Nitto AJC-16, JT-20, JC-16, JEX-20, JEX-24 Instruction Manual

PNEUMATIC NEEDLE SCALER

Please read this manual carefully before you attempt to use
your tool so that you may use it properly and safely.

JET CHISEL

Model AJC-16, JC-16, JT-20, JEX-20, JEX-24 JEX-28, JEX-2800A
PROFESSIONAL TOOL

Model

JEX-20

Model

AJC-16

Model

JEX-24

Model

JC-16

Model

JEX-28

Model

JT-20

Model

JEX-2800A

Specications

Model AJC-16 JC-16 JT-20 JEX-20 JEX-24 JEX-28 JEX-2800A

Maximum Operating Pressure MPa 0.6
Air Consumption (No Load) m3/min 0.07 0.15 0.2 0.2 0.27 0.35 0.43
Stroke Speed (No Load) min
Sound Pressure Level (Load) dB(A) 88 90 92 93 93 95 95
Sound Power Level (Load) dB(A) 99 101 103 104 104 106 106
Vibration Level (Load) m/s
Mass (Weight) kg 0.98 1.4 2.4 2.75 2.7 3.5 3.3
Thread Size of Air Inlet Rc3/8

-1

6000 4000 4000 4000 4000 4500 3700

2

7.9 3.8 6.6 3.3 6.2 12.1 7.2

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.

2-9-4, Nakaikegami, Ohta-ku,
Tokyo, 146-8555, Japan
TEL : [phone]
FAX : [phone]
E-mail : [e-mail]
URL : www.nitto-kohki.co.jp

Keep the manual handy – so you can use it whenever necessary.

Original Instructions

JET CHISEL.indd 1 11.2.18 2:12:20 PM

1

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.

・

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.

・

: Per Manuale Istruzioni in lingua

Italian

locale Vi preghiamo di rivolgervi
al rivenditore o distributore.

・

: Vraag uw handelaar

Dutch

om een nederladstalige
gebruiksaanwijzing.

CONTENTS page

IMPORTANT SAFETY INSTRUCTIONS …………………… 2
GENERAL: TOOLS …………………………………………… 2
GENERAL: PNEUMATIC TOOLS …………………………3
INSTRUCTIONS FOR THIS TOOL ………………………… 4

1. USAGE ……………………………………………………4

2. CHECK THE CONTENTS OF THE PACKAGE ……… 4

3. AIR SUPPLY ……………………………………………… 5

4. HOW TO OPERATE THE TOOL ……………………… 5

5. CHANGING NEEDLES ………………………………… 6

6. THREAD SIZE OF HOSE FITTING ……………………7

7. STORAGE ………………………………………………… 7

8. OPTIONAL PARTS ………………………………………8

9. ORDERING SERVICE PARTS …………………………8

10. EXPLODED DIAGRAM : AJC-16 ………………………9

11. EXPLODED DIAGRAM : JC-16 ……………………… 10

12. EXPLODED DIAGRAM : JT-20 ……………………… 11

13. EXPLODED DIAGRAM : JEC-20 …………………… 12

14. EXPLODED DIAGRAM : JEX-24 …………………… 13

15. EXPLODED DIAGRAM : JEX-28 …………………… 14

16. EXPLODED DIAGRAM : JEX-2800A ……………… 15

PICTOGRAM

Warning: It might be dangerous to operate the tool if

the instructions supplied are not followed.

Using this tool improperly could result in serious injury.

Read the instruction manual before use.

Always wear suitable eye protection.

When using the tool, please observe the safety
precautions below to prevent possible accident or injury.

●

●

●

●

●

●

・

Swedish

: Be er lokala Åtreförsäljare eller

distributör om manualer pá

Always wear suitable hearing protection.

svenska.

・

Danish

: Venligst henvend Dem til den

Always wear respiratory protective equipment (PPE).

danske distributør for instructions

・

Polish

manualer.

: Prosze pytac swojego dealera

Always wear protective gloves for protection of hands

from vibration and shock.

lub dystrybutora o instrukcje
obslugi w jezyku localnym.

・

中文 :請向當地供應商或経銷商詢問中

文使用説明書

The following Safety notations are used throughout the manual to highlight safety precautions for the user and for
the tool.

Indicates a potentially hazardous situation which, if not avoided by following the

Warning:

instructions given, could result in death or serious injury.
Indicates a potentially hazardous situation which, if not avoided by following the

Caution:

Please note, however, that failure to observe safety precautions under the “

instructions given, could result in injury or material damage.

Caution

” category could result in a

serious occurrence depending on the situation: please observe all safety precautions in the manual.

Caution:

Important precautions for tool setup, operation and maintenance.

●

●

●

●

●

●

JET CHISEL.indd 1 11.2.18 2:12:21 PM

2

IMPORTANT SAFETY

INSTRUCTIONS

When using the tool, please observe the safety
precautions below to prevent possible accident or injury.

GENERAL: TOOLS

WARNING

TO OPERATORS

●

Wear proper clothing for the type of work being

done.

