DeWalt DWE4100, DWE4151 User Manual

Final Page size: A5 (148mm x 210mm)

DWE4100
DWE4151

DeWALT

English (original instructions) 3

Copyright

B

Fig. A

Fig. B1

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1

3

7

8

2 6

4

5

11

6

Fig. B2

9

15

6

10

9

10

8

12

10

2

1

Fig. C

7

Fig. D

Fig. F

5

Fig. E1

5

14

13

14

4

2

4

Fig. E2

2

13

5

14

4

2

2

eWALT

e

English (original instructions)

ANGLE GRINDERS
DWE4100, DWE4151

ENGLISH

Congratulations!

You have chosen a D
product development and innovation make D
most reliable partners for professional power tool users.

tool. Years of experience, thorough

WALT one of the

Technical Data

DWE4100 DWE4151
Voltage V
Type 1 1
Power input W 900 900
No-load/rated speed min
Wheel diameter mm 100 125
Spindle diameter M10 M14
Spindle length mm 14.2 14.2
Weight kg 1.95 2.05*
* weight includes side handle and guard

Noise values and vibration values (triax vector sum) according to EN 60745-2-3:

(sound pressure) dBA 91.5

L

PA

LWA (sound power) dBA 102.5
K (sound power

uncertainty)

Surface grinding

Vibration emission value

=

a

h,AG

Uncertainty K =

Disc sanding

Vibration emission value

=

a

h,DS

Uncertainty K =

The vibration emission level given in this information sheet has
been measured in accordance with a standardised test given in
EN 60745 and may be used to compare one tool with another. It
may be used for a preliminary assessment of exposure.

WARNING: The declared vibration emission level
represents the main applications of the tool. However if



the tool is used for different applications, with different
accessories or poorly maintained, the vibration emission
may differ. This may significantly increase the exposure
level over the total working period.

An estimation of the level of exposure to vibration should
also take into account the times when the tool is switched
off or when it is running but not actually doing the job.
This may significantly reduce the exposure level over the
total working period.

Identify additional safety measures to protect the operator
from the effects of vibration such as: maintain the tool
and the accessories, keep the hands warm, organisation
of work patterns.

dBA 3.0 3.0

m/s²

m/s²

m/s²

m/s² 1.5 1.5

AC

-1

220-240 220-240

12000 11800

91.5

102.5

11.0 11.0

1.5 1.5

6.8 6.8

WARNING: To reduce the risk of injury, read the
instruction manual.

Definitions: Safety Guidelines

The definitions below describe the level of severity for each
signal word. Please read the manual and pay attention to
thesesymbols.

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.
NOTICE: Indicates a practice not related to

personal injury which, if not avoided, may result in
propertydamage.

Denotes risk of electricshock.



Denotes risk offire.



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 mains­operated (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.

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

3

ENGLISH

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 residual current device (RCD)
protected supply. Use of an RCD 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 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 energising 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

jewellery. Keep your hair and clothing away from
moving parts. Loose clothes, jewellery or long hair can be

caught in movingparts.

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 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. 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) 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.

ADDITIONAL SPECIFIC SAFETY RULES

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.

4

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 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 can not be

adequately guarded or controlled.

f ) Threaded mounting of accessories must match

the grinder spindle thread. For accessories mounted
by flanges, the arbour 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 wheel 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 power tool by insulated gripping surfaces only,

when performing an operation where the cutting
accessory may contact hidden wiring or its own
cord. Cutting accessory contacting a "live" wire may make

exposed metal parts of the power tool "live" and could give
the operator an electrical shock.

k ) Position the cord clear of the spinning accessory. I f

you lose control, the cord may be cut or snagged and your
hand or arm may be pulled into the spinning accessory.

ENGLISH

l ) 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.

m ) 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.

n ) Regularly clean the power tool’s air vents. The

motor’s fan will draw the dust inside the housing and
excessive accumulation of powdered metal may cause
electrical hazards.

o ) Do not operate the power tool near flammable

materials. Sparks could ignite these materials.

p ) Do not use accessories that require liquid coolants.

