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Standard Taper Bushings:
1.
One bushing assembly is required to mount the reducer
on the driven shaft. An assembly consists of two tapered
bushings, bushing screws and washers, two bushing backup
plates and retaining rings, and necessary shaft key or keys.
The driven shaft must extend through the full length of the
reducer. If the driven shaft does not extend through the
reducer do not use the standard tapered bushings; instead
use the short shaft bushings as described in the Short Shaft
Bushings section that follows. The minimum shaft length, as
measured from the end of the shaft to the outer edge of the
bushing flange (Figure 6), is given in Table 2.
2.
Install one bushing backup plate on the end of the hub and
secure with the supplied retaining ring. Repeat procedure
for other side.
3.
Place one bushing, flange end first, onto the driven shaft
and position per dimension "A", as shown in Table 2. This
will allow the bolts to be threaded into the bushing for future
bushing and reducer removal.
4.
Insert the output key in the shaft and bushing. For easy of
installation, rotate the driven shaft so that the shaft keyseat
is at the top position.
PLEASE NOTE – In most cases the keys that are
supplied with the bushing kit are NOT square keys, and
the orientation of the key is important. Install the key
so that it fits snugly in the width of the keyseat. The
keys are marked with a part number and some keys
are also etched with "THIS SIDE UP" – these markings
should be showing on the top of the key when it is
installed in the shaft keyseat, see Figure 5 below.
PART NUMBER AND MARKINGS
Figure 5- Key Marking
5.
Mount the reducer on the driven shaft and align the shaft key
with the reducer hub keyway. Maintain the recommended
minimum distance "A" from the shaft bearing.
6.
Insert the screws, with washers installed, in the unthreaded
holes in the bushing flange and align with the threaded holes
in the bushing backup plate. If necessary, rotate the bushing
backup plate to align with the bushing screws. Tighten the
screws lightly. If the reducer must be positioned closer than
dimension "A", place the screws with washers installed,
in the unthreaded holes in the bushing before positioning
reducer making sure to maintain at least 1/8" between the
screw heads and the bearing.
7.
Place the second tapered bushing in position on the shaft
and align the bushing keyway with the shaft key. Align the
unthreaded holes in the bushing with the threaded holes in
the bushing backup plate. If necessary, rotate the bushing
backup plate to align with the bushing holes. Insert bushing
screws, with washers installed in the unthreaded holes in the
bushing. Tighten screws lightly.
8.
Alternately and evenly tighten the screws in the bushing
nearest the equipment to the recommended torque given in
Table 2. Repeat procedure on outer bushing.
Short Shaft Bushings:
1.
One bushing assembly is required to mount the reducer
on the driven shaft. An assembly consists of one long
tapered bushing, one short tapered bushing, one tapered
bushing wedge, bushing screws and washers, two bushing
backup plates and retaining rings, and necessary shaft key
or keys. The driven shaft does not need to extend through
the reducer for the short shaft bushing to operate properly.
The minimum shaft length, as measured from the end of the
shaft to the outer edge of the bushing flange (Figure 5), is
given in Table 1.
MINIMUM SHAFT LENGTH
Figure 6 – Minimum Recommended Dimensions
Table 2 – Minimum Mounting Dimensions and Bolt Torques
Minimum Required Shaft Length
Reducer Size
Standard Taper Bushing (inch)
TA0107L
TA0107L
TA1107H
TA2115H
TA3203H
TA4207H
TA5215H
TA6307H
TA7315H
TA8407H
TA9415H
TA10507H
TA12608H
Bushing Screw Information and Minimum Clearance for Removal
Reducer Size
Fastener Size
TA0107L
5/16-18
TA1107H
5/16-18
TA2115H
3/8-16
TA3203H
3/8-16
TA4207H
3/8-16
TA5215H
1/2-13
TA6307H
1/2-13
TA7315H
1/2-13
TA8407H
1/2-13
TA9415H
5/8-11
TA10507H
5/8-11
TA12608H
5/8-11
3
A
Short Shaft
Bushing (inch)
6.83
4.32
6.83
4.32
6.95
4.43
7.80
4.80
8.55
5.46
8.94
5.66
10.33
6.35
10.82
6.72
11.87
7.62
12.82
8.10
13.74
8.56
15.46
9.67
18.32
11.60
Torque in lb-ft
A (inch)
20-17
1.08
20-17
1.20
20-17
1.20
20-17
1.20
26-23
1.48
77-67
1.81
77-67
1.81
77-67
2.06
77-67
2.06
86-75
2.39
86-75
2.39
86-75
2.39
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