Take care so that clothing, ties, hair, etc. will not
become entangled with the moving parts. If items
become entangled it will cause the operator to be
pulled towards the tool and lead to possible cause of
accident or injury.

●

Always wear suitable eye protection.

Remember, regular glasses are not safety glasses.
The lenses are only shock resistant, which will not
give you sufficient eye protection you may need in
your working environment.

●

Always wear suitable hearing protection.

●

Wear respiratory protective equipment (PPE).

Wear respiratory protective equipment (PPE) when
working in an environment where dust particles are
generated in operation.

●

Always wear suitable protective gloves.

●

Avoid working posture that is too stressful.

Always ensure a firm footing and well balanced
posture.

●

Do not operate the tool if you are too tired.

●

Never touch any moving parts of the tool when

running.

ABOUT WORK AREA

●

Keep the work area clean.

Cluttered work areas (e.g. workbench) invite
accidents.

●

Carefully select the work area.

Do not expose tool to rain.
Do not use tool in a wet or soaked area.
See that the work area is adequately illuminated.

●

Never work n ear i nflammabl e liquid or in a

potentially explosive atmosphere.

●

Keep children away from the work area.

Keep children and unauthorized people away from
the work area to avoid accident or injury.

BEFORE OPERATION

●

Inspect tool before use.

Before using, check that screws are securely
tightened, that any protective cover or guard is
securely in place, other parts are free from damage
and that the tool runs as it should.
Check that moving parts are properly adjusted for
positioning and tightened, that parts are free from
damage and properly mounted, and that all other
parts are in good condition for normal operation.
Should you find any damage to the protective
cover or other part, replace it in accordance with
the Operation Manual. If there are no instructions
in the Manual, please contact the sales agent
through which you have purchased your tool or an
authorized dealer near you for repair.
Likewise, if a switch failure occurs, contact sales
agent through which you have purchased your tool
or an authorized dealer near you for repair.
Do not use the tool if it does not start or stop with
the start/stop switch.

●

Securely mount cutter

An improperly mounted cutter may y out, causing

possible damage to the tool or injury to the operator.

●

Always remove spanner, wrench, etc., once

adjustment has been made with them.

●

Use a tool appropriate for the application.

Avoid heavy-duty application that is beyond the
capacity of tool.

●

Do not use the tool for purposes other than what

it is designed for.

●

Do not abuse tool.

Use tool in accordance with the specications: you’ll

get the most out of it while ensuring safety.

●

Securely fasten workpiece in place.

Use a vice or clamp to securely fasten the workpiece
in place. It is much safer this way than holding it in
your hand, allowing you to operate the tool with both
hands.

ABOUT HANDLING

●

How to store tool.

When the tool is not used, store it in a dry area and
out of reach of children.

●

How to carry tool.

Do not touch the start switch while the tool is being
carried.

●

Do not leave the tool unattended while it is

running.

Turn off the start switch and disconnect the tool from

JET CHISEL.indd 2 11.2.18 2:12:22 PM

3

power source. Do not leave the work area until the
tool comes to a complete stop.

GENERAL: PNEUMATIC

TOOLS

MAINTENANCE/SERVICE

●

Do not take apart or modify tool.

Disassembly or modification carried out without

the supervision of a qualied or authorized service

engineer could result in an accident or injury.

●

Inspect cutting tool and accessories, etc.

Alwa ys c he ck to see tha t cut ti ng tool and
accessories, etc. are in good operating condition
without damage or deterioration before you mount
them on the tool. Should you find any damage to
an accessory or part, please contact sales agent
through which you have purchased your tool or an
authorized dealer near you for repair.

●

Check parts for damage.

When you have found damage to accessory or other
part, carefully check the damaged part to determine
the extent of influence it has upon the functions
of the tool – that is, determine whether it can still
perform its normal functions.
Check to see that the linkage of the moving parts
is OK, that all parts are OK without damage,
that they are properly mounted, and that the tool
functions normally. Should you find any damage
to an accessory or part that may hamper proper
functioning of the tool, please contact sales agent
through which you have purchased your tool or an
authorized dealer near you for repair.

●

Have your tool repaired at an authorized Nitto

Service Center.

For repair or parts replacement, please contact the
sales agent through which you have purchased your
tool or an authorized dealer near you.

●

Use only Nitto genuine parts.

Use of improper parts may result in serious accident.
To obtain a Nitto genuine part, consult this Manual
or contact the sales agent from which you have
purchased your tool directly.

●

Do not detach label or nameplate from tool.

When a label/nameplate gets damaged, worn or
becomes missing, contact the sales agent through
which you have purchased your tool or Nitto Kohki
Co. Ltd, directly for a replacement.

WARNING

●

Use appropriate air pressure.

Excessively high air pressure will increase the tool
number of revolutions or strokes causing not only
potential premature failure/breakage but could also
lead to an unexpected accident or injury.

●

Connect tool to air supply line.

There are various types of pipes running in a factory
in addition to the pneumatic line (such as oxygen,
nitrogen, gas and water). For this reason, always
ensure that you are connecting to the pneumatic
line.

●

Start tool properly.

