Nakanishi IR-310 User manual

OM-K0493E 002
Ring Type Attachment
OPERATION MANUAL
Thank you for purchasing the Ring Type Attachment " IR - 310 ". This Attachment
designed for powerful and delicate cutting and grinding, and made slim and light
weight for comfortable gripping. The Emax EVOlution control unit and motor or
ROTUS air motor are required to drive this Attachment. Read this and all the
associated component Operation Manuals carefully before use. Always keep this
Operation Manual in a place where a user can referred to for reference at any time.
1. CAUTIONS FOR HANDLING AND OPERATION
■ Read these warnings and cautions carefully and only use in the manner intended.
■ These warnings and cautions are intended to avoid potential hazards that could
result in personal injury to the operator or damage to the device. These are
classied as follows in accordance with the seriousness of the risk.
①This Attachment is designed for hand use. Never install this
Attachment or any hand tool on a machine such as a special
purpose machine, NC lathe or mill.
②
Do not touch the cutting tool while it is rotating. It is very dangerous.
③
Wear safety glasses, dust mask, and use a protective cover around
the Spindle whenever the Spindle is rotating.
④When installing a cutting tool, tighten the collet correctly and
check again the collet before use. Do not over-tighten the collet.
This may cause damage to the spindle.
⑤Do not use grindstones with an outside diameter over 15mm.
⑥
Do not exceed 13mm of overhang for mounted grindstones as shown
in Fig. 1. If the overhang must exceed 13mm, reduce the motor speed
in accordance with Table. 1.
⑦Do not use bent, broken, chipped, out of round or sub-standard
cutting tools as they may cause shatter or explode. The cutting
tool with cracked, bended may cause some injury to operator.
When using a new cutting tool, rotate it in a low speed and
increase speed gradually for safety.
⑧
Always operate cutting tools within the cutting tool manufacturer's
recommended speed limits. Use of a cutting tool higher than the
manufacturer's recommended speed limits could cause damage to
the spindle and injury to the operator.
⑨
Do not apply excessive force. This may cause tool slippage, tool
damage, injury to the operator, loss of concentricity and precision.
①Do not drop or hit this Attachment, as shock can damage to the
internal components.
②
Be sure to clean the collet, the spindle taper and threads before
replacing the cutting tool. If ground particles or metal chips stick
to the inside of spindle or the collet, damage to the collet or
spindle can occur due to the loss of precision.
③When cleaning an Attachment, stop the motor and remove dirt
with a brush or a cloth. Do not blow compressed air into the
Attachment. Foreign particles or cutting chips may get into the
ball bearings.
④Always clean the cutting tool shank before installing the tool in
the spindle.
⑤When sizing the correct collet size to the cutting tool shank
diameter, a tolerance of +0 〜
-
0.01mm is strongly recommended.
A tool shank within the +0〜
-
0.1mm range is mountable,
however, this may cause poor concentricity and or insufcient
cutting tool shank gripping force.
CAUTION
Overhang (mm）Max. Speed (min
-1
) (rpm)
20 N x 0.5
25 N x 0.3
50 N x 0.1
Table. 1 Overhang and Speed
*N=Max. Operating Speed with 13mm overhang.
13
Fig. 1
⑥Select suitable products or cutting tools for each application. Do
not exceed the capabilities of the Attachment or cutting tools.
⑦Keep everything in order not to place the rag which could be
caught near the hand tool.
⑧Stop operating immediately when abnormal rotation or any
unusual vibrations are observed. Afterwards, please check the
content of section " 10. TROUBLESHOOTING ".
⑨Always check if the cutting tool, collet is damaged before and after
operating.
⑩If the collet show signs of wear or damage, replace it before a
malfunction or additional damage occurs.
⑪No lubrication is required because grease impregnated ball
bearings are used.
⑫After installation, repair, initial operation, or long periods of non
operation, please carry out break-in as follow. Start rotating slowly
and over a short period of 5 - 10 minutes, increase speed gradually
until allowable maximum speed.
⑬Do not disassemble, modify or attempt to repair the Attachment.
