Nitto Kohki ATRA ACE ARA-100A User manual

Original Instruction
PORTABLE MAGNETIC DRILLING MACHINE
Read this manual carefully before operating your Nitto Kohki
Portable Magnetic Drilling Machine. Keep this manual with
your machine. All users of the Nitto Kohki Portable Magnetic
Drilling Machine must read this manual.
ATRA ACE Model ARA-100A
Professional Tool
Specifications
Model ARA-100A
Drill Motor
PowerSource(SinglePhase) 220-240 V AC 50/60 Hz
RatedPowerConsumption 1800 W
Rated Current 8.2A
No-load Speed 110-210/330-660 min-1
Magnet
PowerConsumption 80 W
Holdingpower 17000N
Dimensions 110 × 220mm
Weight 30kg
(Cord and Sub handle are not included.)
Short-Circuit Current Rating 5kA
Cutter Max. Plate Thickness Hole Diameter
JETBROACH One-touch Type 35mm 17.5 to 40mm dia. 50mm 17.5 to 50mm dia.
75mm 17.5 to 50mm dia.
JETBROACH 75mm 50 to 100mm dia.
HI-BROACH One-touch Type 50mm 18 to 35mm dia.
TWIST DRILL ーMax.32mm dia.
Be sure to install a circuit breaker with a 15Arating on the power supply outlet
before plugging this machine into the outlet.
Team lift when moving the machine.
The specifications and configurations contained in this document are subject to
change without prior notice due to improvements we are making day in, day out.
Manufactured by :
NITTO KOHKI Co., Ltd.
2-9-4, Nakaikegami, Ota-ku,
Tokyo, 146-8555, Japan
Tel : [phone]
Fax : [phone]
E-mail : [email protected]
URL : www.nitto-kohki.co.jp
Keep the manual handy – so you can use it whenever necessary.
TQ14212-0

1
The following Safety notations are used throughout the manual to highlight safety precautions for the user and for
the machine.
DANGER: Indicates an imminently hazardous situation which, if not avoided by following the
instructions given, will result in death or serious injury.
WARNING: Indicates a potentially hazardous situation which, if not avoided by following the
instructions given, could result in death or serious injury.
CAUTION: Indicates a potentially hazardous situation which, if not avoided by following the
instructions given, could result in injury or material damage.
Caution: Important precautions for machine or tool setup, operation and maintenance.
Thank you for purchasing Nitto Kohki
product.
Before using this tool, please read this
manual carefully so ensure proper, ef-
ficient operation.
This manual should be kept close
at hand.
CONTENTS page
GENERAL SAFETY RULES ………………………………… 2
POWER TOOL SAFETY……………………………………… 3
ABOUT YOUR NITTO PORTABLE MAGNETIC
DRILLING MACHINE ………………………………………… 4
1. APPLICATION …………………………………………… 7
2. RECEIVING INSPECTION ……………………………… 7
3. PART NAMES …………………………………………… 7
4. FUNCTION OF ELECTRIC CONTROL ……………… 8
5. MACHINE SETUP ……………………………………… 8
6. MACHINE OPERATION ……………………………… 12
7. HOW TO USE TWIST DRILL ………………………… 15
8. TROUBLESHOOTING ……………………………… 15
9. MAINTENANCE /SERVICE ………………………… 16
10. OPTIONAL PARTS …………………………………… 17
11. ORDERING PARTS …………………………………… 19
PICTOGRAM
Warning: It might be dangerous to operate the
machine if the instructions supplied are not followed.
Do not allow the main body or the power source to get
wet as it will cause electric shock and leakage.
Using this tool improperly could result in serious injury.
Read the instruction manual before using.
Always wear suitable eye protection.
Always wear suitable hearing protection.
Always wear respiratory protective equipment.
・Sound Pressure Level : Maximum 92dB(A)
Operating Condition : No load (Drill speed volume
100%, Drill speed change HIGH)
Measuring Method : According to clause 1.7.4.2 of
Machinery Directive 2006/42/EC
・Sound Power Level : Maximum 103dB(A)
・Operating Temperature : 5˚C 〜40˚C
・Max. operation altitude : 1000m
・Operating Humidity : Maximum 90% at 25˚C
・Over-voltage Category : Category Ⅱ according to IEC664-1
・Pollution Degree : Degree 3 according to IEC664-1
・Wiring Diagram No. : TZW0147
・Disposal of this product : When disposing of this product,
please contact the distributor you
purchased the product from.