Using water or other liquid coolants may result in
electrocution or shock.

FURTHER SAFETY INSTRUCTIONS FOR ALL
OPERATIONS

Causes and Operator Prevention
of Kickback

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.

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

5

ENGLISH

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 centre depressed wheels

must 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 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
operations, 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 cut­off 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 re-enter 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 manufacturer’s 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.

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 ) If the use of a guard is recommended 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.

Additional Safety Rules for Grinders

• 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.

• The grinding surface of the centre depressed wheels must
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.

• Do not use Type 11 (flaring cup) wheels on this tool.
Using inappropriate accessories can result in injury.

• Always use side handle. Tighten the handle securely. The
side handle should always be used to maintain control of the
tool at all times.

6

DeWALT

DeWALT

Residual Risks

In spite of the application of the relevant safety regulations
and the implementation of safety devices, certain residual risks
cannot be avoided. These are:

• Impairment of hearing.

• Risk of personal injury due to flying particles.

• Risk of burns due to accessories becoming hot during
operation.

• Risk of personal injury due to prolonged use.

• Risk of dust from hazardous substances.

Markings on Tool

The following pictograms are shown on the tool:

Read instruction manual before use.

Wear ear protection.

Wear eye protection.

Date Code Position (Fig.A)

The date code
is printed into thehousing.

Example:

15

, which also includes the year of manufacture,

2018 XX XX

Year of Manufacture

Package Contents

The package contains:
1 Angle grinder
1 Guard
1 Side handle
1 Flange set
1 Hex key
1 Instruction manual

• Check for damage to the tool, parts or accessories which may
have occurred during transport.

• Take the time to thoroughly read and understand this manual
prior to operation.

Description (Fig. A, C)

WARNING: Never modify the power tool or any part of it.
Damage or personal injury could result.



1

Spindle lock button

2

Spindle

3

Side handle

4

Backing flange

5

Threaded clamp nut

6

Guard

7

Slider switch

8

Guard release lever

ENGLISH

Intended Use

The DWE4100 and DWE4151 heavy-duty angle grinders have
been designed for professional grinding, sanding, wire brushing
and cutting applications.

DO NOT use grinding wheels other than centre depressed
wheels and flap discs.

DO NOT use under wet conditions or in the presence of
flammable liquids or gases.

These heavy-duty 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.

• This product is not intended for use by persons (including
children) suffering from diminished physical, sensory or
mental abilities; lack of experience, knowledge or skills
unless they are supervised by a person responsible for their
safety. Children should never be left alone with this product.

Electrical Safety

The electric motor has been designed for one voltage only.
Always check that the battery pack voltage corresponds to the
voltage on the rating plate. Also make sure that the voltage of
your charger corresponds to that of yourmains.

Your
accordance with EN60335; therefore no earth wire
isrequired.

If the supply cord is damaged, it must be replaced by a
specially prepared cord available through the
serviceorganisation.

charger is double insulated in

Mains Plug Replacement
(U.K. & Ireland Only)

If a new mains plug needs to be fitted:

• Safely dispose of the old plug.

• Connect the brown lead to the live terminal in the plug.

• Connect the blue lead to the neutral terminal.

WARNING: No connection is to be made to the earth



terminal.

Follow the fitting instructions supplied with good quality plugs.
Recommended fuse: 13 A.

Using an Extension Cable

If an extension cable is required, use an approved 3–core
extension cable suitable for the power input of this tool (see
Technical Data).The minimum conductor size is 1.5 mm
maximum length is30 m.

When using a cable reel, always unwind the cable completely.

2

; the

ASSEMBLY AND ADJUSTMENTS

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect tool from power



source before making any adjustments or removing/
installing attachments or accessories. Before
reconnecting the tool, depress and release the
trigger switch to ensure that the tool is off.

