Nakanishi NRR3060-QC User manual

取扱説明書 / OPERATION MANUAL
日本語 : P1 - P14 / English : P17 - P31
NRR3060-QC
クイックチェンジスピンドル / Quick Change Spindle
OM-K0628 002

ENGLISH
17
Thank you for purchasing the Quick Change Spindle " NRR3060 - QC ". This Spindle is designed for
grinding, small diameter drilling and milling, etc. The E3000 CONTROLLER and Air Line Kit, brushless
motor are required to drive this Spindle. 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.
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 Spindle is not a hand tool. It is designed to be used on CNC machines or special
purpose machines.
②Do not touch the cutting tool while it is running. It is very dangerous.
③Wear safety glasses, dust mask, and use a protective cover around the Spindle
whenever the Spindle is rotating.
④Never connect, disconnect or touch the Power Cord Plug or Motor Cord Plug with wet
hands. This may cause an electric shock.
WARNING
CONTENTS
1. CAUTIONS FOR HANDLING AND OPERATION ········································· P17
2. BASIC PACKAGE·················································································· P19
3. WARRANTY ························································································· P20
4. CONTACT US······················································································· P20
5. FEATURES··························································································· P20
6. SPECIFICATIONS AND DIMENSIONS ······················································ P21
7. CONNECTION OF THE SPINDLE TO THE MOTOR····································· P22
8. CHANGING THE TOOL AND REPLACING THE COLLET····························· P22
9. REPLACING THE COLLET HOLDER························································ P24
10. INSTALLATION OF THE SPINDLE ··························································· P26
11. BREAK-IN PROCEDURE········································································ P29
12. CAUTIONS WHEN USING GRINDSTONES AND TOOLS ····························· P29
13. TROUBLESHOOTING············································································ P30
14. DISPOSAL OF THE SPINDLE·································································· P31

18
⑥Never operate or handle the Spindle and brushless motor until you have thoroughly
read the Operation Manuals and safe operation has been con¿rmed.
1) To prevent injuries / damages, check the Spindle, brushless motor and cutting tool
for proper installation, before operating the Spindle and brushless motor.
2) Before disconnecting the Spindle and brushless motor, always turn the control
power off and turn the compressed air supply to the CONTROLLER off. Then it is
safe to remove the Spindle and brushless motor.
⑥When installing a Spindle to a ¿xed base, make sure the ¿xed base is grounded in
order to avoid the risk of an electric shock
⑦Stop the brushless motor prior to operating the lever. If lever operation is performed
during spindle rotation, contact with internal components will damage the spindle.
⑧Make sure that lever position is LOCK before rotating with mounting cutting tool.
⑨Ensure that the mounted the collet holder to the Spindle before rotate the Spindle.
⑩When installing a tool in the collet holder, tighten the collet correctly then re-check the
collet and collet nut before operating. Do not overtighten the collet. This may cause
damage to the collet holder.
⑪Do not use bent, broken, chipped, out of round or sub-standard tools, as this may
cause them to shatter or explode. Tools with fractures or a bent shank will cause injury
to the operator. When using a new tool, rotate it in a low speed and increase speed
gradually for safety.
⑫Do not exceed the maximum recommended allowable tool speed. For your safety, use
speeds below the maximum allowable speed.
⑬Do not apply excessive force. This may cause tool slippage, tool damage, injury to the
operator or loss of concentricity and precision.
WARNING
①Do not drop or hit this Spindle, as shock can damage to the internal components.
②Do not connect this Spindle to the reduction gear. This may cause collet breakage by
overload.
③Make sure the inner face of the spindle and taper surfaces of the collet holder are clean
(Clean them if debris is found.) mounting or before replacing the collet holder.
Ground particles or metal chips stuck to the surface will cause run-out or damage to
the collet and spindle. Loss of concentricity will cause spindle damage due to the lack
of precision.
④When cleaning a Spindle, stop the brushless motor and remove debris with a soft
brush or a cloth. Do not blow air into the dust proof cover area (refer to section " 6 - 2
Outside View " ) with compressed air as foreign particles or cutting debris may get into
the ball bearing.
⑤When replacing the tool, make sure the tool shank, collet, collet nut, and inner face of
the collet holder are clean. If ground particles or metal chips stick to the inside of the
collet, damage to the collet holder or spindle can occur due to the loss of precision.
⑥ When sizing the correct collet size to the tool shank diameter, a tolerance of +0 〜
-
0.01mm
is strongly recommended.
A tool shank within the +0 〜
-
0.1mm range is mountable, however, this may cause poor
concentricity and or insuf¿cient tool shank gripping force.
CAUTION

