives.
6. BEARING ADJUSTMENT
a. FOR DRIVES EQUIPPED WITH TA TAPER
BUSHING — Turn drive over onto the input housing
and carefully thread bushing nut onto hollow
shaft threads. Rotate the shaft to seat the cone
assemblies in the bearing cups. Set up a dial
indicator, Figure 22. Rotate and oscillate shaft with
axial force applied in both directions to obtain the
shaft axial float measurement (upward force can
be applied by prying the bushing nut upward). If
no float is measured, remove bushing nut and seal
cage & add shim-gaskets until float is measurable.
Proceed to Step 6(c).
b. FOR DRIVES WITHOUT THE TA TAPER BUSHING
— Insert the hollow shaft thrust plate and secure
with the retaining ring as illustrated in Section I,
LOCTITE GASKET
ELIMINATOR #515
OR EQUIVALENT
Figure 21
Figure 4. Thread a bolt into the thrust plate. Set up
a dial indicator on the input housing face with the
indicator probe on the end of the hollow shaft. DO
NOT indicate from the thrust plate or fastener head.
Rotate and oscillate shaft with axial force applied in
both directions to obtain the axial float measurement
(Upward force can be applied by prying the head
of the thrust plate bolt upward). If no float is
measured, remove seal cage and add shim-gaskets
until float is measurable.
c. If the axial float from 6(a) or (b) is greater than
.010” (0.25 mm), subtract sufficient shims to obtain
.001” to .010” (0.03 mm to 0.25 mm) float. Refer
to Table 15 for shim thickness. Take into account
the compressibility of shim-gaskets from Table 16.
Reassemble and repeat Step 6(a) or (b). When
float is within .001” to .010” (0.03 mm to 0.25 mm),
proceed to Step 6(d).
DIAL INDICATOR TIP MUST
REST ON QUILL SHAFT AND
NOT ON NUT SURFACE
DIAL INDICATOR
WITH STAND
BUSHING NUT
THREADED ON
QUILL SHAFT
PRY BAR
Figure 22
Table 15 — Individual Shim-Gasket Part
Numbers
Ref. No.
Shim
Thickness
Inches (mm)
DRIVE SIZE
5407 5415 5507 5608
100 . . . 0786841 0785587 0786843 0786844
24
0.007 (0.18) 1231144 1220259 1220130 1231222
0.009 (0.23) 0767761 0757456 0757453 0767802
0.015 (0.38) 0767762 0757457 0757454 0767803
0.031 (0.79) 0767763 0757458 0757455 0767804
25 0.015 (0.38) 0755904 0757460 0757460 3200133
26
0.007 (0.18) 1219682 1220540 1220128 0761568
0.009 (0.23) 0755903 0757459 0755947 0761569
0.015 (0.38) 0755904 0757460 0755948 3200133
0.031 (0.79) 0755905 0757461 0755949 . . .
27 & 28 0.015 (0.38) 0755904 1220129 0757460 0710703
29 & 30 0.015 (0.38) 0755904 1220129 1220129 . . .
31
0.007 (0.18) 1219682 1220540 1220128 1130518
0.009 (0.23) 0755903 0757459 0755947 0710702
0.015 (0.38) 0755904 0757460 0755948 0710703
0.031 (0.79) 0755905 0757461 0755949 . . .
Table 16 — Falk Shim-Gasket Compressibility
Thickness
Inches (mm)
New 0.007 (0.18) 0.009 (0.23) 0.015 (0.38) 0.031 (0.79)
Compressed 0.006 (0.15) 0.008 (0.20) 0.013 (0.33) 0.028 (0.71)

378-206 Rexnord
January 2019 3001 W. Canal St., Milwaukee, WI 53208-4200 USA
Supersedes 07-15 Telephone: [phone] Fax: [phone] www.rexnord.com
(PN-212395)
Owners Manual •Falk Quadrive Shaft-Mounted Drives Model A
(Page 20 of 53) Sizes 5407-5608
d. Refer to Table 17 and note the preload specified for
bearings Ref. #4A1 and 4A2. Add to the upper and
lower limits shown, the axial movement obtained in
Step 6(c). This will indicate the thickness of shims
to be removed to obtain the specified preload. For
example, if the preload in Table 17 is .005” to .007”
(0.13 mm to 0.18 mm) and the axial movement
was .007” (0.18 mm), removal of shims with a total
thickness of .012” to .014” (0.31 mm to 0.36 mm)
will produce the desired preload. Table 15 provides
shim thicknesses for each shim pack to assist in
obtaining the desired results. Take into account the
compressibility of shim-gaskets from Table 16.
