JUKI MF-7900 Series User manual

MF-7900 Series
High-speed, Cylinder-bed, Top & Bottom Coverstitch Machine
MF-7900D Series
Semi-dry-head, Cylinder-bed, Top & Bottom Coverstitch Machine
MF-7923D-U11-B56

In the case of looper thread breakage,
the looper thread twining prevention
mechanism is activated to trim the
looper thread before the thread twines
on the looper thread cam. In this way,
the looper thread twining prevention
mechanism prevents the looper
thread from twining on the looper thread cam. In addition, the looper
thread cam, which has been incorporated in the sewing machine, has
been changed so that it is mounted outside of the sewing machine. The
externally-mounted looper thread cam promises improved maintainability.
As a result of the commonality of components, commercially-available
components (presser foot, throat plate and needle clamp) are now
applicable and easily obtainable.
Seam quality is improved!!
Simplified maintenance mechanism
All of the sewing machines with
a thread trimmer are provided
with a direct-drive motor.
The direct-drive motor system has been
adopted by all of the sewing machines with
a thread trimmer. As a result, the sewing
machine starts up swiftly and promises
increased stop accuracy, thereby
demonstrating improved responsiveness.
In addition, the machine is no longer
provided with a V-belt. This means that the
adoption of the direct-drive motor is also
effective in the elimination of belt shavings. Power is directly transmitted
from the motor to the sewing machine, thereby contributing to reduced
power consumption. (This sewing machine reduces power consumption
by 27% as compared with the conventional models.)
MF7823/UT22/SC510
MF-7923/UT57/SC921/CP18
Servomotor
Direct-drive motor
Commercially-available gauge components
are applicable with no additional work.
The looper thread twining prevention mechanism has been
improved and is provided as standard for the sewing machine.
The
world's
first
27%
Power
consumption
Reduced by
Main
feed dog
Differential
feed dog
The feed locus can be adjusted externally. The
feed locus is now adjustable in terms of the
vertical direction and horizontal direction, thereby
improving responsiveness to sewing materials.
Thanks to the new feed mechanism,
many different types of sewing are achieved.
Elastic material or delicate material can be
sewn with the presser foot kept slightly raised.
This effectively helps reduce the degree of
slippage, warpage and damage of the material.
Micro-lifter mechanism
It is possible to finely adjust
the differential feed amount
to a best-suited value for the
material to be used.
The differential feed ratio is
constant even if the stitch
length is changed.
Differential-feed micro-adjustment
mechanism
It is provided with many different sewing-related mechanisms which contribute to
improved seam quality, such as the new feed mechanism, and differential-feed
micro-adjustment mechanism. In addition, the machine is provided as standard with
a looper thread twining prevention mechanism for improved maintenance.
The MF-7900 Series is a newly developed
coverstitch machine provided with lots of
mechanisms for improving the seam quality.
MF-7900
Series
High-speed, Cylinder-bed,
Top & Bottom Coverstitch Machine
MF-7900/UT
Series
Direct-drive, High-speed, Cylinder-bed,
Top & Bottom Coverstitch Machine with Needle- and Looper- Thread Trimmer
MF-7900D
Series
Semi-dry-head, Cylinder-bed,
Top & Bottom Coverstitch Machine
MF-7900D/UT
Series
Semi-dry-head, Direct-drive, Cylinder-bed,
Top & Bottom Coverstitch Machine with Needle- and Looper- Thread Trimmer
Horizontal
direction
Vertical
direction
Expand
Contract
The
world's
first

JUKI's dry-head technology
protects sewing products from being stained with oil.
With the excellent functions inherited from the MF-7900 Series, the MF-7900D is provided with a dry frame
mechanism to eliminate the cause of oil stains. Stain removing work or re-sewing work is substantially reduced
by protecting sewing products from being stained with oil, thereby improving the quality of finished products.
The frame no longer requires oiling.
Dry-head technology has materialized
a frame which does not need oiling.
Environmental consciousness
Dichlorofluoroethane (HCFC-141), which is
generally used in oil stain cleaning fluid, is included
in those chemicals which need to be reduced, as it
is a substances that can harm the ozone layer.
Since oil stains on sewing products are reduced, the quantity
of the use of stain remover generally used in sewing plants
can be reduced.
The needle bar mechanism and spreader mechanism have been applied with a
special surface treatment.
