DeWalt DWE4887N User Manual
DWE4887N
English (original instructions) 3
Français (traduction de la notice d’instructions originale) 11
(ﺓﻲﻠﺻﻷا تﺎﻤﻴﻠﻌﺘﻟا ﻦﻋ ﻢﺟﺮﺘﻣ) :ﺔﻴﺑﺮﻌﻟﺍ 20
2
Copyright DEWALT
Figure 1
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c
Figure 2
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Figure 3
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b
g
f
a
d
e
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Figure 4
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10 mm max. 10 mm max.
10 mm max. 10 mm max.
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DIE GRINDER
DWE4887N
ENGLISH
Congratulations!
You have chosen a DEWALT tool. Years of
experience, thorough product development and
innovation make DEWALT one of the most reliable
partners for professional power tool users.
Technical Data
DWE4887N
Voltage V
Type 1
Power input W 450
No load speed min
Maximum wheel diameter mm 38
Spindle M15
Collet size mm 6
Weight kg 1.6
AC
-1
220–240
127
25000
Defi nitions: 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
WARNING: Indicates a potentially
CAUTION: Indicates a potentially
NOTICE: Indicates a practice not
Denotes risk of electric shock.
Denotes risk of fire.
WARNING: To reduce the risk of injury,
hazardous situation which, if not avoided,
will result in death or serious injury.
hazardous situation which, if not
avoided, could result in death or
serious injury.
hazardous situation which, if not
avoided, may result in minor or
moderate injury.
related to personal injury which, if
not avoided, may result in property
damage.
read the instruction manual.
General Power Tool Safety Warnings
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.
SAVE ALL WARNINGS AND INSTRUCTIONS
FOR FUTURE REFERENCE
The term “power tool” in the warnings refers to your
mains-operated (corded) power tool or batteryoperated (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 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
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ENGLISH
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,
clothing and gloves 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.
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 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.
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
a) This power tool is intended to function
as a grinder. 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 sanding, wire
brushing, polishing and cutting-off 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.
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ENGLISH
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) The arbour size of wheels, flanges, backing
pads or any other accessory must properly
fit the spindle of the power tool. Accessories
with arbour 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.
g) Mandrel mounted wheels, sanding drums,
cutters or other accessories must be
fully inserted into the collet or chuck. If
the mandrel is insufficiently held and/or the
overhang of the wheel is too long, the mounted
wheel may become loose and be ejected at
high velocity.
h) 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.
i) 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.
j) 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.
k) 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 electric shock.
l) Always hold the tool firmly in your hand(s)
during start up. The reaction torque of the
motor, as it accelerates to full speed, can cause
the tool to twist.
m) Use clamps to support workpiece whenever
practical. Never hold a small workpiece in
one hand and the tool in the other while in
use. Clamping a small workpiece allows you
to use your hand(s) to control the tool. Round
material such as dowel rods, pipes or tubing
have a tendency to roll while being cut, and
may cause the bit to bind or jump toward you.
n) Position the cord clear of the spinning
accessory. If you lose control, the cord may be
cut or snagged and your hand or arm may be
pulled into the spinning accessory.
o) 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.
p) After changing bits or making any
adjustments, make sure the collet nut, chuck
or any other adjustment devices are securely
tightened. Loose adjustment devices can
unexpectedly shift, causing loss of control, loose
rotation components will be violently thrown.
q) 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.
r) 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.
s) Do not operate the power tool near
flammable materials. Sparks could ignite these
materials.
t) Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
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ENGLISH
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) 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.
c) Do not attach a saw chain woodcarving
blade or toothed saw blade. Such blades
create frequent kickback and loss of control.
d) Always feed the bit into the material in
the same direction as the cutting edge is
exiting from the material (which is the same
direction as the chips are thrown). Feeding
the tool in the wrong direction causes the
cutting edge of the bit to climb out of the work
and pull the tool in the direction of this feed.
e) When using rotary files, cut off wheels, high-
speed cutters or tungsten carbide cutters,
always have the work securely clamped.
These wheels will grab if they become slightly
canted in the groove, and can kickback. When
a cut-off wheel grabs, the wheel itself usually
breaks. When a rotary file, high speed cutter or
tungsten carbide cutter grabs, it may jump from
the groove and you could lose control of the
tool.
Safety Warnings Specifi c for
Grinders
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) For threaded abrasive cones and plugs
use only undamaged wheel mandrels with
an unrelieved shoulder flange that are of a
correct size and length. Proper mandrels will
reduce the possibility of breakage.
c) Do not position your hand in line with or
behind a rotating wheel. When the wheel,
at the point of operation, is moving away from
your hand, the possible kickback may propel
the wheel and the power tool directly at you.
d) 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 the cut and
the edge of the workpiece on both sides of the
wheel.
