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OPERATION MANUAL

002

OM-K0032E

Thank you for purchasing the 90

°

/ 50

°

 Angle Attachment " IC - 300

EIC - 300

KC - 300

EKC - 300 ". This 

Attachment is designed for polishing corners and internal surfaces and 

À

at surfaces with rubber pad. The Emax 

EVOlution control unit and motor, Espert 500 control unit and motor, and ROTUS air motor and Air Line Kit 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.

 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.

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.

CAUTIONS FOR HANDLING AND OPERATION

1.

The Attachment is designed for hand use. Never install the Attachment or any hand tool on a 
machine such as a special purpose machine, NC lathe or mill.

Do not exceed the " Maximum Allowable Motor Rotation Speed " (Refer to " 6 - 1  Speci

¿

cations "). 

When sensing that the  Attachment and motor / reducer, are overheated during operation, reduce 
the working force or the motor rotation speed, or stop the operation until the Attachment cools 
down before restarting.

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 Attachment whenever the 
Attachment 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 

•

20mm.

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 cutting tool slippage, cutting tool damage, injury to 
the operator, loss of concentricity and precision.

   WARNING

* N = Max. Operating Speed with 13mm overhang.

Overhang (mm)

Max. Speed (min

-1

)

20

N x 0.5

25

N x 0.3

50

N x 0.1

Table. 1 Overhang and Speed

13

Fig. 1

KC - 300 and EKC - 300 are rotates the opposite direction of motor runs so that be aware of this 
fact at the time of use.

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 Attachment and remove debris with a soft brush or a cloth. 
Do not blow air into the Attachment with compressed air as foreign particles or cutting debris may 
get into the ball bearing. 

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

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 Attachment. 

Stop operating immediately when abnormal rotation or unusual vibrations are observed. 
Immediately, please check the content of section " 11. TROUBLESHOOTING ".

Always check if the cutting tool and collet are 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 Maximum Allowable Motor Rotation 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.

When using this Attachment for mass production, please consider the purchase of an additional 
Attachment to be used as a back-up in case of emergency. 

   CAUTION

BASIC PACKAGE

2.

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. 

Pin Wrench (K - 233)

・・

1pc.*

2

Collet  

ȭ

3.0mm (CHC - 3.0) or 

ȭ

3.175mm (CHC - 3.175) 

・・

1pc.*

3

Operation Manual

・・

1set

Rubber Pad

ȭ

10mm (64101)

・・・

1pc. 

Rubber Pad
 

ȭ

20mm (64102)

・・・

1pc. 

Rubber Pad

ȭ

30mm (64103)

・・・

1pc. 

Sandpaper Disk
#180 (64133) , #600 (64137)

・・

5pcs. Each.

For Rubber Pad

ȭ

10mm (64101)

Sandpaper Disk
#180 (64153) , #600 (64157)

・・

5pcs. Each.

For Rubber Pad 

ȭ

20mm (64102)

Sandpaper Disk
#180 (64173) , #600 (64177)

・・

5pcs. Each.

For Rubber Pad

ȭ

30mm (64103)

*1  The Wrench (20 x 24)  is standard accessories of the EIC - 300 and EKC - 300.
*2  The Pin Wrench (K - 233) is standard accessories of the IC - 300 and KC - 300.
*3  The collet is attached to the Attachment.

ྲྀᢅㄝ᫂᭩

OPERATION MANUAL

WARRANTY

3.

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) 

CONTACT US

4.

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. 

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

SPECIFICATIONS AND DIMENSIONS

6.

This Attachment is capable of various type of polishing, grinding, lapping, etc. by using the specialized tool.

This Attachment is capable of various type of quick polishing, grinding, etc. of 

À

at surface or edge face by using 

the variety disk.

FEATURES

5.

Model

IC - 300

KC - 300

EIC - 300

EKC - 300

Reduction Ratio

3 / 4

Maximum Allowable Motor Rotation 
Speed

Less than 30,000min

-1

 (rpm)

Maximum Motor Rotation Speed at 
the Cutting Tool

Less than 22,500min

-1

 (rpm)

Applicable Motor

Emax EVolution Motor
(ENK - 410S 

 ENK - 250T)

ROTUS Air Motor
(IM - 300 

 IM - 301)

Espert 500 Motor
 (ENK - 500C 

 ENK - 500T)

Weight

45g

54g

Vibration Level

Less than 2.5m / s

2

Noise Level at 1m distance

Less than 70dB (A) 

6 - 1  Speci

¿

cations

* KC - 300 and EKC - 300 are rotate the opposite direction of motor runs so that be aware of this fact at time of use.

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

Collet (CHC - 

□□

)

ȭ

1.6mm, 

ȭ

2.35mm, 

ȭ

3.0mm, 

ȭ

3.175mm

<Option>

   WARNING

Do not exceed the " Maximum Allowable Motor Rotation Speed ". 

When sensing that the Attachment and motor / reducer, are overheated during operation, reduce the 
working force or the motor rotation speed, or stop the operation until the Attachment cools down 
before restarting.

Table. 2 Packing List Contents

Attachment

・・

1pc.

Collet Wrench (K - 231)

・・

1pc.

Wrench (20 x 24)

・・

1pc.*

1

20

24

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