Makita GD0800C User manual

INSTRUCTION MANUAL
Die Grinder
GD0800C
GD0810C
ENGLISH: Original instructions
DOUBLE INSULATION
Read before use.

2ENGLISH
SPECIFICATIONS
Model GD0800C GD0810C
Collet size 8 mm max. 8 mm max.
Max. wheel point size Max. wheel diameter 25 mm 50 mm
Max. mandrel (shank) length 46 mm 46 mm
Rated speed (n) / No load speed (n0)28,000 (min-1)7,000 (min-1)
Overall length 371 mm 371 mm
Net weight 1.7 kg 1.7 kg
Safety class /II
• Due to our continuing program of research and development, the specications herein are subject to change with-
out notice.
• Specications may differ from country to country.
• Weight according to EPTA-Procedure 01/2003
Symbols
The following show the symbols used for the equip-
ment. Be sure that you understand their meaning before
use.
Read instruction manual.
DOUBLE INSULATION
Wear safety glasses.
Only for EU countries
Do not dispose of electric equipment
together with household waste material!
In observance of the European Directive,
on Waste Electric and Electronic
Equipment and its implementation in
accordance with national law, electric
equipment that have reached the end of
their life must be collected separately and
returned to an environmentally compatible
recycling facility.
Intended use
The tool is intended for grinding ferrous materials or
deburring castings.
Power supply
The tool should be connected only to a power supply of
the same voltage as indicated on the nameplate, and
can only be operated on single-phase AC supply. They
are double-insulated and can, therefore, also be used
from sockets without earth wire.
Noise
The typical A-weighted noise level determined accord-
ing to EN60745:
Model GD0800C
Sound pressure level (LpA) : 78 dB(A)
Uncertainty (K) : 3 dB(A)
The noise level under working may exceed 80 dB (A).
Model GD0810C
Sound pressure level (LpA) : 77 dB(A)
Uncertainty (K) : 3 dB(A)
The noise level under working may exceed 80 dB (A).
Wear ear protection
Vibration
The vibration total value (tri-axial vector sum) deter-
mined according to EN60745:
Model GD0800C
Work mode : surface grinding
Vibration emission (ah) : 4.5 m/s2
Uncertainty (K) : 1.5 m/s2
Model GD0810C
Work mode : surface grinding
Vibration emission (ah) : 2.5 m/s2or less
Uncertainty (K) : 1.5 m/s2
NOTE: The declared vibration emission value has
been measured in accordance with the standard test
method and may be used for comparing one tool with
another.
NOTE: The declared vibration emission value may also be
used in a preliminary assessment of exposure.
WARNING: The vibration emission during actual
use of the power tool can differ from the declared
emission value depending on the ways in which the
tool is used.
WARNING: Be sure to identify safety measures
to protect the operator that are based on an estima-
tion of exposure in the actual conditions of use (taking
account of all parts of the operating cycle such as
the times when the tool is switched off and when it is
running idle in addition to the trigger time).
For European countries only
EC Declaration of Conformity
Makita declares that the following Machine(s):
Designation of Machine:
Die Grinder
Model No./ Type: GD0800C,GD0810C
Conforms to the following European Directives:
2006/42/EC
They are manufactured in accordance with the following
standard or standardized documents:
EN60745
The Technical le in accordance with 2006/42/EC is
available from:
Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium

3ENGLISH
28.2.2015
Yasushi Fukaya
Director
Makita, Jan-Baptist Vinkstraat 2, 3070, Belgium
General Power Tool Safety Warnings
WARNING Read all safety warnings and all instruc-
tions. Failure to follow the warnings and instructions may
result in electric shock, re and/or serious injury.
Save all warnings and instruc-
tions for future reference.
The term "power tool" in the warnings refers to your
mains-operated (corded) power tool or battery-operated
(cordless) power tool.
Work area safety
1. Keep work area clean and well lit. Cluttered or
dark areas invite accidents.
2. Do not operate power tools in explosive atmo-
spheres, such as in the presence of ammable
liquids, gases or dust. Power tools create sparks
which may ignite the dust or fumes.
3. Keep children and bystanders away while
operating a power tool. Distractions can cause
you to lose control.
Electrical Safety
4. 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. Unmodied plugs and matching outlets will
reduce risk of electric shock.
5. Avoid body contact with earthed or grounded
surfaces such as pipes, radiators, ranges and
refrigerators. There is an increased risk of elec-
tric shock if your body is earthed or grounded.
6. Do not expose power tools to rain or wet con-
ditions. Water entering a power tool will increase
the risk of electric shock.
7. 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.
8. 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.
9. 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.
10. Use of power supply via a RCD with a rated
residual current of 30mA or less is always
recommended.
Personal Safety
11. 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 inuence of drugs, alcohol or
medication. A moment of inattention while oper-
ating power tools may result in serious personal
injury.
12. 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.
13. 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 nger on the switch or energising power tools
that have the switch on invites accidents.
14. 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.
15. Do not overreach. Keep proper footing and
balance at all times. This enables better control
of the power tool in unexpected situations.
16. Dress properly. Do not wear loose clothing or
jewellery. Keep your hair, clothing, and gloves
away from moving parts. Loose clothes, jewel-
lery or long hair can be caught in moving parts.
17. 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.
Power tool use and care
18. 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.
19. 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.
20. 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 pre-
ventive safety measures reduce the risk of starting
the power tool accidentally.
21. Store idle power tools out of the reach of chil-
dren 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.
22. 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.
23. Keep cutting tools sharp and clean. Properly
maintained cutting tools with sharp cutting edges
are less likely to bind and are easier to control.
24. Use the power tool, accessories and tool bits
etc. in accordance with these instructions, tak-
ing 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.

