Nakanishi MFC-300 User manual

M FC - 300 (
M
Type6Type)
90° Mini-Angle Attachment
Thank you for purchasing the 90° Mini-Angle Attachment " MFC - 300 ". This Attachment
designed for small hole ID ¿nishing and deburring.
The Emax EVOlution Control Unit, Brushless Motor or ROTUS Air Motor / 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.
OPERATION MANUAL 003
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.
①This 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.
②Do not exceed the " Maximum Motor Rotation Speed " (Refer to " 6 - 1
Speci¿cations ").
③Be sure to connect the reducer to the Attachment when using the
Attachment.
When not connecting the reducer to the Attachment may cause damage to
the inside components and short life of the Attachment.
④Do not touch the cutting tool while it is rotating. It is very dangerous.
⑤Wear safety glasses, dust mask, and use a protective cover around the
Attachment whenever the Attachment is rotating.
⑥When 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.
⑦Do not use grindstones with an outside diameter over ₥40mm.
⑧Do 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.
⑨Do 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.
⑩Always 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.
⑪Do 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
①Do not drop or hit this Attachment, as shock can damage to the internal
components.
②Be 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.
③When 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.
④Always clean the cutting tool shank before installing the cutting tool in the
spindle.
CAUTION
⑤When 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.
⑥Select suitable products or cutting tools for each application. Do not
exceed the capabilities of the Attachment or cutting tools.
⑦Keep everything in order not to place the rag which could be caught near
the hand tool.
⑧Stop operating immediately when abnormal rotation or unusual vibrations
are observed. Immediately, please check the content of section
" 11. TROUBLESHOOTING ".
⑨Always check if the cutting tool, collet is damaged before and after
operating.
⑩If the collet show signs of wear or damage, replace it before a malfunction
or additional damage occurs.
⑪No lubrication is required because grease impregnated ball bearings are
used.
⑫After 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.
⑬Do 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
2. BASIC PACKAGE
3. WARRANTY
4. CONTACT US
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.
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.
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.
* M Type : ȭ1.6mm (K - 253)・・1pc. S Type : ȭ1.6mm (K - 252)・・1pc.
The collet is attached to the Attachment.
Table. 2Packing List Contents
Attachment・・1pc. Collet* Chuck Wrench
(K - 232)・・1pc.
Pin Wrench
(K - 233)・・1pc. Operation Manual ・・1set
ྲྀᢅㄝ󰩣᭩
OPERATION MANUAL
①Defect in manufacturing.
②Any shortage of components in the package.
③Where damaged components are found when initially opening the package
(This shall not apply if the damage was caused by the negligence of a customer).
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 UsContact 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)
: [phone]
: [email protected]
For Other Markets
OM-K0195E

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 / s2
Weight 47g 50g
Noise Level at 1m distance Less than 70dB (A)
Temperature Humidity Atmospheric Pressure
Operation Environment 0 - 40°CMAX.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 >
①MFC - 300M
②MFC - 300S
66.1
91.8
108.5
13.3
ȭ6.8
ȭ18.9
ȭ6
9.5
4.8
ȭ9.9

66.1
91.8
109.4
13.3
ȭ6.9
ȭ8.5
ȭ18.9
7.2
13.8
ȭ9.9
Fig. 2
Fig. 3
CONNECTION OF THE ATTACHMENT TO THE MOTOR7.
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 TOOL8.
・ 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
①Insert the chuck wrench into the back of the angle head and rotate the knob 1 / 4 turn
to release the cutting tool.
②Insert 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 COLLET9.
①Remove the cutting tool according to the section " 8. CHANGING THE CUTTING
TOOL " procedure above.
②Insert 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.
③Attach 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.
④Insert 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
APPLICATIONS10.
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.
ȭ13
Smallest Diameter
MFC - 300
(M Type)
Fig. 7
TROUBLESHOOTING11.
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 ATTACHMENT12.
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
①MFC - 300M is the smallest 90°head available.
② Best for removing edges & burrs or correction of drilled holes inside small diameter holes.
③MFC - 300 is an Attachment for grinding axis for deep holes of special purpose for
shank diameter ȭ1.6mm.
Do not exceed the " Maximum Motor Rotation Speed " .
WARNING