7

ENGLISH

DeWALT

Attaching Side Handle (Fig. A)

WARNING: Before using the tool, check that the handle is
tightened securely.



Screw the side handle
side of the gear case. The side handle should always be used to
maintain control of the tool at all times.

3

tightly into one of the holes on either

Accessories and Attachments

It is important to choose the correct guards, backing pads and
flanges to use with grinder accessories. Refer to chart at the
end of this section for information on choosing the correct
accessories.

NOTE: Edge grinding can be performed with Type27 wheels
designed and specified for this purpose.

WARNING: Accessories must be rated for at least the
speed recom mended on the tool warning label. Wheels



and other accessories running over rated accessory speed
may burst and cause injury. Threaded accessories must
have a M14 hub. Every unthreaded accessory must have
a 22 mm arbor hole. If it does not, it may have been
designed for a circular saw and should not be used. Use
only the accessories shown in the chart at the end of this
section. Accessory ratings must be above listed minimum
wheel speed as shown on tool nameplate.

Mounting Guards

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect tool from power



source before making any adjustments or removing/
installing attachments or accessories. Before
reconnecting the tool, depress and release the
trigger switch to ensure that the tool is off.

CAUTION: Guards must be used with this grinder.



When using the DWE4100 or the DWE4151 grinder for cutting
metal or masonry, a Type 1 guard MUST be used. Type1 guards
are available at extra cost from

NOTE: Please refer to the Grinding and Cutting Accessory
Chart at the end of this section to see other accessories that can

be used with these grinders.

Mounting and Removing (TYPE 27)
One-touch Guard (Fig. B1)

NOTE: If your grinder is supplied with a keyless One-Touch
guard, ensure the screw, lever, and spring are fitted correctly
before mounting the guard.

1. Press the guard release lever

2. While holding the guard release lever open, align the lugs
on the guard with the slots

3. Keeping the guard release lever open, push the guard down
until the lugs engage then rotate them into the groove on
the gear case hub. Release the guard release lever.

4. With the spindle facing the operator, rotate the guard
clockwise into the desired working position. The guard body
should be positioned between the spindle and the operator
to provide maximum operator protection.

distributors.

8

.

10

on the gear case.

5. For easy adjustment, the guard can be rotated in the

clockwise direction. NOTE: The guard release lever should
snap into one of the alignment holes
collar. This ensures that the guard is secure. The guard can
be repositioned the opposite direction by depressing the
guard release lever.

6. To remove the guard, follow steps 1–3 of these instructions
in reverse.

Guard with fixing screw (Fig. B2)

1. Place the angle grinder on a table, spindle

2. Align the lugs

3. Press the guard
position.)

4. Securely tighten the screw

5. To remove the guard, slacken the screw.

CAUTION: If the guard cannot be tightened by the
adjusting screw, do not use the tool. To reduce the risk of



personal injury, take the tool and guard to a service centre
to repair or replace the guard.

MOUNTING Closed (Type 1) guard

WARNING: If present, the One-Touch guard screw, lever,
and spring must be removed before attempting to mount



the closed (Type 1) guard. The removed parts must be
retained and reinstalled to use the One-Touch guard.
Noting the position of these parts before disassembly will
aid in reassembly.

1. Open the guard latch. Align the lugs
the slots

2. Push the guard down until the guard lug engages and
rotates freely in the groove on the gear case hub.

3. Rotate guard into 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
cover. You should be unable to rotate the guard by hand
when the latch is in closed position. If rotation is possible,
tighten the adjusting screw with the clamp lever in the
closed position. Do not operate grinder with a loose guard
or clamp lever in open position.

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: If, after a period of time the closed (Type 1) guard
becomes loose, tighten the adjusting screw with the clamp
lever in the closed position.

9

CAUTION: If the guard cannot be tightened by the
adjusting screw, do not use the tool. To reduce the risk



of personal injury, take the tool and guard to authorized
repair agent to repair or replace the guard.

NOTICE: Do not tighten adjusting screw with clamp
lever in open position. Undetectable damage to guard or
mounting hub may result.