・English :Please ask your dealer or
distributor for instruction manual
in local language(s).
・German :Bitte fragen Sie lhren Händler
nach eine Betriebsanleitung in
Landessprache.
・French :S'il vous plait, veuillez demandez
á votre foumisseur de manuel
instruction en langue locale.
・Spanish :Por favor, cantacte con su
distribuidor para el manual de
instrucciones en español.
・Portuguese :Por favor pessa ao seo agente
ou distribuidor o manual de
instrucces ih linguagen local.
・Italian :Per Manuale Istruzioni in lingua
locale Vi preghiamo di rivolgervi
al rivenditore o distributore.
・Dutch :Vraag uw handelaar
om een nederladstalige
gebruiksaanwijzing.
・Swedish :Be er lokala Åtreförsäljare eller
distributör om manualer pá
svenska.
・Danish :Venligst henvend Dem til den
danske distributør for instructions
manualer.
・Polish :Prosze pytac swojego dealera
lub dystrybutora o instrukcje
obslugi w jezyku localnym.
・中文 :

2
WARNING
Some dust created by power sanding, sawing, grinding,
drilling, and other construction activities contains
chemicals known [to the State of California] to cause
cancer birth defects or other reproductive harm.
Some examples of these chemicals are:
●lead from lead-based paints,
●crystalline silica from bricks and cement and other
masonry products, and
●arsenic and chromium from chemically-treated
lumber.
Your risk from these exposures varies, depending on
how often you do this type of work. To reduce your
exposure to these chemicals: work in a well ventilated
area, and work with approved safety equipment, such
as those dust masks that are specially designed to
filter out microscopic particles.
GENERAL SAFETY RULES
WARNING
TO OPERATORS
Always Wear Proper Clothing
●Do not wear loose clothing. Loose clothing can
becomecaughtin the drilling machine.This could
cause severe injuries. Be careful that loose clothing
does not come into contact with the machine.
●Wear non-skid footwear. If you lose your footing,
you could contact moving portions of the machine.
This could cause severe injuries. Always wear non-
skid footwear and remain balanced when using the
drilling machine.
●Be careful of long hair. Wear a hat or a hair net to
contain long hair. Long hair can become caught in
the drilling machine. This will cause severe injuries.
Be careful that long hair does not come into contact
with the drilling machine.
Always Wear Suitable Eye Protection
●Always wear suitable eye protection. The operation
of your drilling machine will cause flying chips and
particles. These will cause severe eye injuries. You
must always wear suitable eye protection.
●Not all glasses are suitable eye protection. Wear
only suitable eye protection that comply with ANSI
standards. Not all of the lenses are shock resistant.
Glasses for vision correction are not for eye protection.
Select protective glasses suitable for the work.
Always Wear Suitable Hearing Protection
●Always wear suitable hearing protection.The
operation of your drilling machine will cause big
sound occurs. These will cause severe hearing loss
injuries. You must always wear suitable hearing
protection.
Always Wear respiratory protective equipment
●tnempiuqeevitcetorpyrotaripserraeWsyawlA
when working in an environment where dust
particles are generated in operation.
Maintain Good Posture
●Always wear non-skid footwear and maintain
good posture.Do not use the drilling machine
when you are tired. Fatigue or loss of balance could
cause you to lose control of the machine. This could
cause severe injuries. Always stay balanced. Always
keep good posture. Stop using the machine if you
are tired.
Never Touch the Cutting Tip
●Never touch the moving parts or cutting tip.
Contact with the moving tip will cause severe
injuries. Always keep all parts of your body away
from the cutting tip. Always keep your hand and
clothing away from the cutting tip.
ABOUT THE WORK AREA
Keep Work Area Clean
●Always keep your work area clean. Cluttered work
areas cause accidents. Always keep clear of other
objects.
●Never use the magnetic drilling machine when
it is wet.Always use the drilling machine in a dry
area. Do not use the drilling machine in the rain.
If you use the machine when it is wet you can get
electric shock. If you use the machine in the rain you
can get an electric shock.
●Always use the drilling machine in a well-lighted
area. Do not use the drilling machine in the dark.
●Avoid all flammable materials.Use of the drilling
machine may cause a spark that could ignite a fire
or an explosion.
