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 CLA-2720 Professional Tool For One-Touch Type Annular Cutter Only (Side-Lock Type Annular Cutter cannot be used.
Thank you very much for your purchase of Nitto Kohki product. Before using your machine, please read this manual carefully so that you may use it properly to get the most out of it. Please keep the manual handy - so you can use it whenever necessary. ・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.
GENERAL SAFETY RULES WARNING TO OPERATORS Always Wear Proper Clothing ● Do not wear loose clothing. Loose clothing can become caught in 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 nonskid footwear and remain balanced when using the drilling machine.
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 remove all adjustment tools before using the drilling machine.
● atmospheres, such as in the presence of flammable liquids, gases or dust. Power tools create sparks which may ignite the dust or fumes. Keep children and bystanders away while operating a power tool. Distractions can cause you to lose control. ● Avoid body contact with earthed or grounded surfaces, such as pipes, radiators, ranges and refrigerators. There is an increased risk of electric shock if your body is earthed or grounded.
when performing an operation where the cutting accessory may contact hidden wiring. Cutting accessory contacting a “live” wire may make exposed metal parts of the power tool “live” and could give the operator an electric shock. Drill safety warnings - Wear ear protectors when impact drilling. Exposure to noise can cause hearing loss. - Use auxiliary handle(s), if supplied with the tool. Loss of control can cause personal injury.
Use appropriate machine for the intended work. Do not use small machine and attachments for work to be handled by large machine. It may cause injury. ● Handle the battery charger cord gently. Do not carry the battery charger with the cord or do not unplug from the electric outlet by pulling the cord.
the Magnet and may cause the tool to swing around. Therefore the surfaces should always be kept clean and free from metal chips, bumps and depressions or rust. Also, do not place the Magnet over holes as this will also weaken the adhesion. ● Provide fall prevention using lashing belt. (Fig. 4).
● Do not discard the battery pack with normal garbage or place in fire. ● Keep the battery pack out of the reach of children. ● Use the battery pack properly following the indicated specifications. WARNING This machine is not water proof. Use the machine following the description below. ● Immediately wipe the electric drill or the machine when any liquid such as cutting fluid or water is applied. ● Do not operate with wet hand. ● Do not use in rain.
1 USAGE This is a machine tool which attaches magnetically to mild steel and uses the power of Drill Motor to drill holes with JETBROACH One-touch type or HI-BROACH One-touch Type. 2 CHECK THE CONTENTS OF THE PACKAGEKAGE Check the contents and make sure that the tool is not damaged due to an accident during the transportation, if any. The contents should correspond to the list as follows.
Vent Terminal Hook Terminal cover Battery Pack Battery Charger Indication lamp Vent Part for mounting the Battery Pack (Fig. 10) (Fig. 11) (Fig. 12) 4 ELECTRONIC CONTROL FUNCTIONS 4-1 Load Detection Function Functions below automatically perform when overload is generated at drilling. Load condition of the electric drill is indicated by turning on or blinking of LED.
Function name LED inidcation Description of function and countermeasure Magnet wire disconnection detection function Yellow The electric drill will not operate and LED blinks in yellow when abnormality is generated with the magnet. Request for repair to the sales agent where the product was purchased or to your nearest authorized Nitto dealer.
6 PREPARATIONS WARNING ● Turn the magnet switch off and detach the battery pack from the machine when preparing. 6-1 Attaching handle Ass’y 1. How to attach the handle Ass’y - Insert the sleeve of the handle Ass’y in the pinion shaft while the sleeve is pulled toward the handle. (Fig. 13) - After it is attached, check that the handle Ass’y will not be detached before use. * The handle Ass’y can be attached on either right or left of the machine. (Fig.
● Unspecified usage not only significantly reduces the life of the cutter but also damage the cutter and lead to unexpected accidents. 6-5 Preparaion of Chip Breakers WARNING Set the Chip Breaker so that the tips of the blade may not interfere with the cutter both at the top and bottom in setting up the Chip Breaker. ● Make sure that no gap is created between the magnet adhesion surface and work piece due to the force of blade applied to the work piece.
・May cause inflammation if it enters the eyes. Protective eye-wear should be used when handling to prevent entry into the eyes. ・Skin contact may cause inflammation. Protective gloves should be worn when handling to prevent contact with the skin. ・May cause discomfort if mist or vapor is inhaled. Breathing apparatus should be used when handling so that mist or vapor should not be inhaled. ・Dilution should be carried out in accordance with the Instruction Manuals. ・Keep it out of reach of children.
6-8 Attachment of Battery Pack (Fig. 22) WARNING ● ● Check that there is no cutting chips or water on the battery pack and machine before attaching the battery pack. Securely attach the battery pack. (1) Check that the magnet switch and electric drill switch are turned off. (2) Push the battery cover toward the main body. (3) Attach along the groove of the machine while pressing the hook of the battery pack.
