№PMPH003E-b

Before Use
Read the Instruction Manual to the last ,and operate the machine correctly.

INSTRUCTION MANUALＮＴＮ Bowl Feeder
G50/G63

Introduction
Thank you for your purchase of the ＮＴＮ Bowl Feeder. For correct operation of the bowl feeder,
read the 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. User is requested to store the Instruction
Manual carefully to be able to read it again any time soon after reading.

1. Before Use

Contents
Page

Introduction ････････････････････････ 1□ When this machine is delivered to you,please check if there is any damage orpart missing during transportation. If any
defect is found, please contact to thenearest sales office.
□ If fixtures for packing and transportation
are mounted on the machine, be sure to
remove the fixtures before use.
□ Be sure to use ＮＴＮ controller and bowl
for the machine. When controller andbowl used are other than those of ＮＴＮ,
the specified performance of the machine
may not be obtained.

１. Before use･･････････････････････ 1
２. Precaution for safety ･･････････ 2～3
３. Operating principles ･････････････ 4
４. Main structure and names ････････ 4
５. Dimensional drawing･････････････ 5
６. Transportation and installation･････ 6
７. Wiring and running methods ･･･ 7～8
８. Inspection and adjustment ････ 8～11
９. Troubleshooting ････････････････ 12
10. Specifications ･･････････････13～14－1－

2. Precaution for Safety
This machine is designed and manufactured as a part feeder based on the conceptof trouble free and laborsaving. However, a user of the machine also has animportant responsibility for safety. Be sure to read this Instruction Manual carefully
before use, and to strictly observe the following safety instructions as well as
warning and caution labels adhered to the body.

WARNINGCAUTION

Indicates a potentially hazardous situation which, if not
avoided, will result in death or serious injury.
Indicates a potentially hazardous situation which, if not
avoided, will results in injury or property damage only.

WARNING
Electric equipments have highest risk on danger. Be sure to connect a grounding
cable. Electric shock may be caused, unless this machine in grounded.
Do not use the machine where flammable gas exists. Explosion or fire hazard
may be caused.

CAUTION
Do not use the machine in a place exposed to splash of water, outdoors, or ina place of extremely low temperature or high temperature and high humidity.
(Refer the next page for environment conditions for use)
・This machine is heavy (Refer the spec. of clause 10 for weight). Whentransporting the machine, be sure to wear safety shoes and take care not todrop the machine.
・Be sure to fix the machine securely after installation.
・Be careful not to work touching with bare hands during installation and assembly.
・Not to touch the sharp edge of the bowl equipped with attachment with barehands. Wear protective gloves without fail.
Do not use the machine on a base with insufficient strength or in an unstable place.
The specified performance of the machine may not be ensured.
Do not install the body in inclination. The specified performance of the machine may
not be ensured.
Please do not scratch, pull or forcibly bend the wiring. Moreover, when a heavything is put on it, or it is pinched, the wiring will damage. It causes a fire or anelectric shock.
When welding to the bowl, be sure to connect the grounding clip of the welding
machine to the bowl securely. If grounding for welding is incomplete, the grounding
wire connecting the body to the controller will burn, possibly resulting in electric
shock or electric leakage.

－2－

□ For correct use(1) ＮＴＮBowl feeder is a vibrating machine equipped with a function of aligning thedirection of specified parts in the bowl, which lines up and transfers parts in bulk. Do not
use the machine for other purposes, e.g. equipments for material test and vibrating
screen.
(2) Operate the NTN bowl feeder in accordance with instructions given in this Instruction
Manual. Refer to paragraph 10 for the engineering specifications.
(3) Be sure to use ＮＴＮController and Bowl for this machine. Also use controller,
and power source conforming to this machine.

bowl(4) Generated noise level differs depending upon the machine specifications and partstransferred. If the noise level exceeds a permissible limit, implement noise proofing
measures e.g. use of sound proof cover.