Never use the machine near any flammable
material.
●Keep away from children. Always keep the drilling
machine away from children. Do not operate drilling
machine when children are present.
BEFORE OPERATION
Make sure that all parts are free from damage
●Make sure that the drilling machine is in good
operating condition.Operating a damaged
machine could result in severe injuries. If there
is any damage to the machine, do not use the
machine. If there is any damage to the machine,
take it to an authorized Nitto dealer for repair.
●Do not attempt service or repair of the drilling
machine. All service or repair should be done by an

3
authorized Nitto dealer.
Secure Your Work
●Always secure your work piece.Improperly
mounted work can become loose. This can cause
severe injuries. Always secure all work.
●Do not attempt to hold any work piece with your
hand.Attempting to hold a work piece with your
hand may cause severe injuries. Always use a vice
or clamp to hold the work piece.
●Always secure your drilling machine. Improperly
mounted drilling machine can come loose. This can
cause severe injuries. Always secure the drilling
machine.
Avoid Clutter
●Always stay clear of other objects. Cluttered work
areas cause accidents. Always keep a clean work
area and stay away from other objects.
Always Remove Spanner Wrenches and
Adjustment Tools
●Always remove spanner wrenches and
adjustment tools after adjustments have been
made to the drilling machine.
Always Use aCutter thatisAppropriate for Your Work
●Always use a Cutter that is appropriate for your
work.Avoid work that is the beyond the capacity
of your drilling machine. If the work exceeds the
capacity of your drilling machine, this can cause
accidents and severe injuries. Always use the
drilling machine in accordance with its performance
specifications.
SAFE HANDLING
●Never leave the magnetic drilling machine
unattended while it is running. When the machine
is unattended, disconnect the power source. Do not
leave the work area until the machine comes to a
complete stop.
HOW TO STORE YOUR MAGNETIC DRILLING
MACHINE
●Always store the machine off the cement floor
and on flat surface with the machine unplugged.
● Always store the machine off the cement floor,
flat surface and unplugged.
●Always store the machine in a dry area.
● Always keep the machine out of the reach of
children.
HOW TO CARRY YOUR MAGNETIC DRILLING
MACHINE
●Disconnect the power and turn off the machine
whenever you carry the machine.
MAINTENANCE
Do not take apart or modify your magnetic drilling
machine.
●Do not attempt to disassemble or modify your
magnetic drilling machine.
●Do not modify your magnetic drilling machine.
Modifications can cause accident and severe injuries.
●All service and repairs must be performed by an
authorized Nitto dealer. Any attempt to service or
repair the machine yourself may result in an accident
and severe injuries.
Check all Parts for Damage.
●Always inspect the magnetic drilling machine before
use.
●Always check that the pilot pin and cutter are in good
condition. Use of the machine with worn pilot pins or
worn cutter can cause accidents and severe injuries.
●Inspect all cutters before you put them on the
magnetic drilling machine.
●Do not operate the magnetic drilling machine with a
damaged or worn cutter. Do not operate the machine
with a damaged or worn pilot pin. Do not operate the
machine with any damaged accessory. Operating
the machine with any damaged part or accessory
can cause accidents and severe injuries. If there is
any damage to the magnetic drilling machine do not
operate the machine. Take it to an authorized Nitto
Dealer for repair.
●Always have the magnetic drilling machine repaired
at an authorized Nitto dealer. Always take the
magnetic drilling machine to an authorized Nitto
dealer for service, repair and replacement parts. If
you cannot locate an authorized Nitto dealer near
you, please contact your sales representative.
●Always use Nitto genuine parts. The use of improper
or non-Nitto parts can cause accidents and severe
injuries.
To obtain genuine Nitto parts, contact your sales
agent.
●Do not remove any nameplate from your magnetic
drilling machine. Do not remove any labels from
your magnetic drilling machine. If any label or
nameplate is damaged contact your sales agent for
a replacement.
POWER TOOL SAFETY
WARNING
●Always make sure that the machine is properly
grounded. If the machine is not properly grounded,
someone can get an electric shock.
●If you have any doubt about the grounding of

4
the magnetic drilling machine, contact a licensed
electrician.
●Never connect the grounding conductor to a gas
pipe. This will result in an explosion and severe
injuries or death.
●Always check the grounding conductor. If you have
any doubts about the grounding conductor contact a
licensed electrician.