Turn the start switch OFF before connecting to the
air supply line.

●

Always disconnect the tool from the air supply

line before putting on/taking off any accessory
and prior to carrying out any maintenance work.

●

Avoid exposure to exhaust air.

Pneumatic tool ex haust air con tains oil and
contaminated moisture. Make sure the exhaust air is
not directed towards your face or anyone else within
the work area.

●

Keep tool off electricity.

This pneumatic tool is not electrically insulated. To
avoid a potential electric shock do not use where
there is a possibility of coming into contact with live
electricity.

CAUTION

●

Handle tool carefully.

Abusive use of tool could invite failure or accident.
Do not throw, drop or shock the tool.

●

Handle air hose carefully.

Do not carry the tool by the air hose.
Do not pull the air hose to disconnect.

●

●

●

●

●

●

●

●

●

DISPOSAL

When a tool is taken permanently out of service, it is
advised that the tool is disassembled, degreased and
parts separated by material and recycled locally in the
appropriate manner.

JET CHISEL.indd 3 11.2.18 2:12:22 PM

Check the contents and make sure that the tool does
not have any damage which may have occurred
during transportation. The contents should correspond
to the list as follows. In case of damage/missing
parts, please contact the sales agent from whom you
purchased the tool.

4

INSTRUCTIONS

FOR

THIS TOOL

About Your Tool

WARNING

●

Wear protective glasses and a dustproof mask.

Operation generates chips and dust particles, etc.
which may cause eye and / or respiratory injury:
Always use PPE (Personal Protective Equipment)
for eye and respiratory protection.

●

Wear vibration reducing and shock absorbing

gloves.

This is a power tool utilizing vibration. Wear vibration
reducing and shock absorbing gloves. When your
hands, fingers, arms, etc. feel discomfort during
operations, immediately stop your work. Long hour
operation should be prohibited, for it may cause
Vibration-induced disorder.

●

Always wear suitable hearing protection.

The tool generates loud noise. Always use ear plugs
for hearing protection. Take necessary measures to
comply with the local regulatory requirements and
laws with regard to noise level, or do better.

●

Do not operate tool at no Ioad.

Do not operate the tool at no load: It may not only
Cause damage to the tool but also may cause

Needles to fracture and y out, possibly resulting in

unexpected accident.

1. USAGE

●

Remove slag and spatter from welding.

●

Perform shot peening after welding.

●

Remove rust, paint, cast sand from irregular metal
surface.

●

Peel off adhered concrete. Clean brick surfaces and
stone structures.

●

The tool is used for operations in the difficult-to­operate areas where no other tool would be feasible :

in narrow difcult-to-reach areas, extremely irregular

surfaces, and grooves, cracks and other exterior
surfaces without containers, etc.

2. CHECK THE CONTENTS OF THE PACKAGE

Check the contents and make sure that the tool does
not have any damage which may have occurred
during transportation. The contents should correspond
to the list as follows. In case of damage/missing
parts, please contact the sales agent from whom you
purchased the tool.

AJC-16

Package Contents Qty Check

AJC-16 1set
O.D.3×180mm;(on tool) 3
O.D.3×180mm 3
Bushing R3/8×NPT3/8 1
Hose Nipple R3/8×3/8 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1

JC-16

Package Contents Qty Check

JC-16 1set
Needle O.D.2×150mm;(on tool) 29
Needle O.D.2×150mm 29
Bushing R3/8×NPT3/8 1
Hose Nipple R3/8×3/8 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1

JT-20

Package Contents Qty Check

JT-20 1set
Needle O.D.3×180mm;(on tool) 12
Needle O.D.3×180mm 12
Bushing R3/8×NPT3/8 1
Hose Nipple R3/8×3/8 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1

JEX-20

Package Contents Qty Check

JEX-20 1set
Needle O.D.3×180mm;(on tool) 12
Needle O.D.3×180mm 12
Bushing R3/8×NPT3/8 1
Hose Nipple R3/8×3/8 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1

JEX-24

Package Contents Qty Check

JEX-24 1set
Needle O.D.3×180mm;(on tool) 23
Hex. Socket Screw Key 6 1
Bushing R3/8×NPT3/8 1
Hose Nipple R3/8×3/8 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1

JET CHISEL.indd 4 11.2.18 2:12:23 PM

5

JEX-28

Air Regulator

Oiler

Air Filter

Compressor

Lubrication

Tool

9.5mm (3/8”) I.D.
Hose

Cupla

Throttle Lever

JC-16, JEX-24,
JEX-28, JEX-2800A

Throttle Lever

AJC-16, JT-20, JEX-20

   

   

Package Contents Qty Check

JEX-28 1set
Needle O.D.3×180mm;(on tool) 28
Needle O.D.4×180mm 14
Needle Supporter O.D.4 1
Hex. Socket Screw Key 6 1
Bushing R3/8×NPT3/8 1
Hose Nipple R3/8×3/8 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1

JEX-2800A

Package Contents Qty Check

JEX-2800A 1set
Needle O.D.3×180mm;(on tool) 28
Needle O.D.4×180mm 14
Needle Supporter O.D.4 1
Bushing R3/8×NPT3/8 1
Hose Nipple R3/8×3/8 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1

3-3. Lubrication

Install an oiler between the compressor and the tool.
Use the machine oil ISO VG-10. Failure to lubricate
as required may result in damage to the tool. Use of
oil that is too thick will reduce the performance of the
tool.