(Note 1) When the machine is not in perfect condition (abnormal noise, abnormal
vibration and part missing etc.), do not use the machine.
(Note 2) In case that the aligning mechanism to line up the specified parts is equippedwith the bowl, parts other than specified ones are not allowed to be loaded.
(Note 3) Environment condition for use
Ambient temperature

0～40℃

Ambient humidity

30～90% (No condensation allowed)

HeightMax. 2000ｍ

Storage temperature duringtransportation-10～50℃
Not exposed to splash of water,

Ambient atmosphere atplace of use

chemicals etc..
Flammable gas and corrosive gas are notallowed.
Must be used indoor.

□ Compliance items of user
(1) Be sure to follow this Instruction Manual during any work such as operation,
maintenance and repair etc.
(2) Be sure to avoid the use which may affect safety of ＮＴＮ Bowl feeder. When any signaffecting safety is found, report the content to ＮＴＮ.
(Note) Installation, operation, maintenance and repair of ＮＴＮ Bowl feeder must be
conducted by professional engineer(s). Be sure to avoid the operation by person
other than ones concerned.

－3－3. Operating Principles
ＮＴＮ bowl feeder has the bowl connected to the lower vibrator by means of the leaf springprovided with a certain angle, and the bowl is rotated and vibrated with a magnet, so that works
in the bowl are thrown upward aslant, resulting in little by little advancement. The relation
between the bowl and the leaf spring is so set that resonance may be nearly achieved to thesuction frequency of the magnet. As a result, large vibrations can be generated with a small
exciting force.

4. Names of Main Component Parts
K-G50
Height adjusting bolt M16

Bowl

Separation bottom

Bowl mounting adapter
Upper vibrator
Oil drain pipe

Moving iron coreCover
Oil drain chute

MagnetLeaf spring
Lower vibrator
Free set baseController

Height adjusting bolt M16
Free set clamp

Cushion rubber

K-G63
Bowl
Separation bottom
Bowl mounting adapter
Upper vibrator
Cover

Moving iron core
Leaf spring

Oil drain chute

MagnetOil drain pipe

Lower vibrator
MagnetController
Cushion rubber
Base(Note) The shapes of the bowl and the controller may be different from those shown above.

－4－5. Dimensional Drawing
Ｒ
Ｋ－Ｇ５０Ｌ
１Ｍ４

Ｒ
Ｋ－Ｇ５０Ｌ
１Ｇ４

Ｒ
Ｋ－Ｇ５０Ｌ
１Ｔ４

4-M12 oblonghole (±3°)

3-Hexagon
head bolt M16

3-Hexagon
head bolt M16

Bowl mounting surface

3-Hexagon
head bolt M16
Bowl mounting surface

Bowl mounting surface

Cushion rubber
mounting

Controller
Free setting base dimensional drawing(Top view)
Ｒ
Ｋ－Ｇ６３Ｌ
２Ｍ４

Ｒ
Ｋ－Ｇ６３Ｌ
２Ｇ４

Ｒ
Ｋ－Ｇ６３Ｌ
２Ｔ４

8-Hexagon
head bolt M10

Bowl fixture

Bowl mounting
mounting surface

4-M10 tapping
throughtapping throughBowl mounting adapter
mounting surface

Controller
Base dimensional drawing (top view)－5－

Oil drain chute6. Transportation and Installation
CAUTION
This machine is heavy. Be sure to work carefully with the hoisting accessory or the like asshown below for transportation. Falling may lead to a serious accident.

(1) Transportation
Remove the bowl (with adapter) and theseparation bottom, set a wire rope, a nylon
slinger or the like on the upper vibrator, andUpper vibrator

Upper vibrator

lift the vibrating body for transportation.

□ Precautions for transportation(1) Use a lifting device and a hoisting accessory of sufficient lifting capacity in considerations of individual
body masses (in the case of a type provided with a bowl, the bowl mass should be added). Refer to thespecifications of paragraph 10 for the body weight.

(2) Be sure not to place hands and foot under the lifted body during transportation.
(3) Do not move the body holding it.

(2) Installation
Fix the machine securely with the base free set clamps (3 places) or by making use of the tappedholes (4 places).

