NTN MD10 Series User manual

No. PMPH022E-c
- 1 -
INSTRUCTION
MANUAL
NTN Mono-Drive
2-Way Feeder
Type MD10･B(C)／MD20･B(C)
／MD30･B(C)
Introduction
Thank you for your purchase of the NTN mono-drive 2-way feeder.
For correct operation of the NTN mono-drive 2-way feeder, read this Instruction Manual carefully before
use, and ensure execution of safe work through correct operation.
Be sure to deliver this Instruction Manual to the end user. The end user is further requested to store the
Instruction Manual carefully in a ready-to-take out place to facilitate ready reference at any time after
reading.
1. Before Use
When the machine is delivered,
check for damage during transport
and missing parts. If any trouble is
found, inform the sales office
nearby.
When packaging of the machine and
holding fixture for transport are
attached to the body, be sure to
remove them before use.
Be sure to use NTN controller for
this machine.
Otherwise, specified performance of
the machine may not be obtained.
Introduction ･････････････････････････ 1
1. Before Use･･･････････････････････ 1
2. Precaution for Safety ･････････････ 2
3. Operating Principle･･･････････････ 4
4. Names of Main Component Parts ･･ 4
5. Dimensional Drawing ･････････････ 5
6. Transportation and Installation ････ 8
7. Wiring and Operating Methods ････ 9
8. Inspection and Adjustment･･･････ 10
9. Fitting Work of Attachment ･･･････ 15
10. Troubleshooting･････････････････ 16
11. Specifications･･･････････････････ 17
Before use
Read this Instruction Manual
thoroughly, and operate the
machine correctly.
CONTENTS

- 2 -
2. Precaution for Safety
This machine is designed and manufactured for parts feeding equipment based
on a concept of trouble-free operation and labor saving, while responsibility on
user oneself is also important for safety. Read this manual carefully before
starting use, and be sure to follow the description below on safety. Also be sure
to follow the warning and caution label attached to the body.
WARNING Indicates a potentially hazardous situation which, if not avoided, will
result in death or serious injury.
CAUTION Indicates a potentially hazardous situation which, if not avoided, will
result in minor or moderate injury or property damage only.
WARNING
The most dangerous position of the machine is electric equipment. Be sure to connect a
grounding wire. Incompliance may result in electric shock.
Do avoid use in the atmosphere of explosive gas or flammable gas, or in a wet place.
Explosion or fire hazard may be caused.
CAUTION
Do not use the machine in a place exposed to splash of water, outdoors, or in a place of
extremely low temperature or high temperature and high humidity. (See the next page for
environmental condition in use.)
yThis machine is a heavy material. (See the specification in item 11 for the mass.) In
transporting the machine, wear safety shoes, watch out for dropping, and take due care.
yFix the machine securely after installation.
yDo not conduct the installation and assembly work with bare hands.
yAs for a chute equipped with array mechanism, pay attention to the sharp edge and do
not touch with bare hand. Be sure to wear gloves.
Do not use the machine on a base lacking in sufficient strength or in an unstable place. The
specified performance of the machine may not be observed.
Do not place the body in inclination. The specified performance of the machine may not be
observed.
Please do not scratch, pull or forcibly bend the wiring. Moreover, when a heavy thing is put
on it, or it is pinched, the wiring will damage. It causes a fire or an electric shock.
When welding the machine to a chute, be sure to connect the grounding clip of welder to
the chute. If welding ground is insecure, the grounding wire connecting the body and the
controller may be burnt, resulting in electric shock or leakage.

