Nitto B-10N User manual

PNEUMATIC BELT SANDER
Please read this manual carefully before you attempt to use
your tool so that you may use it properly and safely.
BELTON Model B-10N, B-20N, B-20NB, B-30N
PROFESSIONAL TOOL
Specications
Model B-10N B-20N B-20NB B-30N
Maximum Operating Pressure 0.6 MPa
Air Consumption (No Load) 0.4 m3/min 0.52 m3/min 0.52 m3/min 0.68 m3/min
Rated Speed (No Load) 17000 r/min(min
−1
) 17000 r/min(min
−1
) 17000 r/min(min
−1
) 14000 r/min(min
−1
)
Standard Belt Size 10×330mm
(25/64″×13″)
20×520mm
(25/32″×20-15/32″)
30×540 mm
(1-3/16″×21-17/16″)
Mass (Weight) 0.7 kg 1.2 kg 1.2 kg 2.4 kg
Sound Pressure Level 78 dB (A) 83 dB (A) 85 dB (A) 82 dB (A)
Sound Power Level 89 dB (A) 94 dB (A) 96 dB (A) 93 dB (A)
Vibration Level 1.28 m/s20.80 m/s20.75 m/s2Handle : 1.53 m/s2
Grip : 0.45 m/s2
Thread Size of Air Inlet Rc 1/4
B-10N B-20N
B-20NB B-30N
Original Instructions
Thespecicationsandcongurations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, Ohta-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.
B10N_B20N_B20NB_B30N_E.indd 1 10.7.9 9:30:22 PM

1
The following Safety notations are used throughout the manual to highlight safety precautions for the user and for
the tool.
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.
Please note, however, that failure to observe safety precautions under the “ 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.
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.
・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 :請向當地供應商或経銷商詢問中
文使用説明書
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 ……………………………………………… 4
4. PREPARATION …………………………………………… 5
5. HOW TO OPERATE THE TOOL ……………………… 6
6. THREAD SIZE OF HOSE FITTING …………………… 9
7. STORAGE ………………………………………………… 9
8. OPTIONAL PARTS ……………………………………… 9
9. ORDERING SERVICE PARTS ………………………… 9
10. EXPLODED DIAGRAM: B-10N ……………………… 10
11. EXPLODED DIAGRAM: B-20N ……………………… 11
12. EXPLODED DIAGRAM: B-20NB …………………… 12
13. EXPLODED DIAGRAM: B-30N ……………………… 13
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 using.
Always wear suitable eye protection.
Always wear suitable hearing protection.
Always wear respiratory protective equipment (PPE).
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 to avoid entanglement with the moving
parts of the tool with clothing, ties, hair etc. 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.
● 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 near inflammable 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.
B10N_B20N_B20NB_B30N_E.indd 1 10.7.9 9:30:24 PM

2
The following Safety notations are used throughout the manual to highlight safety precautions for the user and for
the tool.
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.
Please note, however, that failure to observe safety precautions under the “ 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.
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 to avoid entanglement with the moving
parts of the tool with clothing, ties, hair etc. 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.
● 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 near inflammable 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
power source. Do not leave the work area until the
tool comes to a complete stop.
B10N_B20N_B20NB_B30N_E.indd 2 10.7.9 9:30:25 PM

3
INSTRUCTIONS FOR
THIS TOOL
About Your Tool
Warning
● Wear protective glasses and a dustproof mask.
Operation generates dust and abrasive particles,
etc.whichmaycauseeyeand/orrespiratoryinjury:
Always use PPE (Personal Protective Equipment)
for eye and respiratory protection.
● When you change or adjust the tool or parts, be
sure to detach the tool from the air hose.
● Never touch the moving parts while in operation.
Caution
● Protect yourself from dust and abrasive particles.
Whensandinghotdustandabrasiveparticlesyoff
the workpiece: Always wear eye protection glasses,
long sleeve protective clothing, gloves (except
knitted gloves), foot and leg protection, etc. to
protect yourself. Always keep your face away from
the sanding surface.
1. USAGE
This is a handheld pneumatic belt sander designed
and built to perform sanding operation utilizing a
abrasive belt.
2. CHECK THE CONTENTS OF THE PACKAGE
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 tool or authorized dealer near you for
corrective actions.
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.
Al wa ys c h ec k to s ee t ha t cu tt i ng t oo l an d
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 part s may result in serious
occurrence.
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.
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.
GENERAL: PNEUMATIC
TOOLS
Warning
● Use appropriate air pressure.
Excessively high air pressure will increase the
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 exhaust air contains 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.
B10N_B20N_B20NB_B30N_E.indd 3 10.7.9 9:30:25 PM

4
INSTRUCTIONS FOR
THIS TOOL
About Your Tool
Warning
● Wear protective glasses and a dustproof mask.
Operation generates dust and abrasive particles,
etc.whichmaycauseeyeand/orrespiratoryinjury:
Always use PPE (Personal Protective Equipment)
for eye and respiratory protection.
● When you change or adjust the tool or parts, be
sure to detach the tool from the air hose.
● Never touch the moving parts while in operation.
Caution
● Protect yourself from dust and abrasive particles.
Whensandinghotdustandabrasiveparticlesyoff
the workpiece: Always wear eye protection glasses,
long sleeve protective clothing, gloves (except
knitted gloves), foot and leg protection, etc. to
protect yourself. Always keep your face away from
the sanding surface.
1. USAGE
This is a handheld pneumatic belt sander designed
and built to perform sanding operation utilizing a
abrasive belt.
2. CHECK THE CONTENTS OF THE PACKAGE
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 tool or authorized dealer near you for
corrective actions.
Model Package Contents Qty
B-10N
B-10N 1 set
Abrasive Belts Z76#60×10 2 (one of them
mounted)
Abrasive Belts Z76#80×10 1
Abrasive Belts Z76#100×10 1
Abrasive Belts Z76#120×10 1
Hex. Socket Screw Key 2 1
Hex. Socket Screw Key 4 1
Bushing R1/4×NPT1/4 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1
B-20N
B-20N 1 set
Abrasive Belt Z76#60×20 2 (one of them
mounted)
Abrasive Belt Z76#80×20 1
Abrasive Belt Z76#100×20 1
Abrasive Belt Z76#120×20 1
Hex. Socket Screw Key 2.5 1
Hex. Socket Screw Key 4 1
Bushing R1/4×NPT1/4 1
FingerPadSubAss’y 1 set
Pan Head Screw 5×10 1
Pan Head Screw 6×10 1
Convex Shoe 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1
B-20NB
B-20NB 1 set
Abrasive Belt Z76#60×20 2 (one of them
mounted)
Abrasive Belt Z76#80×20 1
Abrasive Belt Z76#100×20 1
Abrasive Belt Z76#120×20 1
Hex. Socket Screw Key 4 1
Bushing R1/4×NPT1/4 1
FingerPadSubAss’y 1 set
Pan Head Screw 5×10 1
Pan Head Screw 6×10 1
Convex Shoe 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1
B-30N
B-30N 1 set
Abrasive Belt Z76#60×20 2 (one of them
mounted)
Abrasive Belt Z76#80×20 1
Abrasive Belt Z76#100×20 1
SilencerAss’y 1 set
HandleAss’y 1 set
Hex. Socket Screw Key 4 1
Hex. Socket Screw Key 5 1
Bushing R1/4×NPT1/4 1
Instruction Manual 1
Declaration of Conformity 1
Caution for Use 1
3. AIR SUPPLY
3-1. Air Pressure
AdjustairpressurewiththeAirRegulatortothelevel
appropriate for the pneumatic tool used.
B10N_B20N_B20NB_B30N_E.indd 4 10.7.9 9:30:26 PM

