No. PMPH022E-c
Before use
Read this Instruction Manual
thoroughly, and operate themachine correctly.

INSTRUCTION
MANUALNTN 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 theInstruction 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 transportand missing parts. If any trouble isfound, inform the sales officenearby.



CONTENTS
Introduction ･････････････････････････ 1
1. Before Use ･･･････････････････････ 1
2. Precaution for Safety ･････････････ 2
3. Operating Principle ･･･････････････ 4
4. Names of Main Component Parts ･･ 4

When packaging of the machine andholding fixture for transport are
attached to the body, be sure to
remove them before use.

5. Dimensional Drawing ･････････････ 5
6. Transportation and Installation ････ 8
7. Wiring and Operating Methods ････ 9

Be sure to use NTN controller forthis machine.
Otherwise, specified performance ofthe machine may not be obtained.

8. Inspection and Adjustment ･･･････ 10
9. Fitting Work of Attachment ･･･････ 15
10. Troubleshooting ･････････････････ 16
11. Specifications ･･･････････････････ 17

-1-

2.

Precaution for Safety

This machine is designed and manufactured for parts feeding equipment basedon a concept of trouble-free operation and labor saving, while responsibility onuser 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 agrounding 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 forenvironmental condition in use.)y This 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.
y Fix the machine securely after installation.
y Do not conduct the installation and assembly work with bare hands.
y As 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 tothe chute. If welding ground is insecure, the grounding wire connecting the body and thecontroller may be burnt, resulting in electric shock or leakage.

-2-

 For proper use[1] NTN mono-drive 2-way feeder is a vibrating machine with a mechanism to align specified parts in acertain direction mounted on a chute to feed parts in bulk state to a specified position in alignment andregular series. Do not use the machine for other purposes such as equipment for material test andsieve.
[2]

Use the NTN mono-drive 2-way feeder in conformance to instructions in this operation manual andpackaged 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 withdesign change code A of 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 suchspecified parts can be fed.

(Note 3)

Environmental condition in use
Ambient working temperature
Ambient working humidity
Working altitude
Storage temperature in transport

Atmosphere of use place

0 to 40°C
30 to 90% (Free from condensation)
Below 1,000 m−10 to 50°C
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 ofchange 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 aspecial expert. Further, make sure that only authorized personnel are in charge of operation.

-3-

3.

Operating Principle

NTN mono-drive 2-way feeder is a return type alignment feeder enabled to store, align and feed parts bymeans 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 chuteare 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 ofmagnet.
Chute part(2) Vibrations of return troughLeaf spring unit for return is installed on the lower
Return vibrations
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
Body and feed vibrations
vibration of the different direction from that of aligningand feeding side.

4.

Names of Main Component Parts
Chute mountingareaWork ejection
Chute mount

Return troughReturn trough angle
adjusting screw
Chute(Not included in the body)

Upper vibrator

Upper leaf spring
mounting block
Counterweight
Lower leaf spring
mounting blockAngle setting spacer
Mounting frame

Body / feed side leaf spring
Front and back：2 positions
Return side leaf spring
Front and back: 2 positions

CushionrubberReturn mounting plate(Cover)MagnetMoving iron
core

Base

-4-

For detailed dimensions of the linear feeder body, referto the linear feeder specifications and dimensions
described in XI/J and subsequent paragraphs in theParts Feeder General Catalog: CAT. No. 7018.

5. Dimensional Drawing

K-MD10 RL B 12 （With base plate）、K-MD10 RL C 12 （Without base plate）

AT mounting area
Work ejection

Return trough(Standard tilt angle 7.5°±1°)(Max. 189)

(Max. 205)

AT mounting area

Base plate
4-Nut M6
2-Setscrew M10

Base plate dimensions(Top view)

View Y(AT mounting dimensions)5-M5 screw, Depth: 15*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)
(Note 2)

As for a type without base plate refer to the base plate dimension drawing in installation.
When manufacturing a chute, observe the acceptable dimension in the drawing and the massdescribed in item 11 Specification. Make a chute as light as possible to the extent in which its
rigidity is not weakened.