●Wiring connections to a grounding rod require the
expertise of a licensed electrician. Do not attempt
the wire connections yourself. Always contact a
licensed electrician.
●Do not abuse the power cord. A damaged power
cord can cause an electrocution. A damaged power
cord can cause fires. Always inspect the cord. If the
cord is damaged, do not use the magnetic drilling
machine.
●Do not carry the machine by the cord. Do not pull
the cord to disconnect it from a socket.
●The cord can become damaged from heat, contact
with sharp objects or from being twisted. Always
inspect the cord. Do not use the machine if the cord
is damaged.
●Always use a ground fault circuit interrupter. The use
of a ground fault circuit interrupter may be required
by government regulations. The failure to use a
ground fault circuit interrupter may result in electric
shock.
●Avoid starting the magnetic drilling machine abruptly
or unintentionally.
●Always make sure that the switch is turned off before
connecting the power source.
●Always disconnect the power source and turn off
the switch before setting up for work operations.
Always disconnect the power and turn off the
switch when inspecting work. Always disconnect
the power and turn off the switch before attempting
any maintenance. Failure to disconnect the power
and turn off the switch during set up, inspection
or maintenance can cause accidents and severe
injuries.
ABOUT YOUR NITTO PORTABLE
MAGNETIC DRILLING MACHINE
DANGER
Do not use your portable drilling machine on the
ceiling.
● Use of the portable drilling machine on the ceiling
is dangerous. The machine could fall. The falling
machine could cause severe injuries or death. (Fig.1)
(Fig.1)
WARNING
Do not use the Magnet for more than five hours.
●More than five hours of uninterrupted operation
may cause a fire. Five hours of uninterrupted
operation generates extreme heat in the Magnet and
permanently damage the internal coils. Do not touch
the Magnet when the Magnet is hot. Touching it will
cause a severe burn injury. When you are not using
the Magnet, turn the switch to the OFF position and
unplug the machine.
Do not use the Drill Motor for over 30 minutes.
●Uninterrupted operation of the Drill Motor for over
30 minutes generates heat. This heat can cause a
fire. When you are not using the Drill Motor, turn the
switch to the OFF position and unplug the machine.
Use only on magnetic materials.
●Your portable drilling machine cannot be used
on non-magnetic materials, such as aluminum,
stainless steel, copper or alloys. The Magnet will
not adhere on non-magnetic materials. Attempting
to use the Magnet on non-magnetic materials could
cause an accident.
Use caution during wall operation.
●When using your portable magnetic drilling machine
on a magnetic wall, always use caution.
●Never stand under the machine.
* Never allow anyone to stand under the machine.
* Never put any part of your body under the machine.
* If the machine falls, it could result in severe injury or
death.
●Always remove Cutting Oil from the Tank before
using the machine on a wall. You must manually
apply Cutting Oil to the cutting tool.
Always use a work piece that is at least 13 mm
thick.
●The work piece must be at least 13 mm thick. If a

5
Use an iron back-up plate.
●If the work piece is less than 13mm thick, you must
use an iron back-up plate that is more than 10 mm in
thickness. The surface area of the iron back-up plate
must be greater than the surface area of the magnet.
An appropriate back-up plate is necessary to boost
the holding power of the Magnet.(Fig.3) Use of an
inappropriate back-up plate can result in an accident.
If the back-up plate is not thick enough or big enough,
the machine will come loose during operation. This
can result in an accident and severe injuries.
Lessthan13mm Place 10mm or greater thick piece
(Fig. 3)
Always keep surfaces clean.
●Always keep the Magnet surface clean. Always keep
the work piece surface clean. If there are any foreign
objects between the Magnet and the work piece
surfaces, this will reduce magnetic power. This could
cause the machine to move during operation. This
can result in an accident. Keep all surfaces clean of
rust, chips or other foreign material.
Do not place the machine over a hole.
●Do not attempt to position the Magnet over a hole.
Attempting to straddle a hole will reduce the power
of the Magnet. This will cause the work piece to
come loose during operation and can cause an
accident.
Always use a chain to secure the machine.
●If the machine falls, it can cause severe injuries.
There is always a possibility that magnetic power
can be lost or reduced because of a power failure.
Magnetic power can be lost on rough surfaces. You
must take precautions to prevent the machine from
falling.
