Milwaukee HD18 AG125, Operator'S Manual

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8
Fig. 7
Wire Cup Brush
Warning
To reduce the risk of injury,
the operator should be instructed in the use,
care and protection of grinding wheels.
Fig. 5
For best result use only this portion of disc
Hold at a
5° to 15°
angle
using 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
nameplate.
•
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 tem-
perature, or come into contact with solvents or
wetness.
Grinding
When grinding, hold tool at a 5
o
to 15
o
angle, using
constant pressure for a uniform finish. Too great an
angle causes concentrated pressure on small areas
which may gouge or burn work surface.
Wire
Wheel
Brush
Fig. 8
Guard
Warning
Everyone in the area must
wear protective clothing and safety goggles
or face shields. Fatigued wires and residue
will fly off the brush with considerable force,
causing potential for serious injury.
Warning
Never exceed Maximum
Safe Operating Speed of brush. Do not use
a damaged brush or one that is functioning
improperly (throwing wires, out-of-balance,
etc.). These conditions increase the pos-
sibility of further brush failure and possible
injury. Discard and replace damaged brushes
immediately.
using Wire brushes
Wire brushes are useful for removing rust, scale,
burrs, weld slag, etc.
Always install wire cup brushes according to the
accessory manufacterer’s instructions.
Test wheel for balance and loose or damaged wires
by letting it spin for one minute before applying it
to the workpiece. During this time, no one should
stand in front of or in line with it.
Control pressure and surface contact between
wheel and workpiece. Too much pressure causes
over-bending of wires and heat build-up causing
premature wire breaking, rapid dulling and reduced
brush life. Instead of more pressure, try a wire wheel
with more aggressive cutting action (increased wire
size, decreased wire length or different brush type
(knot type vs.crimped wire type).
When using a wire wheel brush, install guard ac-
cording to "Installing/Removing Accessories".
Warning
Because the wires on wire
wheel brushes are directed towards the op-
erator, a guard must be used to protect the
operator when fatigued wires break.
correct accessory, wheel type and grit for the job.
Grinding is the cutting action of thousands of abra-
sive 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 3.2mm(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