5
Air pressure that is too low fails the Tool to operate
at full capacity.
Air pressure that is too high may cause damage to
the Tool.
3-2. Air Line (Fig.1)
Use a 9.5 mm (3/8”) I.D. Connecting Hose between
the Compressor and the Tool.
Drained water, etc., if flown into the Tool, could
cause Tool failure. Install an Air Filter. between the
Compressor and the Tool.
Air Regulator Oiler
Air Filter
Compressor
Lubrication
Tool 9.5mm (3/8”) I.D.
Hose
Cupla
Fig. 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 Tool.
4. PREPARATION
4-1. Fastening The Guard
Caution
● No clearance should be allowed between the
Housing and the Guard. Any clearance, if there
is between them, can cause the Abrasive Belt to
come off, resulting in injury to the operator or
damage to the equipment or both.
YoucansettheGuardatanyangleyoumayndbest
suited for your working posture or the configuration
of workpiece. Once you have placed the Guard at
a desired angle, tighten the Hex. Socket Head Cap
Screw per “A” in Fig. 3 with a Hex. Socket Screw Key.
At that time, carefully fasten the Guard so that there is
no clearance between the Housing and the Guard.
Concava Spring
Convex Bushing
ExhaustCover Concave
Housing

B-30N
Fig.5
4-4.Attaching the Handle (B-30N) (Fig.6 )
Screw the Handle in the side of the Guard.
Handle
B-30N
Fig.6
5. HOW TO OPERATE THE TOOL
Warning
● When sanding, always wear protective glasses
and respiratory protection: Microscopic dust and
abrasive particles that y off the workpiece may
cause eye or respiratory injury or both.
● Before you change or adjust the tool or parts,
always disconnect the air supply hose.
● Never touch the moving parts in operation.
5-1. Start and Stop (Fig. 7)
(1) Check to see that the Throttle Lever is in the OFF
position.
Then connect the hose to the Belt Sander.
(2) B-10N, B-20N, B-20NB
Holding the Belt Sander:
a) Push the Lock Lever down and forward,
b) Grasp the Throttle Lever.
(3) B-30N
Holding the Belt Sander:
a) Push the Lock Lever down and behind,
b) Grasp the Throttle Lever.
The Belt Sander starts running.
(4) W h e n y o u r e l e a s e t h e T h r o t t l e L e v e r, i t
automatically returns to the OFF position.
Fig.2
A
Housing
Guard
Carefully fasten the Guard
sothatthereisnoclearance
between the Housing and
theGuard.
B-10N,B-20N,B-20NB
Fig.3
4-2. Installing The Finger Pad B-20N, B-20NB (Fig.4)
Caution
● Fasten the Finger Pad securely. Failure to do so
may result in injury to the operator or damage to
the equipment or both.
Securely fasten the supplied Finger Pad with two Pan
Head Screws, 5X10 and 6X10, clamping both sides of
the Guard. At that time, the Finger Pad locator should
be on the Guard surface.
PanHeadScrew5X10
PanHead
S
crew
6
x1
0

FingerPad
FingerPadlocator
Guardsurface
B-20N,B-20NB
Fig.4
4-3. How To Fix Silencer (B-30N) (Fig.5)
(a) Insert the Spring into the Exhaust Cover.
(b) Insert the Spring into the concave of the Bushing
PF3/8 of the Belt Sander.
(c) Insert the convex of the Exhaust Cover into the
groove of the Bushing PF3/8.
Guard
B-
30
N
Housing
A
Carefully fasten the
Guardso that there is
no clearance between
the Housing and the
Guard.
B10N_B20N_B20NB_B30N_E.indd 5 10.7.9 9:30:30 PM

6
Concava Spring
Convex Bushing
ExhaustCover Concave
Housing

B-30N
Fig.5
4-4.Attaching the Handle (B-30N) (Fig.6 )
Screw the Handle in the side of the Guard.
Handle
B-30N
Fig.6
5. HOW TO OPERATE THE TOOL
Warning
● When sanding, always wear protective glasses
and respiratory protection: Microscopic dust and
abrasive particles that y off the workpiece may
cause eye or respiratory injury or both.
● Before you change or adjust the tool or parts,
always disconnect the air supply hose.
● Never touch the moving parts in operation.
5-1. Start and Stop (Fig. 7)
(1) Check to see that the Throttle Lever is in the OFF
position.
Then connect the hose to the Belt Sander.
(2) B-10N, B-20N, B-20NB
Holding the Belt Sander:
a) Push the Lock Lever down and forward,
b) Grasp the Throttle Lever.
(3) B-30N
Holding the Belt Sander:
a) Push the Lock Lever down and behind,
b) Grasp the Throttle Lever.
The Belt Sander starts running.
(4) W h e n y o u r e l e a s e t h e T h r o t t l e L e v e r, i t
automatically returns to the OFF position.
Pushdownthelockleverto
unlockthethrottlelever.
LockLever
ThrottleLever
B-10N,B-20N,B-20NB
Fig.7
5-2. Adjusting the Rotation Speed (Fig. 8)
(1) B-10N, B-20N, B-20NB
ToadjusttheRotationSpeed,turntheAdjusting
Lever. It regulates the flow rate of air on which
sanding speed depends.
Turning the Lever upward increases the speed.
The highest speed is available with the Lever set
to the uppermost position.
(2) B-30N
The desired number of rotation between maximum
Rotation Speed and minimum Rotation Speed is
obtained by turning the groove of Valve clockwise
or counter clockwise with screwdriver.
Maximum Rotation Speed
PositionthegrooveofAdjustValvehorizontalto
main body.
Minimum Rotation Speed
Positionthe groove ofAdjust Valvevartical main
body.
Low
AdjustingLever
High
B-10N,B-20N,
B-20NB
AdjustValve
Minimum
Maximum
B-30N
Fig.8
5-3. Tracking Adjustment (Fig. 9)
(1) B-10N, B-20N, B-30N
LoosentheAdjustingScrew,AandB,perFig.9
with a Hex. Socket Screw Key.
ThenusingaHex.SocketScrewKey,Adjustthe
screws so that the Abrasive Belt runs right in the
middle of the Idle Pulley.
Oncetrackingadjustmentismadecorrectly,lock
theAdjustingScrews.
For B-10N, use a Hex. Socket Screw Key 2.
For B-20N, use a Hex. Socket Screw Key 2.5.
For B-20NB, B-30N, use a Hex. Socket Screw
Key 4.
Youneednotmakethistrackingadjustment
Guard
B-
30
N
Housing
A
Carefully fasten the
Guardso that there is
no clearance between
the Housing and the
Guard.
ThrottleLever
LockLever
B-30N
Pullthelocklevertoward
youtounlockthethrottle
lever.
B10N_B20N_B20NB_B30N_E.indd 6 10.7.9 9:30:33 PM

