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Cordless Rotary Tool
Owner’s Manual Models 750 & 770
HONESTLY NOW … Have you read this OWNER’S MANUAL?
•
Safety
• Assembly
•
Operation
•
Accessory Information
•
Warranty
• Registration Form
• Service Parts
2 610 917 153 9/02 PRINTED IN U.S.A.
P.O. Box 1468
Racine, Wisconsin 53401
1-800-437-3635
http://www.dremel.com
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Voir page 21
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Page 2
General Safety Rules for All Battery Operated Tools
Read and understand all instructions. Failure to follow all instructions listed below, may result
in electric shock, fire and/or serious personal injury.
SAVE THESE INSTRUCTIONS
!
WARNING
Work Area
Keep your work area clean and well lit. Cluttered
benches and dark areas invite accidents.
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.
Keep bystanders, children, and visitors away while
operating a power tool. Distractions can cause you to
lose control.
Electrical Safety
Do not abuse the cord. Never use the cord to carry the
tool. Keep cord away from heat, oil, sharp edges, or
moving parts. Replace damaged cords immediately.
Damaged cords may create a fire.
A battery operated tool with integral batteries or a
separate battery pack must be recharged only with
the specified charger for the battery. A charger that
may be suitable for one type of battery may create a risk
of fire when used with another battery.
Use battery operated tool only with specifically designated battery pack. Use of any other batteries may
create a risk of fire.
Personal Safety
Stay alert, watch what you are doing, and use common sense when operating a power tool. Do not use
tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while
operating power tools may result in serious personal
injury.
Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep your hair, clothing, and
gloves away from moving parts. Loose clothes, jewel-
ry, or long hair can be caught in moving parts.
Avoid accidental starting. Be sure switch is in the
locked or off position before inserting battery pack.
Carrying tools with your finger on the switch or inserting the battery pack into a tool with the switch on invites
accidents.
Remove adjusting keys or wrenches before turning
the tool on. A wrench or a key that is left attached to a
rotating part of the tool may result in personal injury.
Do not overreach. Keep proper footing and balance at
all times. Proper footing and balance enable better
control of the tool in unexpected situations.
Use safety equipment. Always wear eye protection.
Dust mask, non-skid safety shoes, hard hat, or hearing
protection must be used for appropriate conditions.
Tool Use and Care
Use clamps or other practical way 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.
Do not force tool. Use the correct tool for your application. The correct tool will do the job better and safer
at the rate for which it is designed.
Do not use tool if switch does not turn it on or off. A
tool that cannot be controlled with the switch is dangerous and must be repaired.
Disconnect battery pack from tool or place the switch
in the locked or off position before making any adjustments, changing accessories, or storing the tool.
Such preventive safety measures reduce the risk of
starting the tool accidentally.
Store idle tools out of reach of children and other
untrained persons. Tools are dangerous in the hands of
untrained users.
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 that can
make a connection from one terminal to another.
Page 3
Page 3
Safety Rules for Cordless Rotary Tools
Shorting the battery terminals together may cause
sparks, burns, or a fire.
Maintain tools with care. Keep cutting tools sharp and
clean. Properly maintained tools with sharp cutting
edge are less likely to bind and are easier to control.
Check for misalignment or binding of moving parts,
breakage of parts, and any other condition that may
affect the tool's operation. If damaged, have the tool
serviced before using. Many accidents are caused by
poorly maintained tools.
Use only accessories that are recommended by the
manufacturer for your model. Accessories that may be
suitable for one tool may create a risk of injury when
used on another tool.
Service
Tool service must be performed only by qualified
repair personnel. Service or maintenance performed
by unqualified personnel may result in a risk of injury.
When servicing a tool, use only identical replacement
parts. Follow instructions in the Maintenance section
of this manual. Use of unauthorized parts or failure to
follow Maintenance Instructions may create a risk of
shock or injury.
Accessories must be rated for at least the speed recommended on the tool warning label. Wheels and
other accessories running over rated speed can fly apart
and cause injury.
Hold tool by insulated gripping surfaces when performing an operation where the cutting tool may contact hidden wiring or its own cord. Contact with a "live"
wire will make exposed metal parts of the tool "live" and
shock the operator. If cutting into existing walls or other
blind areas where electrical wiring may exist is unavoidable, disconnect all fuses or circuit breakers feeding this
worksite.
Before changing accessories remove battery pack.
Accidental starting may occur because battery tools
with a battery inserted are in the operative condition.
Be aware of the switch location, when placing the tool
down or when picking the tool up. You may acciden-
tally activate the switch.
Always hold the tool with two hands during start-up.
The reaction torque of the motor can cause the tool to
twist.
Always wear safety goggles and dust mask. Use only
in well ventilated area. Using personal safety devices
and working in safe environment reduces risk of injury.
After changing the bits or making any adjustments,
make sure the collet nut and any other adjustment
devices are securely tightened. Loose adjustment
device can unexpectedly shift, causing loss of control,
loose rotating components will be violently thrown.
Do not reach in the area of the spinning bit. The proximity of the spinning bit to your hand may not always be
obvious.
Allow brushes to run at operating speed for at least
one minute before using wheel. During this time no
one is to stand in front or in line with the brush. Loose
bristles or wires will be discharged during the run-in
time.