Additional Safety Information
• 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.
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.
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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. 1)
The date code (e), which also includes the year of
manufacture, is printed into the housing.
Example:
2014 XX XX
Year of Manufacture
Package Contents
The package contains:
1 die grinder
2 wrenches
1 Instruction manual
1 Exploded drawing
• 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 (fi g. 1)
WARNING: Never modify the power
tool or any part of it. Damage or
personal injury could result.
a. Paddle switch
b. Spindle
c. Collet nut
d. Lock-off lever
e. Date code
f. Small spanner (13 mm)
g. Large spanner (17 mm)
DO NOT use under wet conditions or in presence of
flammable liquids or gases.
This die grinder is a professional power tool.
DO NOT let children come into contact with the
tool. Supervision is required when inexperienced
operators use this tool.
• Young children and the infirm. This appliance
is not intended for use by young children or
infirm persons without supervision.
• 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 power supply
corresponds to the voltage on the rating plate.
Your DEWALT tool is double insulated in
accordance with EN 60745; therefore no
earth wire is required.
WARNING: 127 V units have to
be operated via a fail-safe isolating
transformer with an earth screen
between the primary and secondary
winding.
If the supply cord is damaged, it must be replaced
by a specially prepared cord available through the
DEWALT service organisation.
Mains Plug Replacement
(Middle East and Africa)
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.
INTENDED USE
Your die grinder has been designed for professional
grinding applications. The tool can be used with the
complete range of commercial grinding tools with a
maximum diameter of 38 mm and approved speed
of 25000/min.
Using an Extension Cable
If an extension cable is required, use an approved
extension cable suitable for the power input of this
tool (see Technical Data). The minimum conductor
size is 1.5 mm
2
; the maximum length is 30 m.
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When using a cable reel, always unwind the cable
completely.
ASSEMBLY AND ADJUSTMENTS
WARNING: To reduce the risk of
injury, turn unit off and disconnect
machine from power source before
installing and removing accessories,
before adjusting or changing
set-ups or when making repairs.
Before reconnecting the tool, depress
and release the trigger switch to ensure
that the tool is off. An accidental startup can cause injury.
Install Grinding Wheels (fi g. 1, 2, 4)
WARNING: Accessories must be rated
at least equal to the maximum speed
marked on the tool. Accessories running
faster than their rated speed can break
and fly apart.
WARNING: Accessories must be within
the capacity rating marked on the tool.
Incorrectly sized accessories cannot be
adequately controlled.
WARNING: Do not use accessories
with a mandrel length exceeding 40
mm. Ensure that the exposed mandrel
length is no more than 10 mm after
inserting accessory into collet.
WARNING: Never tighten the collet nut
without an accessory in the collet.
1. Hold the spindle (b) using the 13mm wrench (f)
provided.
2. Loosen the collet nut (c) with the 17mm
wrench(g) by turning it counterclockwise.
3. Insert the shank of the accessory (minimum
20mm) into the collet.
4. Securely tighten the collet nut (c) using the
spanner provided.
NOTE: The shank overhang, amount that sticks
out past the collet nut (c), should not exceed
10mm. Refer to figure 4.
OPERATION
Instructions for Use
WARNING: Always observe the safety
instructions and applicable regulations.
WARNING: To reduce the risk of
injury, turn unit off and disconnect
machine from power source before
installing and removing accessories,
before adjusting or changing
set-ups or when making repairs.
Before reconnecting the tool, depress
and release the trigger switch to ensure
that the tool is off. An accidental startup can cause injury.
WARNING:
• Ensure all materials to be ground or
• Use clamps or a vice to hold
• Secure the workpiece. A workpiece
• Support panels or any oversized
• Always wear regular working gloves
• The gear case becomes very hot
• Apply only a gentle pressure to the
• Avoid overloading. Should the tool
• The best grinding results are achieved
cut are secured in place.
and support the workpiece to a
stable platform. It is important to
clamp and support the workpiece
securely to prevent the movement
of the workpiece and loss of control.
Movement of the workpiece or loss
of control may create a hazard and
cause personal injury.
clamped with clamping devices or in
a vice is held more secure than by
hand.
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.
while operating this tool.
during use.
tool. Do not exert side pressure on the
disc.
become hot, let it run a few minutes
under no load condition.
when setting the machine at an angle
of 90°. 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.
WARNING: Grasp tool firmly with both
hands to maintain control of the tool at
start up and during use and until the
wheel or accessory stops rotating. Make
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