DEWALT Industrial Tool Co., 701 East Joppa Road, Baltimore, MD 21286 Printed in U.S.A. (SEP00-CD-1) Form No. 384946
DW154, DW156, DW157 Copyright © 2000
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INSTRUCTION MANUAL
GUIDE D'UTILISATION
MANUAL DE INSTRUCCIONES
DW154, DW156, DW157
Magnetic Drill Presses
Perceuses à colonne magnétiques
Taladros de columna magnéticos
INSTRUCTIVO DE OPERACIÓN, CENTROS DE SERVICIO Y PÓLIZA
DE GARANTÍA. ADVERTENCIA: LÉASE ESTE INSTRUCTIVO ANTES
DE USAR EL PRODUCTO.
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English
IF YOU HAVE ANY QUESTIONS OR COMMENTS ABOUT THIS
OR ANY D
EWALT TOOL, CALL US TOLL FREE AT:
1-800-4-DEWALT (1-800-433-9258)
SIDE HANDLE
REVERSING RING
DW154 2" (50MM)
FEED HANDLE
CUTTER
ARBOR
DW156 3/4" (19MM)
SIDE HANDLE
REVERSING RING
FEED HANDLE
CHUCK
ARBOR
DW157 1/2" (13MM)
SIDE HANDLE
REVERSING SWITCH
FEED HANDLE
CHUCK
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Safety Instructions For All Tools
• KEEP WORK AREA CLEAN. Cluttered areas and benches invite
injuries.
• CONSIDER WORK AREA ENVIRONMENT. Don’t expose power
tools to rain. Don’t use power tools in damp or wet locations. Keep
work area well lit. Do not use tool in presence of flammable liquids
or gases.
• GUARD AGAINST ELECTRIC SHOCK. Prevent body contact
with grounded surfaces. For example; pipes, radiators, ranges,
and refrigerator enclosures.
• KEEP CHILDREN AWAY. Do not let visitors contact tool or
extension cord. All visitors should be kept away from work area.
• STORE IDLE TOOLS. When not in use, tools should be stored in
dry, and high or locked-up place — out of reach of children.
• DON’T FORCE TOOL. It will do the job better and safer at the
rate for which it was intended.
• USE RIGHT TOOL. Don’t force small tool or attachment to do the
job of a heavy-duty tool. Don’t use tool for purpose not intended.
• DRESS PROPERLY. Do not wear loose clothing or jewelry. They
can be caught in moving parts. Rubber gloves and non-skid
footwear are recommended when working outdoors. Wear
protective hair covering to contain long hair.
• USE SAFETY GLASSES. Also use face or dust mask if cutting
operation is dusty.
• DON’T ABUSE CORD. Never carry tool by cord or yank it to
disconnect from receptacle. Keep cord from heat, oil, and sharp
edges.
• SECURE WORK. Use clamps or a vise to hold work. It’s safer than
using your hand and it frees both hands to operate tool.
• DON’T OVERREACH. Keep proper footing and balance at all
times.
• MAINTAIN TOOLS WITH CARE. Keep tools sharp and clean for
better and safer performance. Follow instructions for lubricating
and changing accessories. Inspect tool cords periodically and if
damaged, have repaired by authorized service facility. Inspect
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Important Safety Instructions
WARNING: When using electric tools, basic safety precautions
should always be followed to reduce risk of fire, electric shock, and
personal injury, including the following:
READ ALL INSTRUCTIONS
Grounding Instructions
This tool should be grounded while in use to protect the operator
from electric shock. The tool is equipped with a 3-conductor cord and
3-prong grounding type plug to fit the proper grounding type
receptacle. The green (or green and yellow) conductor in the cord is
the grounding wire. Never connect the green (or green and yellow)
wire to a live terminal. If your unit is intended for use on less than 150
V, it has a plug that looks like that shown in sketch A. If it is for use on
150 to 250 V, it has a plug that looks like that shown in sketch D. An
adapter, sketches B and C, is available for connecting sketch A type
plugs to 2-prong receptacles. The green-colored rigid ear, lug, or the
like, extending from the adapter must be connected to a permanent
ground, such as a properly grounded outlet box. No adapter is
available for a plug as shown in sketch D. ADAPTER SHOWN IN
FIGURES B and C IS NOT FOR USE IN CANADA. Use only 3-wire
extension cords that have 3-prong grounding-type plugs and 3-pole
receptacles that accept the tool’s plug. Replace or repair damaged
cords.
AB CD
GROUNDING PIN
GROUNDED
OUTLET
BOX
GROUNDING
MEANS
GROUNDING PIN
ADAPTER
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• STAY ALERT .Watch what you are doing. Use common sense. Do
not operate tool when you are tired.
• CHECK DAMAGED PARTS. Before further use of the tool, a
guard or other part that is damaged should be carefully checked
to determine that it will operate properly and perform its intended
function. Check for alignment of moving parts, binding of moving
parts, breakage of parts, mounting, and any other conditions that
may affect its operation. A guard or other part that is damaged
should be properly repaired or replaced by an authorized service
center unless otherwise indicated elsewhere in this instruction
manual. Have defective switches replaced by authorized service
center. Do not use tool if switch does not turn it on and off.
