NTN K-N25 Series User manual

No. PMPH002E-d
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INSTRUCTION
MANUAL
NTN Bowl Feeder
Type N25/N32/N40
Introduction
Thank you for your purchase of the NTN bowl feeder.
For correct operation of the NTN bowl 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 and
bowl for this machine.
Otherwise, specified performance of
the machine may not be obtained.
Introduction········································· 1
1. Before Use ···································· 1
2. Precaution for Safety···················2㹼3
3. Operating Principle·························· 4
4. Names of Main Component Parts······· 4
5. Dimensional Drawing···················5㹼7
6. Transportation and Installation··········· 8
7. Wiring and Operating Methods ····9㹼10
8. Inspection and Adjustment········ 10㹼13
9. Troubleshooting······················ 13㹼14
10. Specifications························· 15㹼18
Before use
Read this Instruction Manual
thoroughly, and operate the
machine correctly.
CONTENTS

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2. Precaution for Safety
This machine is designed and manufactured for parts feeding equipment based
on the concept of trouble-free operation and labor saving. However, the user is
also responsible for ensuring 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
part of the machine is electric equipment. Be sure to connect a
grounding wire.
Failure to do so may result in electric shock.
Never use the machine 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
operating environmental conditions.)
y
This machine is a heavy material. (See the specification in Section 10 for the mass.) In
transporting the machine, wear safety shoes, watch out for dropping, and take due care.
yFix the machine securely after installation.
y
Do not conduct the installation and assembly work with bare hands.
y
As for a bowl equipped with alignment mechanism, pay attention to sharp edges
and do
not touch with bare hands. 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 bowl, be sure to connect the grounding clip of welder to the
bowl
. If welding ground is insecure, the grounding wire connecting between
the body and
the controller may be burnt, resulting in electric shock or leakage.

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

For correct operation of the machine
[1] The NTN bowl feeder is a vibrating machine with a bowl equipped with the mechanism to align the
orientation of specified parts to thereby align and feed parts in bulk state to a specified point of place.
Do not use the machine for other purposes such as material tests and as equipment such as sieve.
[2] Operate the NTN bowl feeder in accordance with instructions given in this Instruction Manual and
the Manual enclosed in the same package. For technical specifications, see Section 10 “Specifications”.
[3] For operation of the machine, be sure to use an NTN controller and bowl. Further, be careful to
select a controller, bowl and power supply conforming to the machine.
[4] The resultant noise level varies with specifications of the machine and materials of parts to be fed. If
the noise level should be in excess of the tolerance limit, take countermeasures against the noise such
as fitting of a noise shielding cover.
(Note 1) Do not use the machine, when it is not in perfect condition (such as unusual noise, abnormal
vibration and omission of parts).
(Note 2) Where the bowl is equipped with the mechanism to align specified parts, any parts other than
the specified parts cannot be charged.
(Note 3) Operating environmental conditions
Operating ambient temperature
0 to 40qC
Operating ambient humidity
30 to 90% (No dew condensation is allowed.)
Operating altitude
1000 m max.
Storage temp. during transportation
–10 to 50qC
Atmosphere
at operating place
No splashing of water and chemicals is allowed.
No flammable gas and corrosive gas are permitted.
To be operated indoors.

User observance items
[1] Conduct all operations of the machine including run, maintenance and repair in accordance with
instructions given in this Instruction Manual and the Manual enclosed in the same package.
[2] Be fully careful to avoid such operations as to jeopardize the safety of the NTN bowl feeder. If a
sign of change liable to jeopardize the safety of the machine should be found, inform NTN to that
effect.
(Note) Ensure installation, operations, maintenance and repair of the NTN bowl feeder by
professional engineers. In addition, ensure that the machine is not operated by any person other
than those concerned.

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3. Operating Principle
NTN bowl feeder is designed to magnetically vibrate a bowl and a lower vibrator coupled to each other
with a leaf spring set at a certain angle of inclination. As a result of this rotary vibration, works are aslant in
the upward direction in the bowl to go forward little by little. The relationship between the bowl and the
leaf spring is so set that the vibration may be nearly resonant to the suction frequency of the vibration
magnet. Accordingly, a large vibration can be put forth with small exciting force.
4. Names of Main Component Parts
(Note) The actual structure may be different from the illustration shown above because of reasons such
as different shapes of bowl and controller and absence of the bowl internal aux. hopper.
Bowl internal aux. hopper
Bowl
Separation bottom
Controller
Upper vibrator
Magnet
Leaf spring
Lower vibrator
Base plate
Cushion rubber

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5. Dimensional Drawing
(1) Circular base specifications <basic type>
K-N25R
LM1 2K-N32R L2M2 4K-N40R LM2 4
K-N40R
L1M4
Unit: mm
N25
N32
N40
N40·1
D1
298
386
452
472
D2
165
230
300
300
D3
336
410
490
490
H1
245
250
260
310
A
220
266
325
325
B
(45)
(47)
(43)
(43)
(2) Free set base specifications <basic type>
K-N25R
LAM1 2K-N32R LAM2 4
Unit: mm
N25·A
N32·A
N40·A
D1
298
386
452
D2
165
230
300
D3
336
450
530
H1
256r15
286r20
272+40
0
A
315
420
500
B
45r15
64r20
(45+40
0 )
C
37.5
45
48
D
M10 u80
M16 u100
E
K-P0800
K-P0801
8-M6 tap u15
6-M8 tap u15
12-M6 tap u15
Bowl mounting surface
Bowl mounting surface
4-M10 tap through
Spot facing:
I
15, depth: 10
Controller
Base plate dimensional drawing (top view)
Hex bolt
Hex. bolt
Detail
“A”
Bowl mounting surface
6-M8 tap u15
3-hex. bolt M10
8-M6 tap u15
3-hex. bolt M10
12-M6 tap u15
3-hex. bolt M10
K-N40R
LAM2 4
Free set base dimensional drawing (top view)