Nakanishi BMS-5010 User manual

OM-KK1009EN 000
Motor Spindle
BMS-5010・ BMS-5010RA
OPERATION MANUAL
Thank you for purchasing motor spindle BMS-5010・BMS-5010RA. This motor spindle is designed for high precision
machining including grinding, drilling and milling. The <E4000 CONTROLLER> and the <Air Line Kit> are required to
drive this motor spindle. Read this Operation Manual carefully before use. Also read <E4000 CONTROLLER> and
the <Air Line Kit> Operation Manual.
1. CAUTIONS FOR HANDLING AND OPERATION
■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 or damage
to the device. These are classified as follows in accordance with the seriousness of the risk.
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.
WARNING
①This motor 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 hearing protection, and use a protective cover around the
motor spindle whenever the motor spindle is rotating.
④Never connect, disconnect or touch the Power Cord Plug and Motor Cord Connector with wet
hands. This may cause an electric shock.
⑤Never operate or handle the motor spindle until you have thoroughly read the owner's manual
and safe operation has been confirmed.
1）To prevent injuries/damages, check this motor spindle and cutting tool for proper installation,
then operate this motor spindle.
2）Before disconnecting this motor spindle, always turn the control power off and turn the
compressed air supply to the control unit off. It is then safe to remove this motor spindle.
⑥When installing a tool, tighten the collet correctly and check again the collet and collet nut before
use. Do not over-tighten the collet. This may cause damage to the motor spindle.
⑦Do not use bent, broken, chipped, out of round or sub-standard tools as they can shatter or
explode. It shatters, it cracked, and the tool that bends and breaks disperses and it causing
injures. When using a new tool, rotate it in a low speed and increase speed gradually for safety.
⑧Do not exceed the maximum recommended allowable tool speed. For your safety, use speeds
below the maximum allowable speed.
⑨Do not apply excessive force. This may cause tool slippage, tool damage, injury to the operator,
loss of concentricity and precision.
CAUTION
①Do not drop or hit this motor spindle, as shock can damage to the internal components.
②Be sure to clean the collet and collet nut, the inside of the spindle before replacing the 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 a spindle, stop the motor and remove dirt with a brush or a cloth. Do not blow air
to a dust proof area (refer to Section 6 - 2 "Outside View") with compressed air, foreign particles
or cutting chips might get into the ball bearing.
④Always clean the tool shank before installing the tool in the motor spindle.
⑤Please select the suitable tool diameter from Table 2 for each collet size. If you use a tool that is
out of range, you may experience problems such as core runout, insufficient holding power, and
collet deformation.
⑥Select suitable products or tools for all applications. Do not exceed the capabilities of the motor
spindle or tools.
⑦Carefully direct coolant spray to the tool. Do not spray directly on the motor spindle body.
⑧Stop working immediately when abnormal rotation or unusual vibration are observed. Afterwards,
please check the content of Section "15. TROUBLESHOOTING".
⑨Always check if the tool, collet or collet nut are damaged before and after operating.
⑩If the collet or collet nut show signs of wear or damage, replace them before a malfunction or
additional damage occurs.
⑪After installation, repair, initial operation, or long periods of non operation, please refer to Section
"12. BREAK-IN PROCEDURE" detailed in Table. 3. When checking the motor spindle, no vibration
or unusual sound should be observed during rotation.
⑫Do not disassemble, modify or attempt to repair this motor spindle. Additional damage will occur
to the internal components. Service must be performed by NSK NAKANISHI or an authorized
service center.
⑬When using this motor spindle for mass production, please purchase the another motor spindle
as a spare in case of an emergency.
2. BASIC PACKAGE
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
Motor Spindle・・1pc. Collet Nut (CHN-20)・・1pc.* Wrench (22 ×27) ･･2pcs.
22
27
Operation Manual ･･1set.
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取扱説明書
OPERATION MANUAL
Inspection Card・・1pc.
検査成績表
Inspection Card
* The Collet Nut is attached to the air bearing spindle.
3. WARRANTY
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.)
4. CONTACT US
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.
Website
:
Industrial Div.