Base clamp（別売品）
Optional
Setscrew
Free set clamp□ Precautions for installation(1) Conduct assembly and setting with sufficient care taken for deformation of the bowl and the attachment.
(2) Wear protective gloves so that the bare hands may not touch with the sharp edge of the bowl attachment
and others.
(3) Do not use the machine on the base lacking in sufficient strength or in an unstable place.
(4) Do not contact the vibrating body (except. the base) of the machine with others for fixing.
(5) When this machine is installed in inclination, its specified performance may not be ensured. Be sure tocheck the levelness after installation.
(6) When welding work or grinding work is intended in vicinity of the bowl feeder, be sure to fit the protection
cover over the whole of the bowl feeder. Otherwise, iron powder may fly into the machine to spoil theperformance.

－6－7. Wiring and Operating Methods
WARNING
Ensure the source voltage as specified on the machine nameplate of the vibrating
body (Type, power source and manufacturer’s serial No. seal). Be sure to connect
the grounding wire of the power source.

CAUTION
Ensure that the setting of each controller for the controller equipped with a selector
switch (All wave/Half wave, 50Hz/60Hz, 100V/200V etc.) and the frequency variable
controller equipped with a F-V curb setting are in accordance with the bodyspecifications and the power source condition. Otherwise, an accident such as a magnet
seizure may be caused. Refer to the Instruction Manual for the controller for the settingof the selector switch and the F-V curb.

G50
Controller(Ex. K-ECH45)
２
１
Ｎ
Ｌ

Bowl feeder

Earth*1 Connection to single-phase AC（AC200～230V

50/60Hz）

Red (or black 1)

Load cable

Power code

White (or black 2)
Green (or green/yellow) to be connected to the grounding

G63
Controller(Ex. K-ECK96)

K-ECK96
RUN Vib. A

RoHS

LIMIT

POWER
ON

FUNC
RESET

RUN
JOG

SPEED ADJ.
DATA
ENTER

STOP

Bowl feeder

OFF
MIN

MAX

V. F . CONTROLLER
AC200-230V 50/60Hz 12A

JAPAN

L N 1 2Earth
*1 Connection to single-phase AC（AC200～230V

50/60Hz）

Red (or black 1)

Load cable

Power code

White (or black 2)
Green/yellow (or green) to be connected to the grounding.

*1 In the case of 3-phase power supply, use two phases out of three. Do not use theremaining one phase.
－ 7－(1) When the chute and the bowl feeder are equipped with fixtures for transportation, remove
those fixtures.
(2) Connect the power source (Refer to the Instruction Manual of the controller for thedetailed wiring method).
(3) Turn the SPEED ADJ volume counterclockwise up to the position of scale “0”.
(Make sure that the bowl feeder is not in contact with anything and is in free condition)(4) Load parts into the bowl and 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 aworkpiece 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 breakageof leaf spring.
(Note 1) When assembly is intended with an equipment, Do not open and close on the primaryside of the controller for “ON-OFF”. Use the external control input terminals for“ON-OFF”.
(Note 2) Connection work of the power source must be conducted by an electrical engineer. Referto the Instruction Manual for the controller for modification or alteration of wiring.
(Note 3) When the bowl is equipped with an attachment, and the indication mark is provided on the
speed adjustment volume of the controller, set the adjustment volume to that position foruse.
(Note 4) When the loading wire is extended by your company, make sure that the wire size must
be more than 2.5mm2 and its length must be less than 10m. Further more, conduct theelectric continuity test and confirm if the grounding is properly connected.
(Note 5) Refer to the Instruction Manual for the controller for the controller used.

8. Inspection and Adjustment(1) Inspection and adjustment of leaf springs① Max. allowable amplitude of leaf spring
Operate the machine under an amplitude as shown in the table below to prevent break of
the leaf spring. When the machine is operated at an amplitude larger than the value
shown, the leaf spring may possibly break at an early time. When the amplitude ismeasured, adhere the supplied amplitude marks as shown below, and be sure to sum
the readings of the upper and the lower amplitude marks.
Amplitude mark(Upper vibrator)vibrator)

Type・
size

Leaf spring part No.