e. Remove seal cage, Ref. #11, and remove shim-
gasket(s) as determined in Step 6(d). Reattach the
seal cage and tighten fasteners to torque specified
in Table 14.
Table 17 — Preload & Axial Settings –
Inch (mm)
Drive
Size
Bearings
Ref. #4A1 & 4A2
Shaft & Pinion
Ref. #2A3
Shaft & Pinion
Ref. #1A3 or 3A3
Bearing Preload Axial Float Axial Float 
5407 .004-.006 (0.10-0.15)
.001-.003 (0.03-0.08) .001-.003 (0.03-0.08)
5415 .005-.007 (0.13-0.18)
5507 .006-.008 (0.15-0.20)
5608 .008-.010 (0.20-0.25)
cNOTE: For Sizes 5407 & 5415 equipped with a backstop, axial float
measurement must be within the following range: .001 preload to .001
float.
f. AXIAL FLOAT ADJUSTMENT, REF. #2A3 — Remove
pipe plug from center of shaft cover, Ref. #16, and
install a .375-16 x 2” or longer fastener thru the hole
in the shaft cover into the threaded hole in the pinion
shaft. Turn by hand until snug. Set up a dial indicator
with the probe on the fastener head as illustrated in
Figure 23. Turn the fastener in a clockwise direction,
pushing and pulling the fastener to make certain
the bearings are properly seated. Measure the axial
float. Subtract from this reading the axial float for
Ref. #2A3 shaft found in Table 15. This indicates the
thickness of shims to be removed. When removing
the shim(s) retain the .015” (0,38 mm) thickness
against the drive housing. Retighten fasteners and
recheck float. Readjust shimming, if necessary, until
proper axial float is achieved (Table 17).
g. AXIAL FLOAT ADJUSTMENT, REF. #1A3 or 3A3 —
Refer to Figure 24 and adjust float as follows:
Set up a dial indicator for determining axial
movement of the high speed shaft Ref. #1A3 or
3A3. Lift upward with a twisting motion to obtain a
reading.
WARNING: Cover keyway with tape to avoid
lacerations to the hand.
Subtract from this reading the axial float for shaft,
Ref. #1A3 or 3A3, found in Table 15. This indicates
the thickness of shim(s), Ref. #31, to be removed.
When removing the shim(s), retain the .015”
(0.38 mm) thick shim against the housing, Ref. #10.
Retighten fasteners and recheck float. Readjust
shimming, if necessary, until proper float is achieved
(Table 17).
7. SEAL INSTALLATION
Seals can be installed after all bearing adjustments
have been completed. Refer to Section II, Step 7, to
install seals, Ref. #22 & 23. NOTE: When removing a
seal cage to install a seal, be sure to replace the same
shim-gaskets as removed to assure correct bearing
adjustments.
8. BACKSTOP INSTALLATION
If drive will be installed on the driven equipment
using the thrust plate and thrust plate fastener, install
the backstop at this time. Refer to Appendix B, for
installation instructions.
DRIVE IS READY TO INSTALL — Refer to Section I.
TURN AND MOVE
BOLT TO CHECK
FLOAT
REF. #16 COVER
REF. #26 SHIM-GASKET
REF. #2A3
PINION
Figure 23
REF. #1A3/3A3
PINION & SHAFT
REF. #21 SEAL CAGE
REF. #31 SHIM-GASKET
Figure 24