Southbend SB1023 - Manual (Page 26)

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For Machines Mfg. Since 8/09 Model SB1023 O P E R A T I O N
9. Set the wrenches aside and carefully remove
the wheel and hub assembly with the hub
puller still installed (Figure 27).
Figure 27. Wheel and hub removal.
12. To install the grinding wheel and hub,
complete the preceding steps in the reverse
order, but skipping the steps regarding hub
puller usage. After the grinding wheel and
hub are installed, many machinists still
choose to dress the grinding wheel. Refer to
Wheel Dressing on Page 25 for details.
10. Unthread the hub puller and set it aside.
11. Wipe the spindle and hub taper (Figure 28),
so the tapers are perfectly clean. Wiping the
threads and tapers with a lightly-oiled rag is
acceptable to prevent rust and still to allow
for a tight fit.
Figure 28. Spindle taper.
Spindle Taper
Hub
Taper
Do not assume that a wheel is in sound condition
just because it is new—damage can often occur
during shipping, with age, with prolonged
exposure to moisture, or because of improper
storage.
To inspect a wheel for damage:
1. Remove the wheel and look for any cracks,
chips, nicks or dents in the surface of the
wheel. If you see any of these, DO NOT
attempt to use the wheel.
2. Do a ring test. This test will give you an
indication of any internal damage that may
not be obvious during a visual inspection.
3. Inspect the paper washers on both sides
of the grinding wheel (Figure 29). These
washers are cushions between the spacer
washer and the grinding wheel seat. Without
the washers, cracks can be spawned from
the center of the wheel when the spanner
nut is tightened. Over time, these cracks can
radiate outward and the wheel may explode
during operation, possibly causing injury.
Wheel Inspection
Note: If you need to replace or install new paper
washers, replacements can be cut out of
any thick construction paper or card stock.
Regular notebook paper or paper from a copy
machine is not acceptable, as it is too thin
to provide the required cushion. Be sure to
transfer any RPM limitations and wheel type
information.
Figure 29. Important paper washer.
Paper
Washer