7
when you have an optional 6 mm wide Bracket 6
Assembly (applicable to B-10N only).
(2) B-20NB
Loosen the Hex. Cap Screw, Fig.9 with a Hex.
Socket Screw Key.
Turn the Hex. Socket Head Cap Screw clockwise
or counterclockwise with the accessory Hex.
Socket Screw Key in order to make the abrasive
belt run on the center of the idle pulley.
LoosenAdjusting
S
crewB
AdjustingScrewB
AdjustingScrewA
LoosenAdjustingScrewA
B-10N,B-20N,B-30N
Beltmovement
whenturned
clockwise
Hex.SocketHead
CapScrew
Beltmovement
whenturned
counterclockwise
Clockwise
turn
Counterclockwise
turn
B-20NB
Fig.9
5-4. Sanding Operation
Warning
● Do not press the Abrasive Belt too hard upon the
workpiece. If you do so, the Abrasive Belt may
break.
● When using a non-woven Belt, do not use the
Offset Bracket. If you do so, the Belt may come
Off , causing personal injury.
For deburring operation, an Offset Bracket (optional)
is to be used.
In this application, the Abrasive Belt will be brought
into light contact with the workpiece somewhere in
between the Idle Pulley and Offset Bracket.
For Sanding operation, the Offset Bracket will be
removed and a Shoe will be used.
The Abrasive Belt will be brought into light contact with
the workpiece where the Shoe extends.
5-5. Changing the Abrasive Belt
Caution
● Before servicing, turn the Throttle Lever OFF
and disconnect the hose from the Belt Sander.
● When the Abrasive Belt has an arrow marking on
its inner face, see to it that you set it to the same
direction in which the Belt Sander turns (there is
a marking on the Guard), as well. It is dangerous
to mount it wrong way for the Abrasive Belt may
break prematurely.
● Do not press the Push Button without a Abrasive
Belt mounted unless it is absolutely necessary
to do so, for it may cause equipment failure.
● When changing the Abrasive Belt, remove dust
and abrasive particles from the Drive Pulley area
by air blow, etc.
a) B-10N, B-20N, B-20NB (Fig.10)
1) Loosen the Decorative Screw and turn the Belt
Cover.
2) Keep pushing the Idle Pulley until the Tension
Bar locks.
3) Change the Abrasive Belt with a new one.
Press the Push Button to release Tension Bar
locking.
4) Turn the Belt Cover to get it back to where it
was. Tighten the Decorative Screw.
BeltCover
IdlePulley
PushtheIdlePulley
inthedirection
ofarrow
PushButton
DecorativeScrew

B-10N,B-20N,B-20NB
Fig.10
b) B-30N (Fig.11)
1) Loosen the Decorative Screw and turn the Belt
Cover.
2) Keep pushing the Idle Pulley until the Tension
Bar locks.
3) Change the Abrasive Belt with a new one.
Press the Shoe to release Tension Bar locking.
4) Turn the Belt Cover to get it back to where it
was. Tighten the Decorative Screw.
DecorativeScrew
Shoe
PushtheShoein
thedirection
ofarrow
PuttheIdlePulley
inthedirection
ofarrow
BeltCover
IdlePulley Rotation
B-30N
Fig.11
5-6. Offset Bracket (Optional)
The Offset Bracket is designed to utilize the spring
action of Abrasive Belt, facilitating light-duty sanding
applications, such as contoured surface sanding,
deburring, etc.
a) B-10N, B-20N, B-20NB (Fig.12)
You do not need tools for mounting or removal of
the Offset Bracket.
1) Following the same procedure as Abrasive Belt
replacement, remove the Abrasive Belt.
2) Insert the Offset Bracket into the lower part of
the Guard.
3) Install the Abrasive Belt and Belt Cover.
b) B-30N (Fig.13)
1) Following the same procedure as Abrasive Belt
replacement, remove the Abrasive Belt.
2) Remove the Shoe and mount the Offset Bracket
Ass'y. For removal, refer to 5-8 Replacing the
Shoe.
3) Install the Abrasive Belt and Belt Cover.
Insert
OffsetBracket
B-10N,B-20N,B-20NB
Fig.12 Fig.13
5-7. Replacing the Shoe
a) B-10N, B-20N, B-20NB (Fig.14)
Remove the Shoe by loosening Pan Head Screw
and replace the Shoe.
PanHeadScrew
Shoe
B-10N,B-20N,B-20NB
Fig.14
b) B-30N (Fig.15)
Remove the Belt Cover, Loosen 2pcs, of the M6
cross-recessed Pan Head Screws with a screwdriver
and replace the Shoe.
M6PanHeadScrew
Shoe
M6PanHeadScrew
B-30N
Fig.15
5-8. Replacing the Tension Bar
a) B-10N, B-20N, B-20NB (Figs.16 and 17)
1) Remove the Abrasive Belt.
Press the Push Button.
The Tension Bar will be unlocked.
2) Turn the Tension Bar 90° and pull it off in the
direction of arrow.
(See Fig.16 for B-10N)
B10N_B20N_B20NB_B30N_E.indd 7 10.7.9 9:30:37 PM

8
to do so, for it may cause equipment failure.
● When changing the Abrasive Belt, remove dust
and abrasive particles from the Drive Pulley area
by air blow, etc.
a) B-10N, B-20N, B-20NB (Fig.10)
1) Loosen the Decorative Screw and turn the Belt
Cover.
2) Keep pushing the Idle Pulley until the Tension
Bar locks.
3) Change the Abrasive Belt with a new one.
Press the Push Button to release Tension Bar
locking.
4) Turn the Belt Cover to get it back to where it
was. Tighten the Decorative Screw.
BeltCover
IdlePulley
PushtheIdlePulley
inthedirection
ofarrow
PushButton
DecorativeScrew