●This machine comes with a chain. The chain is to be
used to fasten the machine to the work piece. If you
do not use the chain, it is possible that the machine
may fall. (Fig.4)
Chain
(Fig. 4)
●If use of the chain is not possible because of the
size of the work piece, you must use another method
of securing the machine. Use a Supporting Magnet
Ass’y to prevent the machine from falling.
●The use of a Supporting Magnet Ass’y is shown
below. (Fig.5)
Supporting Magnet Ass’y
(Fig. 5)
Always set the Magnet in the proper position.
●Always set the Magnet parallel to the longitudinal
direction of the material. Failure to set the Magnet in
the proper position may result in reduced magnetic
power. This can cause the machine to move in
operation. This can cause an accident resulting in
severe injuries.
●When using on H-section steel, as shown in the
figure below, set the Magnet in a direction parallel
to the longitudinal direction of the material. This will
ensure that the Magnet is in the best position for
magnetic attraction.(Fig.6)
(Fig. 6)
work piece is too thin, the magnetic power of your
machine will decrease. This will cause the machine
to move during operation. This could result in an
accident. (Fig.2)
Not less than13mm
(Fig. 2)

6
●Poor magnetic power may result in damage to the
cutter or damage to the work piece.
Be careful about chips.
●Keep your hands away from the cutting area at all
times. During drilling, there will be chips. The chips
are sharp. The chips are rotating with the cutter. Any
contact with the chips can cause severe injuries.
Do not touch the slug.
●Do not touch the slug. The slug is very hot and
sharp. It will cause severe burns. Make sure that
no one touches the slug. Make sure that there is
no one below the work area during operation. Hot
slugs will fall. Hot slugs can cause severe burns,
other severe injuries, or even death. Always wear
protective equipment, including protective headgear,
eye protection, hearing protection, and gloves. Do
not allow any person without protective equipment to
come near the machine.
Do not use your hands to remove chips.
●Chips have sharp edges. Use a screwdriver to
remove chips. If you use your hands to remove
chips, you can be injured, even if you are wearing
gloves. Do not use your hands to remove chips
under any circumstances.
The cutting edge is sharp.
●Always wear gloves when changing the cutter. The
cutting edge is sharp. If you do not wear gloves,
you will be cut. Attempting to change the cutter can
result in severe injuries.
Do not use Cutting Oil for other purposes.
●Cutting Oil should be used only for drilling. Please
refer to Section 5-7 of this manual for further
warnings and instructions about Cutting Oil.
●Stop the work and inspect the machine when
abnormal spark is observed with the carbon brushes
of the drilling machine.
CAUTION
Always use a compatible Pilot Pin.
●The Pilot Pin must be compatible with the cutter. An
improper Pilot Pin may result in an accident. See
Section 5-3 to identify compatible Pilot Pins and
cutters. The proper Pilot Pin to be used will vary,
depending on the type of cutter, the diameter of the
cutter, and the length of the cutter.
Do not use power that is generated by an engine-
driven welder.
●The use of an engine-driven welder as a power
source may cause your magnetic driven machine to
malfunction, Power from an engine-driven welder
can damage the electronic circuits in your portable
drilling machine.
●Do not use an extension cord that is too thin. Do
not use an extension cord that is too long. Do not
use an extension cord that is wound on a drum. Do
not share an extension cord with other motor-driven
tools. These uses can cause voltage to drop and
can reduce the holding power of the magnetic base,
causing the machine to move during operation. This
can decrease performance and may cause damage
to the machine. (Fig.7)
Use a Proper extension cord.
Extension Cord
Max length Size (nominal cross-section area of
the conductor)
10 m Min 2.0 mm2or more
20 m Min 3.5 mm2or more
(Fig. 7)
Don’t use this machine on the steel material being
electrically welded.
●When the electric welder is not properly grounded,
electricity will run through the Atra Ace machine via
its Magnet and Power cord, causing possible failure
or malfunctioning, which in turn may cause accident.
Don’t force to feed cutter when drilling manually.
●Because the Hi-Broach and Jetbroach have
rather thin cutting edges with less cutting pressure
resistance as compared to twist drill, do not force to
feed the cutter when drilling manually.
If you feed it with too much force, the cutter may
break or end up with shorter life.
Lower the drill when not using to store the drilling
machine.
●The main unit may turn over when the drill is kept in
lifted position.