ENGLISH
19
⑦
Select suitable products or tools for all applications. Do not exceed the capabilities of the
Spindle tools.
⑧ Do not stop the supplied cooling air to the brushless motor during operation of the machine.
Removing the air pressure from the brushless motor causes a loss of purging, allowing the
Spindle to ingest coolant and debris. This will cause damage to the Spindle.
⑨Carefully direct coolant spray to the tool. Do not spray directly on the Spindle body
and collet holder. If large amount spray directly on the Spindle and collet holder, it may
cause excess load of the motor rotation with loss of durability to the Spindle.
⑩Stop working immediately when abnormal rotation or unusual vibration are observed.
Immediately, please check the content of section " 13 TROUBLESHOOTING ".
⑪Always check if the tool, collet, collet nut, connection hose and supply air hose for
damaged before and after operating.
⑫If the collet, collet nut or the collet holder show signs of wear or damage, replace them
before a malfunction or additional damage occurs.
⑬After installation, repair, initial operation, or long periods of non operation, please
refer to section " 11 BREAK-IN PROCEDURE " detailed in Table. 2. When checking the
Spindle, no vibration or unusual sound should be observed during rotation.
⑭Do not disassemble, modify or attempt to repair this Spindle. Additional damage will
occur to the internal components. Service must be performed by NSK NAKANISHI or
an authorized service center.
⑮When using this Spindle for mass production, please consider the purchase of an
additional Spindle to be used as a back-up in case of emergency.
CAUTION
* The collet holder, collet and collet nut are sold separately.
BASIC PACKAGE
2.
When opening the package, check if it includes all items listed in " Table. 1 Packing List Contents ".
In the event of any shortage, please contact either NAKANISHI (see the " 4. CONTACT US " section)
or your local dealer.
Table. 1 Packing List Contents
Spindle・・1pc. Wrench (22 x 27)・・1pc.
27
22
Inspection Card・・1pc.
᳨ᰝᡂ⦼⾲
Inspection Card
Operation Manual・・1set
ྲྀᢅㄝ󰩣᭩
OPERATION MANUAL

20
WARRANTY3.
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.
(1) Defect in manufacturing.
(2) Any shortage of components in the package.
(3) 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 US4.
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 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
FEATURES5.
①This Spindle features a lever type chucking system, which facilitates the replacement of the collet
holder by lever rotation.
②The spindle housing is made from precision ground, hardened, stainless steel (SUS) with a
mounting outside diameter of ȭ30mm.
③There are 2 types of collet holders. Various sizes of mounting collets are available depending on
the collet holder used (CHK 0.5mm - 6.35mm or CHA 0.5mm - 4.0mm).

ENGLISH
21
SPECIFICATIONS AND DIMENSIONS6.
6 - 1 Speci¿cations
Model NRR3060 - QC
Maximum Motor Rotation Speed 60,000min-1 (rpm)
Spindle Accuracy Less than 1μm
Lever Rotation - Rotation Angle 90°
Applicable Motor
*
This Spindle can not use the reduction gear.
EM - 3060, EM - 3060J, EM - 3030J
Applicable Collet Holder QC3 - A (For Collet CHA Type）
QC3 - K (For Collet CHK Type）
Weight 570g
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 Holder QC3 - A QC3 - K
Collet CHA - □□ CHK - □□
ȭ0.5mm - ȭ4.0mm in
0.1mm increments and
ȭ2.35mm, ȭ3.175mm
ȭ0.5mm - ȭ6.0mm in
0.1mm increments and
ȭ2.35mm, ȭ3.175mm,
ȭ4.76mm, ȭ6.35mm
Collet Nut CHN - A K - 265
Wrench 9 x 11, 8 x 5
(1pc. Each. Required)
12 x 14
(2 pcs. Required.）
Preset Adapter QC3 - ADP
＜Option ＞
(60)
14.8
(20.1)
0.5 (2.9)
QC3-A Dust Proof Cover Area
ȭ11.8
ȭ15.4
QC3-K Dust Proof
Cover Area


ȭ30
ȭ15.9
ȭ18.8
20 13
104.8
(55.2) 29.6
(2.9)
(24.3)
0.5
ȭ38
ȭ30
6 - 2 Outside View
Fig. 1