4ENGLISH
Service
25. Have your power tool serviced by a qualied
repair person using only identical replacement
parts. This will ensure that the safety of the power
tool is maintained.
26. Follow instruction for lubricating and chang-
ing accessories.
27. Keep handles dry, clean and free from oil and
grease.
DIE GRINDER SAFETY WARNINGS
Safety Warnings Common for Grinding Operation:
1.
This power tool is intended to function as a grinder.
Read all safety warnings, instructions, illustrations
and specications provided with this power tool.
Failure to follow all instructions listed below may result
in electric shock, re and/or serious injury.
2. Operations such as sanding, wire brushing, polish-
ing or cutting-off are not recommended to be per-
formed with this power tool. Operations for which the
power tool was not designed may create a hazard and
cause personal injury.
3. Do not use accessories which are not specically
designed and recommended by the tool manufac-
turer. Just because the accessory can be attached to
your power tool, it does not assure safe operation.
4. 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 y apart.
5. 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 controlled.
6. The arbour size of accessories must properly
t the collet of the power tool. 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.
7. Mandrel mounted accessories must be fully
inserted into the collet or chuck. If the mandrel
is insufciently held and/or the overhang of the
wheel is too long, the mounted accessory may
become loose and be ejected at high velocity
8.
Do not use a damaged accessory. Before each use
inspect the accessory such as abrasive wheels
for chips and cracks. If power tool or accessory is
dropped, inspect for damage or install an undam-
aged 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.
9. 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 ying debris generated by various operations .
The dust mask or respirator must be capable of ltrating
particles generated by your operation. Prolonged expo-
sure to high intensity noise may cause hearing loss.
10. Keep bystanders a safe distance away from work
area. Anyone entering the work area must wear per-
sonal protective equipment. Fragments of workpiece
or of a broken accessory may y away and cause injury
beyond immediate area of operation.
11. 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.
12. Always hold the tool rmly in your hand(s) during
the start-up. The reaction torque of the motor, as it
accelerates to full speed, can cause the tool to twist.
13. Use clamps to support workpiece whenever practi-
cal. Never hold a small workpiece in one hand and
the tool in the other hand 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.
14. Position the cord clear of the spinning acces-
sory. If you lose control, the cord may be cut or
snagged and your hand or arm may be pulled into
the spinning accessory.
15. Never lay the power tool down until the acces-
sory has come to a complete stop. The spinning
accessory may grab the surface and pull the
power tool out of your control.
16.
After changing the bits or making any adjustments,
make sure the collet nut, chuck or any other adjust-
ment devices are securely tightened. Loose adjustment
devices can unexpectedly shift, causing loss of control,
loose rotating components will be violently thrown.
17. 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.
18. 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.
19. Do not operate the power tool near ammable
materials. Sparks could ignite these materials.
20. Do not use accessories that require liquid
coolants. Using water or other liquid coolants
may result in electrocution or shock.
Kickback and Related Warnings
Kickback is a sudden reaction to a pinched or snagged
rotating 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.
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 power tool misuse and/or
incorrect operating procedures or conditions and can be
avoided by taking proper precautions as given below.
a) Maintain a rm grip on the power tool and
position your body and arm to allow you to
resist kickback forces. The operator can control
kickback forces, if proper precautions are taken.

