Nakanishi BMS-4040-RGD-03M User manual

1
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.
Thank you for purchasing motor spindle BMS-4040-RGD-03M・BMS-4040-RGD-2M・BMS-4040RA-RGD-03M・
BMS-4040RA-RGD-2M. 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.
OM-K0697E
Motor Spindle
BMS-4040-RGD-03M・BMS-4040-RGD-2M
BMS-4040RA-RGD-03M・BMS-4040RA-RGD-2M
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.
OPERATION MANUAL 000
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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.
⑤Use only tools with shank diameters within the tolerance of the selected collet.
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 " 13. 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 " 11. BREAK-IN PROCEDURE" detailed in Table 1. 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-16)・・1pc.* Wrench (17 ×22) ･･2pcs.
17
22
Operation Manual ･･1set.
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.
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5. FEATURES
①The motor spindle housing is made from precision ground, hardened, stainless steel (SUS)with an outside
diameter of φ40mm.
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-4040-RGD-03M BMS-4040-RGD-2M BMS-4040RA-RGD-03M BMS-4040RA-RGD-2M
Maximum Motor Rotation Speed 40,000min-1
Spindle Accuracy Within 1μm
Max. Output 1,200W
Noise Level Less than 70dB(A)
IP Code Motor Spindle : IP57, Motor Cord : IPX7
Weight 1.4kg 1.9kg 1.4kg 1.9kg
Collet (CH16- □□ ) φ3.0mm、φ3.175mm、φ4.0mm、φ6.0mm、φ6.35mm、φ8.0mm、φ10.0mm
Collet Nut CHN - 16
<Option>
*Note 1：Motor Cord is sold separately. Please select the suitable motor coed length for your application.
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.
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
Motor Cord
*Note1
EMCD - 4000 - □M
(Power Line)
Motor Cord Length : 2m, 4m, 6m and 8m.
(The Air Hose ( φ6mm) of the same length is attached.)
EMCD - 4000S - □M
(Signal Line) Motor Cord Length : 2m, 4m, 6m and 8m.
（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.)
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6 - 3 Torque Characteristics
Fig. 3
Fig. 2
6 - 2 Outside View
φ23 φ40
300 or 2000
(29.8)168.2
(198)
Dust Proof Cover Area
(29.8)186.6
(216.4)
300 or 2000
φ23 φ40
Dust Proof Cover Area
CAUTION
These Motor Cord <EMCD - 4000 - 8M and EMCD - 4000S - 8M> are never use for Angle Type Motor
Spindle <BMS-4040-RGD-2M / BMS-4040RA-RGD-2M>.
Torque (cN・m)
Output (W)
Speed（×103mim-1）
Countinuous Duty Area
Torque Output
Countinuous Duty Area
Torque Output
10
00 5 10 15 20 25 30 35 40
200
0
400
600
800
1000
1200
1400
20
30
40
50
60
70
80
90
100
①BMS-4040-RGD-03M・BMS-4040-RGD-2M
Fig. 1
②BMS-4040RA-RGD-03M・BMS-4040RA-RGD-2M
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7. CHANGING THE CUTTING TOOL
Do not tighten the collet without inserting a cutting tool or dummy bur, as this will damage the
collet, spindle or collet nut, causing difficulty remove the collet.
22
17
22
17
Collet Nut
Spindle Shaft
Tool
Loosen
Tighten
①Set the provided 17mm wrench on the spindle.
②Place the provided 22mm wrench on the collet nut
and turn it counterclockwise to loosen the collet and
remove the cutting tool. (The first 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.)
③Insert the new tool and tighten the collet by turning
clockwise.
CAUTION
8. REPLACING THE COLLET
①Remove the tool according to the section "7.
CHANGING THE CUTTING TOOL" procedure
above and remove collet nut assembly. (Fig. 5)
②The collet and collet nut are secured by a
groove in the collet and a flange 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. 6)
③
To install the collet, hold the collet at a slight
angle, and insert it into the collet nut. (Fig. 7)
Press the collet in the collet nut by positioning
the collet in the collet nut and pressing down on
flat surface (Fig. 6).