B-10N,B-20N,B-20NB
Fig.10
b) B-30N (Fig.11)
1) Loosen the Decorative Screw and turn the Belt
Cover.
2) Keep pushing the Idle Pulley until the Tension
Bar locks.
3) Change the Abrasive Belt with a new one.
Press the Shoe to release Tension Bar locking.
4) Turn the Belt Cover to get it back to where it
was. Tighten the Decorative Screw.
DecorativeScrew
Shoe
PushtheShoein
thedirection
ofarrow
PuttheIdlePulley
inthedirection
ofarrow
BeltCover
IdlePulley Rotation
B-30N
Fig.11
5-6. Offset Bracket (Optional)
The Offset Bracket is designed to utilize the spring
action of Abrasive Belt, facilitating light-duty sanding
applications, such as contoured surface sanding,
deburring, etc.
a) B-10N, B-20N, B-20NB (Fig.12)
You do not need tools for mounting or removal of
the Offset Bracket.
1) Following the same procedure as Abrasive Belt
replacement, remove the Abrasive Belt.
2) Insert the Offset Bracket into the lower part of
the Guard.
3) Install the Abrasive Belt and Belt Cover.
b) B-30N (Fig.13)
1) Following the same procedure as Abrasive Belt
replacement, remove the Abrasive Belt.
2) Remove the Shoe and mount the Offset Bracket
Ass'y. For removal, refer to 5-8 Replacing the
Shoe.
3) Install the Abrasive Belt and Belt Cover.
Insert
OffsetBracket
B-10N,B-20N,B-20NB
Fig.12 Fig.13
5-7. Replacing the Shoe
a) B-10N, B-20N, B-20NB (Fig.14)
Remove the Shoe by loosening Pan Head Screw
and replace the Shoe.
PanHeadScrew
Shoe
B-10N,B-20N,B-20NB
Fig.14
b) B-30N (Fig.15)
Remove the Belt Cover, Loosen 2pcs, of the M6
cross-recessed Pan Head Screws with a screwdriver
and replace the Shoe.
M6PanHeadScrew
Shoe
M6PanHeadScrew
B-30N
Fig.15
5-8. Replacing the Tension Bar
a) B-10N, B-20N, B-20NB (Figs.16 and 17)
1) Remove the Abrasive Belt.
Press the Push Button.
The Tension Bar will be unlocked.
2) Turn the Tension Bar 90° and pull it off in the
direction of arrow.
(See Fig.16 for B-10N)
3) Turn the Tension Bar 30° counter-clockwise and
pull it off in the direction of arrow.
(See Fig.17 for B-20N, B-20NB)
4) When reassembling the Tension Bar, assemble
in reverse order.
b) B-30N (Fig.18)
1) Remove the Abrasive Belt, the Belt Cover and
the Shoe.
2)SufcientlyloosentheKeyBoltandpulloffthe
Idle Pulley Bracket.
3)Formounting,adjustthegrooveontheIdle
Pulley Bracket to meet the Key Bolt, insert it
into the Guard, put the tip of Key Bolt into the
grooveandxitsoastheIdlePulleyBracket
not to be pulled off.
Pullitinthedirectionofarrow
Turn90°
TensionBar
PushButton
B-10N
Fig.16
Pullitinthedirectionofarrow
Turn30°
counter-
clockwise
TensionBar
PushButton
B-20N,B-20NB
Fig.17
Pullitinthedirectionofarrow
BracketAssy
KeyBolt
B-30N
Fig.18
5-9. Replacing the Idle Pulley
(1) B-10N, B-20N, B-30N (Fig.19)
Using a flatblade screwdriver and a Phillips
Screwdriver (for B-10N) or Hex. Socket Screw
Key (for B-20N, B-30N), loosen the Flat Head
Screw and pull the Idle Pulley Shaft off.
(2) B-20NB (Fig.20)
Using a flatblade screwdriver and a Wrench 10,
loosen the Hex. Nut M6 and remove the Idle
B-30N
B10N_B20N_B20NB_B30N_E.indd 8 10.7.9 9:30:39 PM

9
10. EXPLODED DIAGRAM: B-10N
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 severe injuries.
Never attempt to modify the Tool.
Never attempt service or repair the Tool yourself.
No. Part No. Description Qty Price
1 TB08236 Bracket 10 Ass'y 1set
2 (TA99155) Idle Pulley10 Sub Ass'y 1set
3 (TQ12264) Idle Pulley Shaft10 1
4 (TP14455) Countersunk Head Screw 2X5 1
5 (TQ10725) Hex. Socket Countersunk Head Screw
3X6 2
6 (TB07898) Bracket 10 Sub Ass'y 1set
7 (TP14798) Spring Pin 3X10 AW 1
8 (TQ10526) Tension Bar Spring 1
9 (TB07236) Tension Bar Shaft Ass'y 1set
10 TQ07201 Guard Insert 1
11 TQ10934 Stopper 1
12 TQ10724 Spring 1.2X8.4X34 1
13 TP15643 Hex. Socket Set Screw 4X4 with Flat
Point 1
14 TQ07218 Spring 0.35X7.5X7 1
15 TQ10587 Push Button 1
16 TQ10709 Shoe 10 1
17 TP02618 Pan Head Screw 4X8 1
18 TB07294 Guard Sub Ass'y B 1set
19 (TP08646) Hex. Socket Head Cap Screw 5X14 1
20 (TP16361) Label Caution 1
21 (TQ10710) Dust Cover 1
22 TQ10711 Belt Cover 10 1
23 TQ10712 Decorative Screw 1
24 TP00144 Washer M4 1
25 TP12819 Pan Head Screw 4X6 1
26 TP14916 Drive Pulley 1
27 TP01924 Hex. Nut M6 1
28 TB08629 Cap Ass'y 1set
29 (TQ12644) Label Model B-10N 1
30 TP05531 O-ring S-36 1
31 TP06386 Ball Bearing 607ZZ 1
32 TP12414 End Plate A 1
33 TP12415 Cylinder 1
34 TA9A364 Blade Ass'y (4pcs/set) 1set
35 TP10130 Parallel Key Both Ends Round 3X3X10 1
36 TP12416 Rotor 1
37 TP06322 Spacer 8X11X3 1
38 TP12418 End Plate B 1
PulleyBAss’y.WhenmountingtheIdlePulleyB
Ass’y,assenbleinreverseorder.
FlatHeadScrew
or
IdlePulley
B-10N,B-20N,B-30N
Loosen Wrench
Screwdriver
Usea
spacerhere.
Tighten
B-20NB
Fig.19 Fig.20
6. THREAD SIZE OF HOSE FITTING
TheproductcomeswithametalttingwithR(metric)
thread. Connect the Bushing R thread × NPT thread in
the vinyl bag containing standard accessories, if you
would like to have American NPT thread instead.
7. STORAGE
Caution
● When tool is not used, store it out of reach 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.
8. OPTIONAL PARTS
In addition to various kinds or grain sizes of abrasive
materials and Sanding Belts, we have the following
optionalitemstomeetyourdiversiedneeds.
(1) Bracket6Ass’y(TB07283)forB-10N…..foruse
with our narrow belt 6 mm in width, best suited for
corner grinding or grinding in a narrow space. (Fig.
21)
For mounting and removal, see 5-9 Replacing the
Tension Bar.
(2) Offset Bracket Assembly
OffsetBracket10Ass’y(TB05539)forB-10N
OffsetBracket20Ass’y(TB07109)forB-20N,
B-20NB
OffsetBracket30Ass’y(TB08150)forB-30N
Shoe6(TQ10942)
Bracket6Assy(TB07283)
Fig.21
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.
B10N_B20N_B20NB_B30N_E.indd 9 10.7.9 9:30:43 PM