G50・1

K-PLS2-180×40

3.3

G63・2

K-PLS2-250×70

3.6

Amplitude(mm)(upper area + lower area)

Amplitude mark (Lower vibrator)(Note) When a recommended speed is designated by ＮＴＮ, adjust the volume position to
the recommended scale.
－ 8－

② Precautions for attachment/detachment of leaf spring
When attaching or detaching leaf springs, be sure to finish the attaching or detaching work of
one unit before going to the next unit. Never loosen springs of all units at the same time.

a)Change the bolt length
according to the increase or
decrease in the number ofsprings on assumption thatthe required bolt bite length(dimension L) is at least 2
times as large as the screw
diameter.

Use a heat treated nut

Specially made thick washer(Ordinal washer not allowed)b) Place spacers between leaf
springs, and apply grease orSpacerSpacerrust preventative oil between

Apply

the spring and the spacer.

greaseorrust preventative oil

At that time, make sure not
to include dirt and chips
between them.
c) Tighten leaf springs securely at

Be careful of top andbottom directions

Heat treated nut

guideline torque shown below.

Bolt shall protrude
from the nut surface
without fail

After the completion of leaf springadjustment, apply grease or rustTightening torquepreventative oil to the whole part ofleaf spring. At the time of tightening,
be sure that directions of spacers arealigned with ones of leaf springs.

Type・
Size

Bolt

Tightening torque

Remarks

G50・1

Hexagon socket head bolt M18（Strength grade :12.9 or more）

Approx.400N･m(Approx.4100 ㎏ f･cm）

Under full power of one
hand using tool with arm
length of 500mm＊1 Leaf spring tightening bolt

Under full power of one
Approx. 490N･m
hand using tool with arm（Approx. 5000 ㎏ f･cm）
length of 600mm

G63・2
＊1

M20

When the leaf spring tightening bolt is newly required, contact NTN.

③ Retightening
Check the leaf spring tightening bolts after actual operation for approx. 40 hours, andretighten the bolts.
When the bolts have been tightened to normal torque, there is hardly allowance for
additional tightening, but consider this requirement as retightening to ensure comfortable
fitting of leaf springs.
－ 9－

④ Correction of set in fatigue
When the SPEED ADJ. volume comes to be used at the max. position at all time,
add one or two pieces of leaf springs to any one place of the leaf spring unit.
Even if the leaf spring tap bolts are fastened normally, the amplitude may decrease
negligibly owing to the repetitive stress resulting from vibration after the machine is run for
40 to 100 hours.
⑤ Replacement of leaf springs
Replacement of all leaf springs is recommended after run of the machine for one year on thebasis of 8 hour run a day as a guideline.
If the amplitude can not be recovered even after correction of set in fatigue in theparagraph ④ above, it is considered that the leaf springs have been reached the end oflife. 100% replacement of leaf springs is recommended.
(Note) When new springs are required, purchase them while referring to the “Leaf spring partNo.” in the Specification of paragraph 10.

(2) Adjustment of magnet clearance
The clearance between the magnet and the moving iron core is set to the value as tablebelow at the shipment of the main body from NTN. But, the narrowest possible clearance
within the range not to get in touch with the magnet at the max. amplitude is advisable. Checkthe magnet clearance from time to time to keep a correct value of clearance.
Further, in the atmosphere where lots of powders exist, they will adhere in solid form to
the magnet resulting in reducing the clearance and may cause unusual noise.
Accordingly, inspect the magnet periodically and remove such fouling.
Movingiron core

Magnet clearance (mm)At
shipment

Max.

G50･1 (Half wave)

0.6

G63･2 (Half wave）

0.65(Method of adjustment)
Magnet① Remove the cover② Insert the clearance gauge with specified dimension on each main body (see the table
above) into the magnet clearance, and loose 3 hexagon socket head bolts locking themagnet, then adjust the clearance between the magnet and the moving iron core byadjusting 3 hexagon socket head set screws upward and downward.
③ Fasten magnet locking bolts (Hexagon socket head bolt: 3 pieces). Take care not tomisalign the setting position of ②.
④ Pull out the clearance gauge (Make sure that there is no misalignment in magnet
clearance)⑤ Fix the cover

CautionIf magnet clearance exceeding 1.2 times of max. value shown above is used, the magnet may
break. Check the clearance from time to time and maintain the correct value of clearance.