6-9 Detachment of Battery Pack (Fig. 24) (1) Check that the magnet switch and electric drill switch are turned off. (2) Push the battery cover toward the main body. (3) Pull upward the battery pack while pressing the hook Battery Cover Hook (Fig. 24) 7 MACHINE OPERATION Remaining battery power indication WARNING ● ● ● ● ● Wear the safety goggle while working. If much dust is produced, wear a dust mask. Do not wear gloves.
(2) Make sure that both the magnet adhesion surface and the workpiece surface are clean. CAUTION (4) Magnet on CAUTION ● Check that the magnet is adhered. When energized, the magnet may exhibit a buzzing sound or a slight hum. If something is caught under the magnet, there is a danger that the machine may slide off. ● Gaps between the magnet adhesion surface and the workpiece weaken the magnetic holding power.
Feed slowly to 2 – 3 mm deep. stick, etc. since drilling operation cannot be continued when slug is unremoved. Feed slowly to 2∼3mm deep Pilot Pin Slug Fig. 29 (8-2) Final stage of drilling Cutter CAUTION Needle Stick Collar When drilling a hole in an angle, channel or H-section irons, etc., cutter may be damaged when it comes to the slanted part of the work piece on the final cutting stage. Feed slowly in its start and finish cutting. (Fig. 30) Slanted surface R Fig.
8 TROUBLESHOOTING WARNING ● ● Do not attempt to repair the tool by yourself. This will cause damage to the tool and danger to yourself when you use it again. If any of the following, or other symptoms occur, or if there are other matters concerning usage that you do not understand, please consult the sales agent from whom you purchased the tool or an authorized dealer. Various errors are indicated by LED with this machine in which the contents of error can be identified by the color of LED.
8 ∼ 9mm Carbon brush Brush cap Carbon brush (Fig. 36) (Fig. 41) (1) Remove the cross-head tapping screw3x12 with a Phillips head screwdriver and remove the motor cover. (Fig. 37) (4) Replace with a new carbon brush.(Fig. 42 and Fig. 43) *The direction of the carbon brush is specified. Align the pig tail with the groove of the brush holder when attaching. Philips head Screw driver Motor Cover Groove of the brush holder Groove of the brush holder Cross-head tapping screw 3×12 (Fig.
CAUTION ● Pay attention to prevent jamming (hooking) of the lead line (pig tail) with the brush holder when attaching a new carbon brush. (Fig. 46) 10 ORDERING SERVICE PARTS In ordering parts and components from the sales agent from whom you purchased the tool or an authorized dealer, give each part number, parts name and quantity required. 10-1 Genuine Cutting Oil CAUTION Use our Genuine Cutting Oil. Part No. Part Name TB01507 Water-soluble Cutting Oil 2ℓ (Light Blue) (Fig.
10-5 Ordering parts Jetbroach One-touch Type (metric sizes) Part No. Diameter × Depth (mm) TK01148 TK01149 TK01150 TK01151 TK01152 TK01153 TK00301 TK00302 TK00303 TK00304 TK00305 TK00306 TK00307 12 X 13 X 14 X 15 X 16 X 17 X 17.5 X 18 X 18.5 X 19 X 19.5 X 20 X 20.5 X PILOT PIN 25 25 25 25 25 25 35 35 35 35 35 35 35 C1 A2 Part No. TK00308 TK00309 TK00310 TK00311 TK00312 TK00313 TK00314 TK00315 TK00316 TK00317 TK00318 TK00319 Diameter × Depth (mm) 21 X 21.5 X 22 X 22.5 X 23 X 23.5 X 24 X 24.
12 ATRA ACE CLA-2720 ASSEMBLY WARNING This diagram is for reference only. Do not attempt to service or repair the Nitto Portable Magnetic Drilling Machine. Do not take the machine apart. Contact an authorized Nitto dealer for all service and repair of the machine. Improper service and repair can cause accidents and severe injuries. Never attempt to modify the machine. Never attempt to service or repair the machine yourself.
13 ATRA ACE CLA-2720 PARTS LIST The part numbers with ( No. Part No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 24 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 Y Packings NB-15X19X1 Push Ring Ass'y Pilot Spacer Spring 1.2X11X100 External Retaining Ring C- 28 Sleeve Rotating Spring Ball 5/16 (7.938) Arbor Parallel Key Both Ends Round TQ10570 4X4X12 TQ14114 Bearing Cover TP16155 Ball Bearing 6004LLB TQ14121 Oil Seal AG0994E1 TQ14095 Gear Case TQ14104 Rack TQ03329 Hex.
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