3-4. Short hose ttings

Do not x a coupling directly on the tool. Make sure
that after a short hose is xed with the Hose Nipple

R3/8X3/8 including in the accessories, then the

coupling be attached. If the coupling is directly xed,

it would be damaged by the vibration and the life
would be shortened.

4. HOW TO OPERATE THE TOOL

WARNING

●

Do not operate tool at no load. Do not operate the
tool at no load: It may not only cause damage to the

tool but also may cause needles to fracture and y

out, possibly resulting in unexpected accident.

4-3. Needle for JET CHISEL

3. AIR SUPPLY

3-1. Air Pressure

Adjust air pressure with the air regulator to the
appropriate level for the pneumatic tool used.
Air pressure that is too low will stop the tool from
operating at full capacity.
Air pressure that is too high may cause damage to
the tool.

3-2. Air Line

Use a 9.5 mm (3/8”) I.D. connecting hose between
the compressor and the tool. Drained water, etc., if

own into the tool, could cause tool failure. Install an
air lter between the compressor and the tool.

(Fig.1)

Fig. 1

4-1. Start and Stop

(1) Check that a Throttle Lever is turned off and

connecting the tool to the hose Ieading to air
supply Iine.

(2) Hold the tool and turn on the Throttle Lever to

Start.

(3) When the Throttle Lever is released, it will

automatically turn off.

Fig. 2 Fig. 3

4-2. Operation

You do not have to press the Needles against the
workpiece with much force. Keep the Needle in
contact with the work surface and apply force as
if you were just trying to maintain solid contact
between the Needles and workpiece. Too much
force, if applied, could result in damage to the
Needles, such as bending and / or breakage,
or even damage to the tool itself. The Needles
will closely follow any kind of configurations the
workpjece surfaces may have, making it possible to
get the work done with ease, speed and accuracy.

Caution:

Before changing Needles, turn off the Throttle Lever
and disconnect the air supply line.

5-1. JC-16, JT-20, JEX-20, AJC-16

JET CHISEL.indd 5 11.2.18 2:12:26 PM

6

   

   

(3) Take out the Needle Supporter by pulling out the

Needle

Needles.

Fig. 4

4-3. Needle for JET CHISEL

Three types of Needles are available for JET
CHISEL: i.e. 2, 3 and 4mm outer diameter (O.D.).
The table below shows the Needles that are
compatible with each model. Use these needles in
accordance with your applications. (Note: represents
diameter.)

Model O.D.2 O.D.3 O.D.4

AJC-16 7pcs 3pcs -

JC-16 29pcs - -

JT-20 29pcs 12pcs ­JEX-20 29pcs 12pcs ­JEX-24 53pcs 23pcs ­JEX-28 66pcs 28pcs 14pcs

JEX-2800A 66pcs 28pcs 14pcs

Caution:

The Needle Supporter that matches with the

needle diameter is additionally required.

5. CHANGING NEEDLES

WARNING

Fig. 6

(4) Extract the Needles. Whenever the Needles

are damaged during operation, they must be
changed.

(5) After changing Needles, assemble in the reverse

manner of disassembly.

Caution

Changing the Needle of AJC-16

The Needle is consumable parts, however, since
AJC -16 consists of 3 pieces of Needles, even if one
piece has been damaged, the Needle should be
changed or replenished.
In this case set them after making the lengths of
three Needles almost even through using grinders
etc.

5-2. JEX-24

(1) Unfasten the Hex. Socket Head Cap Screw 8x35

using the Hex. Wrench Key 6 and pull out the
Needle Guide.

Before changing Needles, turn off the Throttle Lever
and disconnect the air supply line.

5-1. JC-16, JT-20, JEX-20, AJC-16

(1) Remove the Lock Band from the groove.
(2) Loosen the Lock Ring and remove.

JT-20, JEX-20, AJC-16

Fig.5

Fig. 7

(2) Loosen the Lock Ring and remove.
(3) Take out the Needle Supporter by pulling out the

Needles.

JET CHISEL.indd 6 11.2.18 2:12:28 PM

7

Fig. 8

Needle Guide

Needle

&ODPS6SULQJ&ODPS/HYHU

1HHGOH6XSSRUWHU

/RFN5LQJ

6QDS5LQJ

5LQJ

(4) Extract the Needles. Whenever the Needles are

damaged during operation, they must be changed.

(5) After changing Needles, assemble in the reverse

manner of disassembly.

5-3. JEX-28

(1) Unfasten the Hex. Socket Head Cap Screw 8X24

of the Needle Guide with the Hex. Socket Screw
Key 6 and pull out the Needle Guide.

Fig. 9

We can Supply 2, 3 and 4mm diameter Needles for
JET CHISEL.
Change Needles according to the type of your work.

