Nitto Kohki OSV-60A User manual

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 : [email protected]
URL : www.nitto-kohki.co.jp
PNEUMATIC ORBITAL SANDER
Please read this manual carefully before you attempt to use
your tool so that you may use it properly and safely.
ORBITAL SANDER Model OSV-60A
PROFESSIONAL TOOL
Keep the manual handy – so you can use it whenever necessary.
Original Instructions
Specifications
Model OSV-60A
Maximum Operating Pressure MPa 0.6
Air Consumption (No Load) m3/min 0.68
Rated Speed (No Load) min-1 8,500
Orbit Diameter mm(inch) 10 (3/8)
Abrasive Paper Size mm(inch) 150 (6)
Mass (Weight) kg 2
Sound Pressure Level dB(A) 88
Sound Power Level dB(A) 99
Vibration Level [Uncertainty K] Main Handle m/s2[m/s2] 4.6 [0.93]
Housing m/s2[m/s2] 7.2 [1.17]
Thread Size of Air Inlet Rc1/4

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 products.
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. PREPARATIONS …………………………………………4
5. ATTACH ABRASIVE PAPER ……………………………5
6. HOW TO OPERATE THE TOOL………………………… 5
7. REPLACING THE PAD……………………………………5
8. STORAGE …………………………………………………6
9. ORDERING SERVICE PARTS …………………………6
10. EXPLODED DIAGRAM : OSV-60A………………………7
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).

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.
●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 fly 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 specifications: 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.

3
MAINTENANCE/SERVICE
●Do not take apart or modify tool.
Disassembly or modification carried out without
the supervision of a qualified or authorized service
engineer could result in an accident or injury.
●Inspect cutting tool and accessories, etc.
Always check to see that cutting 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.
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 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 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 connecting hose carefully.
Do not carry the tool by the connecting hose.
Do not pull the connecting hose to disconnect.

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.
●Always turn off the air supply and disconnect the
air supply hose beforehand whenever replacing
Abrasive Papers.
●Be sure to keep hands clear of moving parts.
●After mounting Pad, hold the Orbital Sander
under a steelworkbench or safety place and run
it for at least one minute.
Make certain no one is within the operating direction
of the Pad. If the Pad is defective, improperly
mounted or the wrong size and speed, this is the
time it will usually fail.
●Air pressure at the sander inlet with the sander
running must not exceed 0.6 MPa.
●Always replace damaged, bent or severely worn
Pads.
Do not use a Pad that has been subjected to an
Abrasive Paper failure.
1. USAGE
This tool is for sanding workpieces using Abrasive
Paper.
WARNING
This tool is not designed for water sanding.
Never use for water sanding.
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.
Package Contents Qty Check
ORBITAL SANDER OSV-60A 1set
Spanner 17 1
Bushing R1/4 x NPT1/4 1
Brush 1
Hose 1
Dust Bag 1
Hose Band 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
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 (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 the
tool.
4. PREPARATIONS
4-1. Thread Size of Hose Fitting
The product comes with a metal fitting 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.

5
4-2. How to assemble Hose and Dust Bag
Insert one end of Hose to the exhaust of the tool
and tighten with Hose Band securely. Connect
another end of the Hose to the Dust Bag or Dust
Collector. Always keep the inside of the Hose Clean.
Accumulated dust inside of the Hose will decrease
not only the efficiency of dust collection but also the
performance of the tool itself.
5. ATTACH ABRASIVE PAPER
WARNING
Always turn off the air supply and disconnect the
air supply hose beforehand whenever replacing
Abrasive Papers.
Stick the Abrasive Paper onto the Pad with aligning
their dust holes each other. Misalignment of
those holes will decrease the performance of dust
collection.
Abrasive Paper
Pad
φ150mm(6")
Fig. 2
6. HOW TO OPERATE THE TOOL
6-1. Start and Stop
To start: Release the Lock Lever
and hold down the Throttle Lever.
To stop: Release the Throttle Lever.
Lock Lever
Release
Throttle Lever
Fig. 3
6-2. Speed Adjustment
WARNING
Be sure to keep hands clear of moving parts.
The Speed can be adjusted with a Regulator.
Select a desired Speed by adjusting the Regulator.
Maximum Speed: Turn the Regulator dial clockwise
Minimum Speed: Turn the Regulator dial
counterclockwise
Regulator Max
Min
Throttle Valve
Fig. 4
6-3. How to Operate
Stick the Abrasive Paper onto the Pad. Hold the
grip with one hand and lightly press the Pad against
the work surface. Then hold the top of the Housing
Cover with another hand. Turn on the Throttle
Lever slightly. After making sure the smooth start-
up, turn the Throttle Lever down completely to get
the desired Speed. An excess power of pressing
tools against the work surface cause slow down of
the Speed of the Pad. It silt the abrasive paper and
prevent the efficiency of the sanding work.
7. REPLACING THE PAD
WARNING
Always turn off the air supply and disconnect the
air supply hose beforehand whenever replacing
the Pad.
Tighten the Pad securely. Insufficient tightening
of screws may lead to unintended accidents.
To remove the Pad, hold the Spindle with
the accessory Spanner 17 and turn the Pad
counterclockwise by hand.
To attach the Pad, lock the Spindle with the
accessory Spanner 17 and insert the screw located
in the center of the Pad into the Spindle and fix by
turning the Pad clockwise.

