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INSTRUCTION
MANUAL
<Specifications>
Maximum Operating Pressure
Air Consumpion (No Load)
Rated Speed (No Load)
Size of Collet Chuck
Mass (Weight)
Sound Pressure Level *
Sound Power Level *
Vibration Level [Uncertainty K] *
Thread Size of Air Inlet
*1 Based on the ISO15744 measurement standard.
*2 Based on the 3 axes combined value measurement standard of the
ISO28927-12 of the hand-tool frequency correction vibration acceleration
effective value.
l Please read this manual carefully before you attempt to use your tool so that you may use it
l
properly and safely.
l Please keep the manual handy - so you can use it whenever necessary.
l
• Due to continuous product development/improvement the specifications and configurations in this
document are subject to change without prior notice.
Manufactured by:
NITTO KOHKI CO., LTD.
Professional Tool
Model: L-25B, L-35C, AL-55A
Model
MPa
3
m
/min
-1
min
mm
kg
1
dB(A)
1
dB(A)
2
2
m/s
9-4, Nakaikegami 2-chome, Ohta-ku, Tokyo, 146-8555, Japan
Tel : +81-3-3755-1111 Fax : +81-3-3753-8791
Pneumatic Die Grinder
L-25B
L-35C
AL-55A
0.6
0.4
0.35
0.17
27000
35500
56500
6
6
3
0.6
0.45
0.27
76
76
71
87
87
82
7.2 [4.6]
3.1 [0.8]
0.8 [0.6]
Rc1/4
Rc1/4
G1/4
TQ12790-5 07/2019
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Related Manuals for Nitto Kohki AIR SONIC L-25B
Summary of Contents for Nitto Kohki AIR SONIC L-25B
- Page 1 • Due to continuous product development/improvement the specifications and configurations in this document are subject to change without prior notice. Manufactured by: 9-4, Nakaikegami 2-chome, Ohta-ku, Tokyo, 146-8555, Japan NITTO KOHKI CO., LTD. Tel : +81-3-3755-1111 Fax : +81-3-3753-8791 TQ12790-5 07/2019...
-
Page 2: Table Of Contents
Instructions Thank you very much for your purchase of this NITTO KOHKI product. Before using your tool, 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. -
Page 3: Precautions On Use (Make Sure To Follow The Instructions Given)
Precautions on Use (Make sure to follow the instructions given) Before using your tool, to avoid personal injury always take the basic precautions explained in later sections. General Power Tool Safety Warnings Personal safety WARNING l Dress properly. Do not wear loose clothing or jewelry. There is a Protective hair Protective danger of being caught in moving parts. - Page 4 About Work Area WARNING l Do not use the tool at home. This is a professional tool (industrial or work tool for business). Do not bring the tool home and use it there. l Keep the work area clean. Working in a messy work area or work table could cause an accident. l Be cautious about the work area.
- Page 5 Handling tools WARNING l Storing the tool When the tool is not used, store the tool in a dry location. Also, store the tool out of the reach of children. For some tools, the storage temperature and humidity are specified. Store the tool in an appropriate location. l Be cautious about how the tool is carried.
- Page 6 This tool shall be inspected periodically to verify the ratings and markings. When a label/nameplate is damaged, worn or missing, contact the retailer where you purchased the tool or the nearest NITTO KOHKI's overseas affiliates/offices (see the back cover of this manual) directly for a replacement.
- Page 7 Projectile Hazards WARNING l Be aware that failure of the workpiece or accessories, or even of the inserted tool itself can generate high- velocity projectiles. l Always wear impact-resistant eye protection while operating this tool. The grade of protection required should be assessed for each operation.
- Page 8 Accessory Hazards WARNING l Disconnect the tool from the energy supply before fitting or changing the inserted tool or accessory. l Use only accessories and consumables that are the sizes and types recommended by the manufacturer of this tool; do not use accessories or consumables of other types or sizes. l Avoid direct contact with the inserted tool during and after use, as it can be hot or sharp.