Fig. 11

(2) Remove the Snap Ring by pinching the projected

hooks.

(3) Then you can take off the Needle Supporter

together with other parts by pulling out the edge
of Needles. (Fig. 12)

(2) Remove the Lock Band from the groove.
(3) Loosen the Lock Ring and remove. Take out the

Needle Supporter by pulling out the Needles.

Fig. 10

(4) Extract the Needles. Whenever the Needles are

damaged during operation, the Needles must be
changed.

(5) After changing Needles, assemble in the reverse

manner of disassembly.

5-4. JEX-2800A

(1) To disassemble Needle Guide Ass’y, pull up

the Clamp Lever and remove the Clamp Spring
from the hook on the Guide. Take out the Needle
Guide from the tool body. (Fig .11)

Fig. 12

(4) After changing with new Needles, reverse

assembly procedure.

Caution :

When you assemble the Snap Ring,

make sure it fits into the slot on the
Cylinder.

6. THREAD SIZE OF HOSE FITTING

The product comes with a metal tting with Rc (metric)

thread. Connect the Bushing R thread x NPT thread
included as standard accessories, if you would like to
have American NPT thread instead.

7. STORAGE

CAUTION

●

When tool is not used, store it out of children.

Avoid storing the tool in a location subject to high
humidity. If the tool is left as it is used, residual
moisture on the inside can cause rusting. Before
storing, and after operation,
oil the tool at the air inlet with machine oil ISO
VG-10 and run it for a short time.

For further operational and handling information or
for replacement of parts and components, contact the
company from whom you purchased the tool or an
authorized dealer. In ordering parts and components
give each part number, part name and quantity
required. Use only NITTO genuine parts.

JET CHISEL.indd 7 11.2.18 2:12:31 PM

8

8. OPTIONAL PARTS

We can Supply 2, 3 and 4mm diameter Needles for
JET CHISEL.
Change Needles according to the type of your work.

Part No. Description Qty Model

TA98780

TA98781

TA9A213

TA9A214

TA98782

TA9A216

TA9A217

TA9A218

TA98782

TA98783

TA9A220

TA9A221

TP00338

TP02244

TP01499

TQ05210

Ne e d l es O. D .2×
150mm

Ne e d l es O. D .2×
180mm

Ne e d l es O. D .2×
300mm

Ne e d l es O. D .2×
500mm

Ne e d l es O. D .3×
180mm

Ne e d l es O. D .3×
300mm

Ne e d l es O. D .3×
500mm

Ne e d l es O. D .3×
800mm

Ne e d l es O. D .3×
180mm

Ne e d l es O. D .4×
180mm

Ne e d l es O. D .4×
300mm

Ne e d l es O. D .4×
500mm

Needle Supporter
O.D.2

Needle Supporter
O.D.2

Needle Supporter
O.D.2

Needle Supporter
O.D.2

100pcs JC-16,AJC-16

100pcs

50pcs JT-20,

50pcs JEX-20,

100pcs JEX-24,

50pcs JEX-28,

50pcs JEX-2800A

50pcs

100pcs AJC-16

50pcs

JEX-28,

50pcs

JEX-2800A

50pcs

1 JT-20,JEX-20

1 JEX-24

1

JEX-28,

JEX-2800A

1 AJC-16

9. ORDERING SERVICE PARTS

For further operational and handling information or
for replacement of parts and components, contact the
company from whom you purchased the tool or an
authorized dealer. In ordering parts and components
give each part number, part name and quantity
required. Use only NITTO genuine parts.

JET CHISEL.indd 8 11.2.18 2:12:32 PM

9

10. EXPLODED DIAGRAM : AJC-16

WARNING

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attempt service or repair the Tool yourself.

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attemt service or repair the Tool yourself.

The part numbers with ( ) are included in the Ass'y parts written above them.

No. Part No. Description Qty Price

1 TQ04558 Lock Ring 1
2 TQ04559 Mufer 1
3 TQ03429 Lock Band 1
4 CP01453 O-Ring P-22A 1
5 TQ04554 Needle Supporter O.D.3 1
6 — Needle O.D.3×180mm 3
7 TQ04562 Throttle Anvil 1
8 TQ04557 Lock Nut 1
9 TQ04556 Urethane Washer 30×34×6 2

10 TB08708 Cover Ass'y 1set

11 (TQ12689) Label Warning 1
12 TQ04563 Cylinder 1
13 TQ03427 Piston 1
14 TQ04553 End Plate 1
15 TP13275 O-Ring P-16 1
16 TQ04564 Cushion 1
17 TQ04966 Valve Body 1
18 TB03778 Lever Ass'y 1set

No. Part No. Description Qty Price

19 (TP00460) Spring Pin 3×22AW 1
20 TA93070 Valve Stem Ass'y 1set
21 TP06325 Adjust Valve 1
22 TP11997 O-Ring KS-7 1
23 TP06326 Spacer 6×12×1.2 1
24 TP03695 Internal Retaining Ring C-12 1
25 TQ04929 Filter 1
26 TQ02349 Bushing M16×Rc3/8 1
27 TQ05564 Washer 16.2×21×1 1

Accessories

No. Part No. Description Qty Price

— Needle O.D.3×180mm 3
TQ02350 Bushing R3/8×NPT3/8 1
TQ03262 Hose Nipple R3/8×3/8 1
TQ12717 Instruction Manual 1
TQ12718 Declaration of Conformity 1

JET CHISEL.indd 9 11.2.18 2:12:34 PM

10

11. EXPLODED DIAGRAM : JC-16

WARNING

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attemt service or repair the Tool yourself.

