Milwaukee 4253-1 Manuel De L'utilisateur page 9

APPLICATIONS
DANGER
To reduce the risk of injury,
always keep hands, rags,
clothing, etc. away from mov-
ing parts and chips. Do not
try to remove chips while the
cutter is rotating. Chips are
sharp and can pull objects into
moving parts.
Drilling
When preparing to drill, align the bit with the spot to be
drilled. When proper alignment is established, ener-
gize the magnet and start the drill motor. A pilot hole
is recommended for drilling holes larger than 1/2"
in diameter. When drilling, apply only enough force
to produce a curled chip. Applying too little force will
result in small broken chips and increased drilling
time. Applying too much force will cause overheat-
ing of the bit resulting in short bit life. Overheating
of the bit can be noticed when drill bit and chips
turn brown or blue. Excessive force can cause the
drill to slow down to a point where drilling time will
increase. The use of cutting lubricants will reduce
drilling heat and increase drill bit life.
Tapping
Select the proper tap and drill combination. Refer to
the "Maximum Recommended Capacity" chart. On
two-speed drill motors, use the low speed shift set-
ting. Drill the hole as described above. If possible,
tap the hole before moving the base to another
position. This eliminates the need to align the tap
with the hole. Always use a quality tapping wax
or oil for smooth cutting and avoid damage to the
tap or workpiece. Pipe taps are not recommended
1. Insert the tap into the chuck. TIGHTEN THE
CHUCK SO THAT THE CHUCK JAWS GRIP
THE ROUND PORTION OF THE SHANK AND
NOT THE FLATS OF THE TAP.
2. For tapping existing holes, align the tap so it is
centered with the hole and reenergize the base.
3. Lubricate the tap and hole and lower the tap onto
the work surface. Turn the drill speed control to
the slowest setting and push the "Drill Fwd" but-
ton ("Drill Rev" for the left hand threads) to start
the drill motor. Adjust the speed control knob so
the tap turns slowly and smoothly into the hole.
4. When using smaller taps, reverse the motor as
soon as the tap breaks through the hole. With
large taps, reverse the motor as soon as the
fi rst full thread is exposed, the motor does not
have to be stopped before changing directions.
5. Reverse the motor to slowly withdraw the tap
from the hole. Maintain light pressure on the
handle to compensate for the weight of the drill
motor on the tap. As soon as the tap comes out
of the hole, raise the motor and tap clear of the
workpiece.
NOTE: Only the low speed shift setting on the
2-speed drill is recommended for tapping.
Using Twist Drills
When preparing to drill, align the bit with the area
to be drilled. When proper alignment is established,
energize the magnet and start the drill motor. A pilot
hole is recommended for drilling holes larger than
1/2" in diameter.
When drilling, apply only enough force to produce
a curled chip. Applying too little force will result in
small broken chips and increased drilling time. Ap-
plying too much force will cause overheating of the
bit resulting in short bit life. Overheating of the bit
can be noticed when drill bit and chips turn brown
or blue. Excessive force can cause the drill to slow
down to a point where drilling time will increase. The
use of cutting lubricants will reduce drilling heat and
increase drill bit life.
Using MILWAUKEE STEEL HAWG™ CUTTERS
MILWAUKEE STEEL HAWG™ CUTTERS cut an
annular ring around the edge of the hole leaving
the center "slug" intact. This greatly reduces the
time, power and drilling force required. The carbide
teeth also leave a fi nished hole that does not require
reaming. These cutters are designed for use with
an electromagnetic or industrial drill press.
• Do not use these cutters in hand held tools.
• Center pin is spring loaded. Provide protection
from ejected slug for people and property below
drilling area.
• Do not remove cutter from arbor unless slug is
removed. Slug may be ejected unexpectedly.
• Keep pump bottle and hose away from moving
parts.
• Use pliers to remove chips from bit and arbor only
after motor has stopped.
• Avoid contact with the carbide tips.
• Periodically inspect the carbide tips for loose
or cracked tips. DO NOT USE carbide tips with
cracked or loose tips.
WARNING
•These bits require the use of HAWG WASH™
cutting fl uid for extended life. Do not use cut-
ting fl uid in an overhead or any other position
that allows cutting fl uid to enter motor or
switch enclosure.
•Wet connections are shock
hazards. Prevent cutting fl uid
from traveling along cord and
contacting the outlet, extension
cord connections or tool plug.
Each time tool is plugged in,
elevate extension cord or gang
box connections and arrange a
drip loop. If plug or connections get wet, turn
power off to outlet before unplugging tool.
W A R N I N G
maintained equipment with minimum
spindle run out.
Attaching MILWAUKEE STEEL HAWG™ CUT-
TERS
See the information supplied with your arbor.
Cutting Procedure
1. Refer to the chart supplied with the arbor to de-
termine the proper drill rotating speed for the type
of material and cutter diameter. When using this
chart, use the upper end of the range for softer
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