Falk
®
Ultramite
®
• Installation & Maintenance Instructions
(Page 6 of 15)
Type UJ • Sizes 302 thru 312
GR3-016
08/20 (Supersedes 01/18)
866-REXNORD/866-739-6673 (Within the U.S.)
© Rexnord Corporation. All Rights Reserved.
414-643-2366 (Outside the U.S.)
Table 5 — Torque Arm Tightening Torques – lb-ft (Nm)
DRIVE
SIZE
Foundation Hardware‡
Fastener
Size Grade 5
Steel Foundation
Concrete Foundation
302
0.375-16UNC
28 (38)
21 (28)
304
0.375-16UNC
28 (38)
21 (28)
306
0.375-16UNC
28 (38)
21 (28)
307
.500-13UNC
69 (94)
53 (72)
308
.500-13UNC
69 (94)
53 (72)
309
.625-11UNC
137 (186)
107 (145)
310
.750-10UNC
245 (332)
191 (259)
312
1.000-8UNC
567 (769)
467 (633)
‡
Fasteners listed are Grade 8
5. Identify a torque arm anchor location such that torque arm
angle will be within the limits illustrated in Figure 8 and the
supporting structure will be capable of withstanding the
toque arm reactions specified in Table 6. Secure anchor to
foundation using SAE grade 5 fasteners torqued to value
specified in Table 5.
Table 6 — Torque Arm Load Reaction – lbs (N)
★
DRIVE SIZE
Max Reaction Load
302
1200 (5335)
304
1700 (7560)
306
2800 (12455)
307
4100 (18235)
308
5700 (25355)
309
9300 (41365)
310
12100 (53820)
312
15890 (70700)
★
Load includes torque at startup (100% overload) with torque arm at maximum angle.
6. Connect rod end to anchor using anchor hardware provided.
Tighten fastener until seated against anchor. DO NOT bend
anchor as clearance between clevis and torque arm is
necessary.
7. Adjust length of torque arm by rotating turnbuckle until proper
orientation of gear drive with angle of torque arm is consistent
with limits illustrated in Figure 8. Tighten jam nuts against
turnbuckle and torque to value specified in Table 5.
Removal
For many types of gear drive service, it will not be necessary to
completely remove and/or disassemble the torque arm. However,
if necessary, the following procedure should be followed:
1. Disconnect rod end from torque arm anchor by removing
anchor hardware.
2. Disconnect rod clevis from gear drive housing. It may be
necessary to heat the rod clevis using a torch to loosen rod
clevis fastener.
3. Remove rod clevis from torque arm, loosen jam nuts and
remove rod ends from turnbuckle.
SCREW CONVEYOR INSTALLATION AND REMOVAL
INSTRUCTIONS
Installation
1. Separate contents from drive shaft kit. Install thrust plate and
retaining ring in hollow shaft as illustrated in Figure 9. For
sizes 302UJ and 304UJ drives with either 2.437" (61.9 mm) or
3.000" (76.2 mm) diameter drive shaft, place two (2) gaskets
and trough end spacer, packaged separately, over trough end
surface of seal housing as illustrated in Figure 10. Continue
assembling based on type of trough end seal to be installed:
(a) Waste Packing Seal, or (b) Lip Seal.
RETAINING
RING
THRUST PLATE
HOLLOW SHAFT
Figure 9
DRIVESHAFT
MECHANICAL
LIP SEAL
TROUGH END SPACER
(SIZES 302UJ & 304UJ WITH 2.437" &
3.000" DRIVE SHAFTS ONLY)
TROUGH END
GASKET
GASKET
Figure 10
(a) Waste Packing Seal (Figure 11) — Slide drive shaft
through seal housing. Insert key into drive shaft. Align
drive shaft key with keyway in hollow shaft and slide
drive shaft into hollow shaft. The seal housing has
a register fit with the basic drive. Install drive shaft
thrust plate fastener through thrust plate and torque
to the value specified in Table 5. Install seal housing
fasteners to secure seal housing to basic drive
housing. Refer to Table 7 for proper torque value. Pack
seal housing with waste packing through seal housing
windows. Proceed to Step 2.
(b) Lip Seal (Figure 10) — Coat outside diameter of
seal with Permatex #3 or equivalent. Drive seal into
seal housing with spring loaded seal lip away from
the driver. Wrap keyway on tapered shank of drive
shaft with masking tape or light weight Kraft paper to
protect against damaging seal lips. Coat seal lips and
straight portion of drive shaft with bearing grease.
Insert drive shaft into seal housing. Remove protective
wrap and install drive shaft key. Align drive shaft key
with keyway in hollow shaft and insert drive shaft into
hollow shaft. The seal housing has a register fit with
the basic drive. Install drive shaft thrust plate fastener
through thrust plate and torque to the value specified
in Table 5. Install seal housing fasteners to secure