- Page 9 Noise Hazards WARNING l Exposure to high noise levels can cause permanent, disabling hearing loss and other problems, such as tinnitus (ringing, buzzing, whistling or humming in the ears). Therefore, risk assessment and implementation of appropriate controls for these hazards are essential. l Appropriate controls to reduce the risk can include actions such as damping materials to prevent workpieces from “ringing”.
- Page 10 Product Specific Safety Rules The Word "attachment" in the sentences below refers to mounted wheels and rotary burrs. WARNING l Do not use an attachment with rated revolution speed (the number of revolutions marked on the package) less than the actual revolution speed of the Die Grinder. l Inspect attachment for chips or cracks prior to mounting.
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Page 11: Application
1 Application This is handheld Pneumatic die grinder for grinding workpieces using a mounted wheel or a rotary burr. 2 Checking Inside the Package When you open the package box, check the contents of the package and also check for any damage that may have occurred during transportation. - Page 12 AL-55A Package Contents Check Package Contents Check ① AL-55A Main Unit Instruction Manual (This ⑥ ② Document) Spanner 7×9 ⑦ ③ Declaration of Conformity Lock Wrench ⑧ ④ Caution for Use Mounted Wheel 5×13×3 ⑤ Bushing R1/4×NPT1/4 ② ③ ① ⑤...
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Page 13: Part Names
3 Part Names L-25B ① Mounted Wheel ⑥ ② Chuck Nut ⑤ ③ Lock Ring ④ ④ Housing ③ ⑤ Lock Lever ② ⑥ Throttle Lever ⑦ ⑦ Air Hose ① ⑧ Hose Nipple ⑧ L-35C ① Mounted Wheel ⑥ ②... -
Page 14: Air Supply
4 Air Supply CAUTION l Remove drainage before stating work. When drainage enters the tool, the vicinity of the exhaust port freezes, which could cause a loss of power. ① ① Compressor ② Air Filter ② ③ Air Regulator ③ ④... -
Page 15: Preparation
5 Preparation WARNING l Do not use any attachment for which the operating speed is lower than the actual free speed of the grinder. l The attachment mandrel shall be inserted to the full depth of the gripping jaws of the grinder chuck. Attachments Selecting Attachments The maximum speed of an attachment is determined by the factors listed below. -
Page 16: Mounting And Removing Mounted Wheels And Rotary Burrs
Rotary Burr Attachment l Squeeze the Rotary Burr lightly against the face to be ground and feed the Rotary Burr in the right-to-left direction. l Using a double-cut Rotary Burr is recommended. l Insert the Rotary Burr as deepest as possible and fastened. l For L-25B, L-35C Use the blade section not more than 10 mm in diameter. - Page 17 For L-35C l Mounting Hold the body of the chuck with a Spanner 14 ( ③ ) and insert the Rotary Burr ( ⑤ ) mandrel ( ④ ). Secure the Rotary Burr ( ⑤ ) by turning the Chuck Nut ( ① ) with another Spanner 14 ( ③ ) in a clockwise direction. l Removal Turn the Chuck Nut ( ①...
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Page 18: How To Operate The Tool
6 How to Operate the Tool WARNING l Always wear eye protection during operations. l Start the equipment. Then squeeze the equipment lightly against the workpiece and move AIR SONIC in the direction of the arrow, as shown in Fig. l Strong push against the workpiece will not improve working efficiency. -
Page 19: Adjust Valve
Adjust Valve WARNING l Be sure to keep hands clear of moving parts. For L-25B, L-35C The desired speed between maximum and minimum speed is obtainable by turning the groove of valve in a clockwise or counterclockwise direction with screwdriver. l Maximum speed Maximum Position the groove of Adjust Valve ( ①... -
Page 20: Optional Parts
9 Optional Parts L-25B Part No. Description TA9A277 Mounted Wheel No.1 5 pcs TA9A278 Mounted Wheel No.2 5 pcs TA9A279 Mounted Wheel No.3 5 pcs TA9A280 Mounted Wheel No.4 5 pcs TA9A281 Mounted Wheel No.5 5 pcs TA9A282 Mounted Wheel No.6 5 pcs TA9A283 Mounted Wheel No.7...
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