10. 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, recoat the nut threads only with an
anti-seize compound. KEEP THE TAPERED SURFACE OF
THE BUSHING AND HOLLOW SHAFT BORE FREE FROM
ALL ANTI-SEIZE OR LUBRICATING COMPOUNDS.
WARNING: Overtightening can fail the internal retaining
ring. (See Appendix G, for listing of retaining rings).
a. PREFERRED METHOD — Apply Loctite 243 or
equivalent to threads of setscrew. Tighten the setscrew on
the bushing nut to torque value indicated in Table 6A.
b. ALTERNATE METHOD — (To be used when torque
cannot 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 top of the driven shaft. Next mark a
spot on the bushing nut 180° from the driven shaft mark
(90° CCW for Sizes 5107 & 5115). Use the spanner
wrench to tighten the nut CW one half turn until the two
marks are aligned (one quarter turn for Sizes 5107 &
5115). Apply Loctite 243 or equivalent to threads of
setscrew. Tighten the setscrew on the bushing nut to torque
value indicated in Table 6A.
11. 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 14.
12. 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 shaft with the thrust
plate fastener. Refer to Table 3 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 15.
13. JSC — Assemble drive to trough and install drive shaft
Rexnord Industries, LLC 3001 W. Canal St., Milwaukee, WI 53208-4200 USA378-200 (PN-2128394)
Telephone: 414-342-3131 Fax: 414-937-4359November 2010
e-mail: info@rexnord.com web: www.rexnord.comSupersedes 6-07
Shaft Mounted Drives Model A
(Page 8 of 44) Sizes 5107-5315
2°2°
TORQUE ARM
FASTENER
HIGH
SPEED
SHAFT
HOUSING FLANGE
FASTENERS
CLEVIS
BRACKET
ANCHOR BRACKET
5107 & 5115
TABLE 6 — Spanner Wrench Type & Spanner
Nut Tightening Torque
DRIVE
SIZE
Adjustable Hook Spanner Wrench Spanner Nut
Tightening Torque
lb-ft (Nm)
Armstrong Tools Williams
5107 34-307 (2"-4 ¾”) 474 83 (113)
5115 34-307 (2"-4 ¾”) 474 83 (113)
5203 34-307 (2"-4 ¾”) 474 167 (226)
5207 34-310 (4 ½"-6 ¼”) 474A 167 (226)
5215 34-310 (4 ½"-6 ¼”) 474A 250 (339)
5307 34-310 (4 ½"-6 ¼”) 474A 250 (339)
5315 34-313 (6
1
/8"-8 ¾”) 474B 250 (339)
TABLE 7 — Torque Arm Clevis Bracket
Fastener Tightening Torque
DRIVE
SIZE
Fastener
H
Size
Tightening Torque — lb-ft (Nm)
Steel Foundation Concrete Foundation
5107 .375-16UNC 28 (38) 21 (28)
5115 .375-16UNC 28 (38) 21 (28)
5203 .500-13UNC 69 (94) 53 (72)
5207 .500-13UNC 69 (94) 53 (72)
5215 .625-11UNC 137 (186) 107 (145)
5307 .750-10UNC 245 (332) 191 (259)
5315 1.000-8UNC 567 (769) 467 (633)
H Grade 5 fasteners required.
TABLE 8 — Load Reaction Through Torque
Arm
DRIVE
SIZE
5107 5115 5203 5207 5215 5307 5315
Load
lb (N)
†
2440
(10850)
3810
(16940)
4680
(20810)
6250
(27790)
9160
(40720)
12963
(57660)
15890
(70700)
†
Load includes moment due to motor and motor mount with torque arm at
maximum angle.
2°
HIGH
SPEED
SHAFT
ANCHOR
BRACKET
TORQUE ARM
FASTENER
5203 THRU 5315
PREFERRED MOUNTING
CLEVIS
BRACKET
2°
HIGH
SPEED
SHAFT
ANCHOR
BRACKET
TORQUE ARM
FASTENER
5203 THRU 5315
ALTERNATE MOUNTING
CLEVIS
BRACKET
Figure 12
TABLE 6A — Bushing Nut Setscrew
Tightening Torque
DRIVE SIZE Setscrew Size
Tightening Torque
lb-ft ( Nm)
5107 .250-20 5 (7)
5115-5207 .312-18 11 (15)
5215-5315 .375-16 19 (26)
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