JUKI's unique special grease is used for lubrication. Grease-filled bearings have
been adopted for the crank rod. These allow the machine's frame mechanism to
demonstrate outstanding durability without being oiled.
Unlike the conventional models, the oiling mechanism inside the frame has been eliminated.
As a result, oil does not leak from the needle bar, presser bar or spreader shaft.
The semi-dry
head sewing machine
increases its sewing
speed to
5,000
sti/min
Application Seam Model No.
Number
of
needles
Number
of
threads
Needle
gauge
(mm)
Stitch
length *1
(mm)
Differentialfeed
ratio *2
Presser foot
lifting amount *3
(mm)
Max. sewing
speed
(sti/min)*4
Binder mounting base
Various binders can be
installed by loading the
binder mounting base
supplied with the unit.
List of subclass machines
MF-7900/U11
Universal type
(basic type)
By changing over the needle bar stroke, penetrating force of
the needle as well as thread tension to fit heavy-weight
materials (fleece, blankets) can be obtained. The needle bar
stroke can be changed by adjusting the eccentric pin.
(Changing of parts is not required. Factory-set at the time of
delivery: 31mm; for sewing heavy-weight materials: 33mm)
Needle bar stroke conversion mechanism
head type sewing
machine has been
added.
A semi-dry
Universal type
(basic type)
U11
The machine can be used for the hemming process of the sleeves and bottoms of T-shirts and for
the covering process for sportswear and knitwear.
The front cover is trimmed to allow operators to bring their hands closer near the needle entry area,
thereby increasing work efficiency in the covering process, etc.
MF-7923-U11-B56/UT51
Polo
shirts
T-shirts knitwear sportswear
6,500
6,000
5,000
5,000
6,000
2 4
0.9~3.6 1:0.9~1:1.8
(1:0.6~1:1.1) 5 (8)
3.2,4.0,4.8
MF-7922-U11-B＊＊
3 5 5.6,6.4
MF-7923-U11-B＊＊
2 4 4.8
MF-7922-U11-B48/UT51
3 5 5.6,6.4
MF-7923-U11-B＊＊ /PL12,PL13
MF-7923-U11-B＊＊ /UT52/PL12
MF-7923-U11-B＊＊ /UT57/PL13
MF-7923-U11-B＊＊ /UT51,UT57
MF-7923-U11-B＊＊ /UT59
*1 Stitch length can be adjusted to 4.5mm at the maximum. *2 Differential ratio can be switched by adjustment.
*3 The lift of the presser foot is 5mm for the top and bottom coverstitch machine, and 8mm for the bottom coverstitch machine. *4 "sti/min" stands for "Stitches per Minute."
5,000
2 4
0.9~3.6 1:0.9~1:1.8
(1:0.6~1:1.1) 5 (8)
4.0
3 5 5.6,6.4
MF-7922D-U11-B40
MF-7923D-U11-B＊＊
MF-7923D-U11-B＊＊ /UT51,UT57
MF-7923D-U11-B＊＊ /UT59
MF-7900D/U11
Universal type
(basic type)

Application Seam Model No.
Number
of
needles
Number
of
threads
Needle
gauge
(mm)
Stitch
length *1
(mm)
Differentialfeed
ratio *2
Presser foot
lifting amount *3
(mm)
Max. sewing
speed
(sti/min)*4
List of subclass machines
For elastic band welting
H11 with PL
This model is best suited to elastic-band welting for swimwear, briefs, etc. It welts the elastic
band which has been overlocked on the garment body.
H22,H23
This model is best suited to hemming processes for sleeves and the bottoms of T-shirts, Polo
shirts, etc. It comes with a left hand fabric trimmer for trimming fabric in parallel, at all times,
to the seam with consistency. The upper knife stroke can be adjusted with ease.
*1 Stitch length can be adjusted to 4.5mm at the maximum. *2 Differential ratio can be switched by adjustment.
*3 The numeric value indicates the lifting amount of the presser foot for top and bottom coverstitch. The numeric value given in parentheses indicates the lifting amount of the presser foot for bottom coverstitch.
*4 "sti/min" stands for "Stitches per Minute."
MF-7900/H11
Elastic band welting 5,0000.9~3.6 1:0.9~1:1.8
(1:0.6~1:1.1) 5 (8)35 5.6,6.4
MF-7923-H11-B＊＊ /PL12
MF-7923-H11-B＊＊ /PL13
MF-7923-H11-B＊＊ /UT52,UT57/PL12
MF-7923-H11-B＊＊ /UT57/PL13
For hemming
(with left hand fabric trimmer)
MF-7923D-H23-B56/UT57
Polo
shirts
T-shirts
★:The world's
fastest
sewing machine
with left hand
fabric trimmer
Application Seam Model No.
