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IH - 300

Lever Type Attachment

Thank you for purchasing the Lever Type Attachment " IH - 300 ". This Lever Type 
Attachment designed for using the Emax EVOlution motor or Espert 500 motor. The Emax 
EVOlution Control Unit and  Motor / ROTUS Air Motor and Air Line Kit are required to 
drive this Lever Type 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.

OPERATION MANUAL

OM-K0153E 002

CAUTIONS FOR HANDLING AND OPERATION

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.

1.

 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.

This Attachment is designed for hand use. Never install this Attachment or 
any hand cutting 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 
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 

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

   WARNING

Table. 1  Overhang and Speed

Overhang (mm)

Max. Speed (min

-1

) (rpm)

20

N x 0.5

25

N x 0.3

50

N x 0.1

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

13

Fig. 1

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 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 hand tool. 

   CAUTION

Stop operating immediately when abnormal rotation or unusual vibrations 
are observed. Immediately, 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

Attachment

・・

1pc.

Collet* 

Wrench (7 x 5.1)

・・

1pc.

5.1

7

Pin Wrench (K - 233)

・・

1pc. L Shaped Wrench

・・

1pc.

Operation Manual

・・

1set

ྲྀᢅㄝ᫂᭩

OPERATION MANUAL

ȭ

3.0mm (CHH - 3.0) or 

ȭ

3.175mm

 

(CHH - 3.175) and 

ȭ

2.35mm (CHH - 2.35)

・・

1pc. Each.

(For U.S. market 

ȭ

3.175mm (CHH - 3.175)) and 

ȭ

2.35mm (CHH - 2.35) 

The collet is attached to the Attachment.

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. 

Table. 2  Packing List Contents

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

FEATURES

5.

The cutting tools can be surely replaced by " Lever Type Chucking ".

This Attachment is a slim, light weight and best for micro-drilling or micromillimg.

This Attachment can be used for Air Motor with Chip Air Mechanism (IM - 300).

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