: 8:00 to 17:00 (CST)
(closed Saturday, Sunday and Public Holidays)
: [phone]
: [phone]
: [phone]
: www.nskamericacorp.com
Contact UsContact Us
For U.S. Market
Company Name
Business Hours
Telephone No.
e-mail
:
: 8:00 to 17:00 (JST)
(closed Saturday, Sunday and Public Holidays)
: [phone]
: [email protected]
For Other Markets
5. FEATURES
①The motor spindle housing is made from precision ground, hardened, stainless steel (SUS) with an outside
diameter of φ50 mm.
②Excellent durability and high reliability are obtained by using a high-speed brushless motor, which eliminates the
need for brush replacement and frequent maintenance.
③A quick disconnect cord is available for easy motor removal.
6. SPECIFICATIONS AND DIMENSIONS
6 - 1 Specification
Model BMS-5010 BMS-5010RA
Maximum Motor Rotation Speed 10,000 min-1
Spindle Accuracy Within 1 μm
Max. Output 1,200 W
Noise Level Less than 70 dB(A)
IP Code Motor Spindle : IP57
Weight 2.4 kg 2.8 kg
<Option>
Collet Nut CHN - 20
Motor Cord
*Note1
EMCD - 4000 - □M (Power Line) Motor Cord Length : 2 m, 4 m, 6 m and 8 m.
(The Air Hose (φ6 mm) of the same length is attached.)
EMCD - 4000S - □M (Signal Line) Motor Cord Length : 2 m, 4 m, 6 m and 8 m.
*Note 1：Motor Cord is sold separately. Please select the suitable motor coed length for your application.
Maximum length of mortor cord for BMS-5010 is 16m by connecting two 8m mortor cords.
Maximum length of mortor cord for BMS-5010RA is 16m by connecting 6m and 8m mortor cords, since it
has a 2 m motor cord attached to the main unit.
<Collet>
The use of REGO-FIX ER20/ER20UP is recommended.
Please select the suitable tool diameter from Table. 2 For Each Collet Size.
Table. 2 For Each Collet Size
Collet size Tool Diameter Range
φ1 φ
0.5 〜φ1
φ1.5 φ
1.1 〜φ1.5
φ2 φ
1.6 〜φ2
φ2.5 φ
2.1 〜φ2.5
φ3 φ
2.6 〜φ3
φ3.5 φ
3.1 〜φ3.5
φ4 φ
3.6 〜φ4
φ4.5 φ
4.1 〜φ4.5
φ5 φ
4.6 〜φ5
Collet size Tool Diameter Range
φ5.5 φ
5.1 〜φ5.5
φ6 φ
5.6 〜φ6
φ6.5 φ
6.1 〜φ6.5
φ7 φ
6.6 〜φ7
φ7.5 φ
7.1 〜φ7.5
φ8 φ
7.6 〜φ8
φ8.5 φ
8.1 〜φ8.5
φ9 φ
8.6 〜φ9
φ9.5 φ
9.1 〜φ9.5
Collet size Tool Diameter Range
φ10 φ
9.6 〜φ10
φ10.5 φ10.1 〜φ10.5
φ11 φ10.6 〜φ11
φ11.5 φ11.1 〜φ11.5
φ12 φ11.6 〜φ12
φ12.5 φ12.1 〜φ12.5
φ13 φ12.6 〜φ13
6 - 2 Outside View
①BMS-5010
φ28.8
φ50 0
-0.01
212.8
(300)(252.8)
(40)
Dust Proof Cover Area
Fig. 1
②BMS-5010RA
φ28.8
φ50
0
-0.01
Dust Proof Cover Area
214.5
(254.5)
(40)
(2000)
Fig. 2
6 - 3 Torque Characteristics
123456789100
280
260
240
220
200
180
160
140
120
100
80
60
40
20
0
1400
1200
1000
800
600
400
200
OutputOutput
Torque
Torque
Continuous Duty Area
Continuous Duty Area
Speed (×103min-1 (rpm))
Torque (cN･m)
Output (W)
Fig. 3
6 - 4 Air Supply
Please set the air pressure to 0.35 MPa for continuous use, although the motor spindle can be operated at the air
pressure within 0.2 MPa~0.35 MPa.