5ENGLISH
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 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.
Safety Warnings Specic for Grinding:
a) Use only wheel types that are recommended
for your power tool and only for recommended
applications.
b) Do not position your hand in line with and
behind the rotating wheel. When the wheel, at
the point of operation, is moving away from your
hand, the possible kickback may propel the spin-
ning wheel and the power tool directly at you.
Additional safety warnings:
21.
The tool is intended for use with bonded abra-
sive wheel points (grinding stones) permanently
mounted on plain, unthreaded mandrel (shanks).
22. Make sure the wheel is not contacting the
workpiece before the switch is turned on.
23. Before using the tool on an actual workpiece,
let it run for a while. Watch for vibration or
wobbling that could indicate poor installation
or a poorly balanced wheel.
24. Use the specied surface of the wheel to per-
form the grinding.
25. Watch out for ying sparks. Hold the tool so
that sparks y away from you and other per-
sons or ammable materials.
26. Do not leave the tool running. Operate the tool
only when hand-held.
27. Do not touch the workpiece immediately after
operation; it may be extremely hot and could
burn your skin.
28. Observe the instructions of the manufacturer
for correct mounting and use of wheels.
Handle and store wheels with care.
29.
Check that the workpiece is properly supported.
30. If working place is extremely hot and humid, or
badly polluted by conductive dust, use a short-cir-
cuit breaker (30 mA) to assure operator safety.
31. Do not use the tool on any materials contain-
ing asbestos.
32.
Always be sure you have a rm footing. Be sure no
one is below when using the tool in high locations.
SAVE THESE INSTRUCTIONS.
WARNING: DO NOT let comfort or famil-
iarity with product (gained from repeated
use) replace strict adherence to safety
rules for the subject product. MISUSE or
failure to follow the safety rules stated in
this instruction manual may cause serious
personal injury.
FUNCTIONAL
DESCRIPTION
CAUTION:
• Always be sure that the tool is switched off and
unplugged before adjusting or checking function
on the tool.
Switch action
1
► 1. Slide switch
CAUTION:
•
Before plugging in the tool, always check to see that the
slide switch actuates properly and returns to the "OFF"
position when the rear of the slide switch is depressed.
To start the tool, slide the slide switch toward the "I
(ON)" position. For continuous operation, press the
front of the slide switch to lock it.
To stop the tool, press the rear of the slide switch, then
slide it toward the "O (OFF)" position.
Speed adjusting dial
2
1
► 1. Speed adjusting dial
The tool speed can be changed by turning the speed adjusting
dial to a given number setting from 1 to 5.
Higher speed is obtained when the dial is turned in the
direction of number 5. And lower speed is obtained when it is
turned in the direction of number 1.
Refer to the table for the relationship between the number
settings on the dial and the approximate tool speed.

6ENGLISH
GD0800C GD0810C
Number min
-1
(RPM)
1-2 7,000 - 10,000 1,800 - 2,400
2-3 10,000 - 17,000 2,400 - 4,100
3-4 17,000 - 24,000 4,100 - 5,800
4-5 24,000 - 28,000 5,800 - 7,000
min
-1
(RPM)
CAUTION:
• If the tool is operated continuously at low
speeds for a long time, the motor will get over-
loaded, resulting in tool malfunction.
•
The speed adjusting dial can be turned only as far
as 5 and back to 1. Do not force it past 5 or 1, or the
speed adjusting function may no longer work.
ASSEMBLY
CAUTION:
• Always be sure that the tool is switched off and
unplugged before carrying out any work on the
tool.
Installing the side handle
Always use the side handle to ensure operating safety.
1
► 1. Side handle
Install the side handle on the tool barrel, then tighten
the handle by turning clockwise at the desired position.
Installing or removing wheel point
12
3
► 1. Wrench 19 2. Wrench 13 3. Collet nut
Loosen the collet nut and insert the wheel point into the
collet nut. Use the smaller wrench to hold the spindle
and the larger one to tighten the collet nut securely.
The wheel point should not be mounted more than 10
mm from the collet nut. Exceeding this distance could
cause vibration or a broken shaft.
To remove the wheel point, follow the installation proce-
dure in reverse.
10 mm (3/8") MAX.
CAUTION:
• Use the correct size collet cone for the wheel
point which you intend to use.
OPERATION
Turn the tool on without the wheel point making any
contact with the workpiece and wait until the wheel point
attains full speed. Then apply the wheel point to the
workpiece gently. To obtain a good nish, move the tool
in the leftward direction slowly.
CAUTION:
• Apply light pressure on the tool. Excessive
pressure on the tool will only cause a poor nish
and overloading of the motor.

7ENGLISH
MAINTENANCE
CAUTION:
• Always be sure that the tool is switched off and
unplugged before attempting to perform inspec-
tion or maintenance.
• Never use gasoline, benzine, thinner, alcohol
or the like. Discoloration, deformation or cracks
may result.
To maintain product SAFETY and RELIABILITY,
repairs, carbon brush inspection and replacement, any
other maintenance or adjustment should be performed
by Makita Authorized Service Centers, always using
Makita replacement parts.
OPTIONAL
ACCESSORIES
CAUTION:
• These accessories or attachments are recom-
mended for use with your Makita tool specied
in this manual. The use of any other accessories
or attachments might present a risk of injury to
persons. Only use accessory or attachment for
its stated purpose.
If you need any assistance for more details regard-
ing these accessories, ask your local Makita Service
Center.
• Wheel points
• Collet cone set (3 mm, 6 mm, 1/4", 1/8")
• Vise holder
• Wrench 13
• Wrench 19
• Side handle set
NOTE:
• Some items in the list may be included in the
tool package as standard accessories. They
may differ from country to country.

www.makita.com
Makita Europe N.V.
Makita Corporation 3-11-8, Sumiyoshi-cho,
Anjo, Aichi 446-8502 Japan
Jan-Baptist Vinkstraat 2,
3070 Kortenberg, Belgium
884314J229
EN
20160602