7
WARNING
To reduce the risk of injury, the
operator should be instructed in
the use, care and protection of grinding wheels.
Grinding Wheel Selection
Use grinding wheels, and accessories that are:
• correct size as written on tool’s nameplate.
• rated at or above the RPM listed on the tool’s name
-
plate.
• correct accessory, wheel type and grit for the job.
Grinding is the cutting action of thousands of abrasive
grains on the face of a grinding wheel. When grinding
metals such as steel and iron, choose an aluminum
oxide grinding wheel. Select a silicon carbide grinding
wheel for stone and concrete. Use cotton reinforced
wheels for non-ferrous metals.
Type 27 reinforced 1/8" thick or less Cut-Off Wheels
are suited for small cut-off and shallow notching
operations only. Always handle wheels carefully to
avoid damage. Before installing any wheel, always
inspect it for cracks. If wheel is cracked, discard it to
prevent others from using it.
Care of Grinding & Cut-Off Wheels
Grinding/cut-off wheels should be protected from:
• wetness and extreme humidity
• any type of solvent
• extreme changes in temperature
• dropping and bumping
Grinding and cut-off wheels should be stored:
• in an organized way so wheels can be removed
without disturbing or damaging other wheels
• with their safety information
Grinding and cut-off wheels should NOT be dropped,
rolled or bumped.
Discard wheels that have been dropped, rolled,
bumped, subjected to extreme changes in tempera
-
ture, or come into contact with solvents or wetness.
WARNING
Only use accessories with Maxi-
mum Safe Operating Speed rated
at least equal to the maximum speed marked on
the power tool. This speed is based on the
strength of the wheel, allowing for a reasonable
measure of safety. It is not meant to imply a best
or most efficient operating speed. Do not exceed
the Maximum Safe Operating Speed.
Installing/Removing Grinding Wheels
Make sure the wheel does not extend beyond the
bottom of the guard. Threaded hub grinding wheels
may require a deeper guard (see "Accessories").
1. Unplug tool and place it upside down on a level
surface as shown. Remove any accessories from
spindle.
WARNING!
Always unplug tool before
changing or removing accessories.
2. Thread nylon washer onto spindle. Attach guard
and grinding wheel.
NOTE:
When installing Type 27 or Type 29 grind
-
ing wheels, position disc nut according to wheel
thickness.
3. Position the guard in the location which offers best
control and guard protection. For operating zones
that provide maximum protection for the operator
.
4. Press in the spindle lock button while turning the
disc nut clockwise. Tighten securely.
5. To
remove
wheel, unplug the tool and reverse the
procedure.
Type 27 or
Type 29
grinding
wheel
with hub
Type 27
guard
Nylon washer
Spindle
1/4" thick
wheels
1/8" thick
or less
wheels
Disc nut position
Type 27
Flange
Type 27 or
Type 29
grinding
wheel
with flange
Type 27
guard
Disc nut
Type 28 guard
Nylon washer
Spindle
Type 28 grinding
wheel with hub
WARNING
To reduce the risk of personal in-
jury and damage to the tool, use
ONLY accessories rated at or above the RPM
listed on the “WARNING” section of the tool's
nameplate.
Sanding Disc and Grinding Wheel Material
Sanding discs and grinding wheels are made of
various materials and are designed for different jobs.
Be sure that you choose the proper sanding disc or
grinding wheel for the job you plan to do.
WARNING
To reduce the risk of injury, always
unplug tool before attaching or
removing accessories or making adjustments.
Use only specifically recommended accessories.
Others may be hazardous.
Sanding Disc Selection
Use sanding discs and accessories that are:
• correct size as written on tool’s nameplate.
• rated at or above the RPM listed on the tool’s name
-
plate.
• correct accessory, wheel type and grit for the job.
Select the correct type of sanding disc for your job.
Generally, use 24 or 36 grit for heavy stock removal;
50, 60, or 80 grit for medium stock removal and 120
grit for finishing. Always begin with a coarse grit, us
-
ing successively finer grits to obtain the desired finish.