22
CONNECTION OF THE SPINDLE TO THE MOTOR7.
・Make sure your hands and all interlocking parts of the Spindle and brushless motor are
clean before connecting the Spindle to the brushless motor. This is critical in preventing
contaminants from entering the Spindle or brushless motor.
・When connecting the Spindle to the brushless motor, it is best to hold the brushless
motor and Spindle in a vertical position. Carefully connect by threading the brushless
motor on the Spindle and avoid mis-alignment, as this will cause damage to the
brushless motor and or Spindle drive.
CAUTION
27
27
Transmission Clutch
Turn
Tighten
Dust Proof Cover
Align the threads on the front end of the
brushless motor and the rear end of the
Spindle, then turn the Spindle clockwise. If the
drive shaft of the brushless motor does not
engage the drive dog on the Spindle smoothly,
DO NOT FORCE THEM TO SEAT. Tighten the
Spindle after rotating the Dust Proof Cover by
hand to engage the drive shaft and the drive
dog. Use the provided 27mm wrenches for
¿nal tightening of the Spindle to the brushless
motor.
Fig. 2
CHANGING THE TOOL AND REPLACING THE COLLET8.
・When installing the collet into the collet nut, be sure to fully engage the latch inside the
collet nut to the groove on the collets outer diameter area. In addition, remember that
if the collet is attached without being engaged with the latch of the collet nut, the collet
cannot be removed and this may cause damage to the collet or the Spindle.
・Do not tighten the collet without inserting a tool or dummy bur, as this will damage the
collet, Spindle or collet nut, causing dif¿culty removing the collet.
CAUTION

ENGLISH
23
8 - 1 How to replace collets using the provided wrenches
(1) Attach the collet to the collet nut. Be sure to fully engage the latch inside the collet nut to the
groove on the collets outer circumference area (Fig. 3, Fig. 4) (Install the collet in the collet nut by
positioning the collet in the collet nut and pressing down on Àat surface (Fig. 5)).
(2) Attach the collet and collet nut to the collet holder and lightly ¿nger tighten (Do not completely
tighten until the end) (Fig. 6).
(3) Insert the tool into the collet and position the wrench on the collet holder.
Position the wrench on the collet nut, then tighten the collet nut by turning clockwise (Fig .7).
(4) When removing the tool, set the wrench on the collet nut and turn it counterclockwise to loosen
the collet and remove the tool (The ¿rst turn will loosen the collet nut, but the tool will not release
and turning will become stiff. Keep turning through the stiffness and the collet will open).
(5) When removing the collet, the collet and collet nut are secured by a groove in the collet and a
Àange in the collet nut. To remove the collet hold the collet nut in one hand and push diagonally
down on the collet. The collet should be released (Fig. 5).
Collet Nut
Collet
Groove
Latch
Latch
DOWN
Collet Nut
Collet
Wrench Seat
Fig. 3
Fig. 6 Fig. 7
Fig. 4 Fig. 5
Collet Holder
Tighten Loosen
Collet Nut
Tool
Collet Holder
Wrench Tighten
Loosen
Wrench
Tool
Collet Nut
Please set the cutting tools to minimize the overhang amount. 13mm is the maximum
amount of overhang to maintain high accuracy and safety.
RECOMMENDATION

24
8 - 2 Tool replacement using a preset adapter
(1) Af¿x the preset adapter to the tool holder (
ȭ20mm) etc.
(2) Align the collet holder to the drive dog notch of the preset adapter, and insert the collet holder (Fig. 8).
(3) Attach the collet and collet nut to the collet holder, and lightly ¿nger tighten (Do not tighten until
the end) (Fig. 9).
(4) Insert the tool in to the collet and set the wrench on the collet holder. Set the wrench on the collet
nut, and tighten the collet nut by turning clockwise (Fig.10).
(5) When removing the tool, set the wrench on the collet nut and turn it counterclockwise to loosen
the collet and remove the tool (The ¿rst turn will loosen the collet nut, but the tool will not release
and turning will become stiff. Keep turning through the stiffness and the collet will open).
QC3-□
Collet Nut
Tighten Loosen
Preset Adapter
Tighten
Loosen
Wrench
Fig. 8 Fig. 9 Fig. 10
REPLACING THE COLLET HOLDER9.
When replacing the collet holder, be sure to stop the motor. If the lever is operated while
the motor is rotating, the Spindle will incur internal damage.
CAUTION
(1) Stop the motor rotation and con¿rm the rotation has stopped.
(2) Rotate the lever 90-Degrees to the OPEN position and remove the collet holder.
(3) Insert the new collet holder. Rotate the lever to LOCK position all the way until it snaps to tighten
the collet holder.
OPEN
LOCK
OPEN
LOCK
Fig. 11