9

with the slots

6

down and rotate it to the required

12

10

on the gear case.

.

10

11

.

9

on the guard

2

on the guard with

up.

8

Fitting and Removing a Grinding or Cutting
Disc (Fig. A, D, E1, E2)

WARNING: Do not use a damaged disc.



1. Place the tool on a table, guard up.

2. Fit the backing flange
(Fig.D).

3. Place the disc
a disc with a raised centre, make sure that the raised

13

centre

4. Screw the threaded clamp nut
(Fig.E1):

b. The ring on the threaded clamp nut

5. Press the spindle lock button
until it locks in position.

6. Tighten the threaded clamp nut
provided or a two pin spanner.

7. Release the spindle lock.

8. To remove the disc, loosen the threaded clamp nut
the hex key provided or a two pin spanner.

NOTE: Edge grinding can be performed with Type27 wheels
designed and specified for this purpose; 6 mm thick wheels are
designed for surface grinding while 3 mm wheels are designed
for edge grinding. Cutting can be performed by using a Type 1
wheel and a Type 1 guard.

is facing the backing flange

a. The ring on the threaded clamp nut

the disc when fitting a grinding disc (Fig. E1);

from the disc when fitting a cutting disc (Fig. E2).

4

correctly onto the spindle

14

on the backing flange

1

4

4

5

onto the spindle

5

5

and rotate the spindle

5

with the hex key

2

. When fitting

.

2

must face towards

must face away

2

5

with

Mounting Wire Brushes
and Wire Wheels

Wire cup brushes or wire wheels screw directly on the grinder
spindle without the use of flanges. Use only wire brushes or
wheels provided with a M14threaded hub. A Type 27 guard is
required when using wire brushes and wheels.

CAUTION: Wear work gloves when handling wire
brushes and wheels. They can become sharp.



CAUTION: Wheel or brush must not touch guard when
mounted or while in use. Undetectable damage could



occur to the accessory, causing wires to fragment from
accessory wheel or cup.

1. Thread the wheel on the spindle by hand.

2. Depress spindle lock button and use a wrench on the hub of
the wire wheel or brush to tighten the wheel.

3. To remove the wheel, reverse the aboveprocedure.

NOTICE: Failure to properly seat the wheel hub before
turning the tool on may result in damage to tool or wheel.

Fitting and Removing a
Backing Pad/Sanding Sheet (Fig. A)

1. Place the tool on a table or flat surface, with the guard
facing up.

2. Remove the backing flange

4

.

3. Place the rubber backing pad correctly onto the spindle

4. Place the sanding sheet on the rubber backing pad.

5. Screw the threaded clamp nut
on the threaded clamp nut must face towards the rubber
backing pad.

6. Press the spindle lock button
until it locks in position.

7. Tighten the threaded clamp nut
provided or a two pin spanner.

8. Release the spindle lock.

9. To remove the rubber backing pad, loosen the threaded
clamp nut
spanner.

5

with the hex key provided or a two pin

5

onto the spindle. The ring

1

and rotate the spindle

5

with the hex key

Fitting a Wire Cup Brush

Screw the wire cup brush directly onto the spindle without the
use of the spacer and threaded flange.

Prior to Operation

• Install the guard and appropriate disc or wheel. Do not use
excessively worn discs or wheels.

• Be sure the inner and outer flange are mounted correctly.
Follow the instructions given in the Grinding and Cutting

Accessory 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.

OPERATION

Instructions for Use

WARNING: Always observe the safety instructions and
applicable regulations.



WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect tool from power



source before making any adjustments or removing/
installing attachments or accessories. Before
reconnecting the tool, depress and release the
trigger switch to ensure that the tool is off.

WARNING:

• Ensure all materials to be ground or cut are secured



in place.

• Secure and support the workpiece. Use clamps or a
vice to hold and support the workpiece to a stable
platform. It is important to clamp and support the
workpiece securely to prevent movement of the
workpiece and loss of control. Movement of the

ENGLISH

2

2

.