- 3 -
For proper use
[1] NTN mono-drive 2-way feeder is a vibrating machine with a mechanism to align specified parts in a
certain direction mounted on a chute to feed parts in bulk state to a specified position in alignment and
regular series. Do not use the machine for other purposes such as equipment for material test and
sieve.
[2] Use the NTN mono-drive 2-way feeder in conformance to instructions in this operation manual and
packaged manual. See the specification in item 11 for technical specification.
[3] This Instruction Manual is for the body with part number design change code B and C of NTN
mono-drive 2-way feeder, and is not applicable to the body without design change code and with
design change codeAof conventional machine.
[4] Be sure to use NTN controller for NTN mono-drive 2-way feeder. Also, use a controller and power
supply compatible with this machine.
[5] Generated noise level depends on the specification of this machine, material of parts to be fed, etc.
When noise level is above acceptable limit, take a noise insulation measure with noise insulation cover,
etc.
(Note 1) Do not use the machine when it is not in complete condition (abnormal noise, abnormal
vibration, chipped parts, etc).
(Note 2) When a chute is equipped with array mechanism for specified parts to be fed, only such
specified parts can be fed.
(Note 3) Environmental condition in use
Ambient working temperature 0 to 40°C
Ambient working humidity 30 to 90% (Free from condensation)
Working altitude Below 1,000 m
Storage temperature in transport −10 to 50°C
Atmosphere of use place Not exposed to water, chemical, etc. Free from combustible gas and corrosive gas.
Use only indoors.
What should be observed by users
[1] Follow the instructions in this operation manual and other manuals in any work such as operation,
maintenance, and repair.
[2] Avoid such use that may deteriorate the safety of NTN mono-drive 2-way feeder. When any sign of
change is found which may harm safety, inform NTN of details.
(Note) NTN mono-drive 2-way feeder must be installed, operated, maintained, and repaired by a
special expert. Further, make sure that only authorized personnel are in charge of operation.

- 4 -
3. Operating Principle
NTN mono-drive 2-way feeder is a return type alignment feeder enabled to store, align and feed parts by
means of the alignment and feed side chute vibrated by the drive source of the feeder body and the return
trough vibrating in the direction opposite.
(1) Vibrations of feeder body
The alignment and feed side chute installed on the upper vibrator is connected to the lower vibrator by
the leaf spring provided at a certain angle and they are vibrated with a magnet, so that works on the chute
are thrown upward aslant, resulting in little-by-little advancement of the works. As for vibration, large
vibration can be produced with small vibrating force by means of setting the strength of body leaf spring
properly corresponding to the installed chute mass and resonating by setting the absorption frequency of
magnet.
(2) Vibrations of return trough
Leaf spring unit for return is installed on the lower
vibrator of the feeder body (1) above mentioned, works
can be advanced little by little to the opposite direction
by using vibration of the feeder body and transmitting
vibration of the different direction from that of aligning
and feeding side.
4. Names of Main Component Parts
Upper vibrator
Chute mounting
area
Chute mount
Return trough Return trough angle
adjusting screw
Counterweight
Magnet Moving iron
core Base
Work ejection
Chute
(Not included in the body)
Body / feed side leaf spring
Front and back：2 positions
Return side leaf spring
Front and back: 2 positions
Return mounting plate
(Cover)
Cushion
rubbe
r
Mounting frame
Angle setting spacer
Lower leaf spring
mounting block
Upper leaf spring
mounting block
Chute part
Return vibrations
Body and feed vibrations

- 5 -
5. Dimensional Drawing
K-MD10R
LB1
2（With base plate）、K-MD10R
LC1
2（Without base plate）
*1: When four M6 nuts are loosened, the base plate position can be changed up to 10 mm each in the forward and backward directions.
*2: When two M10 setscrews are loosened, the counterweight can be moved forward up to 15 mm from the position shown in the ejection
direction and up to 35 mm backward.
*3: Height dimension is that of return trough of standard tilt angle 7.50. Dimension in parenthesis is alterable minimum/maximum dimension
in the tilt angle adjustment range.
(Note 1) As for a type without base plate refer to the base plate dimension drawing in installation.
(Note 2) When manufacturing a chute, observe the acceptable dimension in the drawing and the mass
described in item 11 Specification. Make a chute as light as possible to the extent in which its
rigidity is not weakened.
For detailed dimensions of the linear feeder body, refer
to the linear feeder specifications and dimensions
described in XI/J and subsequent paragraphs in the
Parts Feeder General Catalog: CAT. No. 7018.
A
T mounting area Work ejection
(Standard tilt angle 7.5°±1°)
(Max. 189)
2-Setscrew M10 4-Nut M6 Base plate
Base plate dimensions
(Top view) View
Y
(AT mounting dimensions)
5-M5 screw, Depth: 15
A
T mounting area
Return trough
(Max. 205)