CAUTION: When drilling into walls, floors or wherever “live”
electrical wires may be encountered, DO NOT TOUCH ANY
METAL PARTS OF THE TOOL! Hold the tool only by the insulated
grasping surfaces to prevent electric shock if you drill or drive into
a live wire.
Additional Safety Instructions
• Always be sure that the drill press is plugged into the correct
voltage system. Place cord so that it cannot be pulled from the
receptacle accidentally. Check for correct line fuse.
• Before operating unit, make sure it is grounded correctly in
accordance with instructions under “Grounding.”
• Always use safety chain when working on vertical or overhead
beams since electrical supply may fail or unit may accidentally be
disconnected. Connect safety chain immediately after magnet unit
is set in place.
• Always use the correct gage extension wire (see Extension Wire
Table).
• Use a back-up plate when magnet is mounted on thin material,
the total thickness should be 1/2”(13mm) or more. See instructions
under “Operation.”
• Care should be taken to place the base on a flat surface. Do not
set magnet on objects such as bolt heads, screws, rivets, or steel
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extension cords periodically and replace if damaged. Keep
handles dry, clean, and free from oil and grease.
• DISCONNECT OR LOCK OFF TOOLS when not in use, before
servicing, and when changing accessories, such as blades, bits,
cutters.
• REMOVE ADJUSTING KEYS AND WRENCHES. Form habit of
checking to see that keys and adjusting wrenches are removed
from tool before turning it on.
• AVOID UNINTENTIONAL STARTING. Don’t carry tool with finger
on switch. Be sure switch is off when plugging in.
• EXTENSION CORDS. Use only 3-wire extension cords that have
3-prong grounding-type plugs and 3-pole receptacles that accept
the tool’s plug. Replace or repair damaged cords. Make sure your
extension cord is in good condition. When using an extension cord,
be sure to use one heavy enough to carry the current your product
will draw. An undersized cord will cause a drop in line voltage
resulting in loss of power and overheating. The following table
shows the correct size to use depending on cord length and
nameplate ampere rating. If in doubt, use the next heavier gage.
The smaller the gage number, the heavier the cord.
• OUTDOOR USE EXTENSION CORDS. When tool is used
outdoors, use only extension cords intended for use outdoors and
so marked.
Minimum Gage for Cord Sets
Volts Total Length of Cord in Feet
120V 0-25 26-50 51-100 101-150
240V 0-50 51-100 101-200 201-300
Ampere Rating
More Not more American Wire Gage (AWG)
Than Than
0-6 18 16 16 14
6 - 10 18 16 14 12
10 - 12 16 16 14 12
12 - 16 14 12 Not Recommended
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steel—with zero air gap. Air gap may be defined as the distance
between the magnet core surface and the mounting plate. The two
surfaces will be kept apart by curvature, coats of paint, by surface
irregularities, bolt heads, etc. Holding power is reduced by rough or
uneven surfaces, insufficient thickness of steel or insufficient
mounting area for the magnet base. The magnet rapidly loses its
holding power when this surface irregularity raises the air gap above
1/64"(.4mm). Keep this air gap to a minimum and be sure to smooth
the surface removing any undue projections, chips or other items that
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chips, since space between magnet and working surface weakens
the magnetic pull.
CAUTION: DO NOT USE FEED HANDLE TO LIFT UNIT.
CAUTION: After switching to Demag, the magnetic base may
continue to adhere to the work piece due to residual magnetism. A
light blow with the hand will release the base.
WARNING: Some dust created by power sanding, sawing, grinding,
drilling, and other construction activities contains chemicals known to
cause cancer, birth defects or other reproductive harm. Some
examples of these chemicals are:
• lead from lead-based paints,
• crystalline silica from bricks and cement and other masonry
products, and
• arsenic and chromium from chemically-treated lumber (CCA).
Your risk from these exposures varies, depending on how often you do
this type of work. To reduce your exposure to these chemicals: work
in a well ventilated area, and work with approved safety equipment,
such as those dust masks that are specially designed to filter out
microscopic particles.
SAVE THESE INSTRUCTIONS
Motor
Your DEWALTtool is powered by a DEWALT-built motor . Be sure your
power supply agrees with the nameplate marking.
Volts 60 Hz or “AC only” means your tool must be operated only with
alternating current and never with direct current.
Voltage decrease of more than 10% will cause loss of power and
overheating. All D
EWALT tools are factory tested; if this tool does
not operate, check the power supply.
Operation
The magnet in this unit is designed for use on 1/2"(13mm) thick
MOTEUR
MOTOR
FIG 1
FIG. 2A
FIG. 2B
CLAMP
MAG-ON
LIGHT
CONTROL
HANDLE
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will not allow full metal to metal contact. If the magnet fails to hold
on a metal surface, it may be due to this condition and a check can
be made with a feeler gauge or similar device in order to determine
if an air gap exists under the magnet at the crucial points.