-5-

K-MD20 RL B 12 （With base plate）、K-MD20 RL C 12 （Without base plate）

AT mounting area
Work ejection

AT mounting area

(Max. 251)

Return trough(Standard tilt angle 7.5°±1°)4-Nut M6

2-Setscrew M10

Base plate dimensions(Top view)

Base plate

View Y(AT mounting dimensions)

6-M6 screw, Depth: 18*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.

-6-

K-MD30 RL B4（With base plate）、K-MD30 RL C4（Without base plate）

AT mounting area

Work ejection

AT mounting area

(Max. 361)

Return trough(Standard tilt angle 7.5°±1°)2-Setscrew M10

Base plate dimensions(Top view)

4-Hexagon socket headbolt M8

Base plate

View Y(AT mounting dimensions)

7-M6 screw, Depth: 24*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.

-7-

6.

Transportation and Installation
CAUTIONThe body is a heavy material. Transport the bodycarefully with care not to cause drop.

(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 bymore 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 theplace (such as a bench) with sufficient strength. Little vibration will be felt when the base is touched inoperation, 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 otherthings in fixing.
[4] When the machine is inclined in installation, specified capability cannot be obtained. Be sure tolevel the machine.
[5] When perform welding work or grinding work nearby the feeder body, protect the feeder body allover 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.

-8-

7.

Wiring and Operating Methods
WARNING
Ensure that the supply voltage is as shown on the machine nameplate (sealbearing the type, power supply and manufacturer’s serial No.) of the vibrator body.
Be sure to connect the grounding wire of the power source.

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.

Controller (K-ECF25 as example)

Y1A
Y1C
AL1

C1
EM
C2

２
１
Ｎ
Ｌ

Load(Parts feeder)
Power source

・It is connected to the single phase AC power.
Please connect it to AC100-115V or
AC200-230V according to the voltage of themain vibration body.
・ The frequency is both for 50 and 60Hz.
・ Connect green or green/ yellow to the earth.

*１
Green
Red
White

Load cable
Power cable*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 astransportation 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.

-9-

(Note 1)(Note 2)
(Note 3)(Note 4)(Note 5)

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.
Power connecting work must be performed by personnel in charge of electric engineering.
When modifying or changing connection, see the operation manual of controller.
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.
When you extend the load wire of the machine, use a wire of size above 2.5 mm2 below 10 m.
Also conduct the protective continuity test and make sure that the wire is grounded
appropriately.
See the operation manual of controller in use.

8.

Inspection and Adjustment(1)

Adjustment of counterweight

CAUTION
If the counterweight should move beyond the specified movable range, thesetscrew may loosen, resulting in dislocation of the counterweight from themounting area, followed by falling.
If irregular parts transportation speeds should occur between the front and rear areas on the feed andalignment 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 positionof the counterweight is within the moving range
shown in item 5 (Dimension of *2).

Counterweight

Counterweightfixing screw(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 upperand lower amplitude marks of leaf springs of body/feed side and return side without fail.
Upper：Upper vibrator and Return troughModel/
Size

Leaf springpart

Leaf spring
Amplitude mm
product number (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.

- 10 -

Amplitude markLower:Lower vibrator

Amplitude mark[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 ofthe 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 M6Approx 14.7 Nxm(Strength classification 10.9 or above)(150 kg fxcm)

MD30

Hexagon socket head bolt M10
Approx 68.6 Nxm(Strength classification 10.9 or above)(700 kg fxcm)

Ｌb) Apply grease or rust preventive oil between leaf springs (between leaf spring and spacer) inassembling.
MD10 MD20 MD30
Leaf spring
Spring pressing plate

Spacer(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 thisrequirement 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.