- 6 -
K-MD20R
LB1
2（With base plate）、K-MD20R
LC1
2（Without base plate）
*1: When four M6 nuts are loosened, the base plate position can be changed up to 10 mm each in the forward and backward directions.
*2: When two M10 setscrews are loosened, the counterweight can be moved forward up to 10 mm from the position shown in the ejection
direction and up to 35 mm backward.
*3: Height dimension is that of return trough of standard tilt angle 7.50. Dimension in parenthesis is alterable minimum/maximum dimension
in the tilt angle adjustment range.
A
T mounting area Work ejection
Return trough
(Standard tilt angle 7.5°±1°)
(Max. 251)
2-Setscrew M10 4-Nut M6 Base plate
Base plate dimensions
(Top view) View
Y
(AT mounting dimensions)
6-M6 screw, Depth: 18
A
T mounting area

- 7 -
K-MD30R
LB4（With base plate）、K-MD30R LC4（Without base plate）
*1: When four M6 nuts are loosened, the base plate position can be changed up to 10 mm each in the forward and backward directions.
*2: When two M10 setscrews are loosened, the counterweight can be moved forward up to 10 mm from the position shown in the ejection
direction and up to 65 mm backward.
*3: Height dimension is that of return trough of standard tilt angle 7.50. Dimension in parenthesis is alterable minimum/maximum dimension
in the tilt angle adjustment range.
A
T mounting area
Base plate
Return trough
(Standard tilt angle 7.5°±1°)
(Max. 361)
4-Hexagon socket head
bolt M8
Base plate dimensions
(Top view)
View
Y
(AT mounting dimensions)
7-M6 screw, Depth: 24
A
T mounting area
2-Setscrew M10
Work ejection

- 8 -
6. Transportation and Installation
(1) Transportation
Be sure to transport the body while holding the base or the mount. If the chute or the return trough is held
for transportation, the chute may be deformed or the trough position may deviate.
Note in transporting
This machine is a heavy material. Watch out for dropping in transporting and be cautious enough.
Especially, MD20 and MD30 must not be carried by single person. They must be carried carefully by
more than one personnel or by use of lifting apparatus or hoisting attachment with sufficient lifting
capacity.
* Refer to item 11 Specification for the mass of the body (adding the mass of chute if attached).
(2) Installation
Fix the base firmly with the fixing bolts (fix cushion rubber screw part for the type without base) on the
place (such as a bench) with sufficient strength. Little vibration will be felt when the base is touched in
operation, if the machine is installed properly.
Caution for installation
[1] Be sure to wear safety gloves to prevent the sharp edges of the chute and others from touching
bare hand.
[2] Do not operate the machine on a base with insufficient strength or in an unstable place.
[3] Do not allow the vibrating part of the machine (except the base) to be in contact with some other
things in fixing.
[4] When the machine is inclined in installation, specified capability cannot be obtained. Be sure to
level the machine.
[5] When perform welding work or grinding work nearby the feeder body, protect the feeder body all
over with a protective cover. Incompliance may deteriorate the performance because iron powder
etc. jumps into the machine.
[6] The structure is designed so that clearance is provided between chute mount and return trough.
When such as oil and dust drops through the clearance, provide oil drain / dust exhaust (oil pan)
system additionally for use.
CAUTION
The body is a heavy material. Transport the body
carefully with care not to cause drop.

