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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 
classied as follows in accordance with the seriousness of the risk.

This 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.

Do not touch the cutting tool while it is rotating. It is very dangerous.

Wear safety glasses, dust mask, and use a protective cover around 
the Spindle whenever the Spindle is rotating.

When 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.

Do not use grindstones with an outside diameter over 

•

15mm.

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.

Do 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.

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.

Do not apply excessive force. This may cause tool slippage, tool 
damage, injury to the operator, loss of concentricity and precision.

Do not drop or hit this Attachment, as shock can damage to the 
internal components.

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.

When 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.

Always clean the cutting tool shank before installing the tool in 
the spindle.

When 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 insufcient 
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

Select suitable products or cutting tools for each application. Do 
not exceed the capabilities of the Attachment or cutting tools.

Keep everything in order not to place the rag which could be 
caught near the hand tool. 

Stop operating immediately when abnormal rotation or any 
unusual vibrations are observed. Afterwards, please check the 
content of section " 10. TROUBLESHOOTING ".

Always check if the cutting tool, collet is damaged before and after 
operating.

If the collet show signs of wear or damage, replace it before a 
malfunction or additional damage occurs.

No lubrication is required because grease impregnated ball 
bearings are used.

After 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.

Do 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

ȭ

3.0mm (CHH - 3.0)

* or

 

ȭ

2.35mm (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

ྲྀᢅㄝ᫂᭩

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.

Defect in manufacturing.

Any shortage of components in the package.

Where 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 Us

Contact 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)
:  +81 (0) 289-64-3520
:  [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.

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