Wire and bristle brushes must never be operated at
speeds greater than 15,000/min. Direct the discharge
of the spinning wire brush away from you. Small par-
ticles and tiny wire fragments may be discharged at
high velocity during the “cleaning” action with these
brushes and may become imbedded in your skin.
Bristles or wires will be discharged from the brush at
high speeds.
"Wear protective gloves and face shield with wire or
bristle brushes. Apply wire or bristle brushes lightly
to the work as only the tips of the wire/bristles do the
work. “Heavy” pressure on bristles will cause the wire
or bristle to become overstressed, resulting in a wiping
action and will cause the bristles/wire to be discharged."
Carefully handle both the tool and individual grinding
wheels to avoid chipping or cracking. Install a new
wheel if tool is dropped while grinding. Do not use a
wheel that may be damaged. Fragments from a wheel
that bursts during operation will fly away at great velocity possibly striking you or bystanders.
Never use dull or damaged bits. Sharp bits must be
handled with care. Damaged bits can snap during use.
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Page 4
Dull bits require more force to push the tool, possibly
causing the bit to break.
Use clamps to support workpiece whenever practical.
Never hold a small workpiece in one hand and the
tool in the other hand while in use. Allow for sufficient
space, at least 6", between your hand and the spinning bit. Round material such as dowel rods, pipes or
tubing have a tendency to roll while being cut, and may
cause the bit to “bite” or jump toward you. Clamping a
small workpiece allows you to use both hands to control the tool.
Inspect your workpiece before cutting. When cutting
irregularly shaped workpieces, plan your work so it
will not slip and pinch the bit and be torn from your
hand. For example, if carving wood, make sure there
are no nails or foreign objects in the workpiece. Nails or
foreign objects can cause the bit to jump.
Never start the tool when the bit is engaged in the
material. The bit cutting edge may grab the material
causing loss of control of the cutter.
Avoid bouncing and snagging the wheel, especially
when working corners, sharp edges etc. This can
cause loss of control and kick-back.
The direction of feed with the bit into the material
when carving, routing or cutting is very important.
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, caus-
es the cutting edge of the bit to climb out of the work
and pull the tool in the direction of this feed.
If the workpiece or bit becomes jammed or bogged
down, turn the tool “OFF” by the switch. Wait for all
moving parts to stop and unplug the tool, then work to
free the jammed material. If the switch to the tool is
left “ON” the tool could restart unexpectedly causing
serious personal injury.
Do not leave a running tool unattended, turn power
off. Only when tool comes to a complete stop it is safe
to put it down.
Do not grind or sand near flammable materials.
Sparks from the wheel could ignite these materials.
Do not touch the bit or collet after use. After use the bit
and collet are too hot to be touched by bare hands.
Regularly clean the tool's air vents by compressed
air. Excessive accumulation of powdered metal inside
the motor housing may cause electrical failures.
Do not allow familiarity gained from frequent use of
your rotary tool to become commonplace. Always
remember that a careless fraction of a second is sufficient to inflict severe injury.
Do not alter or misuse tool. Any alteration or modification is a misuse and may result in serious personal
injury.
This product is not intended for use as a dental drill,
in human or veterinary medical applications.
Serious injury may result.
When using the steel saws, cutoff wheels, high speed
cutters or tungsten carbide cutters, always have the
work securely clamped. Never attempt to hold the
work with one hand while using any of these accessories. The reason is that these wheels will grab if they
become slightly canted in the groove, and can kickback
causing loss of control resulting in serious injury. Your
second hand should be used to steady and guide the
hand holding the tool. When a cutoff wheel grabs, the
wheel itself usually breaks. When the steel saw, high
speed cutters or tungsten carbide cutter grab, it may
jump from the groove and you could lose control of the
tool.
Some dust created by power
sanding, sawing, grinding,
drilling, and other construction activities contains
chemicals known to cause cancer, birth defects or
other reproductive harm. Some examples of these
chemicals are:
• Lead from lead-based paints,
• Crystalline silica from bricks and cement and other
masonry products, and
• Arsenic and chromium from chemically-
treated lumber.
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
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Page 5
Before using battery charger, read all instructions and
cautionary markings on (1) battery charger, (2) battery pack, and (3) product using battery.
Use only the charger which accompanied your
product or direct replacement as listed in the
catalog or this manual. Do not substitute any other
charger. Use only Dremel battery charger Nos. 756-01
& 758-01 with your product.
Do not disassemble charger or operate the charger if
it has received a sharp blow, been dropped or otherwise damaged in any way. Replace damaged cord or
plugs immediately. Incorrect reassembly or damage
may result in electric shock or fire.
Do not recharge battery in damp or wet environment.
Do not expose charger to rain or snow. If battery case
is cracked or otherwise damaged, do not insert into
charger. Battery short or fire may result.
Charge only Dremel Nos. 755-01 & 757-01 rechargeable batteries with the above listed chargers. Other
types of batteries may burst causing personal injury and
damage.
Charge battery pack in temperatures above +40
degrees F (4 degrees C) and below +105 degrees F
(41 degrees C). Store tool and battery pack in locations where temperatures will not exceed 120
degrees F (49 degrees C). This is important to prevent
serious damage to the battery cells.