- 9 -
7. Wiring and Operating Methods
Controller (K-ECF25 as example)
*1 Power cable to the single-phase AC power source (feeder body specified voltage).
In the case of three-phase power source, use two phases out of three. Do not use the remaining one
phase.
(1) Remove transportation fixtures (Red tag) fixing the feeder body and the chute as well as
transportation members, if attached.
(2) Connect power supply. (See the operation manual of the controller for connection in detail.)
(3) Turn the speed adjusting knob of the controller counterclockwise to set the graduation at "0".
(Make sure that the feeder body is free and in no contact with something around.)
(4) Turn on the power switch of the controller. (Confirm lighting of LED on the operation panel.)
(5) Turn the speed adjusting knob of the controller slowly clockwise to set the graduation at a workpiece
speed that matches with supply capacity. Operate this machine under the maximum acceptable
amplitude of leaf spring in the item 8 in order to prevent breakage of leaf spring.
CAUTION
When setting F-V curve and other data for a controller of variable frequency
controllers, make settings conform to the specification and power conditions of
the body. Wrong setting may result in accidents such as burning of the magnet.
For setting for controllers, refer to the Controller Operation Manual.
WARNING
Ensure that the supply voltage is as shown on the machine nameplate (seal
bearing the type, power supply and manufacturer’s serial No.) of the vibrator body.
Be sure to connect the grounding wire of the power source.
Ｌ
Ｎ
１
２
C2
EM
C1
AL1
Y1C
Y1A
・It is connected to the single phaseAC power.
Please connect it to AC100-115V or
AC200-230V according to the voltage of the
main vibration body.
・The frequency is both for 50 and 60Hz.
・Connect green or green/ yellow to the earth.
Power source
Load(Parts feeder)
Green
Red
White
Power cable Load cable
*１

- 10 -
(Note 1) When the machine is incorporated to some apparatus, do not open or close the primary side of
the controller but use external control input terminal in turning on and off.
(Note 2) Power connecting work must be performed by personnel in charge of electric engineering.
When modifying or changing connection, see the operation manual of controller.
(Note 3) When a chute that matches with the shape of specified parts is installed, and indication mark is
found around the controller speed adjusting knob, set the adjusting knob at corresponding
position in use.
(Note 4) When you extend the load wire of the machine, use a wire of size above 2.5 mm2below 10 m.
Also conduct the protective continuity test and make sure that the wire is grounded
appropriately.
(Note 5) See the operation manual of controller in use.
8. Inspection and Adjustment
(1) Adjustment of counterweight
If irregular parts transportation speeds should occur between the front and rear areas on the feed and
alignment side chute, move the counterweight in the forward or backward direction to adjust the speeds.
(Note) Tighten the counterweight fixing screw
securely. Also make sure that the fixing position
of the counterweight is within the moving range
shown in item 5 (Dimension of *2).
(2) Inspection and adjustment of leaf spring of the body
[1] Acceptable maximum amplitude of leaf spring
Operate the machine with the amplitude below that shown in the following table in order to prevent
breakage of leaf spring.
If the machine is used with greater amplitude, the leaf spring may be broken earlier. For measuring
amplitude, stick the attached amplitude mark as a figure shown below and totalize readings of upper
and lower amplitude marks of leaf springs of body/feed side and return side without fail.
Model/
Size Leaf spring part Leaf spring product number Amplitude mm (Upper + Lower)
Body / feeder side K-PLS4-40 ×6 0.7
MD10 Return side K-PLS4-41×7 0.8
Body / feeder side K-PLS4-70 ×12 1.4
MD20 Return side K-PLS4-62×12 1.3
Body / feeder side K-PLS4-86 ×15 1.8
MD30 Return side K-PLS4-100×20 2.0
(Note) When NTN specifies a recommended speed, set the speed
adjusting knob of controller at a corresponding
recommended graduation.
CAUTION
If the counterweight should move beyond the specified movable range, the
setscrew may loosen, resulting in dislocation of the counterweight from the
mounting area, followed by falling.
Counterweight
Counterweight
fixing screw
Amplitude mark
Amplitude mark
Lower:Lower vibrator
Upper：Upper vibrator and Return trough