The part numbers with ( ) are included in the Ass'y parts written above them.

No. Part No. Description Qty Price

1 — Needle O.D.2×150mm 29
2 TP00290 Needle Supporter O.D.2 1
3 TP00289 Throttle Anvil 1
4 TP00288 Piston 1
5 TP00287 Cylinder 1
6 TP00292 Lock Ring 1
7 TP11987 O-Ring KS-24 1
8 TP00295 Lock Band 1

9 TB08709 Housing Sub Ass'y 1set
19 (TQ12611) Label Warning CE Mark 1
10 TP11986 O-Ring KS-19 1

11 TP03336 Rear Washer 1
12 TB08710 Rear Bolt Ass'y 1set
20 (TQ12687) Label Warning 1

JET CHISEL.indd 10 11.2.18 2:12:36 PM

No. Part No. Description Qty Price

13 TP00389 Valve Cap 1
14 TP00388 Valve Packing 1
15 TA90037 Throttle Valve Ass'y 1set
16 TB00426 Throttle Lever Ass'y 1set
17 (TQ00563) Spring Pin 3×20 1
18 TQ02349 Bushing M16×Rc3/8 1

Accessories

No. Part No. Description Qty Price

— Needle O.D.2×150mm 29
TQ02350 Bushing R3/8×NPT3/8 1
TQ03262 Hose Nipple R3/8×3/8 1
TQ12717 Instruction Manual 1
TQ12718 Declaration of Conformity 1

11

19

9

12. EXPLODED DIAGRAM : JT-20

WARNING

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attempt service or repair the Tool yourself.

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attempt service or repair the Tool yourself.

The part numbers with ( ) are included in the Ass'y parts written above them.

No. Part No. Description Qty Price

1 TP14689 Lock Ring 1
2 TP00337 Needle Supporter O.D.3 1
3 — Needle O.D.3×180mm 12
4 TP00336 Throttle Anvil 1
5 TP14593 Lock Band 1
6 TA99176 Cylinder Ass'y 1set
7 TP00332 Piston 1
8 TP15020 Stopper 1

9 TB08850 Cover Ass'y 1set
19 (TQ12995) Label Warning CE Mark 1
10 LP12795 O-Ring G-30 1

11 TP15230 Valve Body 1
12 TA96324 Throttle Lever Ass'y 1set
13 (TP00327) Spring Pin 3×25 1

JET CHISEL.indd 11 11.2.18 2:12:38 PM

No. Part No. Description Qty Price

14 TA98983 Throttle Valve Ass'y 1set
15 TP14601 Valve Cap 1
16 TP14604 O-Ring S-10 1
17 TP03695 Internal Retaining Ring C-12 1
18 TQ02349 Bushing M16×Rc3/8 1

Accessories

No. Part No. Description Qty Price

— Needle O.D.3×180mm 12
TQ02350 Bushing R3/8×NPT3/8 1
TQ03262 Hose Nipple R3/8×3/8 1
TQ12717 Instruction Manual 1
TQ12718 Declaration of Conformity 1

12

23

24

13. EXPLODED DIAGRAM : JEX-20

WARNING

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attempt service or repair the Tool yourself.

The part numbers with ( ) are included in the Ass'y parts written above them.

No. Part No. Description Qty Price

1 TP14689 Lock Ring 1
2 TP00337 Needle Supporter O.D.3 1
3 — Needle O.D.3×180mm 12
4 TP00336 Throttle Anvil 1
5 TP14593 Lock Band 1
6 TA99176 Cylinder Ass'y 1set
7 TP00332 Piston 1
8 TP14594 Spring 2.2×40.5×34 2

9 TP14595 Stopper 1
10 TB08713 Cover Sub Ass'y 1set
23 (TQ12611) Label Warning CE Mark 1
24 (TQ12690) Label Warning 1

11 TP14599 Level Pin 2
12 LP12795 O-Ring G-30 1
13 TP15229 Valve Body 1
14 TP14597 Throttle Lever 1

JET CHISEL.indd 12 11.2.18 2:12:40 PM

No. Part No. Description Qty Price

15 TA98982 Throttle Lever Ass'y 1set
16 (TP01921) Spring Pin 3×18 1
17 TA98983 Throttle Valve Ass'y 1set
18 TP14601 Valve Cap 1
19 TP14604 O-Ring S-10 1
20 TP03695 Internal Retaining Ring C-12 1
21 TP02853 Retaining Ring E-4 2
22 TQ02349 Bushing M16×Rc3/8 1

Accessories

No. Part No. Description Qty Price

— Needle O.D.3×180mm 12
TQ02350 Bushing R3/8×NPT3/8 1
TQ03262 Hose Nipple R3/8×3/8 1
TQ12717 Instruction Manual 1
TQ12718 Declaration of Conformity 1

13

14. EXPLODED DIAGRAM : JEX-24

WARNING

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attempt service or repair the Tool yourself.

