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H7762 Heavy Duty Tool Grinder
Wheel Care
Wheel Dressing
A large part of your safety while grinding depends
on the condition of the grinding wheel. A wheel in
poor condition may break apart during rotation,
causing serious injury.
To properly care for your wheel, follow these
tips:
• Always transport, store and handle wheels
with care. Wheels may be damaged if
dropped or if heavy objects are stacked on
them.
• Select the right grinding wheel for both the
job and the machine. DO NOT grind material
that is not designed for the wheel. A machine
that rotates at a higher RPM than the wheel
is rated for may cause the wheel to fly apart.
• Mount the wheels properly. (See the
"Replacing Wheels" instructions on Page 1
9
for guidance.) Never use a wheel with the
wrong arbor size for the grinder.
• DO NOT abuse the wheel by jamming the
workpiece into the grinding wheel with exces
-
sive force. This can cause irreparable dam
-
age to the wheel.
• Learn how to use the grinder and the grinding
wheels properly. Ask a trusted person with
experience or consult with your local library
to learn more.
• Dress the grinding wheel when the surface
loses its abrasive quality or becomes unbal
-
anced.
Dressing restores the grinding wheel with a like-
new abrasive quality. Whenever the front surface
of the wheel loses its abrasive qualities or balance
due to particle loading or polishing of the wheel
surface, then the wheel should be dressed. Use
a commercially-available dressing tool, such as
those available on Page 21
.
To dress the grinding wheel:
1. With the machine plugged into power, stand
to the side of the grinding wheel and move
the switch to the
ON position.
2. Allow the machine to run for at least one full
minute to make sure that the grinding wheel
is safe to use, then move to the front of the
machine.
3. Hold the dressing tool firmly on the tool rest
with both hands and press it lightly against
the front surface of the grinding wheel
.
4. Move the dressing tool in a side-to-side
motion, while keeping it even with the surface
of the grinding wheel.
5. Regularly pull the dressing tool away from the
wheel for visual inspection and repeat
Steps
3 & 4 until the surface of the wheel appears
to be restored to its normal color and bal
-
ance.
6. Depending on the type of metal, you may need
to regularly dip the workpiece into the water
cup to cool it off. For heat-intensive work,
direct a stream of water onto the workpiece
and grinding wheel with the flexible water
pipe. The flow of water can be increased or
decreased using the red valve just below the
water cup. If the water supply is exhausted,
stop grinding and refill the water cup.