Additional damage will occur to the internal components. Service
must be performed by NSK NAKANISHI or an authorized service
center.
CAUTION
2. BASIC PACKAGE
IR - 310 Attachment
・・1pc.
Collet
ȭ3.0mm (CHH - 3.0)* or
ȭ2.35mm (CHH - 2.35)
･･Each 1pc.
CHH - 2.35
Wrench (7 x 5.1) ･･1pc.
Pin Wrench (K - 233)
･･ 1pc.
L Shaped Wrench
･･ 1pc.
Operation Manual
・・1set
5.1
7
ྲྀᢅㄝ󰩣᭩
OPERATION MANUAL
3. WARRANTY
4. CONTACT US
We provide a limited warranty for our products. We will repair or replace the
products if the cause of failure is due to the following manufactures defects.
Please contact us or your local distributor for details.
①Defect in manufacturing.
②Any shortage of components in the package.
③Where damaged components are found when initially opening the package.
(This shall not apply if the damage was caused by the negligence of a customer.)
*The collet is attached to the Attachment.
Company Name
Business Hours
U.S. Toll Free No.
Telephone No.
Fax No.
Web Address
:
Industrial Div.
: 8:30am to 17:00pm (CST)
(closed Saturday, Sunday and Public Holidays)
: 800-585-4675
: 847-843-7664
: 847-843-7622
: www.nskamericacorp.com
Contact UsContact Us
For U.S. Market
Company Name
Business Hours
Telephone No.
e-mail Address
:
: 8:00am to 17:00pm
(closed Saturday, Sunday and Public Holidays)
: [phone]
: [email protected]
For Other Markets
WARNING
Class Degree of Risk
WARNING
A safety hazard could result in bodily injury or
damage to the device if the safety instructions
are not properly followed.
CAUTION
A hazard that could result in light or moderate
bodily injury or damage to the device if the
safety instructions are not followed.
Table. 2 Packing List Contents
For your safety and convenience when purchasing our products, we welcome
your questions.
If you have any questions about operation, maintenance and repair of the
product, please contact us.
When opening the package, check if it includes all items listed in " Table. 2
Packing List Contents ".
In the event of any shortage, please contact either NAKANISHI (see the
" 4.
CONTACT US " section) or your local dealer.

6. SPECIFICATIONS AND DIMENSIONS
6 - 1 Specications
Model IR - 310
Maximum Allowable Motor Speed
Less than 40,000min-1 (rpm)
Applicable Motor ENK - 410S / ENK - 250T (Emax EVOlution)
IM-301 (ROTUS air motor)
Vibration Level Less than 2.5m/s2
Weight 92g
Noise Level at 1m distance Less than 70dB（A）
<Option>
Collet
（CHH- □□）
ȭ1.0mm, ȭ1.5mm, ȭ1.6mm, ȭ2.0mm, ȭ2.35mm
ȭ3.0mm, and ȭ3.175mm
6 - 2 Outside View
13.3
（78.7）
（65.4）
ȭ20
ȭ12.8
ȭ13.3
Fig. 2
7. CONNECTION OF THE ATTACHMENT TO THE MOTOR
CAUTION
Make sure your hands and all interlocking parts of the Attachment
and motor are clean before connecting the motor to the Attachment.
This is critical in preventing contaminants from entering the motor
or Attachment.
Align the thread on the front end of the
motor and the rear end Attachment,
and turn the Attachment clockwise.
If the drive shaft of the motor does
not engage properly to the drive dog
on the Attachment, it may only turn
aprroximately two threads before
stopping. DO NOT FORCE THEM
TOGETHER. Loosen the Attachment
from the motor, rotate the Attachment
shaft by hand then re-try. The drive
shaft and the drive dog must be fully
engaged. When fully engaged, secure
the motor and Attachment using the
provided pin wrench (K - 233).
Transmission Clutch
Fig. 3
8. CHANGING THE CUTTING TOOL
Turn the ring to the direction of OPEN, and the
collet will be loosened and the bur could be
removed. Turn the ring to the direction of LOCK,
and the collet will be fastened and the cutting
tool could be mounted. Make 'clank' when the
ring is turned (Fig. 4).