7. INSTALLING THE COLLET
CAUTION
• Be sure to clean the collet, the collet nut and the inside of the spindle before installing the collet
or the tool. If ground particles or metal chips stick to the inside of the spindle or the collet,
damage to the collet or spindle can occur due to the loss of precision.
• When installing the collet in the collet nut, make sure that the latches of the collet nut are properly
seated in the groove of the collet. If the latches are not properly seated when you tighten the
collet nut, the collet may become stuck inside the spindle.
• Never tighten the collet nut without inserting a tool in the collet. Excessively tightening the collet
may damage the latches that hold the collet in the collet nut, making it difficult to remove the
collet from the spindle.
• Keep the overhang length to a minimum when installing the tool. If the overhang length is too
long, the tool may bend and cause injury.
①Hold the collet nut in one hand, and install
the collet. (Fig. 4)
If the collet is difficult to install, tilt the collet
to one side when inserting it, so that the
latches can more easily be seated in the
groove. (Fig. 5)
At this time, make sure that the latches of
the collet nut are properly seated in the
groove of the collet. (Fig. 6)
②Insert the tool, place the provided 22 mm
wrench on the wrench flats of the spindle
shaft and place the provided 27mm wrench
on the collet nut and turn clockwise to
secure the tool.
8. CHANGING THE TOOL
①Place the provided 22 mm wrench on the wrench flats of the spindle shaft. (Fig. 7)
②Place the provided 27 mm wrench on the collet nut and turn it counterclockwise to loosen the collet and remove
the tool. (Fig. 7)
(The first turn of the collet holder is stiff. Keep turning through the stiffness and the collet will open. The turning
may not become stiff.)
③Insert the new tool and turn the collet nut clockwise to secure the tool. (Fig. 7)
9. REPLACING THE COLLET
①Loosen the collet nut with the tool installed as described in
section "8. CHANGING THE TOOL". Keep turning the collet nut
until it comes out of the spindle shaft together with the tool, and
then remove the tool from the collet. (Fig. 8)
②Hold the collet nut in one hand, and tilt the collet to one side to
release it. If the collet is not released, try tilting it to the other
side. (Fig. 5)
③Install the collet as described in section "7. INSTALLING THE
COLLET".
Fig. 4
Latch
27
22
27
22
Spindle Shaft
Collet Nut
Tool
Tighten
Loosen
Fig. 5 Fig. 6
Wrench Seat
Collet Nut
Collet
Push
Collet Nut
Collet
Groove
Latch
Fig. 7
27
22
Loosen
Spindle Shaft
Collet Nut
Fig. 8

10. CONNECTION OF THE MOTOR CORD
CAUTION
• Before connecting to the Motor Cord Connector, make sure the Main Power Switch in the
CONTROLLER is turned OFF. If the Main Power Switch on the CONTROLLER is ON while
connecting the Motor Cord Connector, damage may cause to the CONTROLLER.
• Install the Connector Cap (Protective Cap etc.) to prevent damage or contamination to the Motor
Cord Connector when not in use.
①Remove the Protective Cap of the Motor Cord.
Protective Cap Protective Cap
Motor Power
Line
Motor Signal
Line
Take outTake out
Fig. 9
②Ensure the Alignment Pin (Motor Spindle Side) and Alignment Hole (Motor Cord Side) are located (12 o-clock)
upward. Carefully insert the alignment pin into the alignment hole and push straight into the Connector of the
Motor Cord.
Motor Spindle Side Motor Cord Side
Alignment Pin
Alignment Hole
Alignment Hole
Alignment Pin
Fig. 10
③Tighten the Connector Nut with clockwise.
④Insert the air hose of the Motor Cord Side
to the air joint of the Motor Spindle Side.
11. INSTALLATION OF THE MOTOR SPINDLE
WARNING
When installing a electric motor spindle to a fixed base, make sure the fixed base is grounded in
order to avoid the risk of an electric shock.
CAUTION
• When installing a motor spindle, do not hit, drop or cause shock to the motor spindle. This may
cause damage to internal components and result in malfunctions.
• When mounting the motor spindle, be sure to mount within clamping area etched on the motor
spindle. If the motor spindle is installed incorrectly, this will cause and damage to the motor spindle.
• Cautions when tightening the securing bolt of the Split Type Holder
Do not over tighten the bolt. This may cause damage to motor spindle's precision.