Be sure to fully engage the latch inside the
collet nut into the groove on the collet outer
circumference area. (Fig. 8)
22
17
Collet Nut
Spindle Shaft
Tool
Wrench Seat
Collet Nut
Collet
Push
Loosen
Fig. 5 Fig. 6
CAUTION
When installing the collet in the collet nut, make sure to fully engage the latch inside the collet
nut to the groove on the collet outer circumference 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.
Groove
Latch Collet
Collet Nut
Latch
Fig. 7 Fig. 8
6 - 4 Air Supply
Please set the air pressure to 0.35MPa for continuous use, although the motor spindle can be operated at the air
pressure within 0.2MPa~0.35MPa.
Fig. 4
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10. 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
9. CONNECTION OF THE MOTOR CORD
①Remove the Protective Cap of the Motor Cord.
・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.
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.
Motor Cord SideMotor Spindle Side Tighten
Connector Nut
Fig. 11
Insert
Fig. 12
④Insert the air hose of the Motor Cord
Side to the air joint of the Motor Spindle
Side.
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Fastening Bolt Fastening Bolt Fastening Bolt
Slit of Bushing
Split Type Holder Bushing with Slit
Slit
Spacer
Fig. 15
② When 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.
Fig. 16 Fig. 17
* When installing a motor spindle, use a "Grip Ring
GR-30 (sold separately (Fig. 14))" recommended.
If the Grip Ring GR-30 (sold separately) cannot
be used due to the restriction of dimension and
space, install as shown in ②below.
Grip Ring GR-40 (Sold separately)
CLAMPING AREA
Fig. 14
①When mounting a motor spindle, refer to the Clamping Area etched on the motor spindle. (Fig.13)
（Clamping Area）
(60)(45)
CLAMPING AREA
Fig. 13
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.
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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 50mA (for type 200V - 240V) 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.
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)
Bearing
Fastening Bolt
Fastening Bolt
Deformation
Damage of Internal
Components
Fig. 18
③ How to fabricate the Split Type Holder
（1）Roughly process (carve) the inside
diameter of the Split Type Holder.
（2）Cut a slit. (Ex. Slit 2mm)
（3）Twist the Screw for Removal and Broaden
the Slit Area.
（4） Insert spacer (ex t = 2mm) 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 isφ40 with its tolerance range from
-
0.01mm to
-
0.015mm, and its roundness
and cylindricity of less than 5µm.
（7）When inserting the motor spindle loosen
the Fastening Bolt and twist the Screw for
Removal, and broaden the Slit Area.
Fastenig Bolt Fastening Bolt
Spacer
Slit
Front View Side View
Screw for Removal
Screw for Removal
Fastening Bolt
Spacer
Spacer
Fig. 19
CAUTION
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3.14 x Diameter (mm)x rotation speed (min-1)
1,000 x 60
Surface Speed (m/s) =
12. CAUTIONS IN USING GRINDSTONES AND TOOLS
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.
①The proper surface speed for general grindstones is 10-30m/s.
②Do not exceed 13mm of overhang for mounted grindstones as shown in Fig. 20. If the overhang must
exceed 13mm, reduce the motor speed in accordance with table 3.
③Do not use tools with bent or broken shanks, cracks or excessive run-out.
④Dress the grindstone prior to use.
⑤For 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.
⑥Always operate tools within the allowable recommended speed of the tools. Use of a tool outside of the
allowable speed of the tools could cause damage to the spindle and injury to the operator.
⑦Keep the tool shank and collet clean. If contaminants are left in the collet or collet nut, excessive run-out will
cause damage to the tool and or spindle.
⑧Do not strike or disassemble the spindle.
⑨Please set the tools to minimize the overhang amount. 13mm is the maximum amount of overhang to
maintain high accuracy and safety.
Table 2.
11. 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 2.
Steps 1 2 3 4
Rotation speed（min-1）
10,000 20,000 30,000 40,000
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 25 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 25 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 25 degrees C
(36 degrees F) above
ambient temperature.
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Table 3. Overhang and Speed
Overhang (mm)Max. Speed (min-1)
20 N x 0.5
25 N x 0.3
50 N x 0.1
N=Max. Operating Speed with 13mm overhang. Fig. 20
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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.)
13. TROUBLESHOOTING
If a problem or concern occurs, please check the following prior to consulting your dealer.
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14. 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.
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Contents are subject to change without notice. 2018.10.16 002 M
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