- 11 -
[2] Caution in attaching and detaching leaf spring
When attaching and detaching the leaf spring, be sure to complete one unit before moving to the next
unit. Do not loosen all the units at the same time.
a) Set the fitting depth of bolts (dimension L includes the depth on upper vibrator side) 1.5 times of
the screw diameter, and change the bolt length when the leaf spring increases or decreases.
* Tighten the bolt securely, using the table below for guide of tightening torque.
Model/
Size Used bolt Tightening torque
MD10
MD20 Hexagon socket head bolt M6 (Strength classification 10.9 or above) Approx 14.7 Nxm (150 kg fxcm)
MD30 Hexagon socket head bolt M10
(Strength classification 10.9 or above) Approx 68.6 Nxm (700 kg fxcm)
Ｌ
b) Apply grease or rust preventive oil between leaf springs (between leaf spring and spacer) in
assembling.
MD10 MD20 MD30
(Note) Do not sandwich dust, chip, etc. between the leaf springs.
[3] Retightening
Check the leaf spring tap bolt and retighten it after actual operating time of about 40 hours.
When the tightening is normal, there is hardly the additional tightening allowance. But, consider this
requirement as retightening of comfortable fitting of the leaf spring.
[4] Correction of fatigue
When the machine is operated with the speed adjusting volume set to the MAX. position at all times,
add 1 or 2 pieces of leaf springs to a leaf spring unit in either one place.
When the machine is operated 40 - 100 hours, the spring constant of leaf spring itself is deteriorated
by repeated stress by vibration, which slightly reduces the amplitude, although the leaf spring
mounting bolt is jointed normally.
Leaf spring
Spacer
Spring pressing plate

- 12 -
[5] Replacement of leaf spring
100% replacement of leaf springs is recommended with the guideline of 1-year operation on the
basis of 8 hours a day.
If amplitude cannot be recovered after correction of set in fatigue described in [4] above, we
recommend that you replace all leaf springs, considering that the end of the life of the leaf spring has
been reached.
(Note) When a leaf spring is needed newly, purchase one referring to the leaf spring product
number in item 11 "Specifications".
(3) Check and adjustment of magnet clearance
Clearance between the magnet and moving iron core is set to those described in the table below in shipment
of the machine from NTN. It is recommended to make it as small as possible to the extent where they are
not in contact in the maximum amplitude, therefore check it from time to time and maintain an appropriate
value.
<Adjusting procedure>
[1] Remove the cover. (Allowed only on single side)
[2] Loosen the moving iron core tightening bolt.
[3] Insert a clearance gauge of the specified dimensions for each body (shown in the follwing table) into
the magnet clearance, push the moving iron core toward the magnet side, and temporarily tighten the
moving iron core locking bolt.
[4] Tighten the moving iron core locking bolt.At that time, take care so that the moving iron core position
set in the Step [3] may not deviate.
[5] Pull out the clearance gauge. Check the parallelism to and clearance in the magnet.
[6] Fit the cover.
Magnet clearance (mm)
Model/Drive system In shipment Maximum
MD10 (Full wave) 1.0
MD20 (Full wave) 1.0
MD30 (Half wave) 2.0
CAUTION
When the magnet clearance is set more than 20% exceeding the maximum value
above in use, the magnet may be burnt. Check the magnet clearance from time to
time and maintain an appropriate value.
Magnet clearance
Magnet
Moving iron core

