DeWalt DCG440 User manual

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1‑800‑4‑DEWALT
DCG440
60V Max* Cordless Grinder with Kickback BrakeTM
Meuleuse sans fil avec Kickback BrakeMC, 60V max
Esmeriladora Inalámbrica de 60V Máx* con Kickback BrakeTM
Instruction Manual
Guide D’utilisation
Manual de instrucciones

English (original instructions) 4
Français (traduction de la notice d’instructions originale) 18
Español (traducido de las instrucciones originales) 35

1
Fig. A DCG440
Components
1 Trigger switch
2 Lock‑off lever
3 Spindle lock button
4 Spindle
5 Auxiliary handle
6 Grinding wheel
7 Unthreaded backing flange
(fixed to spindle)
8 Locking flange
9 Type 27Guard 7"(180mm)
10 Guard release lever
11 Battery pack
12 Battery release button
13 Main Handle
1
2
Componentes
1 Interruptor de gatillo
2 Palanca de bloqueo de apagado
3 Botón de bloqueo de husillo
4 Husillo
5 Manija auxiliar
6 Rueda esmeriladora
7 Brida de respaldo no roscada
(fija a husillo)
8 Brida de bloqueo
9 Protección Tipo 27de 180mm(7")
10 Palanca de liberación de protección
11 Paquete de batería
12 Botón de liberación de batería
13 Manija principal
Composants
1 Gâchette
2 Levier de verrouillage
3 Bouton de verrouillage de la tige
4 Tige
5 Poignée auxiliaire
6 Disque de meulage
7 Bride d’épaulement non filetée
(fixée à la tige)
8 Bride de verrouillage
9 Protection de type 27 7 po
(180mm)
10 Levier de libération de la protection
11 Bloc‑piles
12 Bouton de libération du bloc‑piles
13 Poignée principale
45
9
12
3
10
7
8
13
11
6

2
Fig.B Fig.C
Fig.D Fig.E
Fig.F
5
90˚ 90˚
14
15
8
6
7
4
Fig.G
10
9
16
24
25
6
7
24
Fig.H
4
75–100% charged
Chargé de 75 à 100 %
75–100% cargada
51–74% charged
Chargé de 51 à 74 %
51–74% cargada
< 50% charged
Chargé de < 50 %
< 50% cargada
Pack needs to be charged
Le bloc-piles doit être rechargé
La batería tiene que cargarse
Indicators/Témoin/Indicador
Charging
Bloc-piles en Cours
de Chargement
Unidad en Proceso de Carga
Fully Charged
Bloc-piles Chargé
Unidad Cargada
Hot/Cold Pack Delay
Suspension de Charge Contre
le Chaud/Froid
Restraso por Unidad Caliente/
Fría

3
Fig.I Fig.J
Fig.K Fig.L
Fig.M
23
18
19
3
4
11
12
5
20
21 22
13
Fig.N
Fig.O

ENGLISH
4
c ) Keep children and bystanders away while
operating a power tool. Distractions can cause you
to losecontrol.
2) Electrical Safety
a ) Power tool plugs must match the outlet. Never
modify the plug in any way. Do not use any
adapter plugs with earthed (grounded) power
tools. Unmodified plugs and matching outlets will
reduce risk of electricshock.
b ) Avoid body contact with earthed or grounded
surfaces, such as pipes, radiators, ranges and
refrigerators. There is an increased risk of electric
shock if your body is earthed orgrounded.
c ) Do not expose power tools to rain or wet
conditions. Water entering a power tool will increase
the risk of electricshock.
d ) Do not abuse the cord. Never use the cord for
carrying, pulling or unplugging the power tool.
Keep cord away from heat, oil, sharp edges or
moving parts. Damaged or entangled cords increase
the risk of electricshock.
e ) When operating a power tool outdoors, use an
extension cord suitable for outdoor use. Use of
a cord suitable for outdoor use reduces the risk of
electricshock.
f ) If operating a power tool in a damp location
is unavoidable, use a ground fault circuit
interrupter (GFCI) protected supply. Use of a GFCI
reduces the risk of electricshock.
3) Personal Safety
a ) Stay alert, watch what you are doing and use
common sense when operating a power tool. Do
not use a power tool while you are tired or under
the influence of drugs, alcohol or medication. A
moment of inattention while operating power tools
may result in serious personalinjury.
b ) Use personal protective equipment. Always wear
eye protection. Protective equipment such as a dust
mask, non‑skid safety shoes, hard hat, or hearing
protection used for appropriate conditions will reduce
personalinjuries.
c ) Prevent unintentional starting. Ensure the switch
is in the off‑position before connecting to power
source and/or battery pack, picking up or carrying
the tool. Carrying power tools with your finger on the
switch or energizing power tools that have the switch
on invitesaccidents.
d ) Remove any adjusting key or wrench before
turning the power tool on. A wrench or a key left
attached to a rotating part of the power tool may result
in personalinjury.
e ) Do not overreach. Keep proper footing and
balance at all times. This enables better control of the
power tool in unexpectedsituations.
f ) Dress properly. Do not wear loose clothing or
jewelry. Keep your hair, clothing and gloves away
from moving parts. Loose clothes, jewelry or long hair
can be caught in movingparts.
GENERAL POWER TOOL SAFETY WARNINGS
WARNING: Read all safety warnings, instructions,
illustrations and specifications provided with
this power tool. Failure to follow all instructions
listed below may result in electric shock, fire and/or
seriousinjury.
SAVE ALL WARNINGS
AND INSTRUCTIONS FOR
FUTUREREFERENCE.
The term “power tool” in the warnings refers to your
mains‑operated (corded) power tool or battery‑operated
(cordless) powertool.
1) Work Area Safety
a ) Keep work area clean and well lit. Cluttered or dark
areas inviteaccidents.
b ) Do not operate power tools in explosive
atmospheres, such as in the presence of
flammable liquids, gases or dust. Power tools create
sparks which may ignite the dust orfumes.
Definitions: Safety Alert Symbols and Words
This instruction manual uses the following safety alert
symbols and words to alert you to hazardous situations and
your risk of personal injury or propertydamage.
DANGER: Indicates an imminently hazardous
situation which, if not avoided, will result in death or
seriousinjury.
WARNING: Indicates a potentially hazardous situation
which, if not avoided, could result in death or
seriousinjury.
CAUTION: Indicates a potentially hazardous situation
which, if not avoided, may result in minor or
moderateinjury.
(Used without word) Indicates a safety relatedmessage.
NOTICE: Indicates a practice not related to
personal injury which, if not avoided, may result in
propertydamage.
Intended Use
This heavy‑duty medium angle grinder has been designed
for professional grinding, sanding, wire brush, and cut‑off
applications at various work sites (i.e., constructionsites).
DO NOT use under wet conditions or in presence of
flammable liquids orgases.
These heavy‑duty small angle grinders are professional
power tools. DO NOT let children come into contact with the
tool. Supervision is required when inexperienced operators
use thistool.
WARNING: Read all safety warnings and all
instructions. Failure to follow the warnings and
instructions may result in electric shock, fire and/or
seriousinjury.
WARNING: To reduce the risk of injury, read the
instructionmanual.

