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SPECIFICATIONS AND DIMENSIONS

6.

6 - 1  Speci

¿

cations

Model

IH - 300

Maximum Motor Rotation 
Speed

Less than 40,000min

-1

 (rpm) 

Appropriate Motor

ENK - 410S, ENK - 250T
IM - 300, IM - 301

Emax EVOlution

ROTUS

Vibration Level m / s

2

Less than 2.5m / s

2

Weight

62g

Noise Level at 1m distance

Less than 70dB (A)

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

<Option>

Collet
(CHH - 

□□

)

ȭ

1.0mm, 

ȭ

1.5mm, 

ȭ

1.6mm, 

ȭ

2.0mm, 

ȭ

2.35mm, 

ȭ

2.5mm, 

ȭ

3.0mm, 

ȭ

3.175mm

6 - 2 Outside View

Fig. 2

CONNECTION OF THE ATTACHMENT TO THE MOTOR

7.

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 to 
preventing contaminants from entering the motor or Attachment. 

   CAUTION

Tighten

Transmission Clutch 

Align the thread on the front end of the 
motor and the rear of the 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 
approximately two threads before 
stopping. DO NOT FORCE THE 
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) (Fig. 3).

Fig. 3

CHANGING THE CUTTING TOOL

8.

Do not open and close the collet without cutting tools.

Do not rotate the motor when replacing the cutting tools (when turning the 
lever vertically toward a arrow in Fig. 4). This will cause damage to the motor 
or the Attachment. 

   CAUTION

Turning the lever vertically toward a arrow in Fig. 4 (counterclockwise) to loosen the 
collet, the cutting tools can be replaced.

Return the lever vertically to close the collet.

  * If it is hard to remove the collet or the cutting tools, use the provided wrench.

When putting high torque by cutting tools with the large cutting tool diameter, or when 
turning toward closing the collet, there is a case where the collet or cutting tools can 
not be put off by hand. If so, align the nose's slit and spindle's wrench position, and 
put a L shaped wrench to 

¿

x the spindle. Set the provided wrench (5.1mm) to the 

collet, turning the lever vertically. And turn the wrench counterclockwise to release the 
collet or the cutting tools (Fig. 5).

CLOSE

Loosen 

OPEN

Loosen

Wrench (5.1mm) 

L Shaped Wrench

Turning left (Counterclockwise)

(Detach the collet or the cutting tool)

In case of turning the 
lever vertically

REPLACING AND CLEANING OF THE COLLET

9.

Replacing of the collet
Turning the collet  left to detach the collet, 
turning the lever vertically (Fig. 6). Can
usually attach and detach the collet  by 
hand.  If the attach or detach of the cutting 
tool is dif

¿

cult, refer to " 8 CHANGING THE 

CUTTING TOOL *If it is hard to remove the 
collet or the cutting tools, use the provided 
wrench " section.

Cleaning of the collet
Release and clean the collet at least once a week not to loss it is precision. Coat oil 
lightly on the collet before putting the collet back into Attachment.

Loosen

Pull Out

Fig. 6

Contents are subject to change without notice.

2015.07.20   005 

  

Fig. 5

Fig. 4

Tighten

Loosen

Fig. 7

TROUBLESHOOTING

10.

Trouble

Cause

Inspection / Corrective Action

Spindle does not rotate 

or rotate smoothly.

The spindle ball bearings 

have been damaged.

Replace the ball bearings.

(Return to NAKANISHI dealer service.)

The motor has been 

damaged. 

The lever is OPEN 

position (Fig. 4).

Turn the lever position to CLOSE (Fig. 4).

Spindle does not 

run with the collet  

tightened.

(Lever is CLOSE 

position.) 

Cutting debris has 

contaminated the ball 

bearing, or the ball 

bearing is out burned.

Replace the ball bearings.

(Return to NAKANISHI dealer service.)

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 spindle ball bearings 

have been 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 inside of the spindle. 

The spindle ball bearings 

have been damaged.

Replace the ball bearings.

(Return to NAKANISHI dealer service.)

Collet is not OPEN or 

CLOSE.

Chucking system is 

broken.

Repair the chucking system.

(Return to NAKANISHI dealer service.)

The lever is not turned 

until OPEN or CLOSE 

position.

Turn the lever to OPEN or CLOSE

position.

If a problem or concern occur, please check the following items prior to consulting your 
dealer.

DISPOSAL OF THE ATTACHMENT

11.

When disposal of an Attachment is necessary, follow the instructions from your local 
government agency for proper disposal of industrial components.

Attachment and Adjustment of the collet 
(1) Turning the lever vertically. And turning the collet clockwise by 

¿

nger to the end to 

attach, while clutching the test bur or the using cutting tools into the collet.

(2) And turn the collet about 1 / 5 counterclockwise to adjust the cutting tool to pull out 

easily. In this case, about 0.1mm thinner of cutting tool can be used (Fig. 7).

13.3

59.9

ȭ

18.9 

ȭ

15.9

ȭ

17

  * The clutching of collet can be adjusted according to the above. When loosing the 

cutting tools, or not pulling it out, can be adjusted according to the above.

In case of using a brushless motor, refer to the Emax EVOlution Control Unit Operation 
Manual.
In case of using an air motor, refer to the ROTUS air motor and the Air Line Kit Operation 
Manuals. 

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