- 11 -

[5] Replacement of leaf spring
100% replacement of leaf springs is recommended with the guideline of 1-year operation on thebasis 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 productnumber 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 shipmentof 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 themoving 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

Model/Drive system

Magnet clearance (mm)In shipment

Maximum

MD10 (Full wave)

1.0

MD20 (Full wave)

1.0

MD30 (Half wave)

2.0

MagnetMoving iron core

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 totime and maintain an appropriate value.

- 12 -

(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 sideaccording to installed chute mass and transportation condition is required. Make adjustment referringto the following.
高 Resonance regionHigh

リターン側の共振域

Controller
ｺﾝﾄﾛｰﾗ設定

at return side

周波数
Setting
frequency

Vibration characteristic graph

Amplitude

Resonance
region
本体・供給側atの共振域
body/feed side

id

振
幅

Feed chute
供給シュート
リターントラフ
Return troughLow
低周波数 HzHz
Frequency

Low
低

High
高

H

[1] This machine is equipped with vibration characteristic shown in above graph and has two resonanceregions at the body / feed side and return side. When operating, conform the setting frequency ofcontroller 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 ofcontroller 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
Operational driving frequency
MD10、MD30
MD20
Front & back: 5 each
Front & back: 7 each
MD10、MD20…85～110Hz
Heavy(Total 10)(Total 14)
MD30…60～66Hz
Front & back: 3 each
Front & back: 5 eachLight
(Total 6)(Total 10)(Note) Adjustment of number of springs for return trough side is unnecessary.
b. Transportation condition of return troughNumber of body leaf springs
Installed chute mass
When transportation is slow

Reduce number

Remarks
When works at feed side snake theirways 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] andInstruction Manual for the controller.

- 13 -

(5) Angle adjustment of return troughTilt 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 pointside 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.
Return trough angle
adjustment screw

Movable sideFixAngle setting
spacer (back)

sc
re
w

Lower leaf spring
mounting block (back)Fix

Supporting point

xin

gs
cr
ew

in
g

sc
re
w

in
g

Fi

g scr
Fixin

Mounting frame

Lower leaf spring
mounting block (front)

Angle setting
spacer (front)ew(6)Adjustment of leaf spring mounting angle for return trough

w
re
sc

sc
ing

Fix
ing
scr
ew

ng
xi
Fi

Fix

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 ofAngle adjustment scale
mounting frame (MD10: 2
locations, MD20: 3 locations,
MD30: 5 locations).
④ Loosen fixing screw of angle
setting spacer and dismount theLower leaf spring
spacer.
mounting block (front)⑤ Slide angle adjustment scale ofAngle setting spacer
mounting frame to conform to
Mounting frame(0, 1, 2 corresponding to angle)
value of mounting angle andtighten 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
17°
21°
25°
rew

mounting block

Spacer：2 pieces
Spacer：1 pieceSpacer：Nil
Back side (Return downstream side)
Spacer：Nil
Spacer：1 pieceSpacer：2 pieces⑦Touch lower leaf spring mounting blocks of front and back to the end face (circular arc face andwall 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 offront and back.
（Note）Leaf spring for return is easy to bend, therefore tighten up not to be bent.
Font side (Return upper stream side)- 14 -

(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 ofpieces. 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 totime, 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 canbe 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.
Feed track
backing plate
Moreover, adjust the height of backing plate of feed
track (right figure) so that works do not outflow frombehind of the chute mount due to the mounting.
(2) When climbing performance of trough is not ensured depending on works transported even if the bodywas adjusted, bond commercially available belt material on the feed track surface.
<Belt: example>
Top surface
No.
Denomination
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 chuteconfiguration, adjust the movement of the counterweight referring to Adjustment of counterweight of(1) of clause 8. Moreover, when the counterweight mass is insufficient after adjustment, mount an
auxiliary weight (Sold separately).
Counterweight
Auxiliary weight (Sold separately)- 15 -

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 forchecking. Insert an iron piece to the magnet clearance as shown below with power switch turned on.
[1] When the piece is sucked in strongly
Magnet clearance(including small vibration)
Electric system is normal. Accordingly, it is due toeither that setting frequency of the controller is
not appropriate or that problems such as setting of
number of body leaf springs exist.
Scale made of iron, etc.
MagnetMoving iron core[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 isdecreasing during
use.