5
ENGLISH
SAFETY INSTRUCTIONS FOR ALL
OPERATIONS
Safety Warnings Common for Grinding,
Sanding, Wire Brushing, or Abrasive
Cutting‑Off Operations
a ) This power tool is intended to function as a
grinder, sander, wire brush, or cut‑off tool. Read
all safety warnings, instructions, illustrations
and specifications provided with this power tool.
Failure to follow all instructions listed below may result
in electric shock, fire and/or seriousinjury.
b ) Operations such as polishing are not
recommended to be performed with this
power tool. Operations for which the power tool
was not designed may create a hazard and cause
personalinjury.
c ) Do not use accessories which are not specifically
designed and recommended by the tool
manufacturer. Just because the accessory can
be attached to your power tool, it does not assure
safeoperation.
d ) The rated speed of the accessory must be at least
equal to the maximum speed marked on the
that can make a connection from one terminal to
another. Shorting the battery terminals together may
cause burns or afire.
d ) Under abusive conditions, liquid may be ejected
from the battery; avoid contact. If contact
accidentally occurs, flush with water. If liquid
contacts eyes, additionally seek medical help.
Liquid ejected from the battery may cause irritation
orburns.
e ) Do not use a battery pack or tool that is damaged
or modified. Damaged or modified batteries may
exhibit unpredictable behavior resulting in fire,
explosion or risk ofinjury.
f ) Do not expose a battery pack or tool to
fire or excessive temperature. Exposure to
fire or temperature above 265°F (130°C) may
causeexplosion.
g ) Follow all charging instructions and do not
charge the battery pack or tool outside the
temperature range specified in the instructions.
Charging improperly or at temperatures outside the
specified range may damage the battery and increase
the risk offire.
6) Service
a ) Have your power tool serviced by a qualified
repair person using only identical replacement
parts. This will ensure that the safety of the power tool
ismaintained.
b ) Never service damaged battery packs. Service
of battery packs should only be performed by the
manufacturer or authorized serviceproviders.
g ) If devices are provided for the connection of dust
extraction and collection facilities, ensure these
are connected and properly used. Use of dust
collection can reduce dust‑relatedhazards.
h ) Do not let familiarity gained from frequent use of
tools allow you to become complacent and ignore
tool safety principles. A careless action can cause
severe injury within a fraction of asecond.
4) Power Tool Use and Care
a ) Do not force the power tool. Use the correct power
tool for your application. The correct power tool
will do the job better and safer at the rate for which it
wasdesigned.
b ) Do not use the power tool if the switch does not
turn it on and off. Any power tool that cannot be
controlled with the switch is dangerous and must
berepaired.
c ) Disconnect the plug from the power source and/
or remove the battery pack, if detachable, from
the power tool before making any adjustments,
changing accessories, or storing power tools. Such
preventive safety measures reduce the risk of starting
the power toolaccidentally.
d ) Store idle power tools out of the reach of children
and do not allow persons unfamiliar with the
power tool or these instructions to operate the
power tool. Power tools are dangerous in the hands of
untrainedusers.
e ) Maintain power tools and accessories. Check
for misalignment or binding of moving parts,
breakage of parts and any other condition
that may affect the power tool’s operation. If
damaged, have the power tool repaired before
use. Many accidents are caused by poorly maintained
powertools.
f ) Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges are
less likely to bind and are easier tocontrol.
g ) Use the power tool, accessories and tool bits etc.
in accordance with these instructions, taking
into account the working conditions and the
work to be performed. Use of the power tool for
operations different from those intended could result in
a hazardoussituation.
h ) Keep handles and grasping surfaces dry, clean
and free from oil and grease. Slippery handles and
grasping surfaces do not allow for safe handling and
control of the tool in unexpectedsituations.
5) Battery Tool Use and Care
a ) Recharge only with the charger specified by the
manufacturer. A charger that is suitable for one type
of battery pack may create a risk of fire when used with
another batterypack.
b ) Use power tools only with specifically designated
battery packs. Use of any other battery packs may
create a risk of injury andfire.
c ) When battery pack is not in use, keep it away
from other metal objects, like paper clips, coins,
keys, nails, screws or other small metal objects,

ENGLISH
6
excessive accumulation of powdered metal may cause
electricalhazards.
n ) Do not operate the power tool near flammable
materials. Sparks could ignite thesematerials.
o ) Do not use accessories that require liquid
coolants. Using water or other liquid coolants may
result in electrocution orshock.
p ) Do not use Type 11(flaring cup) wheels on this
tool. Using inappropriate accessories can result
ininjury.
q ) Always use auxiliary handle. Tighten the handle
securely. The auxiliary handle should always be used
to maintain control of the tool at alltimes.
r ) When starting the tool with a new or replacement
wheel, or a new or replacement wire brush
installed, hold the tool in a well protected area
and let it run for one minute. If the wheel has
an undetected crack or flaw, it should burst in
less than one minute. If the wire brush has loose
wires, they will be detected. Never start the tool
with a person in line with the wheel. This includes
theoperator.
s ) Use of accessories not specified in this manual
is not recommended and may be hazardous.
Use of power boosters that would cause the tool
to be driven at speeds greater than its rated speed
constitutesmisuse.
t ) To prevent the spindle end from contacting the
bottom of the hole of the hubbed wheel, use
accessories that have a threaded hole depth of
at least 21mm. Failure to use an accessory with the
appropriate thread depth could result in damage to the
hubbed wheel and injury to the operator or persons in
thearea.
u ) The arbor size of hubbed wheels, flanges, backing
pads or any other accessory must properly fit the
spindle of the power tool. Accessories with arbor
holes that do not match the mounting hardware of the
power tool will run out of balance, vibrate excessively
and may cause loss ofcontrol.
v ) Avoid bouncing the wheel or giving it rough
treatment. If this occurs, stop the tool and inspect the
wheel for cracks orflaws.
w ) Always handle and store wheels in a carefulmanner.
x ) Do not operate this tool for long periods of time.
Vibration caused by the operating action of this
tool may cause permanent injury to fingers,
hands, and arms. Use gloves to provide extra cushion,
take frequent rest periods, and limit daily time ofuse.
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or snagged rotating
wheel, backing pad, brush or any other accessory. Pinching or
snagging causes rapid stalling of the rotating accessory which
in turn causes the uncontrolled power tool to be forced in the
direction opposite of the accessory’s rotation at the point of
thebinding.
power tool. Accessories running faster than their rated
speed can break and flyapart.
e ) The outside diameter and the thickness of your
accessory must be within the capacity rating of
your power tool. Incorrectly sized accessories cannot
be adequately guarded orcontrolled.
f ) Threaded mounting of accessories must match
the grinder spindle thread. For accessories
mounted by flanges, the arbor hole of the
accessory must fit the locating diameter of the
flange. Accessories that do not match the mounting
hardware of the power tool will run out of balance,
vibrate excessively and may cause loss ofcontrol.
g ) Do not use a damaged accessory. Before each use
inspect the accessory such as abrasive wheels for
chips and cracks, backing pad for cracks, tear or
excess wear, wire brush for loose or cracked wires.
If power tool or accessory is dropped, inspect for
damage or install an undamaged accessory. After
inspecting and installing an accessory, position
yourself and bystanders away from the plane of
the rotating accessory and run the power tool
at maximum no‑load speed for one minute.
Damaged accessories will normally break apart during
this testtime.
h ) Wear personal protective equipment. Depending
on application, use face shield, safety goggles or
safety glasses. As appropriate, wear dust mask,
hearing protectors, gloves and workshop apron
capable of stopping small abrasive or workpiece
fragments. The eye protection must be capable
of stopping flying debris generated by various
operations. The dust mask or respirator must be
capable of filtrating particles generated by your
operation. Prolonged exposure to high intensity noise
may cause hearingloss.
i ) Keep bystanders a safe distance away from work
area. Anyone entering the work area must wear
personal protective equipment. Fragments of
workpiece or of a broken accessory may fly away and
cause injury beyond immediate area ofoperation.
j ) Hold the power tool by insulated gripping
surfaces only, when performing an operation
where the cutting accessory may contact hidden
wiring. Cutting accessory contacting a “live” wire may
make exposed metal parts of the power tool “live” and
could give the operator an electricshock.
k ) Never lay the power tool down until the accessory
has come to a complete stop. The spinning accessory
may grab the surface and pull the power tool out of
yourcontrol.
l ) Do not run the power tool while carrying it at your
side. Accidental contact with the spinning accessory
could snag your clothing, pulling the accessory into
yourbody.
m ) Regularly clean the power tool’s air vents. The
motor’s fan will draw the dust inside the housing and