Battery leakage may occur under extreme usage or
temperature conditions. Avoid contact with skin and
eyes. The battery liquid is caustic and could cause
chemical burns to tissues. If liquid comes in contact
with skin, wash quickly with soap and water, then with
lemon juice or vinegar. If the liquid contacts your eyes,
flush them with water for a minimum of 10 minutes and
seek medical attention.
Use of an attachment not recommended or sold by
Dremel may result in a risk of fire, electric shock or
injury to persons.
Battery Care
When batteries are not in tool or
charger, keep them away from
metal objects. For example, to protect terminals from
shorting DO NOT place batteries in a tool box or pocket
with nails, screws, keys, etc. Fire or injury may result.
DO NOT PUT BATTERIES INTO FIRE OR EXPOSE TO
HIGH HEAT. They may explode.
Battery Disposal
Do not attempt to disassemble
the battery or remove any com-
ponent projecting from the battery terminals. Fire or
injury may result. Prior to disposal, protect exposed terminals with heavy insulating tape to prevent shorting.
Nickel-Cadmium Batteries
If equipped with a nickel-cadmium battery, the battery
must be collected, recycled or disposed of in an
environmentally sound manner.
“The EPA certified RBRC Battery
Recycling Seal on the nickel-cadmium (Ni-Cd) battery indicates S-B
Power Tool Company is voluntarily
participating in an industry pro-
gram to collect and recycle these
batteries at the end of their useful life, when taken out
of service in the United States or Canada. The RBRC
program provides a convenient alterative to placing
used Ni-Cd batteries into the trash or the municipal
waste stream, which may be illegal in your area.
Please call 1-800-8-BATTERY for information on Ni-Cd
battery recycling and disposal bans/restrictions in
your area, or return your batteries to a
Skil/Bosch/Dremel Service Center for recycling. S-B
Power Tool Company’s involvement in this program is
part of our commitment to preserving our environment and conserving our natural resources.”
Nickel-Metal Hydride Batteries
If equipped with a nickel-metal hydride battery, the battery can be disposed of in a municipal solid waste
stream.
!
WARNING
!
WARNING
Battery/Charger
Page 6
Page 6
IMPORTANT: Some of the following symbols may be used on your tool. Please study them and learn their
meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.
Symbol Name Designation/Explanation
V Volts Voltage (potential)
A Amperes Current
Hz Hertz Frequency (cycles per second)
W Watt Power
kg Kilograms Weight
min Minutes Time
s Seconds Time
Diameter Size of drill bits, grinding wheels, etc.
n
0
No load speed Rotational speed, at no load
.../min Revolutions or reciprocation per minute Revolutions, strokes, surface speed,
orbits etc. per minute
0 Off position Zero speed, zero torque...
1, 2, 3, ... Selector settings Speed, torque or position settings.
I, II, III, Higher number means greater speed
Infinitely variable selector with off Speed is increasing from 0 setting
Arrow Action in the direction of arrow
Alternating current Type or a characteristic of current
Direct current Type or a characteristic of current
Alternating or direct current Type or a characteristic of current
Class II construction Designates Double Insulated Construction tools.
Earthing terminal Grounding terminal
Warning symbol Alerts user to warning messages
Ni-Cad RBRC seal Designates Ni-Cad battery recycling program
Symbols
0
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Page 7
Symbols
IMPORTANT: Some of the following symbols may be used on your tool. Please study them and learn their
meaning. Proper interpretation of these symbols will allow you to operate the tool better and safer.
This symbol designates
that this tool is listed by
Underwriters Laboratories.
This symbol designates that
this tool is listed by the
Canadian Standards
Association.
This symbol designates that this
tool is listed to Canadian
Standards by Underwriters
Laboratories.
This symbol
designates that
this tool
complies
to NOM
Mexican
Standards.
This symbol designates that this
tool is listed by Underwriters
Laboratories, and listed to
Canadian Standards by
Underwriters Laboratories.
Page 8
Page 8
RELEASE TAB
CHARGER
BATTERY
PACK
BATTERY
PACK
RELEASE
TAB
COLLET NUT
SWITCH
Functional Description & Specifications
Disconnect battery pack from tool or place the switch in the locked or off position before
making any assembly, adjustments or changing accessories. Such preventive safety
measures reduce the risk of starting the tool accidentally.
!
WARNING
Cordless Rotary Tool
Rotary Tools
Model number 750 770
Voltage rating 4.8 V 7.2 V
No load speed no6,500-13,000/min no10,000-20,000/min
Collet Capacities 1/32”, 1/16”, 3/32”, 1/8”
Chargers
Model number 756-01 758-01
Voltage rating 120 V 60 Hz
Amperage rating 200 mA 200 mA
Charge time 3 Hr. 3 Hr.
Page 9
Page 9
Assembly
ALWAYS BE SURE THE TOOL IS IN
THE “0” POSITION BEFORE
CHANGING ACCESSORIES, CHANGING COLLETS OR
SERVICING YOUR CORDLESS ROTARY TOOL.
WARNING
!