[1]
[2]
[3]
[4]
[5]

(4)

Unusual metallic
noise

Leaf spring is not fatigued.
Leaf spring mounting bolt is not loosened.
Leaf spring is not damaged, and rust is not found.
Foreign substance is not pinched in the magnet clearance.
Chute tightening bolt is not loosened.

[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.

- 16 -

11. Specifications
K- MD 10 R B 1
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 typeSpec. with base

Ｒ
K-MD10Ｌ
B1

Ｒ
K-MD10Ｌ
B2

Ｒ
K-MD20Ｌ
B1

Ｒ
K-MD20Ｌ
B2

Ｒ
K-MD30Ｌ
B4

Spec. without base

Ｒ
K-MD10Ｌ
C1

Ｒ
K-MD10Ｌ
C2

Ｒ
K-MD20Ｌ
C1

Ｒ
K-MD20Ｌ
C2

Ｒ
K-MD30Ｌ
C4

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

Product No.

Body specifications (Part No.)Power consumption (VA)
Operating frequency (yardstick)
Body spring angle (θ°)

40

100

180

90–106 Hz

85–103 Hz

60–66 Hz

12°

Return trough(coating)
Return trough tilt angle(Variable range)
Installed chute length(mm)
Installed chute mass(kg) *1
Work accommodation L(Max. value in manual run)
Magnet product number(quantity)
Cable thickness x length(from the center)

15°
Aluminum casting, 2-row feed course (urethane, green)Standard 7.5° (6.5–8.5°)

450–600

550–800

850–11002

515

0.15 (0.3)

0.3 (0.7)

0.6 (1.6)

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)

1.0 mm2 × 1.1 m

Body

K-PLS4-40 × 6

K-PLS4-70 × 12

K-PLS4-86 × 15

ReturnK-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

product number
Leaf spring

setting number
2 sheets × 2 positions = 4 sheets

Returndimension (mm)Body

42 × 54 (40) × 0.6

50 × 88 (70) × 1.2

80 × 106 (86) × 1.5

width ×Length (holepitch) ×plate thickness

Return25 × 52 (41) × 0.7

38 × 74 (62) × 1.2

50 × 120 (100) × 2

Strength classification of leaf
spring fixing bolt

12.9

14.7 Nxm [150 kgfxcm]
14.7 Nxm [150 kgfxcm]( M6 )( M6 )
8.8 Nxm [90 kgfxcm]
14.7 Nxm [150 kgfxcm]
Return( M5 )( M6 )*1 The installed chute mass value is a mass of an additionally installable chute.

Leaf spring tightening
torque(Screw size)

Body- 17 -

68.6 Nxm [700 kgfxcm]( M10 )
34.3 Nxm [350 kgfxcm]( M8 )

Spec. with base

Ｒ
K-MD10Ｌ
B1

Ｒ
K-MD10Ｌ
B2

Ｒ
K-MD20Ｌ
B1

Ｒ
K-MD20Ｌ
B2

Ｒ
K-MD30Ｌ
B4

Spec. without base

Ｒ
K-MD10Ｌ
C1

Ｒ
K-MD10Ｌ
C2

Ｒ
K-MD20Ｌ
C1

Ｒ
K-MD20Ｌ
C2

Ｒ
K-MD30Ｌ
C4

Product No.
Appearance paint color
Mass (kg)Black / silver (Coating: Green)with base

10.5

19

54

without base

9

15.5

46

26

32

46

Tooling drop mm［Return feed track upperstream edge – Feed side
bottom face］
At time of 7.5° standard assembly
Applicable controller

K-ECF25 (Frequency variable)y The 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: 81-538-37-8104, FAX: 81-538-37-8128

All rights reserved. ©NTN Technical Service Corporation 2013- 18 -