9

ENGLISH

e

workpiece or loss of control may create a hazard and
cause personal injury.

• 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.

• Always wear regular working gloves while operating
this tool.

• The gear becomes very hot during use.

• Apply only a gentle pressure to the tool. Do not exert
side pressure on thedisc.

• Avoid overloading. Should the tool become hot, let it
run a few minutes under no load condition.

• Avoid overloading. Should the tool become hot, let it
run a few minutes under no load condition to cool the
accessory. Do not touch accessories before they have
cooled. The discs become very hot during use.

• Never work with the grinding cup without a suitable
protection guard inplace.

• Do not use the power tool with a cut-off stand.

• Never use blotters together with bonded abrasive
products.

• Be aware, the wheel continues to rotate after the tools
is switched off.

Proper Hand Position (Fig. A, F)

WARNING: To reduce the risk of serious personal injury,
ALWAYS use proper hand position as shown.



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 side handle
with the other hand on the body of the tool, as shown in
FigureA.

3

Switches

CAUTION: Hold the side handle and body 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 be fore
laying the tool down.

NOTE: To reduce unexpected tool movement, do not switch
the tool on or off while under load conditions. Allow the grinder
to run up to full speed before touching the work surface. Lift the
tool from the surface before turning the tool off. Allow the tool
to stop rotating before putting it down.

Slider Switch (Fig.C)

WARNING: Before connecting the tool to a power supply,
be sure the slider switch is in the off position by pressing



the rear part of the switch and releasing. Ensure the slider
switch is in the off position as described above after any
interruption in power supply to the tool, such as the

activation of a ground fault interrupter, throwing of a
circuit breaker, accidental unplugging, or power failure. If
the slider switch is locked on when the power is connected,
the tool will start unexpectedly.

To start the tool, slide the ON/OFF slider switch
front of the tool. To stop the tool, release the ON/OFF slider
switch.

For continuous operation, slide the switch toward the front of
the tool and press the forward part of the switch inward. To stop
the tool while operating in continuous mode, press the rear part
of the slider switch and release.

7

Spindle Lock (Fig. A)

The spindle lock
rotating when installing or removing wheels. Operate the
spindle lock only when the tool is turned off, unplugged from
the power supply, and has come to a complete stop.

To engage the lock, depress the spindle lock button and rotate
the spindle until you are unable to rotate the spindle further.

1

is provided to prevent the spindle from

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.

Metal Applications

When using the tool in metal applications, make sure that a
residual current device (RCD) has been inserted to avoid residual
risks caused by metalswarf.

If the power supply is shut off by the RCD, take the tool to an
authorised D

,

To avoid build-up of metal swarf inside the machine, we
recommend to clear the ventilation slots on a daily basis. Refer
to Maintenance.

WALT repair agent.

WARNING: In extreme working conditions, conductive
dust can accumulate inside the machine housing when



working with metal. This can result in the protective
insulation in the machine becoming degraded with a
potential risk of an electrical shock.

Cutting Metal

When cutting, work with moderate feed, adapted to the
material being cut. Do not exert pressure onto the cutting disc,
tilt or oscillate the machine.

Do not reduce the speed of running down cutting discs by
applying sideward pressure.

The machine must always work in an upgrinding motion.
Otherwise, the danger exists of it being pushed uncontrolled
out of the cut.

When cutting profiles and square bar, it is best to start at the
smallest cross section.

toward the

10

DeWALT

DeWALT

D

b

D

D

d

Rough Grinding

DeWALT

e

Never use a cutting disc for roughing.
Always use the guard type 27.

The best roughing results are achieved when setting the
machine at an angle of 30° to 40°. Move the machine back and
forth with moderate pressure. In this manner, the workpiece
will not become too hot, does not discolour and no grooves are
formed.

Cutting Stone

The machine shall be used only for dry cutting. For cutting
stone, it is best to use a diamond cutting disc. Operate the

machine only with additional dust protection mask.