SHAFT
LOCK
BUTTON
TO LOOSEN
TO TIGHTEN
COLLET
NUT
COLLET
COLLET
NUT
IDENTIFICATION
RINGS
480 1/8"
COLLET
481 3/32"
COLLET
482 1/16"
COLLET
483 1/32"
COLLET
COLLET NUT— To loosen, first press shaft lock button
and rotate the collet nut by hand until the lock engages
the shaft preventing further rotation.
Do not engage lock while the Tool
is running.
With the shaft lock engaged, loosen the collet nut by
hand. Change accessories by inserting the new one
into the collet as far as possible to minimize runout and
unbalance. With the shaft lock engaged, finger tighten
the collet nut until the accessory shank is gripped by
the collet. Avoid excessive tightening of the collet
nut when there is no bit inserted.
COLLETS — Four different size collets (see illus-
tration), to accommodate different shank sizes, are
available for your Cordless Rotary Tool. To install a different collet, remove the collet nut and remove the old
collet. Insert the unslotted end of the collet in the hole
in the end of the tool shaft. Replace collet nut on the
shaft. Always use the collet which matches the shank
size of the accessory you plan to use. Never force a
larger diameter shank into a collet.
BALANCING ACCESSORIES — For precision work, it is
important that all accessories be in good balance
(much the same as the tires on your automobile). To
true up or balance an accessory, slightly loosen collet
nut and give the accessory or collet a 1/4 turn. Retighten collet nut and run the Tool. You should be able
to tell by the sound and feel if your accessory is running in balance. Continue adjusting in this fashion until
best balance is achieved. To maintain balance on abrasive wheel points, before each use, with the wheel point
secured in the collet, turn on the Cordless Rotary Tool
and run the 415 Dressing Stone lightly against the
revolving wheel point. This removes high spots and
trues up the wheel point for good balance.
Remember, your new Dremel Cordless Rotary Tool is
the finest power tool of its kind. But its performance
is only as good as the accessories with which it is
used. We recommend only Dremel accessories be
used. Use of any other accessories may create a hazard. We hope you’ll enjoy many years of trouble free
pleasure from your Dremel Cordless Rotary Tool.
COLLET IDENTIFICATION CHART — Collet sizes can
be identified by the rings on the back end of collet.
1/32" Collet has one (1) ring.
1/16" Collet has two (2) rings.
3/32" Collet has three (3) rings.
1/8" Collet has no rings.
(1/8" Collet is included with your tool)
!
CAUTION
Page 10
Page 10
Read the next sections carefully. They will help you use
your Cordless Rotary Tool correctly and help you select
the correct accessory for your job.
Charging the Tool
The Cordless Rotary Tool is not fully charged. The tool
is equipped with a removable battery pack. Be sure to
charge pack prior to initial use. For best results on first
charge, charge pack overnight.
To charge the tool:
1. Put the switch in the “OFF” position.
2. Squeeze release tabs on both sides of battery pack,
and remove pack from back of tool as shown on page 8.
3. Align exterior shape of battery pack with exterior
shape of charger, squeeze release tabs, insert battery
pack into charger as shown and release pressure on
tabs so it locks in place.
4. Plug charger into the power source. The green L.E.D.
light indicates connection has been made and the
battery pack is charging. The LED light will remain lit
even after charging is complete. Under normal usage
the tool normally requires 3 hours charging time to
reach full capacity.
5. When charging is completed, squeeze release tabs on
battery pack and remove pack from charger.
6. Align exterior shape of battery pack with exterior
shape of the housing of tool as shown. Squeeze release
tabs, insert battery pack into back of tool, and release
pressure on tabs so it locks in place.
Important Charging Notes
If you anticipate long periods of non-use for your tool
it's best to unplug your charger and battery pack from
its power source. Unplugging the charger will extend
the life expectancy of the charger and battery pack.
The battery pack accepts only about 80% of its maximum charge capacity with its first charge; or, after prolonged storage it will also require additional time on the
first charge. However, after several charge and discharge cycles, the batteries should be up to full charge
capacity and delivering maximum performance.
Operation Instructions
Introduction
The Cordless Rotary Tool is a handful of high-speed
power. It serves as a carver, a grinder, polisher, sander,
cutter, power brush, drill and more.
Your Cordless Rotary Tool has a small, powerful electric
motor, is comfortable in the hand, and is made to accept
a large variety of accessories including abrasive wheels,
drill bits, wire brushes, polishers, engraving cutters,
router bits, and cutting wheels. Accessories come in a
variety of shapes and permit you to do a number of
different jobs. As you become familiar with the range of
accessories and their uses, you will learn just how
versatile your Cordless Rotary Tool is. You’ll see dozens
of uses you hadn’t thought of before now.
The real secret of the Cordless Rotary Tool is its speed.
To understand the advantages of its high speed, you
have to know that the standard portable electric drill
runs at speeds up to 2,800 revolutions per minute. The
typical electric drill is a low-speed, high torque tool; the
Cordless Rotary Tool is just the opposite — a highspeed, low torque tool. The chief difference to the user
is that in the high speed tools, the speed combined with
the accessory mounted in the collet does the work. You
don’t apply pressure to the tool, but simply hold and
guide it. In the low speed tools, you not only guide the
tool, but also apply pressure to it, as you do, for example,
when drilling a hole.