Tighten the bolt until the motor spindle body can not be turned by hand within the fixture.
Extreme tightening is not necessary or recommended.
Apply working force and check that the motor spindle is tight before using.
①When mounting a motor spindle, refer to the Clamping Area etched on the motor spindle. (Fig. 13)
CLAMPING AREA
(40) (80)
（Clamping Area）
Fig. 13
* When installing a motor spindle, use a "Grip Ring
GR-50 (sold separately (Fig. 14))" recommended.
If the Grip Ring GR-50 (sold separately) cannot
be used due to the restriction of dimension and
space, install as shown in ②below.
②When installing a motor spindle to the holder, recommended installation method is shown in Fig. 15. Refer to "③How
to fabricate the Split Type Holder". If this is not possible, install as shown in Fig. 16.
Fastening Bolt Fastening Bolt Fastening Bolt
Slit of Bushing
Split Type Holder Bushing with Slit
Slit
Spacer
Fig. 15 Fig. 16 Fig. 17
CAUTION
Do not allow set screws to come directly
in contact with the motor spindle body
as shown in Fig. 17, as this will result in
damage to the motor spindle housing
and internal components.
When installing, never clamp directly
over the bearings, as this will result in
bearing damage. (Refer to Fig. 18)
③How to fabricate the Split Type Holder
（1）Roughly process (carve) the inside
diameter of the Split Type Holder.
（2）Cut a slit. (Ex. Slit 2 mm)
（3）Twist the Screw for Removal and
Broaden the Slit Area.
（4）Insert spacer (ex t = 2 mm) into the
Slit Area.
（5）Loosen the Screw for Removal, and
tighten the fastening bolt with the
specified torque.
（6）Finish the Split Type Holder so that
the inside diameter of the Split Type
Holder isφ50 with its tolerance range
from - 0.015 mm to - 0.025 mm, and
its roundness and cylindricity of less
than 5 µm.
（7）When inserting the motor spindle
loosen the Fastening Bolt and twist
the Screw for Removal, and broaden
the Slit Area.
CAUTION
• How to confirm 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 motor spindle fastened is 50 mA (for type 200 V - 240 V) or
less, compared to the no-load current value (during rotation at the maximum rotation speed)
without fastening the motor spindle. Do not overtighten the Fastening Bolt. It may damage motor
spindle's precision and shorten the life of the bearings.
• The final responsibility for ensuring holderʼs safety for use in a given application is left to the
designer of the equipment in which NAKANISHI's motor spindle is installed.
NAKANISHI offers motor spindles with a wide variety of capabilities and specifications.
Please carefully check the motor spindle's specifications against the requirements of your
equipment and verify suitability and safety of the Holder prior to initial use.
Motor Cord SideMotor Spindle Side Tighten
Connector Nut
Fig. 11
Insert
Fig. 12
Grip Ring GR- 50 (Sold separately)
CLAMPING AREA
Fig. 14
Bearing
Fastening Bolt
Fastening Bolt
Deformation
Damage of Internal
Components
Fig. 18
Fastenig Bolt Fastening Bolt
Spacer
Slit
Front View Side View
Screw for Removal
Screw for Removal
Fastening Bolt
Spacer
Spacer
Fig. 19
12. BREAK-IN PROCEDURE
During transportation, storage or installation the grease inside the bearings will settle. If the spindle is suddenly run
at high-speed excessive heat will cause bearing damage. After installation, repair, initial operation, or long periods of
non operation please follow the break-in procedure detailed in Table. 3.
Table. 3
Steps 1 2 3 4
Rotation speed（min-1）2,500 5,000 7,500 10,000
Rotation Time (min) 15 10 10 15
Items to Check No Abnormal Noises The motor spindle housing temperature
during the break-in process should not
exceed 20 degrees C (36 degrees F) above
ambient temperature. Should the motor
spindle exceed this limit, rest the motor
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
motor spindle for proper installation.
The motor spindle
housing temperature
during the break-in
process should not
exceed 20 degrees C
(36 degrees F) above
ambient temperature.
13. CAUTIONS WHEN USING CUTTING TOOLS
CAUTION
Refer to the following formula for the maximum spindle rotation speed when using a drill or an
end mill.