7
ENGLISH
wheel. Proper wheel flanges support the wheel
thus reducing the possibility of wheel breakage.
Flanges for cut‑off wheels may be different from
grinding wheelflanges.
f ) Do not use worn down wheels from larger power
tools. Wheel intended for larger power tool is not
suitable for the higher speed of a smaller tool and
mayburst.
Additional Safety Warnings Specific for
Abrasive Cutting‑Off Operations
a ) Do not “jam” the cut‑off wheel or apply excessive
pressure. Do not attempt to make an excessive
depth of cut. Overstressing the wheel increases the
loading and susceptibility to twisting or binding of
the wheel in the cut and the possibility of kickback or
wheelbreakage.
b ) Do not position your body in line with and behind
the rotating wheel. When the wheel, at the point of
operation, is moving away from your body, the possible
kickback may propel the spinning wheel and the power
tool directly atyou.
c ) When wheel is binding or when interrupting a cut
for any reason, switch off the power tool and hold
the power tool motionless until the wheel comes
to a complete stop. Never attempt to remove the
cut‑off wheel from the cut while the wheel is in
motion otherwise kickback may occur. Investigate
and take corrective action to eliminate the cause of
wheelbinding.
d ) Do not restart the cutting operation in the
workpiece. Let the wheel reach full speed and
carefully reenter the cut. The wheel may bind,
walk up or kickback if the power tool is restarted in
theworkpiece.
e ) Support panels or any oversized workpiece to
minimize the risk of wheel pinching and kickback.
Large workpieces tend to sag under their own
weight. Supports must be placed under the workpiece
near the line of cut and near the edge of the workpiece
on both sides of thewheel.
f ) Use extra caution when making a “pocket cut”
into existing walls or other blind areas. The
protruding wheel may cut gas or water pipes, electrical
wiring or objects that can causekickback.
Safety Warnings Specific for
SandingOperations
a ) Do not use excessively oversized sanding disc
paper. Follow manufacturers recommendations,
when selecting sanding paper. Larger sanding
paper extending beyond the sanding pad presents a
laceration hazard and may cause snagging, tearing of
the disc orkickback.
For example, if an abrasive wheel is snagged or pinched by the
workpiece, the edge of the wheel that is entering into the pinch
point can dig into the surface of the material causing the wheel
to climb out or kick out. The wheel may either jump toward or
away from the operator, depending on direction of the wheel’s
movement at the point of pinching. Abrasive wheels may also
break under theseconditions.
Kickback is the result of tool misuse and/or incorrect operating
procedures or conditions and can be avoided by taking proper
precautions as given below:
a ) Maintain a firm grip on the power tool and
position your body and arm to allow you to resist
kickback forces. Always use auxiliary handle, if
provided, for maximum control over kickback or
torque reaction during start up. The operator can
control torque reaction or kickback forces, if proper
precautions aretaken.
b ) Never place your hand near the rotating
accessory. Accessory may kickback over yourhand.
c ) Do not position your body in the area where
power tool will move if kickback occurs. Kickback
will propel the tool in direction opposite to the wheel’s
movement at the point ofsnagging.
d ) Use special care when working corners, sharp
edges etc. Avoid bouncing and snagging the
accessory. Corners, sharp edges or bouncing have a
tendency to snag the rotating accessory and cause loss
of control orkickback.
e ) Do not attach a saw chain woodcarving blade
or toothed saw blade. Such blades create frequent
kickback and loss ofcontrol.
Safety Warnings Specific for Grinding and
Abrasive Cutting‑Off Operations
a ) Use only wheel types that are recommended for
your power tool and the specific guard designed
for the selected wheel. Wheels for which the power
tool was not designed cannot be adequately guarded
and areunsafe.
b ) The grinding surface of center depressed wheels
must not be mounted below the plane of the
guard lip. An improperly mounted wheel that
projects through the plane of the guard lip cannot be
adequatelyprotected.
c ) The guard must be securely attached to the power
tool and positioned for maximum safety, so the
least amount of wheel is exposed towards the
operator. The guard helps to protect the operator from
broken wheel fragments, accidental contact with wheel
and sparks that could igniteclothing.
d ) Wheels must be used only for recommended
applications. For example: do not grind with the
side of cut‑off wheel. Abrasive cut‑off wheels are
intended for peripheral grinding, side forces applied to
these wheels may cause them toshatter.
e ) Always use undamaged wheel flanges that
are of correct size and shape for your selected

ENGLISH
8
BATTERIES AND CHARGERS
The battery pack is not fully charged out of the carton.
Before using the battery pack and charger, read the
safety instructions below and then follow charging
proceduresoutlined. When ordering replacement battery
packs, be sure to include the catalog number andvoltage.
The label on your tool may include the following symbols. The
symbols and their definitions are asfollows:
V.........................volts
Hz .......................hertz
min.....................minutes
or DC......direct current
......................Class I Construction
(grounded)
…/min..............per minute
BPM....................beats per minute
IPM.....................impacts per minute
OPM....................oscillations per
minute
RPM....................revolutions per
minute
sfpm ...................surface feet per
minute
SPM....................strokes per minute
A.........................amperes
W........................watts
Wh...................... watt hours
Ah.......................amp hours
or AC........... alternating current
or AC/DC....alternating or direct
current
......................Class II Construction
(double insulated)
no.......................no load speed
n.........................rated speed
PSI.......................pounds per square
inch
......................earthing terminal
.....................safety alert symbol
.....................visible radiation
.....................wear respiratory
protection
.....................wear eye protection
.....................wear hearing
protection
.....................read all
documentation
• Use the appropriate dust extractor vacuum to remove
the vast majority of static and airborne dust. Failure
to remove static and airborne dust could contaminate the
working environment or pose an increased health risk to
the operator and those in closeproximity.
• Use clamps or other practical ways to secure and
support the workpiece to a stable platform. Holding
the work by hand or against your body is unstable and may
lead to loss ofcontrol andinjury.
• Air vents often cover moving parts and should be
avoided. Loose clothes, jewelry or long hair can be caught
in movingparts.
CAUTION: When not in use, place tool on its
side on a stable surface where it will not cause
a tripping or falling hazard. Some tools with large
battery packs will stand upright on the battery pack
but may be easily knockedover.
Additional Safety Information
WARNING: Never modify the power tool or any part of
it. Damage or personal injury couldresult.
WARNING: ALWAYS use safety glasses. Everyday
eyeglasses are NOT safety glasses. Also use face or
dust mask if cutting operation is dusty. ALWAYS WEAR
CERTIFIED SAFETYEQUIPMENT:
• ANSI Z87.1 eye protection (CAN/CSA Z94.3),
• ANSI S12.6 (S3.19) hearing protection,
• NIOSH/OSHA/MSHA respiratoryprotection.
WARNING:
Some dust created by power sanding,
sawing, grinding, drilling, and other construction activities
contains chemicals known to the State of California 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.
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.
WARNING: Use of this tool can generate and/or
disperse dust, which may cause serious and permanent
respiratory or other injury. Always use NIOSH/OSHA
approved respiratory protection appropriate for
the dust exposure. Direct particles away from face
andbody.
WARNING: Always wear proper personal hearing
protection that conforms to ANSI S12.6 (S3.19)
during use. Under some conditions and duration
of use, noise from this product may contribute to
hearingloss.
• Wear protective clothing and wash exposed areas
with soap and water. Allowing dust to get into your
mouth, eyes, or lay on the skin may promote absorption of
harmfulchemicals. Direct particles away from face andbody.
Safety Warnings Specific for Wire
BrushingOperations
a ) Be aware that wire bristles are thrown by the
brush even during ordinary operation. Do not
overstress the wires by applying excessive load to
the brush. The wire bristles can easily penetrate light
clothing and/orskin.
b ) Guard must be used for wire brushing, do not
allow any interference of the wire wheel or brush
with the guard. Wire wheel or brush may expand in
diameter due to work and centrifugalforces.
c ) Safety goggles or safety glasses with side shields
and a full face shield compliant with ANSI Z87.1
MUST be worn by the operator and others that are
within 50' (15.2 m) of the use of thisproduct.