It is this high speed, along with its compact size and
wide variety of special accessories, that makes your
Cordless Rotary Tool different from other power tools.
The speed enables it to do jobs low speed tools cannot
do, such as cutting hardened steel, engraving glass, etc.
Getting the most out of your Cordless Rotary Tool is a
matter of learning how to let this speed work for you.
Page 11
Page 11
Using the Cordless Rotary Tool
The first step in learning to use the Cordless Rotary Tool
is to get the “feel” of it. Hold it in your hand and feel its
weight and balance. Feel the taper of the housing. This
taper permits the tool to be grasped much like a pen or
pencil.
When you turn on the tool for the first time, hold it away
from your face. Accessories can be damaged during
handling, and can fly apart as they come up to speed.
This is not common, but it does happen.
Practice on scrap materials first to see how the Cordless
Rotary Tool cuts. Keep in mind that the work is done by
the speed of the tool and by the accessory in the collet.
You should not lean on or push the tool into the work.
Instead, lower the spinning accessory lightly to the
work and allow it to touch the point at which you want
cutting (or sanding or etching, etc.) to begin. Concentrate on guiding the tool over the work using very little pressure from your hand. Allow the accessory to do
the work.
Usually, it is best to make a series of passes with the
tool rather than attempt to do all the work in one pass.
To make a cut, for example, pass the tool back and forth
over the work, much as you would a small paint brush.
Cut a little material on each pass until you reach the
desired depth. For most work, the deft, gentle touch is
best. With it, you have the best control, are less likely to
make errors, and will get the most efficient work out of
the accessory.
For best control in close work, grip the Rotary Tool
like a pencil between your thumb and forefinger.
The “handgrip” method of holding the tool is used for
operations such as grinding a flat surface or using
cutoff wheels.
WARNING
Wear Eye Protection
Page 12
Page 12
Operating Speeds For Accessories
Set the speed indicator to fit the job to achieve the
best job results when working with different
materials.
To select the right speed for each job, use a practice
piece of material. Vary speed to find the best speed
for the accessory you are using and the job to be
done.
On the Model 750, there is a LO and HI switch. When
the switch indicator is in position 1 or LO, the tool runs
at about 6,500 RPM. When the switch indicator is in
position 2 or HI, the tool runs at about 13,000 RPM.
On the Model 770, there is a LO and HI switch. When
the switch indicator is in position 1 or LO, the tool runs
at about 10,000 RPM. When the switch indicator is in
position 2 or HI, the tool runs at about 20,000 RPM.
You can refer to the charts on pages 13 and 14 to
determine the proper speed, based on the material
being worked and the type of cutter or other accessory
being used. These charts enable you to select both the
correct accessory and the optimum speed at a glance.
Needs for Slower Speeds
Certain materials, however, (some plastics, for example) require a relatively slow speed because at high
speed the friction of the tool generates heat and causes the plastic to melt.
Most work is done at high speed on your Cordless
Rotary Tool. Lower speeds are needed only for certain
tasks.
The speed of Models 750 & 770 is controlled by
setting this indicator on the housing.
The Cordless Rotary Tool model 770 can be used with
some Dremel attachments that screw onto the nose of
the tool.
Model 770 can be used with the 568 Grout Removal
attachment, 675 Lawnmower and Garden Tool
Sharpener, and the 1453 Chainsaw Sharpener attachment.
Use of other Dremel attachments not listed is not recommended. Dremel attachments cannot be used with
the cordless tool model 750.
Using the Cordless Rotary Tool Model 770 with Attachments
Page 13
Page 13
SPEED SETTINGS
Speed for plastic depends on thickness of material or amount of material to be removed.
CATALOG
NUMBER
SOFT
WOOD
HARD
WOOD
LAMINATES
PLASTIC
STEEL
ALUMINUM,
BRASS, ETC.
SHELL/
STONE
CERAMIC GLASS
100, 114, 115, 116, 117,
118, 121, 124, 125, 131,
134, 141, 144, 178, 189,
190, 191, 192, 193, 194,
196, 197, 198, 199
22222
22222
22222
11111
SMALL ENGRAVING CUTTERS
105, 106, 107, 108, 109,
110, 111, 112, 113
2
2
2
2
2
2
2
2
1
1
HIGH SPEED CUTTERS
RUBBER POLISHING POINT
CUTTING ACCESSORIES — SEE WARNING PAGE 4
425, 427
2
DIAMOND WHEEL POINTS
7103, 7105, 7117,
7120, 7122, 7123,
7134, 7144
222
222
222
222
409, 420, 426, 540
542
545
561
222
222
2
2
1
1
1
2
2
2
2
2
ALUMINUM OXIDE GRINDING STONES
903, 911, 921, 932, 941,
945, 952, 953, 954, 971,
997, 8153, 8175, 8193,
8215
541
22 2 1
2
2
2
2
21
2
2
Page 14
Page 14
SPEED SETTINGS
Speed for plastic depends on thickness of material or amount of material to be removed.
CATALOG
NUMBER
SOFT
WOOD
HARD
WOOD
LAMINATES
PLASTIC
STEEL
ALUMINUM,
BRASS, ETC.