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attempt service or repair the Tool yourself.

The part numbers with ( ) are included in the Ass'y parts written above them.

No. Part No. Description Qty Price

1 TP02241 Cylinder 1
2 TP11992 O-Ring KS-9 1
3 TP02250 Front Washer 1
4 TB08714 Housing Sub Ass'y 1set

22 (TQ12611) Label Warning CE Mark 1

5 TP01478 Cylinder Lock Pin 1
6 TP02242 Piston 1
7 TP02249 Rear Washer 1
8 TB08715 Rear Bolt Ass'y 1

23 (TQ12687) Label Warning 1

9 TP00389 Valve Cap 1

10 TP00388 Valve Packing 1

11 TA90037 Throttle Valve Ass'y 1set
12 TB00427 Throttle Lever Ass'y 1set
13 (TQ00563) Spring Pin 3×20 1
14 — Needle O.D.3×180mm 23

JET CHISEL.indd 13 11.2.18 2:12:42 PM

No. Part No. Description Qty Price

15 TA93189 Needle Guide Ass'y 1set
16 (TQ01484) Small Hex. Nut M8 1

17 (TP16284)
18 TP02246 Lock Ring 1

19 TP02245 Needle Supporter O.D.3 1
20 TP02243 Throttle Anvil 1
21 TQ02349 Bushing M16×Rc3/8 1

Accessories

No. Part No. Description Qty Price

TP00170 Hex. Socket Screw Key 6 1
TQ02350 Bushing R3/8×NPT3/8 1
TQ03262 Hose Nipple R3/8×3/8 1
TQ12717 Instruction Manual 1
TQ12718 Declaration of Conformity 1

Hex. Socket Head Cap
Screw 8×45

1

14

15. EXPLODED DIAGRAM : JEX-28

WARNING

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attempt service or repair the Tool yourself.

The part numbers with ( ) are included in the Ass'y parts written above them.

No. Part No. Description Qty Price

1 TA93365 Round Needle Guide Ass'y 1set
2 (TP00045)
3 TP01464 Lock Ring 1

4 TP01461 Needle Supporter O.D.3 1
5 — Needle O.D.3×180mm 28
6 TP00399 Throttle Anvil 1
7 TP00395 Piston 1
8 TP01466 Lock Band 1
9 TP01463 Cylinder 1

10 TP11993 O-Ring AS568A-226 2

11 TP01474 Front Washer 1
12 TB08717 Rear Bolt Ass'y 1set
22 (TQ12688) Label Warning 1
13 TP01475 Rear Washer 1
14 TP01478 Cylinder Lock Pin 1
15 TP00389 Valve Cap 1
16 TP00388 Valve Packing 1

Hex. Socket Head Cap
Screw 8×25

1

No. Part No. Description Qty Price

17 TA90037 Throttle Valve Ass'y 1set
18 TB08716 Housing Sub Ass'y 1set
23 (TP01471) Name Plate 1
24 (TQ12611) Label Warning CE Mark 1
19 TB00427 Throttle Lever Ass'y 1set
20 (TQ00563) Spring Pin 3×20 1
21 TQ02349 Bushing M16×Rc3/8 1

Accessories

No. Part No. Description Qty Price

— Needle O.D.4×180mm 14
TP01462 Needle Supporter O.D.4 1
TP00170 Hex. Socket Screw Key 6 1
TQ02350 Bushing R3/8×NPT3/8 1
TQ03262 Hose Nipple R3/8×3/8 1
TQ12717 Instruction Manual 1
TQ12718 Declaration of Conformity 1

JET CHISEL.indd 14 11.2.18 2:12:44 PM

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16. EXPLODED DIAGRAM : JEX-2800A

WARNING

This diagram is for your reference only. Do not attempt to service or repair the Tool.
Do not take the Tool apart. Contact an authorized Nitto dealer for all service and repair of the Tool.
Improper service and repair can cause accidents and service injuries.
Never attempt to modify the Tool. Never attempt service or repair the Tool yourself.

The part numbers with ( ) are included in the Ass'y parts written above them.