9
ENGLISH
The RBRC® Seal
Please take your spent battery packs to
an authorized DEWALT service center or
to your local retailer for recycling. In some
areas, it is illegal to place spent battery
packs in the trash. You may also contact your local recycling
center for information on where to drop off the spent
Shipping the DEWALT FLEXVOLT™ Battery Pack
The DEWALT FLEXVOLT™ battery pack has a battery cap that
should be used when shipping the batterypack.
Attach the cap to the battery pack to ready it for shipping.
This converts the battery pack to three separate 20V
batteries. The three batteries have the Watt hour rating
labeled“Shipping”on the battery pack. If shipping without
the cap or in a tool, the pack is one battery at the Watt hour
rating labeled“Use”.
Example battery pack label:
USE: 120Wh SHIPPING: 3x 40Wh
In this example, the battery pack is three batteries with
40Watt hours each when using the cap. Otherwise, the
battery pack is one battery with 120Watthours.
Storage Recommendations
The best storage place is one that is cool and dry, away
from direct sunlight and excess heat or cold. Store the fully
charged battery pack out of thecharger.
Battery Pack Cleaning Instructions
Dirt and grease may be removed from the exterior of the
battery pack using a cloth or soft non‑metallic brush. Do not
use water or any cleaningsolutions.
Fuel Gauge Battery Packs (Fig.B)
Some battery packs include a fuel gauge. When the fuel
gauge button is pressed and held, the LED lights will
indicate the approximate level of charge remaining. This
does not indicate tool functionality and is subject to
variation based on product components, temperature, and
end‑userapplication.
Transportation
WARNING: Fire hazard. Do not store, carry, or
transport the battery pack so that metal objects
can contact exposed battery terminals. For
example, do not place the battery pack in aprons,
pockets, tool boxes, product kit boxes, drawers, etc.,
with loose nails, screws, keys, coins, hand tools, etc.
When transporting individual battery packs, make
sure that the battery terminals are protected and well
insulated from materials that could contact them and
cause a short circuit. NOTE: Li‑ion battery packs should
not be put in checked baggage on airplanes and must
be properly protected from short circuits if they are in
carry‑onbaggage.
READ ALL INSTRUCTIONS
Important Safety Instructions for All
Battery Packs
WARNING: Read all safety warnings, instructions,
and cautionary markings for the battery pack,
charger and product. Failure to follow the
warnings and instructions may result in electric
shock, fire and/or seriousinjury.
• Do not charge or use the battery pack in explosive
atmospheres, such as in the presence of flammable
liquids, gases or dust. Inserting or removing the battery
pack from the charger may ignite the dust orfumes.
• NEVER force the battery pack into the charger. DO
NOT modify the battery pack in any way to fit into a
non‑compatible charger as battery pack may rupture
causing serious personal injury. Consult the chart
at the end of this manual for compatibility of batteries
andchargers.
• Charge the battery packs only in DEWALTchargers.
• DO NOT splash or immerse in water or otherliquids.
• DO NOT allow water or any liquid to enter batterypack.
• Do not store or use the tool and battery pack in
locations where the temperature may reach or
exceed 104°F (40°C) (such as outside sheds or metal
buildings in summer). For best life store battery packs in
a cool, drylocation.
NOTE: Do not store the battery packs in a tool with
the trigger switch locked on. Never tape the trigger
switch in the ONposition.
• Do not incinerate the battery pack even if it is severely
damaged or is completely worn out. The battery pack
can explode in a fire. Toxic fumes and materials are created
when lithium‑ion battery packs areburned.
• Do not expose a battery pack or appliance to fire or
excessive temperature. Exposure to fire or temperature
above 265°F (130°C) may causeexplosion.
• If battery contents come into contact with the skin,
immediately wash area with mild soap and water. If
battery liquid gets into the eye, rinse water over the open
eye for 15minutes or until irritation ceases. If medical
attention is needed, the battery electrolyte is composed of a
mixture of liquid organic carbonates and lithiumsalts.
• Contents of opened battery cells may cause
respiratory irritation. Provide fresh air. If symptoms
persist, seek medicalattention.
• Battery liquid may be flammable if exposed to spark
orflame.
• Never attempt to open the battery pack for any
reason. If the battery pack case is cracked or
damaged, do not insert into the charger. Do not crush,
drop or damage the battery pack. Do not use a battery pack
or charger that has received a sharp blow, been dropped,
run over or damaged in any way (e.g., pierced with a nail,
hit with a hammer, stepped on). Damaged battery packs
should be returned to the service center forrecycling.

ENGLISH
10
ventilation slots and result in excessive internal heat.
Place the charger in a position away from any heat source.
The charger is ventilated through slots in the top and the
bottom of thehousing.
• Do not operate the charger with a damaged cord
orplug. Have them replacedimmediately.
• Do not operate the charger if it has received a sharp
blow, been dropped or otherwise damaged in any
way. Take it to an authorized servicecenter.
• Do not disassemble the charger; take it to an
authorized service center when service or repair
is required. Incorrect reassembly may result in a risk of
electric shock, electrocution orfire.
• The charger is designed to operate on standard
120V household electrical power. Do not attempt to
use it on any other voltage. This does not apply to the
vehicularcharger.
• Foreign materials of a conductive nature, such as, but
not limited to, grinding dust, metal chips, steel wool,
aluminum foil or any buildup of metallic particles
should be kept away from the charger cavities and
ventilation slots.
• Always unplug the charger from the power supply
when there is no battery pack in thecavity.
Charging a Battery (Fig.C)
1. Plug the charger into an appropriate outlet.
2. Insert and fully seat battery pack. The red charging
light(s) will continuously blink whilecharging.
3. Charging is complete when the red charging light(s)
remain(s) continuously ON. Battery pack can be left in
charger or removed. Some chargers require the battery
pack release button to be pressed forremoval.
WARNING: Only charge batteries in air temperature
over 40° F (4.5° C) and below 104° F (+40°C).
4. Charger will not charge a faulty battery pack, which may
be indicated by the charging light(s) staying OFF. Take
charger and battery pack to an authorized service center
if light(s) stay(s)OFF.
NOTE: Refer to label near charging light(s) on charger
for blinkpatterns. Older chargers may have additional
information and/or may not have a yellow indicatorlight.
NOTE: To remove the battery pack, some chargers
require the battery pack release button to bepressed.
Hot/Cold Pack Delay
When the charger detects a battery pack that is too hot
or too cold, it automatically starts a Hot/Cold Pack Delay,
suspending charging until the battery pack has reached an
appropriate temperature. The charger then automatically
switches to the pack charging mode. This feature ensures
maximum battery packlife.
A cold battery pack may charge at a slower rate than a warm
batterypack.
The hot/cold pack delay will be indicated by the red light(s)
continuing to blink but with the yellow light continuously
ON. Once the battery pack has reached an appropriate
temperature, the yellow light will turn OFF and the charger
will resume the chargingprocedure.
Important Safety Instructions for All
Battery Chargers
WARNING: Read all safety warnings, instructions,
and cautionary markings for the battery pack,
charger and product. Failure to follow the
warnings and instructions may result in electric
shock, fire and/or seriousinjury.
• DO NOT attempt to charge the battery pack with
any chargers other than a DEWALT charger. DEWALT
chargers and battery packs are specifically designed to
worktogether.
• These chargers are not intended for any uses other
than charging DEWALT rechargeable battery packs.
Charging other types of battery packs may cause them to
overheat and burst, resulting in personal injury, property
damage, fire, electric shock orelectrocution.
• Do not expose the charger to rain orsnow.
• Do not allow water or any liquid to entercharger.
• Pull by the plug rather than the cord when
disconnecting the charger. This will reduce the risk of
damage to the electric plug andcord.
• Make sure that the cord is located so that it will not
be stepped on, tripped over or otherwise subjected to
damage orstress.
• Do not use an extension cord unless it is absolutely
necessary. Use of improper extension cord could result in
risk of fire, electric shock orelectrocution.
• When operating a charger outdoors, always provide
a dry location and use an extension cord suitable
for outdoor use. Use of a cord suitable for outdoor use
reduces the risk of electricshock.
• An extension cord must have adequate wire size
(AWG or American Wire Gauge) for safety. The smaller
the gauge number of the wire, the heavier the cord and
thus the greater its capacity. 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 total length of all extension cords
plugged together, and nameplate ampere rating. If in
doubt, use the next heaviergauge.
Minimum Gauge for Cord Sets
Volts Total Length of Cord in Feet
(meters)
120V 25 (7.6) 50 (15.2) 100 (30.5) 150 (45.7)
Ampere Rating
American Wire Gauge
More Than Not More
Than
0 6 18 16 16 14
610 18 16 14 12
10 12 16 16 14 12
12 16 14 12 Not Recommended
• Do not place any object on top of the charger or place
the charger on a soft surface that might block the
battery pack. Do not place in curbside recycling. For more
information visit www.call2recycle.org. or call the toll free
number in the RBRC®Seal.
RBRC® is a registered trademark of Call 2Recycle,Inc.