10
10. EXPLODED DIAGRAM: B-10N
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 severe injuries.
Never attempt to modify the Tool.
Never attempt service or repair the Tool yourself.
The parts numbers with ( ) are included in the Ass'y parts written above them.
No. Part No. Description Qty Price
1 TB08236 Bracket 10 Ass'y 1set
2 (TA99155) Idle Pulley10 Sub Ass'y 1set
3 (TQ12264) Idle Pulley Shaft10 1
4 (TP14455) Countersunk Head Screw 2X5 1
5 (TQ10725) Hex. Socket Countersunk Head Screw
3X6 2
6 (TB07898) Bracket 10 Sub Ass'y 1set
7 (TP14798) Spring Pin 3X10 AW 1
8 (TQ10526) Tension Bar Spring 1
9 (TB07236) Tension Bar Shaft Ass'y 1set
10 TQ07201 Guard Insert 1
11 TQ10934 Stopper 1
12 TQ10724 Spring 1.2X8.4X34 1
13 TP15643 Hex. Socket Set Screw 4X4 with Flat
Point 1
14 TQ07218 Spring 0.35X7.5X7 1
15 TQ10587 Push Button 1
16 TQ10709 Shoe 10 1
17 TP02618 Pan Head Screw 4X8 1
18 TB07294 Guard Sub Ass'y B 1set
19 (TP08646) Hex. Socket Head Cap Screw 5X14 1
20 (TP16361) Label Caution 1
21 (TQ10710) Dust Cover 1
22 TQ10711 Belt Cover 10 1
23 TQ10712 Decorative Screw 1
24 TP00144 Washer M4 1
25 TP12819 Pan Head Screw 4X6 1
26 TP14916 Drive Pulley 1
27 TP01924 Hex. Nut M6 1
28 TB08629 Cap Ass'y 1set
29 (TQ12644) Label Model B-10N 1
30 TP05531 O-ring S-36 1
31 TP06386 Ball Bearing 607ZZ 1
32 TP12414 End Plate A 1
33 TP12415 Cylinder 1
34 TA9A364 Blade Ass'y (4pcs/set) 1set
35 TP10130 Parallel Key Both Ends Round 3X3X10 1
36 TP12416 Rotor 1
37 TP06322 Spacer 8X11X3 1
38 TP12418 End Plate B 1
No. Part No. Description Qty Price
39 TP12419 Ball Bearing 628ZZ 1
40 TB08626 Housing Sub Ass'y 1set
41 (TQ12650) Label Warning 1
42 TQ11724 Parallel Pin 3X16 1
43 TQ11560 Tapping Screw 3X8 3
44 TB07709 Lever Ass'y 1set
45 (TP13893) Spring Pin 3X22AW 1
46 TQ11554 AdjustLever 1
47 TP08598 Pan Head Screw 3X5 1
48 TQ11626 Lever Cap 1
49 TQ11555 Packing 1
50 CQ14480 O-ring JASO-1010 1
51 TB08078 Air Inlet Sub Ass'y 1set
52 TB07938 Throttle Valve Ass'y 1set
53 (TP14604) O-ring S-10 1
54 (TP12569) O-ring S-11.2 2
55 TB07708 Valve Stem Ass'y 1set
56 (TQ10395) O-ringSS-2.5 1
57 (TP11994) O-ringP-4 1
58 (TP03769) Valve Spring 1
59 TB07937 AdjustValveAss'y 1set
60 (CQ25954) O-ring AS568-012 1
61 (CQ05860) O-ring AS568-013 1
62 (CP24969) O-ring JASO-1011 1
63 TP07031 O-ring S-8 1
64 TB08079 Silencer Ass'y 1set
65 TP00857 Bushing M16XRc1/4 1
Accessories
No. Part No. Description Qty Price
TP01939 Hex. Socket Screw Key 4 1
TP13892 Hex. Socket Screw Key 2 1
66
TP16597 Abrasive Belt Z76XN #60X10 2
TQ00109 Abrasive Belt Z76XN #80X10 1
TQ00110 Abrasive Belt Z76 #100X10 1
TQ00352 Abrasive Belt Z76 #120X10 1
TP02236 Bushing R1/4XNPT1/4 1
TQ12660 Instruction Manual 1
TQ12617 Declaration of Conformity 1
46
26
24
5
1
678
9
10
11
12
13
17
16
15
14
66
3
27
42 43
44
49
50
51 60
59
18
19
20
21
22
24
25
23
62
43
65
43
63
64
58
57
56
54
53
52
45
40 41
39
38
37
36
35
34
29 28
32
31
30
33
47
48
MODELB-10NASSY 2008/4/22
2008/8/18
61
55
Shoe6(TQ10942)
Bracket6Assy(TB07283)
Fig.21
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.
B10N_B20N_B20NB_B30N_E.indd 10 10.7.9 9:30:45 PM