－ 10－

Magnet clearance

Type・
Drive system

(3) Change of power frequency
NTN bowl feeder is adjusted in conformance with power frequency in the region where it isused, or the set frequency of the controller. Accordingly, the machine does not vibrate correctly,
if the power frequency or the set frequency of the controller as the driving output frequency ischanged. To change the power frequency, follow the procedure given below.
(Note) In case that the driving output frequency is set by the frequency variable controller, thechange of set is not required even if the power frequency (50Hz⇔60Hz) is changed.

① Change of number of leaf springs
50Hz→60Hz : Increase the number of leaf springs by approx. 40%
60Hz→50Hz : Decrease the number of leaf springs by approx. 30%(Reference : How to check excess or deficiency of number of leaf springs)
To check if the number of leaf springs currently
provided with the machine is excess or deficiency forthe bowl and the attachment, follow the procedure
given below.
Loose slightly the leaf spring locking bolt only at one
place while vibrating it, and check the amplitude.

・Amplitude increased→Excess of number of springs
・Amplitude decreased→Deficiency of number of leaf
springs or be appropriate
If sufficient amplitude is provided, and it decreases when
the bolt is loosen, it is in the best condition.

② Changeover of the frequency in the controller
Conduct setting as shown on the table below. For further details, refer to the Instruction
Manual for each controller.
Power source
In the case of 50Hz
In the case of 60Hz
frequency
SW2
ON
SW2
OFF
SW3
OFF
SW3
ON
ON

ON

Setting of DIP switchby K-EGA57.

2 3

2 3

ON

ON

1 2 3 4 5 6 7 8

－ 11－

OFF

1 2 3 4 5 6 7 8OFF9. Troubleshooting
If a trouble should take place, check the following points.

(1) No vibration at all
In this case, conduct checking after dividing the trouble contents into those of the mechanicalsystem and the electric system. Turn ON the power switch and remove the cover, then bring ironpieces close to the magnet core as shown below.
① Strong suction in swing of all ironpieces by magnet :The lectric system is normal. This trouble isbecause of either one of wrong setting of thenumber of bowl feeder leaf springs or wrong
designation of the frequency.

Iron scaleor the like

② Not sucked at all :The trouble is because of the electric system including the controller and the magnet. But,
when the controller used is equipped with a sensor, a possible cause may be detection ofworks by the detecting head. This is not a failure. Align the optical axis and reconfirm theproximity distance and others.
Concerning the electric system, check the following points for sake of confirmation.
a) Correct connection of the power source (See “Wiring and operating methods” ofparagraph 7)b) Fusion of the controller fuse and working of the over current protective function.
c) Shorting of the controller external control signal input terminals. Closing of the terminals
according to external control signal (refer to the Controller Instruction Manual.)d) Magnets are all normal (When a-c are normal, conduct the suction test shown above oneach magnet)(2) Vibration is available but amplitude is insufficient① Improper power source (connection of 100V to 200V specifications)② Loosening of leaf spring mounting bolt
③ Loosening of locking bolt of bowl and others④ Excessively wide magnet clearance⑤ Omission of removal of fixtures used for transportation(3) Gradual decrease of amplitude during use① Set in fatigue of leaf spring② Loosening of leaf spring mounting bolt
③ Break or rusting of leaf spring④ Inclusion of iron powder and others in magnet clearance⑤ Loosening of bowl locking bolt(4) Unusual metallic noise① Excessively narrow magnet clearance, or inclusion of foreign matter② Excessive amplitude③ Interference of the cover with the vibrator④ Omission of removal of fixtures used for transportation
When the cause can not be located, inform us of the symptom as in detail as possible to facilitatequick establishment of countermeasures while referring to those described above.