11
ENGLISH
Rotating the Gear Case (Fig.E)
To improve user comfort, the gear case will rotate 90° for
cuttingoperations.
1. Remove the four corner screws attaching the gear case to
motorhousing.
2. Without separating the gear case from motor housing,
rotate the gear case head to desiredposition.
Pipeline Grip Gear Case (Fig.D)
The pipeline grip gear case cover24 is a soft grip cover for
the gear case that can be used as a gripping surface only for
pipeline grinding and wire brushing where the edge of the
wheel is used for grinding and cleaning and precise control
is needed to ensure accuracy. As with any gripping surface,
maintain firm grip during use. The side handle should be
used as the secondary grip surface for all otherapplications.
Attaching the Auxiliary Handle (Fig.D)
WARNING: This handle SHOULD BE USED AT ALL
TIMES to maintain complete control of the tool.
Always make sure the handle istight.
Screw the auxiliary handle5 tightly into one of the threaded
mounting holes of the gearcase.
ASSEMBLY AND ADJUSTMENTS
WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can causeinjury.
Features
E‑Clutch™
This unit is equipped with an E‑Clutch™ (Electronic Clutch),
which in the event of a high‑load the unit will be shut off to
reduce the reaction torque to the user. The switch needs to
be cycled (turned on and off) to restarttool.
Kickback Brake™
When a pinch, stall, or bind‑up event is sensed the electronic
brake engages with maximum force to quickly stop the
wheel, reduce the movement of the grinder, and shut the
grinder off. The switch needs to be cycled (turned on and off)
to restart thetool.
Power‑Off™ Overload Protection
The power supply to the motor will be reduced in case of
motor overload. With continued motor overload, the tool will
shut off.The switch needs to be cycled (turned on and off) to
restart tool. The tool will power off each time the current load
reaches the overload current value (motor burn‑up point).
If continued overload shutdowns occur, apply less force/
weight on the tool until the tool will function without the
overloadengaging.
Electronic Soft Start
This feature limits the initial start up speed, allowing the tool
to build up to full speed gradually over a 1secondperiod.
SAVE THESE INSTRUCTIONS FOR
FUTURE USE
Wall Mounting
Some DEWALT chargers are designed to be wall mountable
or to sit upright on a table or work surface. If wall mounting,
locate the charger within reach of an electrical outlet, and
away from a corner or other obstructions which may impede
air flow. Use the back of the charger as a template for the
location of the mounting screws on the wall. Mount the
charger securely using drywall screws (purchased separately)
at least 1”(25.4mm) long, with a screw head diameter of
0.28–0.35”(7–9mm), screwed into wood to an optimal
depth leaving approximately 7/32”(5.5 mm) of the screw
exposed. Align the slots on the back of the charger with the
exposed screws and fully engage them in theslots.
DCB118 and DCB1112 Chargers
The DCB118 and DCB1112 chargers are equipped with
an internal fan designed to cool the battery pack. The fan
will turn on automatically when the battery pack needs to
becooled.
Never operate the charger if the fan does not operate
properly or if ventilation slots are blocked. Do not permit
foreign objects to enter the interior of thecharger.
Electronic Protection System
Li‑Ion tools are designed with an Electronic Protection
System that will protect the battery pack against overloading,
overheating or deep discharge. The tool will automatically
turn off and the battery pack will need to berecharged.
Important Charging Notes
1. Longest life and best performance can be obtained if
the battery pack is charged when the air temperature
is between 65°F – 75°F (18°C– 24°C). DO NOT charge
when the battery pack is below +40°F (+4.5°C), or
above +104°F (+40°C). This is important and will
prevent serious damage to the batterypack.
2. The charger and battery pack may become warm to the
touch while charging. This is a normal condition, and
does not indicate a problem.To facilitate the cooling of
the battery pack after use, avoid placing the charger or
battery pack in a warm environment such as in a metal
shed or an uninsulatedtrailer.
3. If the battery pack does not charge properly:
a. Check operation of receptacle by plugging in a lamp
or other appliance;
b. Check to see if receptacle is connected to a light
switch which turns power off when you turn out
the lights;
c. If charging problems persist, take the tool, battery
pack and charger to your local servicecenter.
4. You may charge a partially used pack whenever you
desire with no adverse effect on the batterypack.
Charger Cleaning Instructions
WARNING: Shock hazard. Disconnect the charger
from the AC outlet before cleaning. Dirt and grease
may be removed from the exterior of the charger using
a cloth or soft non‑metallic brush. Do not use water or
any cleaningsolutions.

ENGLISH
12
5. To remove the guard, open the guard latch, rotate the
guard so that the arrows are aligned and pull up on
theguard.
NOTE: The guard is pre‑adjusted to the diameter of the gear
case hub at the factory. If, after a period of time, the guard
becomes loose, tighten the adjusting screw16 with clamp
lever in the closedposition.
CAUTION: Do not tighten the adjusting screw with the
clamp lever in open position. Undetectable damage to
the guard or the mounting hub mayresult.
CAUTION: If guard cannot be tightened by adjusting
clamp, do not use tool and take the tool and guard to a
service center to repair or replace theguard.
Flanges and Wheels
WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental can causeinjury.
Mounting Non‑Hubbed Wheels (Fig.G, H)
WARNING: Failure to properly seat the flanges and/or
wheel could result in serious injury (or damage to the
tool orwheel).
CAUTION: Included flanges must be used with
depressed center Type 27/42 grinding wheels and
Type1/41 cutting wheels. Refer to the Accessories
Chart for moreinformation.
WARNING: A closed, two‑sided cutting wheel guard
is required when using abrasive cutting wheels or
diamond coated cutting wheels.
WARNING: Use of a damaged flange or guard or
failure to use proper flange and guard can result in
injury due to wheel breakage and wheel contact. Refer
to the Accessories Chart for moreinformation.
Mounting non-hubbed wheels, without an
accessoryflange (Fig.G):
1. Place the tool on a table, guardup.
2. Place wheel6 against the backing flange7,
centering the wheel on the raised center (pilot) of the
backingflange.
3. While depressing the spindle lock button and with the
hex depressions facing away from the wheel, thread the
threaded locking flange8 on spindle so that the lugs
engage the two slots in thespindle.
4. While depressing the spindle lock button, tighten the
threaded locking flange8 using a hexwrench.
5. To remove the wheel, depress the spindle lock button
and loosen the threaded lockingflange.
Mounting non-hubbed wheels, with an
accessoryflange (Fig.H):
1. Place the tool on a table, guardup.
2. Place the accessory flange20 against the backing
flange7.
Guards
CAUTION: Guards must be used with all grinding
wheels, cutting wheels, sanding flap discs, wire
brushes, and wire wheels. The tool may be used
without a guard only when sanding with conventional
sanding discs. Refer to Figure A to see guards provided
with the unit. Some applications may require
purchasing the correct guard from your local dealer or
authorized servicecenter.
NOTE: Edge grinding and cutting can be performed with
Type 27wheels designed and specified for this purpose;
1/4" (6.35 mm) thick wheels are designed for surface
grinding while thinner Type 27wheels need to be examined
for the manufacturer's label to see if they can be used for
surface grinding or only edge grinding/cutting. A Type 1/41
guard must be used for any wheel where surface grinding
is forbidden. Cutting can also be performed by using a
Type1/41 wheel and a Type 1/41guard.
NOTE: See the Accessories Chart to select the proper guard
/ accessorycombination.
Mounting and Removing Guard (Fig.F)
CAUTION: Guards must be used with all grinding
wheels, cut‑off wheels, diamond coated wheels,
sanding flap discs, wire brushes, and wire wheels.
The tool may be used without a guard only when
sanding with conventional sanding discs. Some
DEWALT models are provided with a guard intended
for use with depressed center wheels (Type 27) and
hubbed grinding wheels (Type 27). The same guard is
designed for use with sanding flap discs (Type 27and
29) and wire brushes. Grinding and cutting with
wheels other than Type 27and 29require different
accessory guards not included with tool. Mounting
instructions for these accessory guards are included in
the accessorypackage.
1. Open the guard release lever10. Align the lugs14 on
the guard with the slots15 on the gearcase.
2. Push the guard down until the guard lugs engage and
rotate freely in the groove on the gear casehub.
3. With the guard latch open, rotate the guard9 into the
desired working position. The guard body should be
positioned between the spindle and the operator to
provide maximum operatorprotection.
4. Close the guard latch to secure the guard on the gear
case. You should not be able to rotate the guard by hand
when the latch is closed. Do not operate the grinder with
a loose guard or the clamp lever in openposition.
NOTE: If the gear case and motor housing become
separated by more than 1/8" (3 mm), the tool must
be serviced and re‑assembled by a DEWALT service
center. Failure to have the tool serviced may motor and
bearingfailure.
3. Reinstall screws to attach the gear case to the motor
housing. Tighten screws to 12.5 in.‑lbs. torque.
Overtightening could cause screws tostrip.