- 13 -
(4) Adjustment of vibration feeder frequency（Product for construction makers）
The controller applicable to NTN mono-drive 2-way feeder is a variable frequency controller.
Adjustment of number of leaf springs at the body / feed side is unnecessary for power supply
frequency change in the area used. But adjustment of number of leaf springs as the body / feed side
according to installed chute mass and transportation condition is required. Make adjustment referring
to the following.
Vibration characteristic graph
[1] This machine is equipped with vibration characteristic shown in above graph and has two resonance
regions at the body / feed side and return side. When operating, conform the setting frequency of
controller to the resonance region at the body / feed side (higher side). Stable vibration is obtainable
when setting frequency is set a little higher (1~3Hz) than resonance point and speed adjustment knob of
controller is set to proper position.
[2] This machine is equipped with frequency by which stable transportation is possible. Adjust number of leaf
springs for the body / feed side according to installed chute mass.
a．Installed chute mass (Target)
Number of body leaf springs
Installed chute mass MD10、MD30 MD20 Operational driving frequency
Heavy Front & back: 5 each
(Total 10) Front & back: 7 each (Total 14)
Light Front & back: 3 each
(Total 6) Front & back: 5 each (Total 10)
MD10、MD20…85～110Hz
MD30…60～66Hz
(Note) Adjustment of number of springs for return trough side is unnecessary.
b. Transportation condition of return trough
Installed chute mass Number of body leaf springs Remarks
When transportation is slow Reduce number When works at feed side snake their
ways or dance widely, reduction of
number is too much.
When transportation is too fast Increase number
(Note) Range for increase and reduction of number of body leaf springs is about 1 to 4.
[3] When amount of amplitude changes during operation and it is not possible to adjust with the
speed control knob of controller, adjust the frequency referring to above [1], [2] and
Instruction Manual for the controller.
周波数 Hz
振
幅
供給シュート
リターントラフ
ｺﾝﾄﾛｰﾗ設定
周波数
リターン側の
共振域
本体・供給側
の共振域
低高
低
高
Resonance region
at return side Controller
Setting frequency
Resonance region
at body/feed side
id
High
Low
Low HighFrequency Hz
H
Amplitude
Feed chute
Return trough

- 14 -
(5) Angle adjustment of return trough
Tilt angle of return trough is adjustable within the range of ±1° with reference to 7.5°.
For angle adjustment, loosen front and back return trough adjustment screws at supporting point
side and movable side, and change within slide range of elongate hole at movable side. Then adjust
the trough position so that works flow smoothly, and fix firmly.
(6)Adjustment of leaf spring mounting angle for return trough
For leaf spring of return trough, the angle is adjustable in three kinds (17°, 21°[Initial value], 25°）
corresponding to climbing condition of transportation parts. When adjustment is required, follow to
the following procedure.
① Loosen return trough angle adjustment screws of supporting point side and movable side (don’t
dismount).
② Loosen fixing screws of lower leaf spring mounting block at front and back.
③ Loosen fixing screws of
mounting frame (MD10: 2
locations, MD20: 3 locations,
MD30: 5 locations).
④ Loosen fixing screw of angle
setting spacer and dismount the
spacer.
⑤ Slide angle adjustment scale of
mounting frame to conform to
value of mounting angle and
tighten fixing screws of mounting
frame to fix.
⑥ Mount number of angle setting spacers of lower leaf spring mounting blocks at front and back in
the following table corresponding to mounting angle.
Angle
Lower leaf spring
mounting block 17° 21° 25°
Font side (Return upper stream side) Spacer：2 pieces Spacer：1 piece Spacer：Nil
Back side (Return downstream side) Spacer：Nil Spacer：1 piece Spacer：2 pieces
⑦Touch lower leaf spring mounting blocks of front and back to the end face (circular arc face and
wall surface of angle setting spacer side) of mounting frame and tighten fixing screws to fix.
⑧Adjust angle and position of return trough and fix with return trough angle adjustment screws of
front and back.
（Note）Leaf spring for return is easy to bend, therefore tighten up not to be bent.
Movable side
Return trough angle
adjustment screw
Lower leaf spring
mounting block (front)
Supporting point
Angle setting
spacer (front)
Mounting frame
Lower leaf spring
mounting block (back)
Angle setting
spacer (back)
Fixingscrew
Fixingscrew
Fixing screw
Fixingscrew
Lower leaf spring
mounting block (front)
Angle setting spacer
(0, 1, 2 corresponding to angle)
Angle adjustment scale
Mounting frame
Fixingscrew
Fixing screw
Fixingscrew