SHELL/
STONE
CERAMIC GLASS
83142, 83322, 83702,
84922, 85422, 85602,
85622
2
2
2
1
SILICON CARBIDE GRINDING STONES
TUNGSTEN CARBIDE CUTTERS
9901, 9902,
9903, 9904,
9905, 9906, 9912
9909, 9910, 9911
2
2
2
2
1
1
2
2
2
2
430, 431, 438
439, 440, 444
407, 408, 432
411, 412, 413
502, 503, 504, 505 2 2 221
1-2
1-2
1-2
1-2
1-2
1-2
222
1
SANDING BANDS AND DISCS
GROUT REMOVAL BITS
150 221
DRILL BIT
511 222
FINISHING ABRASIVE BUFFS
1-2
1-2
1-2
2
1-2
1-2
1-2
2
1-2
1-2
1-2
1
222
Use only Dremel Tested, High Performance Accessories.
1
2
569, 570
2
FLAPWHEELS
For Use on Wall and Floor Grout
2
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Service
NO USER SERVICEABLE PARTS
INSIDE. Preventive maintenance
performed by unauthorized personnel may result in
misplacing of internal wires and components which
could cause serious hazard. We recommend that all
tool service be performed by a Dremel Service Facility.
SERVICEMEN: Disconnect tool and/or charger from
power source before servicing.
D.C. motors
The motor in your tool has been engineered for many
hours of dependable service. To maintain peak efficiency of the motor, we recommend it be examined every
six months. Only a genuine Dremel replacement motor
specially designed for your tool should be used.
Cleaning
To avoid accidents, always dis-
connect the tool and/or charger
from the power supply before cleaning. The tool may
be cleaned most effectively with compressed dry air.
Always wear safety goggles when cleaning tools with
compressed air.
Ventilation openings and switch levers must be kept
clean and free of foreign matter. Do not attempt to clean
by inserting pointed objects through opening.
Certain cleaning agents and solvents damage plastic parts. Some
of these are: gasoline, carbon tetrachloride, chlorinated
cleaning solvents, ammonia and household detergents
that contain ammonia.
Extension Cords
If an extension cord is necessary,
a cord with adequate size conductors that is capable of carrying the current necessary
for your tool must be used. This will prevent excessive
voltage drop, loss of power or overheating. Grounded
tools must use 3-wire extension cords that have 3prong plugs and receptacles.
RECOMMENDED SIZES OF EXTENSION CORDS
120 VOLT ALTERNATING CURRENT TOOLS
NOTE: The smaller the gauge number, the heavier the
cord.
!
WARNING
!
WARNING
!
CAUTION
Maintenance
Tool’s
Ampere
Rating
Cord Size in A.W.G.
Wire Sizes in mm
2
3-6
6-8
8-10
10-12
12-16
18 16 16 14 .75 .75 1.5 2.5
18 16 14 12 .75 1.0 2.5 4.0
18 16 14 12 .75 1.0 2.5 4.0
16 16 14 12 1.0 2.5 4.0 —
14 12 — — — — — —
25 50 100 150 15 30 60 120
Cord Length in Feet Cord Length in Meters
!
WARNING
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Page 16
The number and variety of accessories for the Rotary
Tool are almost limitless. There is a category suited to
almost any job you might have to do — and a variety of
sizes and shapes within each category which enables
you to get the perfect accessory for every need.
Refer to the DREMEL ORDER FORM for the accessories available. These accessories may be found at
your local hardware, hobby or home center dealers.
Collets
If you expect to use a variety of accessories, we recommend that in the beginning you purchase a complete
set of four collets. Store these so that you will have the
proper size of collet for any accessory or drill bit you
want to use. Currently, the 1/8", 3/32", 1/32" and 1/16"
collets accommodate all of the available Dremel
accessories.
Mandrels
A mandrel is a shank with a threaded or screw head,
which are required when you use polishing accessories, cutting wheels, sanding discs, and polishing
points. The reason mandrels are used is that sanding
discs, cutting wheels and similar accessories must be
replaced frequently. The mandrel is a permanent
shank, allowing you to replace only the worn head
when necessary, thus saving the expense of replacing
the shaft each time.
Screw Mandrel No. 401
This is a screw mandrel used with the felt polishing tip
and felt polishing wheels.
Small Screw Mandrel No. 402
This is a mandrel with a small screw at its tip, and is
used with emery cutting wheels, sanding discs and
polishing wheels.
Threaded Tip Mandrel No. 424
This is a mandrel with a threaded tip which threads into
the polishing point accessory No. 427.
Tungsten Carbide Cutters
These are tough, long-lived cutters for use on hardened steel, fired ceramics and other very hard materials. They can be used for engraving on tools and
garden equipment.
Engraving Cutters
This group has a wide variety of sizes and shapes, and
are made for intricate work on ceramics (greenware),
wood carvings, jewelry and scrimshaw. They often are
used in making complicated printed circuit boards.
They should not be used on steel and other very hard
materials but are excellent on wood, plastic and soft
metals. Needs 3/32" collet.
Structured Tooth
Tungsten Carbide Cutters
Fast cutting, needle-sharp teeth for greater material
removal with minimum loading. Use on fiberglass,
wood, plastic, epoxy and rubber.