13
ENGLISH
Installing and Removing the Battery Pack
(Fig.K)
NOTE: For best results, make sure your battery pack is
fullycharged.
To install the battery pack11 into the tool handle, align the
battery pack with the rails inside the tool’s handle and slide it
into the handle until the battery pack is firmly seated in the
tool and ensure that it does notdisengage.
To remove the battery pack from the tool, press the release
button12 and firmly pull the battery pack out of the tool
handle. Insert it into the charger as described in the charger
section of thismanual.
OPERATION
WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can causeinjury.
could occur to the accessory, causing wires to fragment
from accessory wheel orcup.
Wire cup brushes or wire wheels install directly on the
threaded spindle without the use of locking flange. Use only
wire brushes or wheels provided with a 5/8"‑11 threaded
hub. These accessories are available at extra cost from your
local dealer or authorised servicecenter.
1. Place the tool on a table, guardup.
2. Thread the wheel on the spindle4 byhand.
3. Depress spindle lock button3 and use a wrench on the
hub of the wire wheel or brush to tighten thewheel.
4. To remove the wheel, reverse the aboveprocedure.
NOTICE: To reduce the risk of damage to the tool,
properly seat the wheel hub before turning the toolon.
Prior to Operation
• Install the guard and appropriate disc or wheel. Do not
use excessively worn discs orwheels.
• Be sure the threaded locking flange are mounted
correctly. Follow the instructions given in the
AccessoriesChart.
• Make sure the disc or wheel rotates in the direction of the
arrows on the accessory and thetool.
• Do not use a damaged accessory. Before each use
inspect the accessory such as abrasive wheels for chips
and cracks, backing pad for cracks, tear or excess wear,
wire brush for loose or cracked wires. If power tool or
accessory is dropped, inspect for damage or install an
undamaged accessory. After inspecting and installing
an accessory, position yourself and bystanders away
from the plane of the rotating accessory and run the
power tool at maximum no‑load speed for one minute.
Damaged accessories will normally break apart during
this testtime.
3. Place wheel6 against the accessory flange20,
centering the wheel on the raised center (pilot) of the
backingflange7.
4. While depressing the spindle lock button, tighten the
threaded nut21 using a hexwrench.
5. To remove the wheel, depress the spindle lock button
and loosen the threaded nut21.
Mounting Sanding Backing Pads (Fig.A, I)
NOTE: Use of a guard with sanding discs that use backing
pads, often called fiber resin discs, is not required. Since a
guard is not required for these accessories, the guard may or
may not fit correctly ifused.
WARNING: Failure to properly seat the clamp nut
and/or pad could result in serious injury (or damage to
the tool orwheel).
WARNING: Proper guard must be reinstalled for
grinding wheel, cutting wheel, sanding flap disc,
wire brush or wire wheel applications after sanding
applications arecomplete.
1. Place or appropriately thread backing pad19 on
thespindle.
2. Place the sanding disc18 on the backing pad19.
3. While depressing spindle lock button3, thread the
sanding clamp nut23 on spindle, piloting the raised
hub on the clamp nut into the center of sanding disc and
backingpad.
4. Tighten the clamp nut by hand. Then depress the spindle
lock button while turning the sanding disc until the
sanding disc and clamp nut aresnug.
5. To remove the wheel, grasp and turn the backing
pad and sanding pad while depressing the spindle
lockbutton.
Mounting and Removing Hubbed
Wheels (Fig.J)
Hubbed wheels install directly on the spindle. Thread of
accessory must match thread ofspindle.
1. Thread the wheel on the spindle4 byhand.
2. Depress the spindle lock button3 and use a wrench to
tighten the hub of thewheel.
3. Reverse the above procedure to remove thewheel.
NOTICE: Failure to properly seat the wheel before
turning the tool on may result in damage to the tool or
thewheel.
Mounting Wire Cup Brushes and
WireWheels (Fig.A, J)
WARNING: Failure to properly seat the brush/wheel
could result in serious injury (or damage to the tool
orwheel).
CAUTION: To reduce the risk of personal injury,
wear work gloves when handling wire brushes
and wheels. They can becomesharp.
CAUTION: To reduce the risk of damage to the
tool, wheel or brush must not touch guard when
mounted or while in use. Undetectable damage
Proper Hand Position (Fig.L)
WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.

ENGLISH
14
4. Maintain contact between the edge of the wheel and the
worksurface.
‑If grinding, sanding with flap discs or wire brushing
move the tool continuously in a forward and back
motion to avoid creating gouges in the worksurface.
‑If sanding with a backing pad, move the tool
constantly in a straight line to prevent burning and
swirling of worksurface.
NOTE: Allowing the tool to rest on the work surface without
moving will damage theworkpiece.
5. Remove the tool from work surface before turning tool
off. Allow the tool to stop rotating before laying itdown.
CAUTION: Use extra care when working over an
edge, as a sudden sharp movement of grinder may
beexperienced.
Precautions To Take When Working on a
Painted Workpiece
1. Sanding or wire brushing of lead based paint is NOT
RECOMMENDED due to the difficulty of controlling
the contaminated dust. The greatest danger of lead
poisoning is to children and pregnantwomen.
2. Since it is difficult to identify whether or not a paint
contains lead without a chemical analysis, we
recommend the following precautions when sanding
any paint:
Personal Safety
1. No children or pregnant women should enter the work
area where the paint sanding or wire brushing is being
done until all clean up iscompleted.
2. A dust mask or respirator should be worn by all persons
entering the work area. The filter should be replaced daily
or whenever the wearer has difficultybreathing.
NOTE: Only those dust masks suitable for working with
lead paint dust and fumes should be used. Ordinary
painting masks do not offer this protection. See your local
hardware dealer for the proper N.I.O.S.H. approvedmask.
3. NO EATING, DRINKING or SMOKING should be done in
the work area to prevent ingesting contaminated paint
particles. Workers should wash and clean up BEFORE
eating, drinking or smoking. Articles of food, drink, or
smoking should not be left in the work area where dust
would settle onthem.
Environmental Safety
1. Paint should be removed in such a manner as to
minimize the amount of dustgenerated.
2. Areas where paint removal is occurring should be sealed
with plastic sheeting of 4milsthickness.
3. Sanding should be done in a manner to reduce tracking
of paint dust outside the workarea.
Cleaning and Disposal
1. All surfaces in the work area should be vacuumed and
thoroughly cleaned daily for the duration of the sanding
project. Vacuum filter bags should be changedfrequently.
2. Plastic drop cloths should be gathered up and disposed
of along with any dust chips or other removal debris.
They should be placed in sealed refuse receptacles and
Surface Grinding, Sanding and Wire
Brushing (Fig.M)
CAUTION: Always use the correct guard per the
instructions in thismanual.
To perform work on the surface of a workpiece:
1. Allow the tool to reach full speed before touching the
tool to the worksurface.
2. Apply minimum pressure to the work surface, allowing
the tool to operate at high speed. Material removal rate is
greatest when the tool operates at highspeed.
3. Maintain an appropriate angle between the tool
and work surface. Refer to the chart according to
particularfunction.
Function Angle
Grinding 20˚-30˚
Sanding with Flap Disc 5˚-10˚
Sanding with Backing Pad 5˚-15˚
Wire Brushing 5˚-10˚
Spindle Lock (Fig.A)
The spindle lock button3 is provided to prevent the spindle
from rotating when installing or removing wheels. Operate
the spindle lock only when the tool is turned off, the battery
is removed and has come to a completestop.
NOTICE: To reduce the risk of damage to the tool, do
not engage the spindle lock while the tool is operating.
Damage to the tool will result and attached accessory
may spin off possibly resulting ininjury.
To engage the lock, depress the spindle lock button
and rotate the spindle until you are unable to rotate the
spindlefurther.
Trigger Switch and Lock‑off Lever (Fig.A)
WARNING: Before using the tool, check that the
auxilliary handle is tightenedsecurely.
WARNING: Hold the auxilliary handle and main
handle of the tool firmly to maintain control of the
tool at start up and during use and until the wheel
or accessory stops rotating. Make sure the wheel has
come to a complete stop before laying the tooldown.
1. To turn the tool on, push the lock‑off lever2 toward the
back of the tool, then depress the trigger switch1. The
tool will run while the switch isdepressed.
2. Turn the tool off by releasing the releasingswitch.
WARNING: Allow the tool to reach full speed before
touching tool to the work surface. Lift the tool from the
work surface before turning the tooloff.
NOTE: This tool has no provision to lock the switch in the ON
position, and should never be locked ON by any othermeans.
WARNING: To reduce the risk of serious personal
injury, ALWAYS hold securely in anticipation of a
suddenreaction.
Proper hand position requires one hand on the main
handle13 and the other hand on the auxilliary handle5, as
shown in FigureL.

