SKU 65519
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Page 12
guard (15)
inner Flange (18)
Outer Flange (20)
loosen these
screws to
rotate guard
installing a grinding Wheel
Before installing a grinding wheel,
1.
review the warnings on pages 4 - 7.
The Grinding Wheel MUST be:
rated to at least 10,000 RPM,
•
no larger than 4-1/2” in diameter,
•
fitted with a 7/8” round arbor hole,
•
1/4” thick or less,
•
a type of grinding wheel suitable for
•
surface grinding, not edge grinding.
dry and clean,
•
proven undamaged by inspec-
•
tion and by the ring-test explained
below.
Press in and hold the Spindle Lock
2.
(1) to prevent the Spindle (17) from
turning.
Remove the Outer Flange (20). Keep
3.
the Inner Flange (18) in position on
the Spindle.
Closely inspect the Grinding Wheel
4.
before mounting. Perform a ring-test
on the wheel (unless wheel is smaller
than 4” or is an unusual shape) as
follows:
Suspend wheel using a pin or finger
a.
through the arbor hole.
tap
Wheel
here
45°
45°
45°
45°
hang
Wheel
from
pin
V
e
r
t
i
c
A
l
c
e
n
t
e
r
b.
Tap the flat side of the wheel with a
light non-metallic object, such as a
screwdriver handle, at a point 45°
from the vertical center line on each
side of the wheel and 1 – 2 inches
from the edge of the wheel (see Il-
lustration).
Rotate the wheel 45 degrees and
c.
repeat the test until the entire wheel
has been checked.
An undamaged wheel will give a
d.
clear tone. If cracked, there will be a
dead sound and not a clear ring.
Slip the grinding wheel onto the Spin-
5.
dle with a paper gasket, or blotter,
first. The blotter should be centered
on the grinding wheel and the wheel
and blotter should rest flat against the
Inner Flange.
WArning: to prevent serious
injury, blotters must be used for all
grinding wheels they are provided
with. Blotters help prevent grind-
ing wheel damage and wheel slip-
page, causes of wheel failure.
Thread the Outer Flange Arbor Nut
6.
onto the Spindle. Wrench tighten
only enough so that the wheel is se-