Wheel Inspection - Grizzly T10814 Owner's Manual

Wheel Inspection

Before installing a grinding wheel, it must always
be inspected. DO NOT assume that a wheel is
in sound condition just because it is new. Often,
damage can occur during shipping, with age, or
with exposure to moisture.
A damaged grinding wheel can fly apart at high
RPM, throwing pieces of abrasive at the operator
and anyone in the vicinity.
First, do a Visual Inspection. Look for any
cracks, chips, nicks or dents in the surface of the
wheel. If you see any of these, DO NOT use the
wheel.
Second, do a Ring Test. This test will give you an
indication of any internal damage that may not be
obvious during a visual inspection.
A damaged grinding wheel can fly apart
and eject chunks of abrasive material with
great force, causing serious injury or death.
Inspect every grinding wheel before it is
mounted. DO NOT use a damaged grinding
wheel!
To perform a ring test:
1.
Make sure wheel is clean and dry; otherwise,
you may get false results.
2.
Balance wheel with your finger in hole. If this
is not possible, hang the wheel in the air with
a piece of cord or string looped through hole
in center.
Model T10814 (Mfd. Since 5/15)
3. At points shown in Figure 9, gently tap wheel
with light, non-metallic device such as handle
of screwdriver or a wooden mallet.
Rated 3500 RPM
Make sure your grinder is not
faster than the rated RPM of this wheel
Type-1
Aluminum
Oxide
WARNING
Grinding can be dangerous
Visually inspect this wheel
for cracks, nicks,chips
Figure 9. Tapping locations when performing a
ring test.
4. An undamaged wheel will emit a clear metal-
lic ring or "ping" sound in each of these spots.
A damaged wheel will respond with a dull
thud that has no clear tone.
5. If you determine from the ring test that the
wheel is damaged, DO NOT use it!
STOP
60 Grit
Grade L
Vitrified Bond
-19-