11
11. EXPLODED DIAGRAM: B-20N
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 severe injuries.
Never attempt to modify the Tool.
Never attempt service or repair the Tool yourself.
No. Part No. Description Qty Price
43 TB08627 Housing Sub Ass'y 1set
44 (TQ12650) Label Warning 1
45 TQ11724 Parallel Pin 3X16 1
46 TQ11560 Tapping Screw 3X8 3
47 TB07709 Lever Ass'y 1set
48 (TP13893) Spring Pin 3X22AW 1
49 TQ11554 AdjustLever 1
50 TP08598 Pan Head Screw3X5 1
51 TQ11626 Lever Cap 1
52 TQ11555 Packing 1
53 CQ14480 O-ring JASO-1010 1
54 TQ11551 Air Inlet 1
55 TB07938 Throttle Valve Ass'y 1set
56 (TP14604) O-ring S-10 1
57 (TP12569) O-ring S-11.2 2
58 TB07708 Valve Stem Ass'y 1set
59 (TQ10395) O-ring SS-2.5 1
60 (TP11994) O-ring P-4 1
61 (TP03769) Valve Spring 1
62 TB07937 AdjustValveAss'y 1set
63 (CQ25954) O-ring AS568-012 1
64 (CQ05860) O-ring AS568-013 1
65 (CP24969) O-ring JASO-1011 1
66 TP07031 O-ring S-8 1
67 TQ11558 Silencer 1
68 TP00857 Bushing M16XRc1/4 1
Accessories
No. Part No. Description Qty Price
69
TP15867 Abrasive Belt Z76X #60X20 2
TP15868 Abrasive Belt Z76X #80X20 1
TP15869 Abrasive Belt Z76X #100X20 1
TP15870 Abrasive Belt Z76X #120X20 1
70 TB07908 Finger Pad Sub Ass'y 1set
71 (TP00051) Pan Head Screw 5X10 1
72 (TP02419) Pan Head Screw 6X10 1
TP04305 Hex. Socket Screw Key 2.5 1
TP01939 Hex. Socket Screw Key 4 1
TQ11686 Convex Shoe 1
TP02236 Bushing R1/4XNPT1/4 1
TQ12660 Instruction Manual 1
TQ12617 Declaration of Conformity 1
No. Part No. Description Qty Price
1 TA99885 Idle Pulley A Sub Ass'y 1set
2 TQ11616 Idle Pulley Shaft 1
3 TP16219 Hex. Countersunk Head Screw 4X10 1
4 TQ11400 Hex. Socket Button Head Screw4X8 2
5 TQ12197 Toothed Lock Washer AW-4 2
6 TB07747 Bracket Sub Ass'y A 1set
7 TP03544 Spring Pin3X16 AW 1
8 TQ10526 Tension Bar Spring 1
9 TB07777 Tension Bar Shaft Ass'y 1set
10 TQ11610 Stopper 1
11 TQ11609 Guard Insert 1
12 TQ11620 Push Rod 1
13 TQ11621 Spring1.6X11X45 1
14 TQ12196 Hex. Socket Set Screw 4X5 with Cup
Point 1
15 TQ11659 Hex. Socket Button Head Screw 3X6 1
16 TQ11611 Shoe 1
17 TQ11660 Pan Head Screw 5X6 1
18 TQ10712 Decorative Screw 1
19 TQ07218 Spring 0.35X7.5X7 1
20 TQ11622 Push Button 1
21 TB08068 Guard Sub Ass'y B 1set
22 (TP04532) Hex. Socket Head Cap Screw 5X30 1
23 (TP16361) Label Caution 1
24 (TP16360) Label Rotation 1
25 (TP16207) Dust Cover 1
26 TQ11618 Belt Cover 1
27 TP00144 Washer M4 1
28 TP12819 Pan Head Screw4X6 1
29 TQ11617 Drive Pulley 1
30 TP01918 Hex. Nut M10 1
31 TB08630 Cap Ass'y 1set
32 (TQ12645) Label Model B-20N 1
33 CQ04413 O-ring S-38 1
34 TP00468 Ball Bearing 608ZZ 1
35 TP01907 End Plate A 1
36 TP10000 Cylinder 1
37 TA9A212 Blade Ass'y(4pcs/set) 1set
38 TP00502 Parallel Key Both Ends Round
4X4X9.5 1
39 TP01909 Rotor 1
40 TP01912 Spacer 1
41 TP01911 End Plate B 1
42 TP01913 Ball Bearing 6000ZZ 1
9
8
7
6
45
2
69
10
11
12
1
3
13
MODELB-20NASSY 2008/4/22
2008/8/26
16 17
20
29
28
27
26
30
19
18
14
15
22 23 21
25
70
71
72
49
45 46
47
52
53
54 63
62 65
46
68
46 66
67
61
60
59
57
56
55
48
43 44
42
41
40
39
38
37
32
31
35
34
33
36
50
51
64
58
24
12. EXPLODED DIAGRAM: B-20NB
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 severe injuries.
Never attempt to modify the Tool.
Never attempt service or repair the Tool yourself.
No. Part No. Description Qty Price
73 TB08336 Idle Pulley Bracket Sub Ass'y 1set
74 TA90514 Idle Pulley B Ass'y 1set
10 TQ11610 Stopper 1
11 TQ11609 Guard Insert 1
12 TQ11620 Push Rod 1
13 TQ11621 Spring1.6X11X45 1
14 TQ12196 Hex. Socket Set Screw 4X5 with Cup
Point 1
15 TQ11659 Hex. Socket Button Head Screw 3X6 1
16 TQ12411 Shoe 1
17 TQ11660 Pan Head Screw 5X6 1
18 TQ10712 Decorative Screw 1
19 TQ07218 Spring 0.35X7.5X7 1
20 TQ11622 Push Button 1
21 TB08068 Guard Sub Ass'y B 1set
22 (TP04532) Hex. Socket Head Cap Screw 5X30 1
23 (TP16361) Label Caution 1
24 (TP16360) Label Rotation 1
25 (TP16207) Dust Cover 1
26 TQ11618 Belt Cover 1
27 TP00144 Washer M4 1
28 TP12819 Pan Head Screw4X6 1
29 TQ11617 Drive Pulley 1
30 TP01918 Hex. Nut M10 1
31 TB08579 Cap Ass'y 1set
32 (TQ12604) Label Model B-20NB 1
33 CQ04413 O-ring S-38 1
34 TP00468 Ball Bearing 608ZZ 1
35 TP01907 End Plate A 1
36 TP10000 Cylinder 1
37 TA9A212 Blade Ass'y(4pcs/set) 1set
38 TP00502 Parallel Key Both Ends Round
4X4X9.5 1
39 TP01909 Rotor 1
40 TP01912 Spacer 1
41 TP01911 End Plate B 1
42 TP01913 Ball Bearing 6000ZZ 1
43 TB08627 Housing Sub Ass'y 1set
44 (TQ12650) Label Warning 1
45 TQ11724 Parallel Pin 3X16 1
The parts numbers with ( ) are included in the Ass'y parts written above them.
B10N_B20N_B20NB_B30N_E.indd 11 10.7.9 9:30:47 PM