No. Part No. Description Qty Price

1 TB05957 Needle Guide Ass'y 1set
2 (TP13893) Spring Pin 3×22 1
3 (TQ10583) Clamp Spring 1
4 (TQ10555) Clamp Lever 1
5 TQ10246 Snap Ring 1
6 TQ10247 Lock Ring 1
7 TQ10562 O-Ring G-40 1
8 TP01461 Needle Supporter O.D. 3 1
9 TP00341 Needle O.D. 3×180mm 28

10 TP00399 Throttle Anvil 1

11 TQ10241 Back UP Ring 4
12 TQ10240 Cylinder 1
13 TQ10239 Spring 3.5×44×38 2
14 TB08624 Housing Ass'y A 1set
15 (TQ12783) Label Warning 1
16 (TQ12659) Label Name 1
17 (TP08684) Hex.Socket Screw 4×8 3
18 TP01557 Throttle Lever 1
19 TP01802 Spring Pin 3×28 1
20 TQ10450 Parallel Pin 5×35 1

15

No. Part No. Description Qty Price

22 TQ04671 Seal Sheet 9×13.9×2 1
23 TQ04664 Valve 1

24 TQ04665
25 TQ10236 Bushing R3/8×M16 1

26 TP00395 Piston 1
27 CP21603 O-Ring JASO-1028 1
28 TQ11251 Rear Bolt 1
29 TQ10238 Spring 2.6×14.3×24 1

Conical Spring

0.8X6.4X11.6X21.8

30 TQ11250 Rear Cap 1

Accessories

No. Part No. Description Qty Price

— Needle O.D.4×180mm 14
TP01462 Needle Supporter O.D.4 1
TQ02350 Bushing R3/8×NPT3/8 1
TQ03262 Hose Nipple R3/8×3/8 1
TQ12717 Instruction Manual 1
TQ12718 Declaration of Conformity 1

1

JET CHISEL.indd 15 11.2.18 2:12:46 PM

JET CHISEL.indd 16 11.2.18 2:12:46 PM

■Overseas Affiliates / Offices

NITTO KOHKI U.S.A ., Inc.

4525 Turnberry Drive, Hanover Park, IL 60133, U.S.A

Tel: [phone] Fax:[phone]
http://www.nittokohki.com/index.html

NITTO KOHKI EUROPE Co., Ltd.

Unit 21, Empire Centre, Imperial Way,
Watford Hertfordshire, WD24 4TS, United Kingdom

Tel: [phone] Fax:[phone]
http://www.nitto.co.uk/

NITTO KOHKI DEUTSCHLAND GmbH

Lerchenstr. 47, D-71144 Steinenbronn, Germany

Tel: (

49)-7157-22436 Fax:[phone]

http://www.nitto-kohki.de/

NITTO KOHKI AUSTRALIA Pty. Ltd.

77 Brandl Street, Eight Mile Plains QLD 4113,
Australia

Tel: [phone] Fax:[phone]
http://www.nitto-australia.com.au/

NITTO KOHKI Co., Ltd. Singapore Branch

10 Ubi Crescent #01-62, Ubi Techpark Lobby D,
Singapore 408564

Tel: [phone] Fax:[phone]
http://www.nitto-kohki.co.jp/e/nksb/

NITTO KOHKI Co., Ltd. Shanghai Representative Office

#1117 Ruijing Building, Maoming South Road,
Shanghai 200020 China

Tel: [phone] Fax:[phone]
http://www.nitto-kohki.cn/

NITTO KOHKI Co., Ltd. Shenzhen Representative Office

#0726 International Culture Building, 3039, Shennan
Zhong Rd., FutianDistrict, Shenzhen, 518003 China

Tel: [phone] Fax:[phone]
http://www.nitto-kohki.cn/

NITTO KOHKI Co., Ltd. Bangkok Representative Office

38Q, House Convent Bldg, 7th Floor, Unit 7A,
Convent Rd, Silom, Bangkok,10500 Thailand

Tel: (66)- 2 -632-0307 Fax:[phone]
http://www.nittobkk.com/eng_index.htm

EC DECLARATION OF CONFORMITY

We hereby declare that the following our product conforms with the essential health and safety requirements of

EEC Directives.

Product： PNEUMATIC NEEDLE SCALER

Model： JET CHISEL:

AJC-16, JC-16, JT-20, JEX-20, JEX-24 JEX-28, JEX-2800A

Serial No： X

X X X X X

Consecutive numbers (00001～99999)
Christian era’s last digit (0～ 9)

Manufacturer：

2-9-4, Nakaikegami, Ohta-ku, Tokyo, 146-8555, Japan

Authorised Compiler in the Community：

Unit21, E mpi re Ce ntr e, Im perial Wa y, Watfor d Hertfo rdshire, WD 24 4TS, U K

Tel:[phone] Fax:[phone]

Directive： 98/37/EC and 2006/42/EC Machinery Directive

The above product has been evaluated for conformity with above directives using the following European standards.

The technical construction file (TCF) for this product is retained at the above manufacturer’s location.

Machinery Directive： EN ISO12100-1:2003, EN ISO12100-2:2003,

EN ISO14121-1:2007, EN792-4:2000+A1:2008, others

Sound Pressure/Power Level： EN ISO15744:2008, EN ISO4871:1996

Vibration Level： EN28662-1:1992, EN ISO 8662-14:1996

Name： K.Kishi

Title: GENERAL MANAGER MACHINE TOOLS DIV.

Being the responsible person appointed and employed the manufacturer.

Masatoshi Ogue

Co., Ltd.

NITTO KOHKI EUROPE Co., Ltd.

President

NITTO KOHKI

Printed in JAPAN TQ12717-1

JET CHISEL.indd 17 11.2.18 2:12:46 PM