Number
of
needles
Number
of
threads
Needle
gauge
(mm)
Stitch
length *1
(mm)
Differentialfeed
ratio *2
Presser foot
lifting amount *3
(mm)
Max. sewing
speed
(sti/min)*4
List of subclass machines
*1 Stitch length can be adjusted to 4.5mm at the maximum. *2 Differential ratio can be switched by adjustment.
*3 The lift of the presser foot is 5mm for the top and bottom coverstitch machine, and 8mm for the bottom coverstitch machine. *4 "sti/min" stands for "Stitches per Minute."
H11
MF-7923-H11-B56/PL13
Swimwear Briefs
MF-7922-H22, H23-B＊＊
MF-7922-H22, H23-B48/MC40
MF-7923-H22, H23-B＊＊
MF-7923-H22, H23-B＊＊ /MC40
MF-7923-H22, H23-B＊＊ /UT51, UT57
MF-7923-H22, H23-B＊＊ /UT57/MC37
MF-7923-H22, H23-B＊＊ /UT59/MC37
MF-7922-H22, H23-B48/UT51, UT57
MF-7922-H22, H23-B48/UT57/MC37
MF-7922-H23-D40/UT59/MC37
2 4
3 5
2 4
3 5
5.6,6.4
4.8
5.6,6.4
MF-7923D-H22, H23-B56
MF-7923D-H22, H23-B56/MC40
MF-7922D-H22, H23-B48/UT57/MC37
MF-7922D-H23-D40/UT59/MC37
MF-7923D-H22, H23-B＊＊ -UT51, UT57
MF-7923D-H22, H23-B＊＊ -UT57/MC37
3 5
2 4
5.6,6.4
3 5 5.6,6.4
4.0,4.8
4.8
4.8
4.0
4.0
0.9~3.6
0.9~3.6
5 (8)
5 (8)
6,000★
6,000★
0.9~3.6
1:0.9~1:1.8
(1:0.6~1:1.1)
1:0.9~1:1.8
(1:0.6~1:1.1)
5,0005 (8)
1:0.9~1:1.8
(1:0.6~1:1.1)
For hemming
(with left hand fabric
trimmer)
MF-7900D/
H22,23
For hemming
(with left hand fabric
trimmer)
MF-7900/
H22,23

E11
This model is best suited to endless flat elastic band sewing processes for briefs, boxer briefs,
etc. The right hand fabric trimmer trims the fabric, even at a multi-layered joined part, to
produce a beautiful finish with the seam and fabric edge aligned with consistency. Cloth cutting
knife can be detached with one touch operation in case of sewing without using the knife.
For elastic band attaching
(with right hand fabric trimmer and tension roller)
MF-7913-E11-B56/PL12/MC37
E22
For endless spandex elastic
band attaching
(with manual binder and tension roller)
E23
For endless spandex elastic
band attaching
(with air binder and tension roller)
5,0000.9~3.6 1:0.9~1:1.8
(1:0.6~1:1.1) 6 (7)3 5 5.6,6.4
MF-7923-E22-B＊＊ /PL13
MF-7923-E23-B＊＊ /PL13
MF-7923-E22-B＊＊ /UT52/PL13
MF-7923-E23-B＊＊ /UT57/PL13
*1 Stitch length can be adjusted to 4.5mm at the maximum. *2 Differential ratio can be switched by adjustment.
*3 The numeric value indicates the lifting amount of the presser foot for top and bottom coverstitch. The numeric value given in parentheses indicates the lifting amount of the presser foot for bottom coverstitch.
*4 "sti/min" stands for "Stitches per Minute."
MF-7923-E22-B56/PL13 MF-7923-E23-B56/PL13
Boxer
briefs
Briefs
Briefs
5,000
2 4
0.9~3.6 1:0.9~1:1.8
(1:0.6~1:1.1) 5 (7)
5,0000.9~3.6 1:0.9~1:1.8
(1:0.6~1:1.1) 5 (7)
MF-7900/E11
Elastic band attaching
(with right hand fabric
trimmer)
MF-7900D/E11
Elastic band attaching
(with right hand fabric
trimmer)
4.0
5.6,6.4
3
55.6,6.4
45.6
3 4 5.6
*1 Stitch length can be adjusted to 4.5mm at the maximum. *2 Differential ratio can be switched by adjustment.