1. Place drill press on work surface so that drill point or cutter pilot
is directly over spot to be drilled. Pull trigger and twist control
handle counterclockwise until MAG-ON light glows, indicating the
magnet is energized. Figure 1. When drilling in an overhead or
vertical position, the safety chain must be employed. See Figure
2A & 2B for two suggested positions. The use of a clamp between
the chain loops as shown in
Figure 2B will prevent the mag press from falling when in the demag operation. (Clamp not included).
2. (DW154, DW156) The motor switch is now aligned with a slot in
the control handle, allowing the motor switch to be activated.
Make sure reversing ring on top of motor is in the forward position.
Figure 3. (On DW157 make sure reversing switch is in forward
position).
3. Gently apply pressure to feed handle until twist drill or cutter has
a full bite (see special instructions for DW154) then apply steady
pressure until cut is complete.
NOTE: The feed handle is quickly and easily reversible. Depress
button in feed handle hub and remove handle. Insert in opposite
side and release button. Figure 4.
4. Turn off motor and allow motor to run down before turning magnet
off.
5. Turn magnet off by depressing trigger and turning control handle
clockwise 45°. Figure 5.
6. After each use, rock unit back onto handle guard and remove all
chips from magnet surface.
Operation of DW154 With DEWALT Annular
Cutters
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M
O
T
E
U
R
M
O
T
O
R
FIG. 3
FIG. 4
REVERSING
RING
DEPRESS
TRIGGER
FIG. 5
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1. This unit was designed with user convenience and safety in mind
2. User safety:
The switches are arranged to prevent the user from accidentally
starting motor before the magnet is energized.
The handles are arranged to allow for easy vertical and overhead
placement.
The switches are operated by a twist of the wrist.
3. This unit comes equipped with a quick release feed handle. By
simply depressing a button, the feed handle can be switched from
the left to the right side of the unit.
4. Continuous duty operation:
The motor units are the most rugged on the market.
5. Superior magnet power:
The magnet is designed to stay put on 1/2”(13mm) flat steel or iron.
NOTE: DW156 can be adapted for use with annular cutters with
addition of DW1559 Arbor Assembly. DW157 can be adapted for
use with annular cutters with addition of DW1558 Arbor Assembly.
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FIG. 7
CUTTER
PILOT PIN
A
B
RESERVOIR
ARBOR
ARBOR
BEARING
OIL HOLE
FIG. 6
6. Place proper pilot pin into desired cutter from the top and insert
cutter into the arbor. Line up cutter flats with arbor set screws, Fig.
6. Tighten both set screws securely . (Make sure flats are properly
located under set screws so that they remain recessed below
surface of the shaft).
7. Fill reservoir (slot in arbor) with D
EWALT cutting fluid, Figure 7.
This fluid is formulated to give the best performance and life to the
rotary cutters. Fluid will be released down pilot shaft by gravity
feed. Test by running cutter up and down against work surface to
start fluid flowing. When cutting vertical or overhead, dip cutter in
D
EWALT cutting paste.
NOTE: This unit features an improved arbor bearing system. The
bearings are lubricated at the factory. From time to time it is
necessary to relubricate the bearings to insure efficient operation.
Two holes are provided in the arbor bracket for this purpose as
shown in Figure 6. If the drill press is used in a normal, upright
position apply a liberal amount of SAE No. 20 or 30 oil at point A
and in the holes. When drilling overhead, point B and the holes
should receive the oil. If drilling horizontally, usually oil only needs
to be applied through the holes. Apply the oil liberally at frequent
intervals so that the bearing stays wet at all times.
8. Start motor.
9.
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it will reclamp. Drill point pressure may exceed holding power under
one or more of the following conditions:
1. Excessive air gap—1/64"(.4mm) or more.
2. Thin metal (under 1/2"(13mm) even with back up plate depending
upon position and condition of metal surface.)
3. Metal with low magnetic properties.
4. Uneven or rough surface.
5. Low line voltage.
6. Defective unit.
How To Drill & Tap
For accuracy drill a small lead hole before using the final size drill.
Large diameter drills will “walk” off center until drill reaches full
diameter at which point the outside diameter acts as a pilot in the hole
being drilled. This is not peculiar to magnetic drill presses, but is
general machine shop knowledge on any large hole drilling.
Adjustments
1. This unit is designed
with a permanently
lubricated gib and is
adjusted at the factory.
The gib should be tight
enough to retain the
motor in the upward
(retracted) position.
Should this need
adjustment, tighten 3
self-locking set screws,
6
Bring cutter lightly to the surface to be cut allowing 25-30
revolutions, bringing up light chip so that cutter has established an
external groove. This will position you properly. Apply steady
pressure through the entire cut. It is more important to keep rpms
up than to apply excessive force, causing cutter to slow motor
down. This will attain better cutting action, better cutter life, and
cleaner holes.
Slug should be expelled on the down stroke. If not, it will be
expelled automatically when motor is returned to the extreme up
position.
Operation (at 120 Volts AC)
Control
Apply sufficient pressure to get good drilling. Do not force unit. If
magnet starts to lift from work plate, decrease pressure slightly and
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FIGURE 8
SET
SCREWS
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