15
ENGLISH
Tool Connect™ Chip (Fig.O)
WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can causeinjury.
Your tool is Tool Connect™ Chip ready and has a location for
installation of a Tool Connect™ Chip.
Tool Connect™ Chip is an optional application for your smart
device (such as a smart phone or tablet) that connects
the device to utilize the mobile application for inventory
management functions.
Refer to Tool Connect™Chip Instruction Sheet for
moreinformation.
The capacity of this tool is 7"(180mm) diameterx1/4"
(6mm) thick grinding or cutting wheels. It is important to
choose the correct guards, backing pads and flanges to
use with grinder accessories. See the Accessories Chart for
information on choosing the correctaccessories.
WARNING:Accessories must be rated for at least
the speed recommended on the tool warning label.
Wheels and other accessories running over their
rated accessory speed may fly apart and cause injury.
Threaded accessories must have a 5/8"‑11 hub. Every
unthreaded accessory must have a 7/8" (22 mm)
arbor hole. If it does not, it may have been designed
for a circular saw. Use only the accessories shown in
the Accessories Chart of this manual. Accessory
ratings must always be above tool speed as shown on
toolnameplate.
WARNING:Handle and store all abrasive wheels
carefully to prevent damage from thermal shock, heat,
mechanical damage, etc. Store in a dry protected area
free from high humidity, freezing temperatures or
extreme temperaturechanges.
Accessories
WARNING: Since accessories, other than those offered
by DEWALT, have not been tested with this product, use
of such accessories with this tool could be hazardous.
To reduce the risk of injury, only DEWALT recommended
accessories should be used with thisproduct.
Recommended accessories for use with your tool are available
at extra cost from your local dealer or authorized service
center. If you need assistance in locating any accessory, please
contact DEWALT call 1‑800‑4‑DEWALT (1-800-433-9258) or
visit our website:www.dewalt.com.
WARNING: Never use solvents or other harsh
chemicals for cleaning the non‑metallic parts of the
tool. These chemicals may weaken the plastic materials
used in these parts. Use a cloth dampened only with
water and mild soap. Never let any liquid get inside the
tool; never immerse any part of the tool into aliquid.
MAINTENANCE
WARNING: To reduce the risk of serious personal
injury, turn unit off and remove the battery pack
before making any adjustments or removing/
installing attachments or accessories. An
accidental start‑up can causeinjury.
Your DEWALT power tool has been designed to operate
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regularcleaning.
Edge Grinding and Cutting (Fig.N)
WARNING: Do not use edge grinding/cutting wheels
for surface grinding applications because these wheels
are not designed for side pressures encountered
with surface grinding. Wheel breakage and injury
mayresult.
CAUTION:Wheels used for edge grinding and
cutting may break or kick back if they bend or twist
while the tool is being used. In all edge grinding/
cutting operations, the open side of the guard must be
positioned away from theoperator.
NOTICE: Edge grinding/cutting with a Type27wheel
must be limited to shallow cutting and notching—less
than 1/2" (13mm) in depth when the wheel is new.
Reduce the depth of cutting/notching equal to the
reduction of the wheel radius as it wears down. Refer
to the Accessories Chart for more information. Edge
grinding/cutting with a Type 41wheel requires usage
of a Type 1guard.
1. Allow the tool to reach full speed before touching the
tool to the worksurface.
2. Apply minimum pressure to the work surface, allowing
the tool to operate at high speed. Grinding/cutting rate is
greatest when the tool operates at highspeed.
3. Position yourself so that the open‑underside of the wheel
is facing away fromyou.
4. Once a cut is begun and a notch is established in the
workpiece, do not change the angle of the cut. Changing
the angle will cause the wheel to bend and may cause
wheel breakage. Edge grinding wheels are not designed
to withstand side pressures caused bybending.
5. Remove the tool from the work surface before turning
the tool off. Allow the tool to stop rotating before laying
itdown.
disposed of through regular trash pick‑upprocedures.
During clean up, children and pregnant women should
be kept away from the immediate workarea.
3. All toys, washable furniture and utensils used by children
should be washed thoroughly before being usedagain.
Cleaning
WARNING: Blow dirt and dust out of all air vents with
clean, dry air at least once a week. To minimize the risk
of eye injury, always wear ANSI Z87.1approved eye
protection when performingthisprocedure.

ENGLISH
16
DCG440 ACCESSORIES CHART
Approved wheels for use wtih DCG440
Type 1 / T1
Type 27 / T27
Type 28 / T28†
Type 29 / T29
Non-approved wheels for DCG440
Type 11 / T11
Type 27Hubbed Grinding Wheels
Type 27 guard
(Deep) N527182
Type 27 hubbed wheel
Type 27, 28Depressed Center Grinding Wheels
Type 27 guard
(Deep) N527182
Type 27, 28 depressed
center wheel
Locking flange N452728
DC9071, DC9091, DC9096, DC9182, DC9280, DC9360,
DCB120, DCB122, DCB124, DCB127, DCB201, DCB203BT,
DCB207,DCB361
3YEARS FREE SERVICE ON DEWALT BATTERYPACKS
DCB200, DCB203, DCB204, DCB204BT, DCB205, DCB205BT,
DCB206, DCB208, DCB230, DCB240, DCB606, DCB609,
DCB612,DCB615
NOTE: Battery warranty voided if the battery pack is
tampered with in any way. DEWALT is not responsible for any
injury caused by tampering and may prosecute warranty
fraud to the fullest extent permitted bylaw.
90DAY MONEY BACK GUARANTEE
If you are not completely satisfied with the performance of
your DEWALT PowerTool or Nailer for any reason, you can
return it within 90days from the date of purchase with a
receipt for a full refund – no questionsasked.
LATIN AMERICA: This warranty does not apply to products
sold in Latin America. For products sold in Latin America,
see country specific warranty information contained in
the packaging, call the local company or see website for
warrantyinformation.
FREE WARNING LABEL REPLACEMENT: If your warning
labels become illegible or are missing, call 1‑800‑4‑DEWALT
(1-800-433-9258) for a freereplacement.
Three Year Limited Warranty
DEWALT will repair or replace, without charge, any defects
due to faulty materials or workmanship for three years
from the date of purchase (two years for batteries). This
warranty does not cover part failure due to normal wear
or tool abuse. For further detail of warranty coverage and
warranty repair information, visit www.dewalt.com or call
1‑800‑4‑DEWALT (1-800-433-9258). This warranty does
not apply to accessories or damage caused where repairs
have been made or attempted by others. THIS LIMITED
WARRANTY IS GIVEN IN LIEU OF ALL OTHERS, INCLUDING
THE IMPLIED WARRANTY OF MERCHANTABILITY AND
FITNESS FOR A PARTICULAR PURPOSE, AND EXCLUDES ALL
INCIDENTAL OR CONSEQUENTIAL DAMAGES. Some states do
not allow limitations on how long an implied warranty lasts
or the exclusion or limitation of incidental or consequential
damages, so these limitations may not apply to you. This
warranty gives you specific legal rights and you may have
other rights which vary in certain states orprovinces.
In addition to the warranty DEWALT tools are covered byour:
1YEAR FREE SERVICEDEWALT will maintain the tool and
replace worn parts caused by normal use, for free, any time
during the first twoyears. afterpurchase.
2YEARS FREE SERVICE ON DEWALT BATTERYPACKS
Register Online
Thank you for your purchase. Register your product nowfor:
• WARRANTY SERVICE: Registering your product will
help you obtain more efficient warranty service in case
there is a problem with yourproduct.
• CONFIRMATION OF OWNERSHIP: In case of an
insurance loss, such as fire, flood or theft, your registration
of ownership will serve as your proof ofpurchase.
• FOR YOUR SAFETY: Registering your product will
allow us to contact you in the unlikely event a safety
notification is required under the Federal Consumer
SafetyAct.
• Register online at www.dewalt.com
Repairs
The charger and battery pack are notserviceable. There are
no serviceable parts inside the charger or batterypack.
WARNING: To assure product SAFETY and RELIABILITY,
repairs, maintenance and adjustment (including brush
inspection and replacement, when applicable) should
be performed by a DEWALT factory service center or a
DEWALT authorized service center. Always use identical
replacementparts.
Installing the Tool Connect™ Chip
1. Remove the retaining screws20 that hold theTool
Connect™ Chip protective cover21into thetool.
2. Remove the protective cover and insert the Tool
Connect™ Chip into the empty pocket22.
3. Ensure that the Tool Connect™ Chip is flush with the
housing. Secure it with the retaining screws and tighten
thescrews.
4. Refer to Tool Connect™Chip Instruction Sheet for
furtherinstructions.

