Grain Systems Bucket Elevtors, Conveyors, Series II Sweeps PNEG-1204 - Manual (Page 45)

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 (see Figure 5), is given in Table 1.
A
MINIMUM SHAFT LENGTH
Figure 5 – Minimum Recommended Dimensions
Table 1 – Minimum Mounting Dimensions and Bolt Torques
Minimum Required Shaft Length
Reducer Size Standard Taper Bushing Short Shaft Bushing
TA0107L 6.83 4.32
TA1107H 6.95 4.43
TA2115H 7.80 4.80
TA3203H 8.55 5.46
TA4207H 8.94 5.66
TA5215H 10.33 6.35
TA6307H 10.82 6.72
TA7315H 11.87 7.62
TA8407H 12.82 8.10
TA9415H 13.74 8.56
TA10507H 15.46 9.67
TA12608H 18.32 11.60
Bushing Screw Information and Minimum Clearance for Removal
Reducer Size Fastener Size Torque in Ft.-Lbs. A
TA0107L 5/16-18 20 – 17 1.08
TA1107H 5/16-18 20 – 17 1.20
TA2115H 3/8-16 20 – 17 1.20
TA3203H 3/8-16 20 – 17 1.20
TA4207H 3/8-16 26 – 23 1.48
TA5215H 1/2-13 77 – 67 1.81
TA6307H 1/2-13 77 – 67 1.81
TA7315H 1/2-13 77 – 67 2.06
TA8407H 1/2-13 77 – 67 2.06
TA9415H 5/8-11 86 – 75 2.39
TA10507H 5/8-11 86 – 75 2.39
TA12608H 5/8-11 86 – 75 2.39
2. The long bushing is designed to be installed from the side of
the reducer opposite the driven equipment as shown in Figure 6.
The long bushing when properly installed is designed to capture
the end of the customer shaft that does not extend through the
reducer. Normally the reducer would be mounted such that the
input shaft extends from the side of the reducer opposite the
driven equipment however the reducer design allows installation
of the reducer to be mounted in the opposite direction.
3. Install the tapered bushing wedge into the hollow bore of the
reducer from the same side as the long bushing will be installed.
When installing the tapered bushing wedge into the reducer
hub, install the flange end first so that the thin taper is pointing
outwards towards the long bushing as shown in Figure 6. The
wedge is properly installed when it snaps into place in the
reducer hub.
Figure 6 – Short Shaft Bushing and Output Hub Assembly
4. Align the tapered bushing wedge keyway with the reducer
hub keyway. The keyway in the wedge is slightly wider than the
keyway in the reducer hub allowing for easier installation.
5. Install one bushing backup plate on the end of the hub and
secure with the supplied retaining ring. Repeat procedure for
other side.
6. Install the short bushing; flange first, on the driven shaft and
position per dimension “A”, as shown in Table 1. This will allow
the bolts to be threaded into the bushing for future bushing and
reducer removal.
7. 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.
8. 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.
9. 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.
10. Place the long bushing in position on the shaft and align the
bushing keyway with the shaft key. Use care to locate the long
bushing with the tapered bushing wedge installed earlier. 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.
11. Alternately and evenly tighten the screws in the bushing
nearest the equipment to the recommended torque given in
Table 1. Repeat procedure on outer bushing.
40 PNEG-1204 Enclosed Belt Conveyors