ENGLISH
25
(4) When installing the collet holder into the Spindle using an automatic tool changer (and other
machines), set the collet holder a distance of 1.0 - 1.5mm from the face of the Spindle.
* After installing the Collet Holder to the Spindle, the Collet Holder alignment can be checked
utilizing a Laser Displacement Sensor as illustrated in Fig. 14.
1.0 - 1.5
Mountiong
Dimensions
(2.9)
Mountiong
Dimensions
(2.9)
1.0 - 1.5
Fig. 12 Before Clamping Fig. 13 After Clamping
Laser Displacement Sensor
Fig. 14

26
INSTALLATION OF THE SPINDLE10.
When installing a Spindle to a ¿xed base, make sure the ¿xed base is grounded in order to
avoid the risk of an electric shock.
WARNING
・When installing a Spindle, do not hit, drop or cause shock to the Spindle. This may
cause damage to internal components and result in malfunctions.
・When mounting the Spindle, be sure to secure within Clamping Area etched on the
Spindle O.D. If the Spindle is installed incorrectly, damage to the internal components is
possible.
・Cautions when tightening the securing bolts on to a Split Type Holder
Do not over-tighten the bolt. This will cause damage to Spindle's precision.
Tighten the bolt until the Spindle body can not be rotated by hand within the ¿xture.
Extreme tightening is not necessary or recommended.
Apply working force and check that the Spindle is tight before using.
CAUTION
(1) When mounting a Spindle, refer to the Clamping Area etched on the Spindle (Fig. 15).
（Clamping Area）
35.220
Fig. 15

ENGLISH
27
Bushing with Slit
Fastening Bolt
Slit of Bushing
Split Type Holder
Spacer
Slit
Fastening Bolt Fastening Bolt
(2) When installing a Spindle to the holder, recommended installation method is shown Fig. 16. Refer
to " (3) How to fabricate the Split Type Holder ". If this is not possible, install as shown in Fig. 17.
Fig. 16 Fig. 17 Fig. 18
Do not allow set screws to come directly in contact with the Spindle body as shown in
Fig. 18, as this will result in damage to the Spindle housing and internal components.
When installing, never clamp directly over the bearings, as this will result in bearing
damage (Refer to Fig. 19).
CAUTION
Fastening Bolt
Bearing
Deformation
Damage of Internal
Components
Fastening Bolt
Fig. 19

28
Spacer
Front View Side View
Slit
Spacer
Removal Screw
Fastening Bolt
Spacer
Removal Screw
Fastening Bolt
Fig. 20
・ How to con¿rm the tightening standard of the holder by the clamp meter Measure the
current value of the CONTROLLER's power cord by the clamp meter.
Fasten the holder so that the increase in the no-load current value (during rotation at the
maximum rotation speed) with the Spindle fastened is 20mA (for type 120V) / 10mA (for
type 200V / 230V) or less, compared to the no-load current value (during rotation at the
maximum rotation speed) without fastening the Spindle. Do not over-tighten the Fastening
Bolt. It may damage Spindle's precision and shorten the life of the bearings.
・ The ¿nal responsibility for ensuring holderʼs safety for use in a given application is left to
the designer of the equipment in which NAKANISHI's Spindle is installed.
NAKANISHI offers Spindle with a wide variety of capabilities and speci¿cations.
Please carefully check the Spindle's speci¿cations against the requirements of your
equipment and verify suitability and safety of the Holder prior to initial use.
CAUTION
(3) How to fabricate the Split Type Holder.
①Rough bore the inside diameter of the Split Type Holder.
②Cut a slit. (Ex. Slit 2mm) wide.
③Tighten the Screw for Removal and Force Open the Slit Area.
④Insert a spacer (Ex. thickness = 2mm) into the Slit Area.
⑤Loosen the Screw for Removal, and tighten the fastening bolt with its speci¿ed torque.
⑥Finish the Split Type Holder so that the inside diameter of the Split Type Holder is ȭ30 with its
tolerance range from
-
0.01mm to
-
0.015mm, and its roundness and cylindricity of less than
5μm.
⑦When inserting the Spindle loosen the Fastening Bolt, and tighten the Screw for Removal,
widening the Slit Area.