Cordless Rotary Tool Accessories
Use only Dremel Tested, High Performance Accessories. Other accessories are not
designed for this tool and may lead to personal injury or property damage.
!
WARNING
Page 17
Page 17
Aluminum Oxide Grinding Stones (orange/brown)
Round, pointed, flat — you name the shape and there is
one available in this category. These are made of aluminum oxide and cover virtually every possible kind of
grinding application. Use them for sharpening lawn
mower blades, screwdriver tips, knives, scissors, chisels and other cutting tools. Use to remove flash from
metal castings, deburring any metal after cutting,
smoothing welded joints, grinding off rivets and removing rust. In machine shops, high speed drills and cutters
normally are ground with aluminum oxide wheels.
Silicon Carbide Grinding Stones (green/gray)
Tougher than aluminum oxide points, these are made
especially for use on hard materials such as glass and
ceramics. Typical uses might be the removal of stilt
marks and excess glaze on ceramics and engraving on
glass.
Diamond Wheel Points
Excellent for fine detail work on wood, jade, ceramic,
glass and other hard material. Bits are covered with
diamond particles. 3/32" shanks.
Polishing Accessories
These include an impregnated polishing point and an
impregnated polishing wheel for bringing metal surfaces to smooth finish; a felt polishing tip and felt
polishing wheel, and cloth polishing wheel, all used for
polishing plastics, metals, jewelry and small parts. Also
included in this group is a polishing compound (No.
421) for use with the felt and cloth polishers.
Polishing points make a very smooth surface, but a
high luster is obtained using felt or cloth wheels and
polishing compound.
No polishing compound is needed when using the
425 Polishing Wheel or 427 Polishing point.
Aluminum Oxide Abrasive Wheels
Use to remove paint, deburr metal, polish stainless
steel and other metals. Available in fine and medium
grits.
Sanding Accessories
Sanding discs in fine, medium and coarse grades are
made to fit mandrel No. 402. They can be used for
nearly any small sanding job you might have, from
model making to fine furniture finishing. In addition,
there is the drum sander, a tiny drum which fits into the
Rotary Tool and makes it possible to shape wood,
smooth fiberglass, sand inside curves and other difficult places, and other sanding jobs. You replace the
sanding bands on the drum as they become worn and
lose their grit. Bands come in fine and coarse grades.
Wire Brushes
Three different shapes of wire brushes are available.
For best results wire brushes should be used at
speeds not greater than 15,000 RPM. The three
shapes come in three different materials: stainless
steel, brass and carbon wire. The stainless steel perform well on pewter, aluminum, stainless steel, and
other metals, without leaving "after-rust". Brass brushes are non sparking, and softer than steel; making
them good for use on soft metal like gold, cooper and
brass. The carbon wire brushes are good for general
purpose cleaning.
Page 18
Page 18
Bristle Brushes
These are excellent cleaning tools on silverware, jewelry and antiques. The three shapes make it possible to
get into tight corners and other difficult places. Bristle
brushes can be used with polishing compound for
faster cleaning or polishing.
Brushing Pressure
1. Remember, the tips of a wire brush do the work.
Operate the brush with the lightest pressure so only
the tips of the wire come in contact with the work.
2. If heavier pressures are used, the wires will be
overstressed, resulting in a wiping action; and if this
is continued, the life of the brush will be shortened
due to wire fatigue.
3. Apply the brush to the work in such a way that as
much of the brush face as possible is in full contact
with the work. Applying the side or edge of the brush
to the work will result in wire breakage and shortened
brush life.
Grinding Wheel
Use for deburring, removing rust, and general purpose
grinding. Use with Mandrel #402.
Cutting Wheels
These thin discs of emery or fiberglass are used for
slicing, cutting off and similar operations. Use them for
cutting off frozen bolt heads and nuts, or to reslot a
screw head which has become so damaged that the
screwdriver won’t work in it. Fine for cutting BX cable,
small rods, tubing, cable and cutting rectangular holes
in sheet metal.
High Speed Cutters
Made of high quality steel. All have 1/8" shanks. Can be
used for shaping, hollowing most metals, plastics and
woods.
Drywall Cutting Bit
Gives you fast, clean cuts in drywall.
Spiral Cutting Bit
Cuts through all types of wood and wood composites.
Cordless Rotary Tool Accessories (Cont.)
Use only Dremel Tested, High Performance Accessories. Other accessories are not
designed for this tool and may lead to personal injury or property damage.
!
WARNING
15°
CORRECT:
Wire tips doing the work.
INCORRECT:
Excessive pressure can cause wire breakage.
Page 19
Page 19
Mandrel No. 401 is used with the felt polishing tip and
wheels. Thread the tip on to the screw carefully.
The felt tip must thread down straight on the screw
Mandrel, and be turned all the way to the collar.
Mandrel No. 402 has a small screw at its tip, and is
used with emery cutting wheels and sanding discs.
Higher speeds, usually maximum, are best for most
work, including cutting steel. Which is shown here.
The machine-screw threading on Mandrel No. 424
threads into polishing point No. 427.
This and other threaded mandrels must be screwed
firmly down to the collar before being used.
