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page 8
Selecting Wheels
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" Cut-Off Wheels are suited for small cut-off and
shallow notching operations only.
Installing Grinding Wheels (Fig. 8, 9, & 10)
1. When guard is properly positioned, place flange on spindle with
flange facing away from tool.
2. Place selected wheel on spindle and align with flange. Position flange
nut according to wheel thickness (Fig. 8 & 9).
3. Press the spindle lock button while turning flange nut clockwise.
Tighten securely with the spanner wrench provided.
4. To remove wheel, unplug tool and reverse procedure.
To reduce the risk of injury, do not use the
spindle lock button to stop the spindle while the
tool is in use or is coasting after shut-off. This will
result in tool damage.
WARNING!
Grinding (Fig. 11)
1. If you have just installed a grinding wheel or are just beginning a
period of work, test wheel by letting it spin for one minute before
applying it to the workpiece.
NOTE: Out-of-balance wheels can mar workpiece, damage the tool,
and cause stress to wheel that may cause wheel failure.
2. Firmly grasp body of tool and side handle before starting and while
using tool. Allow wheel to come to full speed before starting to grind.
3. When grinding, hold sander/grinder at a 5
o
to 15
o
angle, using con-
stant pressure for a uniform finish. Too great an angle causes con-
centrated pressure on small areas which may gouge or burn work
surface.
4. Control pressure and surface contact between disc and workpiece.
Too much pressure slows cutting speed.
Flange nut position for 1/4" thick wheels
Fig. 8
Flange nut
Boss
Spindle
Grinding wheel
Flange
Flange nut position for 1/8" thick wheels
Fig. 9
Boss
Flange nut
Spindle
Grinding wheel
Flange
Fig. 10
Operator's Zones
Fig. 11
Hold at a 5° to 15° angle
WARNING!
To reduce the risk of injury when grinding:
ALWAYS use the proper guard.
ALWAYS properly install the guard.
ALWAYS hold the tool firmly with both hands
using the handles provided before and during
grinding.
NEVER use a wheel that has been dropped.
NEVER bang grinding disc onto work.
NEVER grind without proper safety equipment.