6. SPECIFICATIONS AND DIMENSIONS
Model
MFC - 300M
MFC - 300S
Maximum Motor Rotation Speed Less than 15,000min
-1
(rpm)
Applicable Motor
ENK - 410S, ENK - 250T (Emax EVOlution)
IM - 300, IM - 301 (ROTUS)
Vibration Level
Less than 2.5m / s
2
Weight
47g
50g
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
Collet
K - 252, K - 253
6 - 1 Speci
¿
cations
6 - 2 Outside View
< Option >
①
MFC - 300M
②
MFC - 300S
66.1
91.8
108.5
13.3
ȭ
6.8
ȭ
18.9
ȭ
6
9.5
4.8
ȭ
9.9
66.1
91.8
109.4
13.3
ȭ
6.9
ȭ
8.5
ȭ
18.9
7.2
13.8
ȭ
9.9
Fig. 2
Fig. 3
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 Attachment to the motor. This is critical to
preventing contaminants from entering the Attachment or motor.
CAUTION
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. 4).
Pin Wrench (K - 233)
Tighten
Transmission Cluch
Turn
Fig. 4
CHANGING THE CUTTING TOOL
8.
・
Tool shank diameter
1.6mm. NAKANISHI make a wide precision cutting tools.
Please select from our " Micro grinder & Tools Catarogu ".
・
Do not tighten the collet without inserting a cutting tool or dummy bur, as this
will result in damage to the collet.
CAUTION
①
Insert the chuck wrench into the back of the angle head and rotate the knob 1 / 4 turn
to release the cutting tool.
②
Insert a new cutting tool into the inside of the collet, and turn the knob of the chuck
wrench clockwise to
¿
x the cutting tool.
Loosen
Cutting Tool
Chuck release
Chuck Wrench
Prongs
Knob
Head
Fig. 5
REPLACING THE COLLET
9.
①
Remove the cutting tool according to the section " 8. CHANGING THE CUTTING
TOOL " procedure above.
②
Insert clutch at the edge of the chuck wrench into the head counterpart of the
Attachment. And turn the knob of the chuck wrench counterclockwise to remove the
collet.
③
Attach a new collet into the edge of the chuck wrench, and set the clutch of the chuck
wrench to the head counterpart, make 4 - 5 turns of knob clockwise.
④
Insert the cutting tool into the inside of the collet, and turn the knob of the chuck
wrench clockwise to
¿
x the cutting tool.
Collet
Fig. 6
APPLICATIONS
10.
For example, enable for removing edges inside small diameter holes (Fig 7). If the shank
of cutting tool for removing edges is cutting too long, attach the cutting tool to Attachment
only after trimming to the appropriate length.
ȭ
13
Smallest Diameter
MFC - 300
(M Type)
Fig. 7
TROUBLESHOOTING
11.
If a problem or concern occur, please check the following items prior to consulting your dealer.
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.
Replace the motor.
(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.)
DISPOSAL OF THE ATTACHMENT
12.
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.
2016
.
07
.
05
002
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.
5. FEATURES
①
MFC - 300M is the smallest 90
°
head available.
②
Best for removing edges & burrs or correction of drilled holes inside small diameter holes.
③
MFC - 300 is an Attachment for grinding axis for deep holes of special purpose for
shank diameter
ȭ
1.6mm.
Do not exceed the " Maximum Motor Rotation Speed " .
WARNING