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Your Dremel product is warranted against defective material or workmanship for a period of two years from date of
purchase. In the event of a failure of a product to conform to this written warranty, please take the following action:
1. DO NOT return your product to the place of purchase.
2. Carefully package the product by itself, with no other items, and return it, freight prepaid, along with:
A. A copy of your dated proof of purchase (please keep a copy for yourself).
B. A written statement about the nature of the problem.
C. Your name, address and phone number to:
UNITED STATES
Dremel Service Center Dremel Service Center
4915 Twenty-First Street OR 4631 E. Sunny Dunes
Racine, Wisconsin 53406 Palm Springs, CA 92264
CANADA OUTSIDE
Giles Tool Agency CONTINENTAL UNITED STATES
6520 Lawrence Av. East See your local distributor or write
Scarborough, Ont. to Dremel, 4915 Twenty-First St.
Canada M1C 4A7 Racine, Wisconsin 53406
1-888-285-3476
We recommend that the package be insured against loss or in transit damage for which we cannot be responsible.
This warranty applies only to the original registered purchaser. DAMAGE TO THE PRODUCT RESULTING FROM
TAMPERING, ACCIDENT, ABUSE, NEGLIGENCE, UNAUTHORIZED REPAIRS OR ALTERATIONS, UNAPPROVED
ATTACHMENTS OR OTHER CAUSES UNRELATED TO PROBLEMS WITH MATERIAL OR WORKMANSHIP ARE NOT
COVERED BY THIS WARRANTY.
No employee, agent, dealer or other person is authorized to give any warranties on behalf of Dremel. If Dremel
inspection shows that the problem was caused by problems with material or workmanship within the limitations of
the warranty, Dremel will repair or replace the product free of charge and return product prepaid. Repairs made necessary by normal wear or abuse, or repair for product outside the warranty period, if they can be made, will be
charged at regular factory prices.
DREMEL MAKES NO OTHER WARRANTY OF ANY KIND WHATEVER, EXPRESSED OR IMPLIED, AND ALL IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE WHICH EXCEED THE ABOVE
MENTIONED OBLIGATION ARE HEREBY DISCLAIMED BY DREMEL AND EXCLUDED FROM THIS LIMITED WARRANTY.
This warranty gives you specific legal rights and you may also have other rights which vary from state to state. The
obligation of the warrantor is solely to repair or replace the product. The warrantor is not liable for any incidental or
consequential damages due to any such alleged defect. Some states do not allow the exclusion or limitation of incidental or consequential damages, so the above limitations or exclusion may not apply to you.
For prices and warranty fulfillment in the continental United States, contact your local Dremel distributor.
Dremel Limited Warranty
Page 21
Página 61
CODE PART
NO. NO. DESCRIPTION DESCRIPTION DESCRIPCION
1 2615297355 Collet Nut
Ecrou De Douille Tuerca del portaherramienta
2 2615000480 1/8" Collet (In Tool)
Douille 3,2 mm po (avec l'outil) Portaherramienta de 3,2 mm
3 2610917263 Shaft Lock Assembly
Ensemble de blocage de l’arbre Ensamblaje del cierre del eje
4 2610916207 Motor & Shaft Assembly
Ensemble moteur et arbre Ensamblaje del motor y el eje
5 2610347948 Screw (2)
Vis
(2)
Tornillos
(2)
6 2610917264 Housing Set
Bâti Juego de caja protectora
7 26150756AA Charger Chargeur Cargador
8 26150755AA Battery Pack Bloc-pile Paquete de baterias
9 2610916208 Switch Assembly
Montage de l'interrupteur Ensamblaje del interruptor
10 2610916357 Glamour Cap
Capuchon fantaisie Tapa de fantasia
MODEL 750 Type 2
MODÈLE 750 Type 2
MODELO 750 Tipo 2
10
1
2
4
3
7
5
5
6
6
8
9
Page 22
Página 62
MODEL 770 Type 2
MODÈLE 770 Type 2
MODELO 770 Tipo 2
CODE PART
NO. NO. DESCRIPTION DESCRIPTION DESCRIPCION
1 2615297355 Collet Nut
Ecrou De Douille Tuerca del portaherramienta
2 2615000480 1/8" Collet (In Tool)
Douille 3,2 mm po (avec l'outil) Portaherramienta de 3,2 mm
3 2610917263 Shaft Lock Assembly
Ensemble de blocage de l’arbre Ensamblaje del cierre del eje
4 2610916207 Motor & Shaft Assembly
Ensemble moteur et arbre Ensamblaje del motor y el eje
5 2610347948 Screw (2)
Vis
(2)
Tornillos
(2)
6 2610917262 Housing Set
Bâti Juego de caja protectora
7 26150758AA Charger 3 Hr. Chargeur 3 Hr. Cargador 3 Hr.
8 26150757AA Battery Pack Bloc-pile Paquete de baterias
9 2610916208 Switch Assembly
Montage de l'interrupteur Ensamblaje del interruptor
10 2610916357 Glamour Cap
Capuchon fantaisie Tapa de fantasi
11 2615294028
Housing Cap Chapeau du bâti Tapa de la caja protectora
10
1
2
4
7
5
5
6
6
8
9
3
11
Page 23
Página 63
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