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6 - 2 Outside View
① IC - 300
12.8
57.3
13.3
70.6
Fig. 2
③ KC - 300
（61.9）
13.3
（75.2）
Fig. 4
7. CONNECTION OF THE ATTACHMENT TO THE MOTOR
CAUTION
Make sure your hands and all interlocking parts of the motor and the Attachment are clean before
connecting the Attachment to the motor. This is critical in preventing contaminants from entering the
Attachment or the motor.
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 bur 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 wrench (Refer to the Table. 3).
Transmission Clutch
Fig. 6 IC - 300 / KC - 300 to the motor
Table. 3
Connected Attachment
IC - 300 / KC - 300
Wrench to use
Pin Wrench (K - 233)
8. CHANGING THE CUTTING TOOL
CAUTION
Do not tighten the collet without inserting a cutting tool or dummy bur, as this will result in damage to
the collet.
RECOMMENDATION
Please set the cutting tools to minimize the overhang amount. 13mm is the maximum amount of
overhang to maintain high accuracy and safety.
① Insert the rear of the Attachment Head into the Collet Wrench.
② Lightly hold the Collet Wrench and Attachment with ngers. Place the Wrench (4mm) to the collet, slowly turn
the wrench (4mm) counterclockwise to secure.
③ Turn the wrench (4mm) counterclockwise to loosen the collet with remove the cutting tool.
* The cutting tool cannot be removed by turning the collet with the wrench, unless the collet is secured to the
Collet Wrench.
In this case, repeat procedure ① - ② to secure the collet to the Collet Wrench.
④ When mounting the cutting tool, turn the wrench (4mm) clockwise to tighten the collet after securing the collet
to the Collet Wrench, then secure the cutting tool.
Attachment
Collet Wrench
Fig. 7
② EIC - 300
12.8
64.3
11.3
75.6
Fig. 3
④ EKC - 300
（68.9）
11.3
（80.2）
Fig. 5
Pin Wrench
Tighten
Turn
EIC - 300 / EKC - 300
Wrench (20 x 24)
Loosen
Wrench
Tighten
Collet Wrench
Fig. 8
9.
REPLACING THE COLLET
① Remove the cutting tool as detailed in Section " 8. CHANGING THE CUTTING TOOL " procedure and remove
cutting tool, rotate the collet counterclockwise with ngers until the collet is disconnected.
Remove the collet.
② Insert the new collet into the spindle and turning it clockwise.
Collet Wrench
10.
HOW TO USE THE REDUCER AND THE EXTENSION JOINT
<Reducer>
WARNING
・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.
CAUTION
The Rubber Pads or Felt Disks are cutting tools to be used in low rotation. Be sure to mount the
reducer to the Attachment when using the Rubber Pads or Felt Disks.
Table. 4
Connected Attachment
IC - 300 / KC - 300
RG - 01
Applicable Reducer
RG - 02
<Extension Joint>
This is a extension joint to be connected between a motor and an Attachment ( IC - 300 / KC - 300) to extend the
total length of the Attachment.
* The extension joint (CN - 01) cannot be used in mounting to the Attachment (EIC - 300 / EKC - 300).
Angle Attachment
Reducer・
Extension Joint
11.
TROUBLESHOOTING
If a problem or concern occur, please check the following items prior to consulting your dealer.
Trouble
Cause
Attachment does not
The spindle ball bearings have been
rotate or rotate smoothly.
damaged.
The motor has been damaged.
Overheating during
Cutting debris has contaminated the
rotation.
ball bearing, and the ball bearings
are damaged.
Abnormal vibration or
The cutting tool shank is bent.
noise during rotation.
Cutting debris has contaminated the
ball bearings.
The spindle ball bearings have been
damaged.
Cutting tool slippage.
Collet is not correctly installed.
The collet is worn.
High run-out.
Cutting tool is bent.
Collet is not correctly installed.
The collet is worn.
Inside of the spindle is worn.
Contaminants inside the collet or
the spindle.
The spindle ball bearings have been
damaged.
In case of using a brushless motor, refer to the Emax EVOlution Control Unit Operation Manuals.
In case of using an air motor, refer to the ROTUS air motor and the Air Line Kit Operation Manuals.
12. 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.
Pull Out
Collet
Loosen
Fig. 9
EIC - 300 / EKC - 300
ERG - 01B
Motor
Fig. 10
Inspection / Corrective Action
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Replace the motor.
(Return to NAKANISHI dealer service.)
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Replace the cutting tool.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Check and clean the collet.
Reinstall the collet and re-tighten. Check the
accuracy.
Replace the collet.
Replace the cutting tool.
Secure the collet correctly.
Replace the collet.
Replace the spindle shaft.
(Return to NAKANISHI dealer service.)
Clean the collet and the inside of the taper and
spindle.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
2015.12.10 01
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