- 15 -
Counterweight
Auxiliary weight (Sold separately)
(7) Inspection and adjustment of leaf springs for return trough
[1] The return trough leaf springs are shipped from NTN after assembly in appropriate number of
pieces. Adjustment of number of the leaf springs required for the feeder body leaf springs is not
required as a rule.
[2] Relating to change of leaf springs, 100% change of leaf springs is recommended on the yardstick of
1-year operation on the basis of 8-hour operation a day, same as operation of the feeder body. Where
new leaf springs are required, purchase them while referring to the leaf part No. described in the
"Leaf spring Part No." column in item 11 "Specifications".
(8) Coating
Return trough transporting works and coated surface of the chute mount will get dirty due to works
transported and transportation ability of works may be reduced. Check the coated surface from time to
time, and clean the coated surface with water or neutral detergent, if it is found foul.
9. Fitting Work of Attachment
(1) The tilt angle of the return trough inclined surface can
be adjusted by turning the angle adjusting screw
shown in item 4 "Names of Main Component Parts".
Adjust the angle to the climbing ability of works to be
fed.
Moreover, adjust the height of backing plate of feed
track (right figure) so that works do not outflow from
behind of the chute mount due to the mounting.
(2) When climbing performance of trough is not ensured depending on works transported even if the body
was adjusted, bond commercially available belt material on the feed track surface.
<Belt: example>
No. Denomination Top surface
1 Transportation belt (MITSUBOSHI) NEOFLEXSTART NS82UN2/2G Coarse mesh
2 Transportation belt (NITTA) GU-12A Pear-skin finish
(Green)
(3) When irregular speeds occur on the feed side chute depending on works transported and chute
configuration, adjust the movement of the counterweight referring toAdjustment of counterweight of
(1) of clause 8. Moreover, when the counterweight mass is insufficient after adjustment, mount an
auxiliary weight (Sold separately).
Feed track
backing plate

- 16 -
10. Troubleshooting
If any trouble should be found, check the following points:
(1) No vibration at all
In this case, distinguish the trouble between mechanical system and electric system as shown below for
checking. Insert an iron piece to the magnet clearance as shown below with power switch turned on.
[1] When the piece is sucked in strongly
(including small vibration)
Electric system is normal. Accordingly, it is due to
either that setting frequency of the controller is
not appropriate or that problems such as setting of
number of body leaf springs exist.
[2] When the piece is not sucked in at all
Trouble of electric system including controller and magnet. However, for the controller with sensor,
remove works since such a condition that the detection head is detecting works is considered. Moreover,
when the sensor is detecting error, recheck such as optical axis setting and proximity distance.
Further, check the following points for electric system for safety:
a) Power supply is connected properly. (See the item 7 "Wiring and Operating Methods".)
b) Fuse of controller is not melted, and overcurrent protection function is not active.
c) External control input terminal of controller is connected correctly as well as correct setting.
(For details, refer to the Controller Operation Manual.)
d) Magnet coil is not broken.
(2) Vibration is found,
although amplitude
is insufficient.
[1] Imperfect power source (such as 100 V connection in spite of 200 V
specification.)
[2] Leaf spring mounting bolt is not loosened.
[3] Tightening bolt of chute etc. is not loosened.
[4] Magnet clearance is not too large.
[5] Omission of removal of fixtures used for transportation
[6] Too heavy chute mass
[7] Improper number of leaf springs to the mass of the chute
[8] Foreign matter is not pinched in space between the chutes
(3) Amplitude is
decreasing during
use.
[1] Leaf spring is not fatigued.
[2] Leaf spring mounting bolt is not loosened.
[3] Leaf spring is not damaged, and rust is not found.
[4] Foreign substance is not pinched in the magnet clearance.
[5] Chute tightening bolt is not loosened.
(4) Unusual metallic
noise
[1] Magnet clearance is not so small as to allow contact in vibration.
[2] Inclusion of foreign matter in space between chutes
[3] Excessive amplitude
[4] Omission of removal of fixtures used for transportation
[5] Deformed cover interfering with vibrator
When you inform NTN of trouble condition with unknown cause, let them know the detail as far as
possible with reference to the above so that they can take a measure as soon as possible.
Scale made of iron, etc.
Magnet clearance
Magnet
Moving iron core