ENGLISH
29
BREAK-IN PROCEDURE11.
During transportation, storage or installation, the grease inside the bearings will settle. If the Spindle is
suddenly run at high-speed, the grease will be ejected from the bearings, causing excessive heat that
will cause bearing damage.
After installation, repair, initial operation, or long periods of non operation, please follow the break-in
procedure detailed in Table. 2.
Steps 1 2 3 4 5
Rotation Speed
(min-1) (rpm) 15,000 30,000 40,000 50,000 60,000
Rotation Time (min) 15 10 10 10 10
Items to Check
No Abnormal
Noises.
The Spindle housing temperature during
the break-in process should not exceed
20 degrees C (36 degrees F) above
ambient temperature. Should the Spindle
exceed this limit, rest the Spindle for at
least 20 minutes and re-start the break
in procedure from the beginning. If the
housing temperature rises again and
exceeds 20 degrees C (36 degrees F)
above ambient temperature, check the
Spindle and motor for proper installation.
The Spindle housing
temperature
during the break-in
process should not
exceed 20 degrees
C (36 degrees F)
above ambient
temperature.
Table. 2
CAUTIONS WHEN USING GRINDSTONES AND TOOLS12.
3.14 x Diameter (mm) x Rotation Speed (min-1) (rpm)
Surface Speed (m / s) = 1,000 x 60
The maximum surface speed or rpm is always speci¿ed for a grindstone. Do not exceed
the maximum speed with reference to the calculating chart below. Always follow the
grindstone manufacturer's recommendations.
CAUTION
(1) The proper surface speed for general grindstones is 10 - 30m / s.
(2) Do not exceed 13mm of overhang for mounted grindstones as shown in Fig. 21. If the overhang
must exceed 13mm, reduce the motor speed in accordance with Table. 3.
(3) Dress the grindstone prior to use.
(4) Do not use cutting tools with bent or broken shanks, cracks or excessive run-out.
(5) For grinding, the maximum depth of cut should not exceed 0.01mm radially or axially.
Reciprocate the tool several times after each pass to eliminate tool pressure.
(6) Always operate cutting tools within the allowable recommended speed of the cutting tools. Use
of a cutting tool outside of the allowable speed of the cutting tools could cause damage to the
Spindle and injury to the operator.
(7) Keep the cutting tool shank and collet clean. If contaminants are left in the collet or collet nut,
excessive run-out will cause damage to the cutting tool and or Spindle.

30
Table. 3 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
Grind Stone
Fig. 21
TROUBLESHOOTING13.
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.)
Lever position is OPEN. Set the lever to the LOCK position.
Overheating during
rotation.
Cutting debris has
contaminated the ball
bearings, and the ball
bearings are damaged.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
The lever is not set to the
LOCK position.
Replace parts.
(Return to NAKANISHI dealer service.)
Abnormal vibration or
noise during rotation.
The tool shank is bent. Replace the tool.
Cutting debris has
contaminated the ball
bearing.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
The spindle ball bearings
have been damaged.
Collet holder slippage. The collet holder is worn. Replace the collet holder.
The internal components
of the spindle are worn or
damaged.
Replace the internal components of the
Spindle.
(Return to NAKANISHI dealer service.)
Tool slippage. Collet or collet nut are not
correctly installed.
Check and clean the collet and collet nut.
Reinstall the collet and collet nut.
The collet and the collet
nut are worn.
Replace the collet and collet nut.
(8) When replacing the tool, make sure the tool shank, collet, collet nut, and inner face of the collet
holder are clean. If ground particles or metal chips stick to the inside of the collet, damage to the
collet holder or Spindle can occur due to the loss of precision.
(9) Do not strike or disassemble the Spindle.
(10) Please set the cutting tools to minimize the overhang amount. 13mm is the maximum amount of
overhang to maintain high accuracy and safety.

ENGLISH
31
Refer to brushless motor and E3000 CONTROLLER Operation Manuals.
DISPOSAL OF THE SPINDLE14.
When disposal of a Spindle is necessary, follow the instructions from your local government agency for
proper disposal of industrial components.
Trouble Cause Inspection / Corrective Action
High run-out. The tool is bent. Change the tool.
Collet nut is not correctly
installed.
Secure the collet and the collet nut
correctly.
The collet, collet nut or
collet holder are worn.
Replace the collet, collet nut or collet
holder.
Inside of the Spindle is worn. Replace the Spindle shaft.
(Return to NAKANISHI dealer service.)
Contaminants inside the
collet, collet nut and collet
holder or the spindle.
Clean the collet, collet nut and collet holder
or the spindle.
The spindle ball bearings
have been damaged.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)

2015.12.18 001