LOCK
OPEN
Fig. 4
②Cleaning the collet
Keep the collet clean. It.is recommended
to clean the collet at least a week. Coat oil
lightly on the collet before putting it back
into the Attachment.
③Mounting and adjusting the collet.
Turn the cutting tool / the dummy bur
clockwise to stop with the ring opened.
Return it about 1/5 ~ 1/4 to remove the cutting
tool / the dummy bur smoothly (Fig. 7).

Adjust the cutting tool referring to ③, if it is easy and/or difficult to remove
the cutting tool.
ձTurn until finger-tight
ղ1/5 turnղ1/5 turn
CAUTION
・When Ring is OPEN position, do not rotate the motor. This may
cause breakdown to the motor and Attachment. Be sure to conrm
the ring position is LOCK position, before rotating the motor.
・ Do not ring turn to the LOCK position, without inserting a cutting
tool or dummy bur, as this will result in damage to the collet.
10. TROUBLESHOOTING
If a problem or concern occur, please check the following items prior to consulting
your dealer.
Trouble Cause Inspection / Corrective Action
Spindle does not
run with the
collet tightened.
(Ring is LOCK
position)
Cutting debris has
contaminated the ball
bearing, or the ball bearing
is out burned.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Spindle does not
rotate or rotate
smoothly.
The spindles ball bearings
are damaged.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
The motor has been
damaged.
Replace the motor.
(Return to NAKANISHI dealer service.)
The ring is OPEN position. Turn the ring to LOCK position.
Overheating
during rotation.
Cutting debris has
contaminated the ball
bearing, and the ball
bearings are damaged.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Abnormal
vibration or noise
during rotation.
Using bent cutting tool. Replace the cutting tool.
Cutting debris has
contaminated the ball
bearings.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
The spindles ball bearings
are damaged.
Cutting tool
slippage.
Collet is not correctly
installed.
Check and clean the collet.
Reinstall the collet and re-tighten.
Check the accuracy.
The collet is worn. Replace the collet.
High run-out. Cutting tool is bent. Replace the cutting tool.
The collet is worn. Replace the collet.
Inside of the spindle is
worn.
Replace the spindle shaft.
(Return to NAKANISHI dealer service.)
Contaminants inside
the collet or the spindle.
Clean the collet and the insid e of the
spindle.
The spindles ball bearings
are damaged.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
It is not possible
to mount / remove
the cutting tool.
Chucking system is broken. Repair the chucking system.
(Return to NAKANISHI dealer service.)
The ring is not turned until
OPEN or LOCK position.
Turn the ring to OPEN or LOCK position.
The cutting tool is xed to
the collet.
Remove the cutting tool by using wrench.
(Refer to section
" 9.
REPLACING AND
CLEANING COLLET
"
)
11. DISPOSAL OF THE ATTACHMENT
When disposal of an Attachment is necessary, follow the instructions from your
local government agency for proper disposal of industrial components.
Contents are subject to change without notice.
2015.05.20 003
Fig. 7
9. REPLACING AND CLEANING COLLET
①Replacing the collet
Turn the collet counterclockwise with the ring opened, and the collet will be
removed (Fig. 5).
If it is hard to remove the collet, use the provided wrench.

The collet might be fastened and the cutting tool could not be removed, if the
cutting tool with large diameter is used under a high torque. Align the nose's
slit and Attachment's wrench position, and put an L shaped wrench to x the
Attachment. Open the ring, remove the dust proof cap to the tip of the collet
and turn the collet counterclockwise with a wrench for replacing collets to
remove it (Fig. 6).
Fig. 5
Loosen
Loosen
Fig. 6
5. FEATURES
①Ring type (twist) chucking system makes it easier to change tools.
②The slim style, light weight Attachment is the best suited instrument for
delicate nish work.
Temperature Humidity Atmospheric
Pressure
Operation Environment 0 - 40°C
MAX.75%
(No condensation) 800 - 1,060hPa
Transportation and Storage
Environment -10 - 50°C 10 - 85%
500 - 1,060hPa