－ 12－10. Specifications
Ｒ

Ｋ－Ｇ ５０ Ｌ １ Ｍ ４
Voltage/Drive system (4:200V Half wave)
Bowl mounting method
Design change code
Feeding direction (R: Clockwise, L: Counterclockwise)
Body size
Body type

Product No.

Bowl mounting method

Ｒ

Ｒ

Ｒ

K-G50 Ｌ1M4

K-G50 Ｌ1G4

K-G50Ｌ1T4

Basic type(without separation
bottom & adapter)

With bowl mounting
adapter

Separation bottom(With oil drain chute)

Source voltage (V)200

Consumption current(A)4.0Power consumption(VA)

800

Drive system

Half wave

Frequency (times/min.)

3000(50Hz), 3600(60Hz)

Leaf spring angle (θ°)

20°

Max. loading weight(Kg)(Work＋Bowl weight)

60

Magnet part No.
(Qty. used)

K-PMG-521-1

Cable size×length(from center)

Magnet：1.5ｍ㎡×1.15ｍ
Body：1.5ｍ㎡×1.35ｍ

Leaf spring assy.
(Number of places)
Number of leaf springs
for standard set
Leaf spring part No.
(Material)(2 p.c.s.)

45 p.c.s.×4 places=20 p.c.s.
K-PLS2-180×40（Steel）

Leaf spring dimension (mm)Length (Hole pitch)× Width×Plate thickness

215(180)×50×4

Strength grade of leaf
spring mounting bolt

12.9

Leaf spring tightening
torque400Ｎ･ｍ（4100ｋｇｆ･ｃｍ）

External paint color

Black／Silver

Weight (kg）

185

190

220

(Note) Refer to Catalog and the Instruction Manual of the controller for applicable controller tothis machine

－ 13－

Ｒ

Ｋ－Ｇ ６３ Ｌ ２ Ｍ ４
Voltage/Drive system (4:200V Half wave)
Bowl mounting method
Design change code
Feeding direction (R: Clockwise, L: Counterclockwise)
Body size
Body type

Ｒ

Ｒ

Ｒ

Product No.

K-G63 Ｌ2M4

K-G63 Ｌ2G4

K-G63Ｌ2T4

Bowl mounting method

Basic type(without separation
bottom & adapter)

With bowl mounting
adapter

Separation bottom(With oil drain chute)

Source voltage (V)200

Consumption current(A)10.0Power consumption(VA)

2000

Drive system

Half wave

Frequency (times/min.)

3000(50Hz), 3600(60Hz)

Leaf spring angle (θ°)）

20°

Max. loading weight(Kg)(Work＋Bowl weight)

75

Magnet part No.
(Qty. used)

K-PMG-521

Cable size×length(from center)

Magnet：2.5ｍ㎡×1.15ｍ
Body：2.5ｍ㎡×1.7ｍ

Leaf spring assy.
(Number of places)
Number of leaf springs
for standard set
Leaf spring part No.
(Material)(4 p.c.s.)44 p.c.s.×4 places=16 p.c.s.
K-PLS2-250×70（Steel）

Leaf spring dimension (mm)Length (Hole pitch) × Width
× Plate thickness

300(250)×50×7

Strength grade of leaf
spring mounting bolt―

Leaf spring tightening
torque490Ｎ･ｍ（5000Ｋｇｆ･ｃｍ）

External paint color

Black/Silver

Weight (kg）

360

370

400

(Note) Refer to Catalog and the Instruction Manual of the controller for applicable controller tothis machine－ 14－

【Memorandum】

Warranty for NTN Part Feeder
Shipment warranty is attached with this product. Please receive it without fail at the time ofpurchase. It is to assure you the product repair in free of charge according to the warranty
conditions stipulated on the warranty. You are required to store it carefully after reading
the content.

・ The content of this Instruction Manual is subject to change without prior notice due tofunctional improvement.

Published: Jan. 17, 2013

5th edition

NTN Corporation
Precision Equipment Division
1578 Higashi-Kaizuka, Iwata, Shizuoka 438-8510, Japan
PHONE: 81-538-37-8104, FAX: 81-538-37-8128

All rights reserved－ 15－©ＮＴＮ Corporation2013