12
11. EXPLODED DIAGRAM: B-20N
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 severe injuries.
Never attempt to modify the Tool.
Never attempt service or repair the Tool yourself.
No. Part No. Description Qty Price
43 TB08627 Housing Sub Ass'y 1set
44 (TQ12650) Label Warning 1
45 TQ11724 Parallel Pin 3X16 1
46 TQ11560 Tapping Screw 3X8 3
47 TB07709 Lever Ass'y 1set
48 (TP13893) Spring Pin 3X22AW 1
49 TQ11554 AdjustLever 1
50 TP08598 Pan Head Screw3X5 1
51 TQ11626 Lever Cap 1
52 TQ11555 Packing 1
53 CQ14480 O-ring JASO-1010 1
54 TQ11551 Air Inlet 1
55 TB07938 Throttle Valve Ass'y 1set
56 (TP14604) O-ring S-10 1
57 (TP12569) O-ring S-11.2 2
58 TB07708 Valve Stem Ass'y 1set
59 (TQ10395) O-ring SS-2.5 1
60 (TP11994) O-ring P-4 1
61 (TP03769) Valve Spring 1
62 TB07937 AdjustValveAss'y 1set
63 (CQ25954) O-ring AS568-012 1
64 (CQ05860) O-ring AS568-013 1
65 (CP24969) O-ring JASO-1011 1
66 TP07031 O-ring S-8 1
67 TQ11558 Silencer 1
68 TP00857 Bushing M16XRc1/4 1
Accessories
No. Part No. Description Qty Price
69
TP15867 Abrasive Belt Z76X #60X20 2
TP15868 Abrasive Belt Z76X #80X20 1
TP15869 Abrasive Belt Z76X #100X20 1
TP15870 Abrasive Belt Z76X #120X20 1
70 TB07908 Finger Pad Sub Ass'y 1set
71 (TP00051) Pan Head Screw 5X10 1
72 (TP02419) Pan Head Screw 6X10 1
TP04305 Hex. Socket Screw Key 2.5 1
TP01939 Hex. Socket Screw Key 4 1
TQ11686 Convex Shoe 1
TP02236 Bushing R1/4XNPT1/4 1
TQ12660 Instruction Manual 1
TQ12617 Declaration of Conformity 1
12. EXPLODED DIAGRAM: B-20NB
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 severe injuries.
Never attempt to modify the Tool.
Never attempt service or repair the Tool yourself.
No. Part No. Description Qty Price
46 TQ11560 Tapping Screw 3X8 3
47 TB07709 Lever Ass'y 1set
48 (TP13893) Spring Pin 3X22AW 1
49 TQ11554 AdjustLever 1
50 TP08598 Pan Head Screw3X5 1
51 TQ11626 Lever Cap 1
52 TQ11555 Packing 1
53 CQ14480 O-ring JASO-1010 1
54 TQ11551 Air Inlet 1
55 TB07938 Throttle Valve Ass'y 1set
56 (TP14604) O-ring S-10 1
57 (TP12569) O-ring S-11.2 2
58 TB07708 Valve Stem Ass'y 1set
59 (TQ10395) O-ring SS-2.5 1
60 (TP11994) O-ring P-4 1
61 (TP03769) Valve Spring 1
62 TB07937 AdjustValveAss'y 1set
63 (CQ25954) O-ring AS568-012 1
64 (CQ05860) O-ring AS568-013 1
65 (CP24969) O-ring JASO-1011 1
66 TP07031 O-ring S-8 1
67 TQ11558 Silencer 1
68 TP00857 Bushing M16XRc1/4 1
Accessories
No. Part No. Description Qty Price
69
TP15867 Abrasive Belt Z76X #60X20 2
TP15868 Abrasive Belt Z76X #80X20 1
TP15869 Abrasive Belt Z76X #100X20 1
TP15870 Abrasive Belt Z76X #120X20 1
70 TB07908 Finger Pad Sub Ass'y 1set
71 (TP00051) Pan Head Screw 5X10 1
72 (TP02419) Pan Head Screw 6X10 1
TP01939 Hex. Socket Screw Key 4 1
TQ11686 Convex Shoe 1
TP02236 Bushing R1/4XNPT1/4 1
TQ12660 Instruction Manual 1
TQ12617 Declaration of Conformity 1
No. Part No. Description Qty Price
73 TB08336 Idle Pulley Bracket Sub Ass'y 1set
74 TA90514 Idle Pulley B Ass'y 1set
10 TQ11610 Stopper 1
11 TQ11609 Guard Insert 1
12 TQ11620 Push Rod 1
13 TQ11621 Spring1.6X11X45 1
14 TQ12196 Hex. Socket Set Screw 4X5 with Cup
Point 1
15 TQ11659 Hex. Socket Button Head Screw 3X6 1
16 TQ12411 Shoe 1
17 TQ11660 Pan Head Screw 5X6 1
18 TQ10712 Decorative Screw 1
19 TQ07218 Spring 0.35X7.5X7 1
20 TQ11622 Push Button 1
21 TB08068 Guard Sub Ass'y B 1set
22 (TP04532) Hex. Socket Head Cap Screw 5X30 1
23 (TP16361) Label Caution 1
24 (TP16360) Label Rotation 1
25 (TP16207) Dust Cover 1
26 TQ11618 Belt Cover 1
27 TP00144 Washer M4 1
28 TP12819 Pan Head Screw4X6 1
29 TQ11617 Drive Pulley 1
30 TP01918 Hex. Nut M10 1
31 TB08579 Cap Ass'y 1set
32 (TQ12604) Label Model B-20NB 1
33 CQ04413 O-ring S-38 1
34 TP00468 Ball Bearing 608ZZ 1
35 TP01907 End Plate A 1
36 TP10000 Cylinder 1
37 TA9A212 Blade Ass'y(4pcs/set) 1set
38 TP00502 Parallel Key Both Ends Round
4X4X9.5 1
39 TP01909 Rotor 1
40 TP01912 Spacer 1
41 TP01911 End Plate B 1
42 TP01913 Ball Bearing 6000ZZ 1
43 TB08627 Housing Sub Ass'y 1set
44 (TQ12650) Label Warning 1
45 TQ11724 Parallel Pin 3X16 1
69
10
11
12
13
MODELB-20NASSY 2008/4/22
2008/8/26
16 17
20
29
28
27
26
30
19
18
14
15
2223 21
25
70
71
72
49
45
46
47
52
53
54 63
62 65
46
68
4666
67
61
60
59
57
56
55
48
43 44
42
41
40
39
38
37
32
31
35
34
33
36
50
51
64
58
24
73
74
The parts numbers with ( ) are included in the Ass'y parts written above them.
B10N_B20N_B20NB_B30N_E.indd 12 10.7.9 9:30:49 PM