6
Spanner 17
Spindle
Pad
Fig. 5
8. 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.
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.

7
10. EXPLODED DIAGRAM : OSV-60A
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 TB02151 Throttle Lever Ass’y 1 set
2 (TP01802) Spring Pin 3×28 AW 1
40 (TP05498) Spring Pin 2×16 AW 1
3 TP14808 Housing Cover 1
4 TA99063 Throttle Valve Ass’y 1 set
5 LP30942 Pan Head Screw 4×14 2
6 TP14810 Grip Tube 1
7 TQ02790 Lever Wear Plate 1
8 TB02276 Rear Cap Ass’y 1 set
41 (TQ12752) Warning Label CE Mark 1
9 TP14804 Gasket A 1
10 TP14809 Housing 1
11 TP20537 Needle Roller 3×21.8 1
12 TP04595 External Retaining Ring C-10 1
13 TP01913 Ball Bearing 6000ZZ 1
14 TP14817 End Plate A 1
15 TP08932 Spring Pin 4×8 AW 1
16 TP14820 Cylinder 1
17 TA9A288 Blade Ass’y (4 pcs) 1 set
18 TP05980 Rotor 1
19 TP14818 End Plate B 1
20 TQ01504 Ball Bearing 6003LLB 1
21 TP14811 Gasket B 1
22 TB02218 Base Cover Ass’y 1 set
42 (TQ02915) Label Warning OSV-60A 1
43 (TQ02923) Plate Model Number OSV-60A 1
No. Part No. Description Qty Price
23 TP00513 Spring Washer M5 4
24 LP30138 Pan Head Screw 5×14 4
26 TP14875 Cover 6” 1
27 TP14869 Counter shaft 1
28 TP14822 Parallel Key 2.5×3.8×20 1
29 TP03546 External Retaining Ring C-12 1
31 TP05650 Ball Bearing 6001D 2
32 TP01036 Internal Retaining Ring C-28 1
33 TP05984 Spindle 1
34 TB03898 Pad 6” L-6H Ass’y [OSV] 1 set
44 (TP16713) Label Caution 1
35 TP14876 Weight 1
36 TP05986 Flat Fillister Head Screw 5×81
45 TQ00857 Bushing M16×Rc1/4 1
ACCESSORIES
No. Part No. Description Qty Price
TP00474 Spanner 17 1
TP02236 Bushing R1/4×NPT1/4 1
TP14842 Brush 1
38 TP14835 Hose 1
39 TP14836 Dust Bag 1
37 TP05662 Hose Band 1
TQ12758 Instruction Manual 1
TQ12759 Declaration of Conformity 1

8

Overseas Affiliates / Offices
NITTO KOHKI U.S.A., INC.
46 Chancellor Drive, Roselle, IL 60172 U.S.A.
Tel: [phone] Fax:[phone]
NITTO KOHKI EUROPE CO., LTD.
Unit 21, The Empire Centre Imperial Way,
Watford Herts, WD24 4TS, U.K.
Tel: [phone] Fax:[phone]
NITTO KOHKI DEUTSCHLAND GMBH
Lerchenstr.47 D-71144 Steinenbronn, Germany
Tel: [phone] Fax:[phone]
NITTO KOHKI CO., LTD., SINGAPORE BRANCH
10 UBI CRESCENT #01-62,
UBI TECHPARK LOBBY D, SINGAPORE 408564,
Tel: [phone] Fax:[phone]
NITTO KOHKI CO., LTD.,
BANGKOK REPRESENTATIVE OFFICE
M&A Business Center 38Q. House Convent Bldg.,
7th Floor, Unit 7A, Convent Rd., Silom, Bangrak,
Bangkok 10500 Thailand
Tel: [phone] Fax:[phone]
NITTO KOHKI AUSTRALIA PTY. LTD.
77 Brandl St., Brisbane Technology Park,
Eight Mile Plains QLD 4113 Australia
Tel: [phone] Fax:[phone]
NITTO KOHKI (SHANGHAI) CO., LTD.
Room1506, suite C, Orient International Plaza,
NO85 LouShanGuan Road,Shanghai, 200336, CHINA
Tel: [phone] Fax:[phone]
NITTO KOHKI CO., LTD.,
SHENZHEN REPRESENTATIVE OFFICE
2005C Shenzhen ICC Tower, Fuhuasanlu 168, Futian District,
Shenzhen, Guangdong, 518048 China
Tel: [phone] Fax:[phone]
Printed in JAPAN TQ12758-2