*3 The numeric value indicates the lifting amount of the presser foot for top and bottom coverstitch. The numeric value given in parentheses indicates the lifting amount of the presser foot for bottom coverstitch.
*4 "sti/min" stands for "Stitches per Minute."
Application Seam Model No.
Number
of
needles
Number
of
threads
Needle
gauge
(mm)
Stitch
length *1
(mm)
Differentialfeed
ratio *2
Presser foot
lifting amount *3
(mm)
Max. sewing
speed
(sti/min)*4
List of subclass machines
Application Seam Model No.
Number
of
needles
Number
of
threads
Needle
gauge
(mm)
Stitch
length *1
(mm)
Differentialfeed
ratio *2
Presser foot
lifting amount *3
(mm)
Max. sewing
speed
(sti/min)*4
List of subclass machines
This model is best suited for sewing elastic bands on briefs.
E22 is opened / closed with the knee lever and E23 is opened
/ closed with the knee switch. The machine comes provided
as standard with a tension roller to smoothly sew elastic bands
on different-sized garment bodies. The machine flexibly
adapts to varying elasticities due to its soft seams.
MF-7922-E11-B40/PL12/MC40
MF-7923-E11-B＊＊ /PL12/MC40
MF-7923-E11-B＊＊ /PL13/MC40
MF-7913D-E11-B56/UT56/PL13/MC37
MF-7913-E11-B56/UT55,UT56/PL12/MC37
MF-7913-E11-B56/UT55/PL13/MC37
MF-7913-E11-B＊＊ /UT56/PL13/MC37
MF 7913 E11 B56/PL12
/M
For endless spandex
elastic band attaching
MF-7900/
E22,23

Device
UT51
Electromagnetic needle thread /
looper thread trimming device / Auto-lifter
It is an electromagnetic needle
thread / looper thread trimming
device / Auto-lifter. The machine
does not need an air compressor to
achieve easy layout changing.
It is an electromagnetic needle
thread / looper thread trimming
device / Auto-lifter with cloth puller.
UT52
Electromagnetic needle thread /
looper thread trimming device / Auto-lifter
Pneumatic type bottom
thread trimming device
Air blow type wiper
UT55
Pneumatic type bottom
thread trimming device
+ Electromagnetic type wiper
/ Auto-lifter
This is a pneumatic type bottom
thread trimming device / auto-lifter. It
is used for processes which do not
need top covering.
UT56
Pneumatic type bottom
thread trimming device
+ Air blow type wiper
/ Auto-lifter
This is a pneumatic type bottom
thread trimming device / auto-lifter. It
pneumatically handles the needle
thread (i.e, places the needle thread
above the presser foot) instead of
the mechanical wiper.
PL12
Cloth puller : Gear type
This is a gear type cloth puller. It helps
feed difficult-to-feed materials to assist
smooth sewing.
(Example: Attaching flat elastic bands)
PL13
Cloth puller : Flat type
This is a flat type cloth puller. It helps
feed soft material which requires a
higher feeding force to assist sewing.
(Example: Hemming)
UT59
Pneumatic type top and bottom thread trimming
device with thread-fray-prevention function
MC37 • MC40
Pneumatic cloth chip suction device
MC37 (solenoid valve type) : Part No.40023706,
MC40 (mechanical valve type) : Part No.40023707
SS11
Short stitch device : Part No.70004376
The needle thread tightening
mechanism helps produce
well-tensed seams even when the
machine performs short stitching.
The short stitch pitch can be
adjusted with ease.
This is a device for preventing the thread from coming undone at the end of
sewing. The device is able to sew condensation stitches by the number
specified as desired. It prevents the needle thread from being poorly tensed,
which is likely to occur in cases where the amount of condensation is
reduced.
Electromagnetic needle thread /
looper thread trimming device
Electromagnetic needle thread /
looper thread trimming device
It is the state-of-the-art function to make the thread-fray-prevention at the end
of sewing more reliable.
1
1
2
2
2
1
Presser lifter drive mechanism magnet
Thread trimmer drive mechanism magnet
1
2
Presser lifter drive mechanism magnet
Thread trimmer drive mechanism magnet
1
2
It is a pneumatic type needle thread /
looper thread trimming device /
Auto-lifter. Since the automatic lift of
the presser foot and automatic thread
trimming can be activated by lightly
depressing the pedal, work efficiency
is dramatically increased. The air
blow type wiper is supplied with the
sewing machine as an accessory.