The color of LED changes according to the load
of the drilling machine. Use the drilling machine
when LED is green.
●LED turns green when load of the drilling machine
is normal and turns red when excessive load is
applied.
Excessive load is applied to the drilling machine when
LED is turned red. Slow the feed speed to be able to
drill with load in which lights only the green LED.

7
The output of motor decreases and LED turns
red when excessive load is applied to the drilling
machine. When the same load is further applied
for approx. six seconds, the drilling machine will
automatically stop and the green LED will blink.
●The output of the drilling machine decreases for
protection when further load is applied in red LED.
The drilling machine returns to normal operation
when load is reduced before it completely stops
by excessive load. When the drilling machine has
stopped automatically, the drilling machine will only
operate after turning the motor switch OFF and then
turned back ON.
Team lift when moving the machine.
●The mass of the drilling machine is 30kg. Carry the
machine with two people by holding the grip of the
main unit and the side handle of the drilling machine.
1 APPLICATION
This is a portable drilling machine with a Magnet,
geared to drill mild steel (mild steel or equivalent)
using various cutters. The machine will be mounted on
the work piece to be drilled with the Magnet securely
fastening the machine to the work piece while drilling
takes place.
2 RECEIVING INSPECTION
Upon unpacking, check to see that the shipment is
complete without damage or oil leakage in transport.
Should you find any damage or short-shipment, please
contact sales agent through which you have
purchased your machine or an authorized dealer near
you for corrective actions.
Package Contents Q’ty Check
ATRA ACE 1set
Holder MT03075 Side lock 1set
Pilot Pin 12075 1
Rod Handle 3
Side Handle 1
Hex. Socket Screw Key 2.5 1
Hex. Socket Screw Key 5 1
Hex. Socket Screw Key 6 1
Hex. Socket Screw Key 8 1
Spanner 7X8 1
Drill Drift (see Fig.11) 1
Chain 1
Guard 1
Instruction Manual 1
3 PART NAMES
 (Fig. 8)
Rod Handle
Window
Drill Speed Control Knob
Load Detector LED Lamp
Drill Motor
Hex. Socket Set Screw
With Flat Point M20x120
(Stabilizer)
Body
Set Screw
Power Plug
Clamp Lever
Magnet
Pole Plate
Stopper Plate
Stopper Bolt
Holder
Oil Dropper
Shift lever
Side Handle
Oil Tank
Oil Tank Bracket
Hex. Nut Type3 M20
Slow Start Switch
MotionSensor Delay Switch
MotorSwitch
Magnet Switch
Slide Board
Adjustment Screws
Slide Board

8
4 FUNCTIONS OF ELECTRONIC
CONTROL
4-1. Load detection function
Device to automatically operate functions described
below when excessive load is applied in drilling.
Do not use the drilling machine with an engine
generator as the power source or when the voltage
of the power source is too high or low since the load
detection function may not operate properly.
(1)Load indication function
The load condition of the drilling machine is
indicated by LED. LED turns green when load of
the drilling machine is normal and turns red when
excessive load is applied.
(2)Automatic stop function
When load is further applied to the drilling machine
with LED turned red, the output of motor drops and
LED starts blinking quickly. When load is further
applied for approx. six seconds in that condition, the
drilling machine will stop automatically to protect the
drilling machine and the green LED will blink.
To continue the work, turn the motor switch OFF, lift
the cutter slightly in the hole, and then turn it ON.
The drilling machine will operate.
(3)Automatic restart function
When load is reduced before complete stop of the
drilling machine by excessive load, LED switches
from blinking in red to continuous green and returns
to normal operation.
4-2. Drill speed control function
The speed of the drilling machine can be adjusted
from 100 to 50% by turning the drill speed control
knob to the right.
Use the control for fine adjustment of the drill speed
when using materials difficult to machine, to prevent
chattering of the cutter, to extend the service life of the
cutter or other purposes.
4-3. Motion detection function
When excessive vibration or lateral motion of the
magnet is observed during drilling, the drilling machine
will stop and the red LED will blink.
To continue the work, turn the magnet switch OFF and
ON again, lift the cutter slightly in the hole, and restart
the operation.
4-4. Motion detection switching function
Prior to starting drilling operations while the drill motor
is running, press the motion sensor delay switch to
temporarilycancel the lateral motion detection function
when adjusting the swivel base. The function will be
canceled for approx. eight seconds and the red and
green LED blinks alternately, this allows the machine
to drill properly after the base is adjusted.