13
13. EXPLODED DIAGRAM: B-30N
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 severe injuries.
Never attempt to modify the Tool.
Never attempt service or repair the Tool yourself.
MODELB-30NASSY 2008/8/18
2010/6/26
30
31
29
33
1
2
5
6
7
8
3
9
10
11
12
13
15
17
16
18 19 20
21
18
22
23
24
25
26
27
28
32
34
35 37
36 38
3940
41
42
43
46
44 45
47
48
49
50
51
52
53
54
55
57
34
4
14
No. Part No. Description Qty Price
1 TB08170 Idle Pulley A Ass'y 1set
2 TQ11792 Idle Pulley Shaft 1
3 TP16219 Hex. Countersunk Head Screw 4X10 1
4 TB08028 Bracket Sub Ass'y 1set
5 TP07577 Spring Pin 4X16 AW 1
6 TP08646 Hex.Cap Screw 5X14 2
7 TQ12215 Toothed Lock Washer AW-5 2
8 TQ10526 Tension Bar Spring 1
9 TQ11793 Tension Bar 1
10 TQ11881 Flat Shoe 1
11 TQ11794 Spring1.4X7.2X110 1
12 TQ11838 Spring Guide 1
13 TB08171 Guard Sub Ass'y B 1set
14 (TP16360) Label Rotation 1
15 (TP16361) Label Caution 1
16 (TP04060) Dust Cover 1
17 (TP04073) Hex.Cap Screw 6X35 1
18 TP08132 Pan Head Screw 6X8 2
19 TA92254 Key Bolt Ass'y 1set
20 TQ11810 Shoe Spring 1
21 TQ11997 Parallel Pin 5X16 1
22 TQ02418 Decorative Screw 5X10 1
23 TQ11797 Belt Cover 1
24 TQ04426 Nylon Washer 1
25 TP04077 Hex.Nut M12X1.5 1
26 TQ11807 Drive Pulley 1set
27 TP04058 Thrust Washer B 36.2X62X1 1
28 TP06290 Pan Head Screw 4X 8 1
29 TB01793 Throttle Lever Ass'y 1set
30 (TP00460) Spring Pin 3X22 AW 1
31 (TP05498) Spring Pin 2X16 AW 1
32 TB08628 Housing Sub Ass'y 1set
33 (TQ12656) Label Warning 1
34 TP00498 Ball Bearing 6001ZZ 2
No. Part No. Description Qty Price
35 TQ11986 Hex. Countersunk Head Screw 4X8 2
36 TP04061 SpringPin 3X 6 AW 1
37 TQ11801 Lower Bearing Case 1
38 TP04036 Spacer 1
39 TP04032 Rotor 1
40 TP00502 Parallel Key Both Ends Round 4X4X9.5 1
41 TA9A215 Blade Ass'y (5pcs/set) 1set
42 TP04031 Cylinder 1
43 TP04035 Upper Bearing Case 1
44 TB08631 Cap Ass'y 1set
45 (TQ12646) Label Model 1
46 TQ11806 O-Ring AS568A-034 1
47 TA93925 Valve Stem Ass'y 1set
48 TP12405 AdjustValve 1
49 TP12407 O-Ring S- 15 1
50 TP12406 Spacer 10.5X17.9X1.6 1
51 CP00987 Internal Retaining Ring C- 18 1
52 TP10005 Bushing PF 3/8 1
53 TA96323 Silencer Ass'y 1set
54 TP00857 Bushing M16XRc1/4 1
Accessories
No. Part No. Description Qty Price
55 TB08248 Handle Ass'y 1set
TP01939 Hex. Socket Screw Key 4 1
57
TQ00358 Abrasive Belt Z76X # 60X30 2
TQ00359 Abrasive Belt Z76X # 80X30 1
TQ00360 Abrasive Belt Z76X #100X30 1
TP02236 Bushing R1/4XNPT1/4 1
TP04004 Hex. Socket Screw Key 5 1
TQ12660 Instruction Manual 1
TQ12617 Declaration of Conformity 1
The parts numbers with ( ) are included in the Ass'y parts written above them.
B10N_B20N_B20NB_B30N_E.indd 13 10.7.9 9:30:51 PM

13. EXPLODED DIAGRAM: B-30N
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 severe injuries.
Never attempt to modify the Tool.
Never attempt service or repair the Tool yourself.
MODELB-30NASSY 2008/8/18
2010/6/26
30
31
29
33
1
2
5
6
7
8
3
9
10
11
12
13
15
17
16
18 19 20
21
18
22
23
24
25
26
27
28
32
34
35 37
36 38
3940
41
42
43
46
44 45
47
48
49
50
51
52
53
54
55
57
34
4
14
No. Part No. Description Qty Price
35 TQ11986 Hex. Countersunk Head Screw 4X8 2
36 TP04061 SpringPin 3X 6 AW 1
37 TQ11801 Lower Bearing Case 1
38 TP04036 Spacer 1
39 TP04032 Rotor 1
40 TP00502 Parallel Key Both Ends Round 4X4X9.5 1
41 TA9A215 Blade Ass'y (5pcs/set) 1set
42 TP04031 Cylinder 1
43 TP04035 Upper Bearing Case 1
44 TB08631 Cap Ass'y 1set
45 (TQ12646) Label Model 1
46 TQ11806 O-Ring AS568A-034 1
47 TA93925 Valve Stem Ass'y 1set
48 TP12405 AdjustValve 1
49 TP12407 O-Ring S- 15 1
50 TP12406 Spacer 10.5X17.9X1.6 1
51 CP00987 Internal Retaining Ring C- 18 1
52 TP10005 Bushing PF 3/8 1
53 TA96323 Silencer Ass'y 1set
54 TP00857 Bushing M16XRc1/4 1
Accessories
No. Part No. Description Qty Price
55 TB08248 Handle Ass'y 1set
TP01939 Hex. Socket Screw Key 4 1
57
TQ00358 Abrasive Belt Z76X # 60X30 2
TQ00359 Abrasive Belt Z76X # 80X30 1
TQ00360 Abrasive Belt Z76X #100X30 1
TP02236 Bushing R1/4XNPT1/4 1
TP04004 Hex. Socket Screw Key 5 1
TQ12660 Instruction Manual 1
TQ12617 Declaration of Conformity 1
B10N_B20N_B20NB_B30N_E.indd 14 10.7.9 9:30:52 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: [phone] 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: ( 86)-755-8375-2185 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: ( 6 6 ) - 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 BELT SANDER
Model：BELTON:B-10N, B-20N, B-20NB and B-30N
Serial No：X X X X X X
Consecutive numbers (00001～99999)
Christian era’s last digit (0～9)
Manufacturer：NITTO KOHKI Co., Ltd.
2-9-4, Nakaikegami, Ohta-ku, Tokyo, 146-8555, Japan
Authorised Compiler In The Community：
NITTO KOHKI EUROPE Co., Ltd.
Unit21, Empire Centre, Imperial Way, Watford Hertfordshire, WD24 4TS, UK
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, EN792-8:2001+A1:2008, others
Sound Pressure/Power Level：EN ISO15744:2008, EN ISO4871:1996
Vibration Level：EN28662-1:1992, EN ISO8662-8:1997
Name：K.Kishi
Title: GENERAL MANAGER MACHINE TOOLS DIV.
Being the responsible person appointed and employed the manufacturer.
Printed in KOREA TQ12660-1
B10N_B20N_B20NB_B30N_E.indd 15 10.7.9 9:30:53 PM