be pried open slightly). Rotate shaft so that external
keyway in bushing is at the 12 o’clock position. Insert
drive key furnished with bushing into bushing keyway.
Proceed to Step 3.
3. Using a sling, safely lift gear drive so that hollow output
shaft is in the horizontal position. Rotate hollow shaft so
that keyway is aligned with driven shaft/bushing key.
Position and slide drive onto driven shaft taking care that
driven shaft key seats into hollow shaft keyway. DO NOT
hammer or use excessive force.
4. Thread bushing nut onto 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 TAPERED SURFACE OF BUSHING AND
HOLLOW SHAFT BORE FREE FROM ALL ANTI-SEIZE OR
LUBRICATING COMPOUNDS.
5. Tighten nut as instructed in one of the following methods.
PREFERRED METHOD —
Using a spanner (Table 7)
chain or pipe wrench, tighten bushing nut to the torque
value specified in Table 7. Note: For applications where
external vibratory or transient loads may act on drive and
cause setscrews to become loose, apply Loctite 243 or
equivalent to threads of setscrew. Tighten setscrew on
bushing nut.
ALTERNATE METHOD —
(Use this method when torque
cannot be measured.) Using a spanner (Table 7), chain
or pipe wrench, tighten bushing nut just until 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 nut hand tight. Mark a spot on
top of driven shaft. Mark a spot on bushing nut 180° from
the driven shaft mark (90° CCW for Sizes 05UB & 06UB).
Using a spanner wrench, tighten nut CW one half turn until
the two marks are aligned (one quarter turn for Sizes 05UB
& 06UB). Note: For applications where external vibratory
or transient loads may act on drive and cause setscrew to
become loose, apply Loctite 243 or equivalent to threads
of setscrew. Tighten setscrew on bushing nut.
Removal
WARNING:
Drive must be supported during removal process.
Use a sling around the gear drive and take up slack before
proceeding.
1. Loosen setscrew on bushing nut located at output end of
hollow shaft.
2. Use a spanner (Table 7) pipe or chain wrench to loosen
bushing nut. Initially, bushing 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 bushing nut until it is free from
the hollow shaft.
3. Prepare drive for lifting by disconnecting torque arm at
drive end. Slide drive from bushing. Note: Bushing can be
left in place or removed, as required. If bushing will not
slide off of shaft, insert a small pry bar into split of
bushing and pry split open slightly to loosen bushing and
remove from shaft.
SHAFT MOUNTED DRIVES USING A SHRINK DISC
DEVICE
Installation
Shrink discs can be supplied with shaft mounted drives. The
following procedures should be followed when fitting or
removing drives from the driven shaft.
1. Release locking screws gradually and in succession.
Initially a quarter of a turn on each screw will avoid tilting
and jamming – do not remove locking bolts completely.
2. Remove shrink disc from gear drive hollow shaft.
3. Clean and degrease locating diameters of gear drive
hollow shaft, driven shaft and shrink disc locating
diameter on hollow shaft extension.
4. Draw the gear drive onto the driven shaft (See Figure 10).
5. Grease tapered surfaces of outer ring and inner ring with
Molykote 321R or similar.
The Falk Corporation, P.O. Box 492, Zip 53201-0492
288-400
3001 W. Canal St., Zip 53208-4200, Milwaukee, WI USA Telephone : 414-342-3131
November 2002
Fax: 414-937-4359 e-mail: [email protected] web: www.falkcorp.com
Supersedes 10-98
®
Ultramite ®
•
Installation & Maintenance Instructions
Type UB
•
Sizes 03 thru 12
(Page 7 of 12)
CUSTOMER’S SHAFT
LOCKING
SCREW
NOTE: ONLY AVAILABLE AS
STANDARD IN THIS HANDING,
CONTACT FALK FOR OPPOSITE
HANDING.
DRIVEN
MACHINE
SIDE
END
PLATE
FIGURE 10
Table 8 — Tightening Torque – lb-in.
SIZE
Locking Screws Torque (lb-in.)
03
257
04
275
05
257
06
257
07
310
08
515
09
515
10
885
12
1415
FIGURE 9
TABLE 7 — Spanner Wrench Type & Spanner
Nut Tightening Torque
DRIVE
SIZE
Adjustable Hook Spanner Wrench
Spanner Nut Tightening
Torque lb-ft (Nm)
Armstrong Tools
Williams
05UB
34-307 (2.00" - 4.75")
474
83 (113)
06UB
34-307 (2.00" - 4.75")
474
83 (113)
07UB
34-307 (2.00" - 4.75")
474
167 (226)
08UB
34-310 (4.50" - 6.25")
474A
167 (226)
09UB
34-310 (4.50" - 6.25")
474A
250 (339)
10UB
34-310 (4.50" - 6.25")
474A
250 (339)
12UB
34-313 (6.125" - 8.75")
474B
250 (339)