4-5. Slow start function
The drilling machine operates in slow speed at the
start of cut to reduce chattering during drilling. It will
return to normal operation five seconds after load is
detected.
Turn the slow start switch ON when using a cutter of
φ80mm or more.
Turn the switch OFF when using a cutter of below
φ80mm.
4-6. Re-start Prevention
The re-start prevention function comes into play when
power is restored after an outage during operation.
The green LED will blink and the magnet will be
activated, however, the drilling machine will not
operate for safety.
Turn the motor switch to the OFF position and turn it
back ON to operate the drilling machine and continue
the work.
4-7. Magnet Interlock
When the Magnet fails, the drill motor will not start
and the red LED lamp will blink. To repair a defective
magnet, please contact the sales agent from whom
you purchased your unit or an authorized dealer near
you.
5 MACHINE SETUP
WARNING
●When setting up machine, turn off the Magnet
Switch and disconnect the power supply plug
from power source.
5-1. Mounting Parts
(1)Rod Handle (three pieces)
Mount the Rod
Handles on the
Handle Boss.
(2)Side Handle
Mount the Side
Handle on the
Drill Motor.
(3)Oil Tank Bracket (Fig.9)
Mount the Oil Tank Bracket on the Slide Board.
(4)Stabilizer
Screw in Hex. Socket Set Screw with Flat Point
M20x120 and Hex. Nut Type3 M20 to the rear part
of the body.
Hex. Socket Head Cap Screw 6×75
Washer M6
Spacer Oil Tank Bracket
Guard Tank Bracket
Oil Tank Bracket
(Fig. 9)

9
5-2. Using Cutter
CAUTION
●Use a holder appropriate for the cutter to use.
●Do not use worn or damaged cutter for better
workability and safety.
(1) Holder MT03075 Side lock Ass’y (Standard
accessory)
Holder exclusive for φ50 to φ100mm×75L
Jetbroach. Do not use for other cutters.
(2) Holder MT03075 One-touch Ass’y (Option)
Holder exclusive for Jetbroach one-touch and Hi-
Broach one-touch. Do not use for other cutters.
5-3. Combination of Cutter and Pilot Pin
CAUTION
●Do not use any other combinations than those
shown in the compatibility table.
Use a Pilot Pin appropriate for the cutter. (Fig.10)
A Pilot Pin to be used varies depending on the cutter
type, diameter, length (depth). A wrong combination
of cutter and Pilot Pin would not allow slug to be
ejected at the end of drilling and/or prevent Cutting
Oil from reaching the cutting point, resulting in
cutting tool damage.
(Fig. 10)
5-4. Attachment and detachment of holder
WARNING
●Turn the magnet switch OFF and unplug the
power plug when replacing the holder.
●Do not use a holder that is not of a genuine
product.
●Ensure the attachment of the holder. It may
cause damage when holder is not attached
properly.
CAUTION
●Make sure that the Holder will fit in the Spindle
of the Drill Motor.
●Keep the holder insertion area clean all the time.
When waste such as cut chip is entered in the
insertion area, remove it completely and then
attach the holder.
●Make sure to prevent adhesion of oil to the
holder insertion area and tapered shank when
attaching the holder. Wipe the oil cleanly if oil is
adhered.
●Pay attention not to drop the holder when
attaching it.
(1) How to attach holder (Fig.11)
Engage the lugs on the holder to the notches in the
spindle; rotate the oil ring to align the stopper bolt to
the stopper plate, then insert the holder forcefully.
Stopper Bolt
stopper plate notch
Holder
ドリルドリフト
窓
Tongue
(Fig. 11)
(2) Detachment of holder (Fig.12)
Turn the drill so that the tongue at the holder head
can be seen from the window of the drilling machine.
Insert the drill drift through the window and hit the
drill drift with a hammer to detach the holder.
ストッパボルト
ストッパプレート溝位置
ホルダ
Drill Drift
Window
タング
(Fig. 12)
5-5. Attachment and detachment of cutter
WARNING
●Turn the magnet switch OFF and unplug the
power plug when replacing the cutter.
●Do not use any combination of the pilot pin
and cutter not indicated in the combination
compatibility table.
●Wear gloves when replacing the cutter.