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11. Specifications
K- MD 10 R B 1
Spec. with base K-MD10Ｒ
ＬB1 K-MD10Ｒ ＬB2 K-MD20Ｒ
ＬB1 K-MD20Ｒ ＬB2 K-MD30Ｒ ＬB4
Product No. Spec. without base K-MD10Ｒ
ＬC1 K-MD10Ｒ ＬC2 K-MD20Ｒ
ＬC1 K-MD20Ｒ ＬC2 K-MD30Ｒ
ＬC4
Body specifications (Part No.) K-S10B(C)1 K-S10B(C)2 K-S20B(C)1 K-S20B(C)2 K-S30B(C)4
Power voltage (V) 100 200 100 200 200
Current consumption (A) 0.4 0.2 1.0 0.5 0.9
Power consumption (VA) 40 100 180
Operating frequency (yardstick) 90–106 Hz 85–103 Hz 60–66 Hz
Body spring angle (θ°) 12°15°
Return trough
(coating) Aluminum casting, 2-row feed course (urethane, green)
Return trough tilt angle
(Variable range) Standard 7.5°(6.5–8.5°)
Installed chute length
(mm) 450–600 550–800 850–1100
Installed chute mass
(kg) *1 2 5 15
Work accommodation L
(Max. value in manual run) 0.15 (0.3) 0.3 (0.7) 0.6 (1.6)
Magnet product number
(quantity) K-PMG-111-1 (1 piece) K-PMG-121-1 (1 piece) K-PMG-211-1 (1 piece) K-PMG-221-1 (1 piece) K-PMG-321 (1 piece)
Cable thickness x length
(from the center) 1.0 mm2×1.1 m
Body K-PLS4-40 ×6 K-PLS4-70 ×12 K-PLS4-86 ×15
product number Return K-PLS4-41 ×7 K-PLS4-62 ×12 K-PLS4-100 ×20
Body 5 sheets ×2 positions = 10 sheets 7 sheets ×2 positions = 14 sheets 5 sheets ×2 positions = 10 sheets
setting number Return 2 sheets ×2 positions = 4 sheets
Body 42 ×54 (40) ×0.6 50 ×88 (70) ×1.2 80 ×106 (86) ×1.5
Leaf spring
dimension (mm)
width ×Length (hole
pitch) ×plate thickness Return 25 ×52 (41) ×0.7 38 ×74 (62) ×1.2 50 ×120 (100) ×2
Strength classification of leaf
spring fixing bolt 12.9
Body 14.7 Nxm [150 kgfxcm]
( M6 ) 14.7 Nxm [150 kgfxcm] ( M6 ) 68.6 Nxm [700 kgfxcm] ( M10 )
Leaf spring tightening
torque
(Screw size) Return 8.8 Nxm [90 kgfxcm]
( M5 ) 14.7 Nxm [150 kgfxcm] ( M6 ) 34.3 Nxm [350 kgfxcm] ( M8 )
*1 The installed chute mass value is a mass of an additionally installable chute.
Voltage･drive system (1: 100V Full wave, 2: 200 V Full wave, 4: 200 V Half wave)
Design change code (B: with base, C: without base)
Feed direction (R: CW, L: CCW)
Body size
Body type

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Spec. with base K-MD10Ｒ
ＬB1 K-MD10Ｒ ＬB2 K-MD20Ｒ
ＬB1 K-MD20Ｒ ＬB2 K-MD30Ｒ ＬB4
Product No. Spec. without base K-MD10Ｒ
ＬC1 K-MD10Ｒ ＬC2 K-MD20Ｒ
ＬC1 K-MD20Ｒ ＬC2 K-MD30Ｒ
ＬC4
Appearance paint color Black / silver (Coating: Green)
with base 10.5 19 54
Mass (kg) without base 9 15.5 46
Tooling drop mm
［Return feed track upper
stream edge – Feed side
bottom face］
At time of 7.5° standard assembly
26 32 46
Applicable controller K-ECF25 (Frequency variable)
yThe content of this instruction manual is subject to change without prior notice due to functional
improvements.
Published: July 1, 2013
NTN Technical Service Corporation
1578 Higashi-Kaizuka, Iwata, Shizuoka 438-8510, Japan
PHONE: [phone], FAX: [phone]
All rights reserved. © NTN Technical Service Corporation 2013