Rotation speed (min-1) = 1,000 x Cutting speed (m/min)
3.14 x Cutting drill diameter (mm)
①The spindle RPM depends on the tool diameter and the workpiece material.
②Please follow the manufacturer's recommended rotational speed. Applying tools outside of manufacturer's
maximum recommended rotational speed may cause damage to the spindle or injury to the operator.
③For improved machining accuracy, Keep the overhang length to a minimum when installing the tool.
④When increasing the cutting tool overhang, reduce the motor speed. (Table. 4, Table. 5)
⑤Keep the cutting tool shank and collet clean. Any contaminants in the collet or collet nut will cause excessive
runout and will therefore cause damage to the cutting tool and or spindle.
⑥Do not strike or drop the spindle.
Table. 4 Relationship Between Drill Overhang Length and RPM
Overhang Length (mm) Max RPM
Drill diameter ×10 100 % of the RPM
Drill diameter ×20 70 % of the RPM
Drill diameter ×20 or more 50 % or less of the RPM
Table. 5 Relationship Between End Mill Overhang Length and RPM
Overhang Length (mm) Max RPM
Shank diameter x 5 100 % of the RPM
Shank diameter x 10 50 % of the RPM
Shank diameter x 10 or more 30 % or less of the RPM
14. CAUTIONS IN USING GRINDSTONES
CAUTION
The maximum surface speed or rpm is always specified for a grindstone. Do not exceed the
maximum speed with reference to the calculating chart below. Always follow the grindstone
manufacturers recommendations.
Surface Speed (m/s) = 3.14 x Diameter (mm) x rotation speed (min-1)
1,000 x 60
①The proper surface speed for general grindstones is 10 - 30 m/s.
②Do not exceed 13mm of overhang for mounted grindstones. (Fig. 21)
③For improved machining accuracy, Keep the overhang length to a minimum when installing the tool.
④When increasing the cutting tool overhang, reduce the motor speed. (Table. 6)
⑤Dress the grindstone prior to use.
⑥Do not use cutting tools with bent or broken shanks, cracks or excessive run - out.
⑦For 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.
⑧Keep the cutting tool shank and collet clean. Any contaminants in the collet or collet nut will cause excessive
runout and will therefore cause damage to the cutting tool and or spindle.
⑨Do not strike or drop the spindle.
Table. 6 Relationship Between Overhang and RPM
Overhang (mm) Max RPM (mm-1)
20 N x 0.5
25 N x 0.3
50 N x 0.1
※N=Max. Operating Speed with 13mm overhang.
15. TROUBLESHOOTING
If a problem or concern occurs, please check the following prior to consulting your dealer.
Trouble Cause Inspection/Corrective Action
Spindle does not
run.
The ball bearings are damaged. Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Motor is broken. Replace the motor.
(Return to NAKANISHI dealer service.)
Overheating
during rotation.
Cutting debris has contaminated
the ball bearing, and the ball
bearing is damaged.
Replace the ball bearings.
(Return to NAKANISHI dealer service.)
Low air pressure. Check air hose connection and air pressure.
Abnormal
vibration or noise
during rotation.
Using bent tool. Replace the tool.
Cutting debris has contaminated
the ball bearing. Replace the ball bearings.
(Return to NAKANISHI dealer service.)
The ball bearings are worn.
Tool slippage.
Collet or collet nut are not
correctly installed.
Check and clean the collet and collet nut. And,
tighten the collet accurately again.
The collet and the collet nut are
worn. Replace the collet and the collet nut.
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 and the collet nut are
worn.
Replace the collet and the collet nut.
Inside of the spindle is worn. Replace the spindle shaft.
(Return to NAKANISHI dealer service.)
Contaminants inside the collet
and the collet nut or the spindle.
Clean the collet, collet nut and the inside of the
taper and spindle.
The ball bearings are worn. Replace the ball bearings.
(Return to NAKANISHI dealer service.)
16. DISPOSAL OF THE AIR BEARING
When disposal of an Air Bearing Turbine Spindle is necessary, follow the instructions from your local
government agency for proper disposal of industrial components.
Fig. 20
Overhang Length (mm)
Fig. 21
13