17
ENGLISH
Type 27Depressed Center Grinding Wheels
Type 27 guard
(Shallow) N775399**
Type 27 depressed
center wheel
Locking flange N452728
Type 1/41 Cutting Wheels
Type 1/41 guard
N532558**
Type 1/41 abrasive
cutting wheel
Locking flange N452728
Diamond Cutting Wheels
Type 1/41 guard
N532558**
Diamond cutting
wheel
Locking flange N452728
Sanding Discs
Rubber backing pad
DAJHXKMDO1**
DAJHXKHDO1**
Sanding disc
Sanding clamp nut
(Included with
rubber backing pad
DAJHXKMDO1** or
DAJHXKHDO1**)
Hubbed Wheel Wrench
Hubbed wheel wrench
N541784**
Type 1/41 guards are intended for use with Type
1/41 cutting wheels and Type 27wheels marked for
cutting only. Grinding with wheels other than Type
27and Type 29require different accessory guards.
Always use the smallest proper guard possible that
does not contact theaccessory.
** NOTE: Available at extra cost from your local dealer or
authorized servicecenter.
*** NOTE: These can be used with only the Type 27guard,
N527182guard.
†NOTE: Type 28depressed center wheelsonly.
Hubbed Sanding Flap Discs
Type 27 guard
(Deep) N527182
Hubbed sanding
flap disc
Non-Hubbed Sanding Flap Discs
Type 27 guard
(Deep) N527182
Non-Hubbed sanding
flap disc
Locking flange N452728
Hubbed Wire Cup Wheels
Type 27 guard
(Deep) N527182
Hubbed wire
cup wheel
Hubbed Wire Wheels
Type 27 guard
(Deep) N527182
Hubbed wire wheel
Type 27Spacer
Type 27 spacer N830903 is used to hold a
wider diameter on wheels and to gap the T27
depressed center wheel further down in the
Type 27 Guard (Deep) N527182.
Type 27Depressed Center Grinding Wheels
Type 27 guard
(Deep) N527182
Type 27 spacer
N830903**/***
Type 27 depressed
center wheel
Nut N665613 **/***
Type 27Guard (Shallow)
Type 27 Guard (Shallow) N775399** is used
to reduce angle of operation and minimize gap
between the guard.

FRANÇAIS
18
1) Sécurité du lieu de travail
a ) Tenir l’aire de travail propre et bien éclairée.
Les lieux encombrés ou sombres sont propices
auxaccidents.
b ) Ne pas faire fonctionner d’outils électriques
dans un milieu déflagrant, tel qu’en présence de
liquides, de gaz ou de poussières inflammables.
Les outils électriques produisent des étincelles qui
pourraient enflammer la poussière ou lesvapeurs.
c ) Éloigner les enfants et les personnes à proximité
pendant l’utilisation d’un outil électrique. Une
distraction pourrait en faire perdre la maîtrise
àl’utilisateur.
2) Sécurité en matière d’électricité
a ) Les fiches des outils électriques doivent
correspondre à la prise. Ne jamais modifier la
fiche d’aucune façon. Ne jamais utiliser de fiche
d’adaptation avec un outil électrique mis à la
terre. Le risque de choc électrique sera réduit par
l’utilisation de fiches non modifiées correspondant à
laprise.
b ) Éviter tout contact physique avec des surfaces
mises à la terre comme des tuyaux, des radiateurs,
des cuisinières et des réfrigérateurs. Le risque de
choc électrique est plus élevé si votre corps est mis à
laterre.
c ) Ne pas exposer les outils électriques à la pluie ou
à l’humidité. La pénétration de l’eau dans un outil
électrique augmente le risque de chocélectrique.
d ) Ne pas utiliser le cordon de façon abusive. Ne
jamais utiliser le cordon pour transporter, tirer
ou débrancher un outil électrique. Tenir le
cordon éloigné de la chaleur, de l’huile, des bords
tranchants et des pièces mobiles. Les cordons
endommagés ou enchevêtrés augmentent les risques
de chocélectrique.
e ) Pour l’utilisation d’un outil électrique à l’extérieur,
se servir d’une rallonge convenant à cette
application. L’utilisation d’une rallonge conçue pour
l’extérieur réduira les risques de chocélectrique.
f ) S’il est impossible d’éviter l’utilisation d’un
outil électrique dans un endroit humide,
brancher l’outil dans une prise ou sur un circuit
d’alimentation dotés d’un disjoncteur de fuite à
la terre (GFCI). L’utilisation de ce type de disjoncteur
réduit les risques de chocélectrique.
3) Sécurité personnelle
a ) Être vigilant, surveiller le travail effectué et faire
preuve de jugement lorsqu’un outil électrique est
utilisé. Ne pas utiliser d’outil électrique en cas de
fatigue ou sous l’influence de drogues, d’alcool ou
de médicaments. Un simple moment d’inattention en
utilisant un outil électrique peut entraîner des blessures
corporellesgraves.
b ) Utiliser des équipements de protection
individuelle. Toujours porter une protection
oculaire. L’utilisation d’équipements de protection
comme un masque antipoussière, des chaussures
AVERTISSEMENTS GÉNÉRAUX SUR LA
SÉCURITÉ DES OUTILS
AVERTISSEMENT : lisez tous les avertissements de
sécurité, toutes les instructions, les illustrations
et les caractéristiques fournis avec cet outil
électrique. Ne pas suivre toutes les instructions
comprises aux présentes peut conduire à un choc
électrique, un incendie et/ou des blessuresgraves.
CONSERVER TOUS LES
AVERTISSEMENTS ET TOUTES
LES DIRECTIVES POUR UN
USAGEULTÉRIEUR
Le terme « outil électrique » cité dans les avertissements se
rapporte à votre outil électrique à alimentation sur secteur
(avec fil) ou par piles (sansfil).
Définitions: symboles et termes
d'alarmessécurité
Ces guides d'utilisation utilisent les symboles et termes
d'alarmes sécurité suivants pour vous prévenir de situations
dangereuses et de risques de dommages corporels
oumatériels.
DANGER : indique une situation dangereuse
imminente qui, si elle n’est pas évitée, entraînera la
mort ou des blessuresgraves.
AVERTISSEMENT : indique une situation
potentiellement dangereuse qui, si elle n’est pas évitée,
pourrait entraîner la mort ou des blessuresgraves.
ATTENTION : indique une situation potentiellement
dangereuse qui, si elle n’est pas évitée, pourrait
entraîner des blessures légères oumodérées.
(Si utilisé sans aucun terme) Indique un message
propre à lasécurité.
AVIS : indique une pratique ne posant aucun risque
de dommages corporels mais qui par contre, si rien
n’est fait pour l’éviter, pourrait poser des risques de
dommagesmatériels.
Utilisation prévue
Cette meuleuse d’angle moyen très robuste est conçue pour
des applications de meulage, sablage, de nettoyage avec
une brosse métallique et de découpage professionnelles sur
divers sites de travail (p. ex. les chantiers deconstruction).
NE PAS utiliser en conditions humides ou en présence de
liquides ou de gazinflammables.
Ces meuleuses de petit angle très robustes sont des outils
électriques professionnels. NE PAS laisser les enfants entrer
en contact avec l’outil. Une supervision est requise lorsque
des utilisateurs inexpérimentés utilisent cetoutil.
AVERTISSEMENT : lire tous les avertissements
de sécurité et toutes les directives. Le non‑respect
des avertissements et des directives pourrait se
solder par un choc électrique, un incendie et/ou une
blessuregrave.
AVERTISSEMENT : afin de réduire le risque de
blessures, lire le mode d’emploi del’outil.