UT57
Pneumatic type needle thread /
looper thread trimming device
Presser lifter drive mechanism air cylinder
Thread trimmer drive mechanism air cylinder
1
2
Pneumatic type needle thread /
looper thread trimming device / Auto-lifter
UT59 cannot be attached to the machine as a device.
Please order with the machine head.

MF79 B /
MF79 BD/
MF79 D / /
/ /
MF79 B
*Refer to the subclass
models list for the
needle gauge of the
respective models.
Stitch type Code
2-needle, top and bottom coverstitch 22
3-needle, top and bottom coverstitch 23
Tongue shape of throat plate Code
B type B
Needle gauge Code
3.2mm 32
4.0mm 40
4.8mm 48
5.6mm 56
6.4mm 64
Stitch type Code
2-needle, top and bottom coverstitch 22
3-needle, top and bottom coverstitch 23
Tongue shape of throat plate Code
B type B
Needle gauge Code
4.0mm 40
5.6mm 56
6.4mm 64
Stitch type Code
2-needle, top and bottom coverstitch 22
3-needle, bottom coverstitch 13
3-needle, top and bottom coverstitch 23
Tongue shape of throat plate Code
B type B
Needle gauge Code
4.8mm 48
5.6mm 56
6.4mm 64
*Refer to the subclass
models list for the
needle gauge of the
respective models.
*Refer to the subclass
models list for the
needle gauge of the
respective models.
Stitch type Code
2-needle, top and bottom coverstitch 22
3-needle, bottom coverstitch 13
3-needle, top and bottom coverstitch 23
Tongue shape of throat plate Code
B type B
D type D
Needle gauge Code
4.8mm 48
4.0mm 40
5.6mm 56
6.4mm 64
*Refer to the subclass
models list for the
needle gauge of the
respective models.
Application Code
Universal type U11
For elastic band attaching E11
For wider hemming H11
For endless spandex elastic band attaching
(with manual binder and tension roller) E22
Hemming (with left hand fabric trimmer,
for medium-weight materials) H23
Hemming (with left hand fabric trimmer,
for light-weight materials) H22
For endless spandex elastic band attaching
(with air binder and tension roller) E23
Application Code
Universal type U11
For elastic band attaching E11
For wider hemming H11
For endless spandex elastic band attaching
(with manual binder and tension roller) E22
Hemming (with left hand fabric trimmer, for medium-weight materials) H23
Hemming (with left hand fabric trimmer, for light-weight materials) H22
For endless spandex elastic band attaching
(with air binder and tension roller) E23
Device and attachment
Not provided
Pneumatic cloth chip suction device
(mechanical valve type)
Code
MC40
Cloth puller: Gear type PL12
Cloth puller: Flat type PL13
Application Code
Universal type U11
Hemming (with left hand fabric trimmer, for medium-weight materials) H23
Hemming (with left hand fabric trimmer, for light-weight materials) H22
Device and attachment
Not provided
Pneumatic cloth chip suction device
(mechanical valve type)
Code
MC40
Thread trimming device
Electromagnetic type top and bottom thread trimming device
Code
UT51
Electromagnetic type top and bottom thread trimming device UT52
Pneumatic type bottom thread trimming device
+ Electromagnetic type wiper UT55
Pneumatic type bottom thread trimming device
+ Air blow type wiper UT56
Pneumatic type top and bottom thread trimming device UT57
Pneumatic type top and bottom thread trimming device
with thread-fray-prevention function UT59
Pneumatic cloth chip suction device (electromagnetic valve type) MC37
Cloth puller: Gear type PL12
Cloth puller: Flat type PL13
Thread trimming device
Electromagnetic type top and bottom thread trimming device
Code
UT51
Pneumatic type bottom thread trimming device
+ Air blow type wiper UT56
Pneumatic type top and bottom thread trimming device UT57
Pneumatic type top and bottom thread trimming device
with thread-fray-prevention function UT59
Pneumatic cloth chip suction device (electromagnetic valve type) MC37
Cloth puller: Flat type PL13
Application Code
Universal type U11
For elastic band attaching E11
Hemming (with left hand fabric trimmer,
for medium-weight materials) H23
Hemming (with left hand fabric trimmer,
for light-weight materials) H22
MF-7900D (Semi-dry-head)
WHEN YOU PLACE ORDERS
Please note when placing orders, that the model name should be written as follows:
MF-7900
Without automatic thread trimmer
With automatic thread trimmer (Direct-drive motor)
Without automatic thread trimmer
With automatic thread trimmer (Direct-drive motor)
SC-921B
CP-18B
Control box
Operation panel
SC-921B
CP-18B
Control box
Operation panel

SEPTEMBER, 2013 Printed in Japan(C)
SEWING MACHINERY BUSINESS UNIT
2-11-1, TSURUMAKI, TAMA-SHI,
TOKYO 206-8551, JAPAN
PHONE : [phone]
FAX : [phone]
http://www.juki.com
✽ Specifications and appearance are subject to change without prior notice for improvement.