Working Advice

Exercise caution when cutting slots in structural walls.
Slots in structural walls are subject to the country-specific
regulations. These regulations are to be observed under all
circumstances.Before beginning work, consult the responsible
structural engineer, architect or the construction supervisor.

Using Flap Discs

WARNING: Metal dust build-up. Extensive use of flap
discs in metal applications can result in the increased



potential for electric shock. To reduce this risk, insert an
RCD before use and clean the ventilation slots daily by
blowing dry compressed air into the ventilation slots
inaccordance with the below maintenance instructions.

MAINTENANCE

Your
over a long period of time with a minimum of maintenance.
Continuous satisfactory operation depends upon proper tool
care and regularcleaning.

power tool has been designed to operate

WARNING: To reduce the risk of serious personal
injury, turn tool off and disconnect tool from power



source before making any adjustments or removing/
installing attachments or accessories. Be sure the

trigger switch is in the OFF position. An accidental start-up
can cause injury.

Pop-off Brushes

The motor will be automatically shut off indicating that the
carbon brushes are nearly worn out and that the tool needs
servicing. The carbon brushes are not user-serviceable. Take the
tool to an authorised D

WALT repair agent.

Lubrication

Your power tool requires no additionallubrication.

ENGLISH

Cleaning

WARNING: Blow dirt and dust out of the main housing
with dry air as often as dirt is seen collecting in and around



the air vents. Wear approved eye protection and approved
dust mask when performing thisprocedure.

WARNING: Never use solvents or other harsh chemicals
for cleaning the non-metallic parts of the tool. These



chemicals may weaken the 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.

Optional Accessories

WARNING: Since accessories, other than those offered
by



of such accessories with this tool could be hazardous.
To reduce the risk of injury, only
accessories should be used with thisproduct.

Consult your dealer for further information on the
appropriateaccessories.

d

b

D

, have not been tested with this product, use

-1

]

recommended

Periphical

speed
[m/s]

Threaded hole

length
[mm]

Max.

[mm]

D b d

115 6

125 6

115 - - 11,800 80 -

125 - - 11,800 80 -

75 30 M14 11,800 45 16.0

115 12 M14 11,800 80 16.0

125 12 M14 11,800 80 16.0

Min.

[mm]

Rotation
[min.

22,23

11,800 80 -

22,23

11,800 80 -

Protecting the Environment

Separate collection. Products and batteries marked
with this symbol must not be disposed of with normal
household waste.

Products and batteries contain materials that can
be recovered or recycled reducing the demand for raw
materials. Please recycle electrical products and batteries
according to local provisions. Further information is available at
www.2helpU.com.

11

ENGLISH

GRINDING AND CUTTING ACCESSORY CHART

Guard Type Accessory Description How to Fit Grinder

Depressed centre
grinding disc

TYPE 27
GUARD

Flap wheel

Wire wheels

Wire wheels with
threaded nut

Wire cup with
threaded nut

Type 27 guard

Backing flange

Type 27 depressed
centre wheel

Threaded clamp nut

Type 27 guard

Wire wheel

Type 27 guard

Wire brush

Backing pad/
sanding sheet

Type 27 guard

Rubber backing pad

Sanding disc

Threaded clamp nut

12

GRINDING AND CUTTING ACCESSORY CHART (CONT.)

Guard Type Accessory Description How to Fit Grinder

Masonry cutting
disc, bonded

ENGLISH

TYPE 1
GUARD

TYPE 1
GUARD

OR

TYPE 27
GUARD

Metal
cutting disc,
bonded

Diamond cutting
wheels

Type 1 guard

Backing flange

Cutting wheel

Threaded clamp nut

13

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Luxembourg België en Luxemburg

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[e-mail]

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Tel: [phone]
Fax: [phone]

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Sanayi ve Ticareet Bakanlığı tebliğince kullanim ömrü 7 yıldır.
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Kingdom

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N659327 12/18