✽ Read the instruction manual before putting the machine into service to ensure safety.
✽ This catalogue prints with environment-friendly soyink on recycle paper.
JUKI ECO PRODUCTS The MF-7923U11B56/UT57 is an eco-friendly product which complies with
JUKI ECO PRODUCTS standards for protecting the environment.
This sewing machine reduces power consumption by 27% as compared with the conventional models.
The sewing machine complies with the "Juki Group Green Procurement Guidelines" on the use of hazardous substances,
which is stricter than other restrictions, such as those of the RoHS Directive.
For details of JUKI ECO PRODUCTS, refer to : http://www.juki.co.jp/eco_e/index.html
The RoHS Directive is an EU Directive limiting the use of 6 hazardous substances (lead, hexavalent chromium, mercury, cadmium, PBB and PBDE) in electrical and electronic equipment.
The Juki Green Procurement Guideline is the voluntarily established criteria to eliminate not only the aforementioned six substances, but also other ones which also adversely affect the environment.
Juki Corporation operates an environmental management system
to promote and conduct the following as the company engages in
the research, development, design, sales, distribution,and
maintenance of industrial sewing machines, household sewing
machines, industrial robots, etc., and in the provision of sales and
maintenance services for data entry systems:
(1) The development of products and engineering processes
that are safe to the environment
(2) Green procurement and green purchasing
(3)
Energy conservation (reduction in carbon-dioxide emissions)
(4) Resource saving (reduction of papers purchased, etc.)
(5) Reduction and recycling of waste
(6) Improvement of logistics efficiency (modal shift and
improvement of packaging, packing, etc.)
Model name MF-7900 series MF-7900D series
SPECIFICATIONS (U11, H11, H22, H23, E11, E22, E23)
Compressedair / Air consumption (with automatic thread trimmer)
※"H11" excepts MF-7900D Series.
Device
UT57, UT59
UT56
UT55
Bottom
thread trimmer
Auto-lifter
―
―
―
―
●
●
●
Top and bottom
thread trimmer
Auto-lifter
●
●
●
●
―
―
―
Air blow type
wiper
―
●
―
●
●
●
―
MC37
MC40
―
―
●
●
―
●
●
Air consumption
dm3/min (ANR)
0.7
182
456
637
182
637
456
Compressed air
MPa
0.5
0.5
0.5
41kg (without device), 49kg (with UT51), 51kg (with PL/UT52), 44kg (with UT57)
43kg (without device), 51kg (with UT52), 46kg (with UT57)
43kg (without device), 51kg (with UT52), 46kg (with UT57)
44kg (without device), 48kg (with UT55), 47kg (with UT56)
42kg (without device), 50kg (with UT51), 45kg (with UT57)
U11
H11 (with PL) ※
E22, E23 (with PL)
E11 (with PL)
H22, H23
Weight of the
machine head
Needle
Lift of the presser foot
Lubrication
Lubricating oil
Feed dog inclination adjustment
Micro-lifter
Needle gauge (mm)
Stitch pitch adjustment
Differential feed adjustment
Silicon oil tank for needle tip
and needle thread
Cartridge oil filter
Needle bar stroke
converting function
Power requirement /
Power consumption
UY128GAS (#10S) #9~#12S
JUKI Machine Oil 18 (equivalent to ISO VG18)
Provided as standard
Provided as standard
3.2, 4.0, 4.8, 5.6, 6.4
By dial
By micro-adjustment mechanism
U11, H11, H22, H23, E11 : Provided as standard: 31mm: at the time of delivery /
When sewing a heavy-weight material: 33mm ※
Provided as standard
Provided as standard
Single-phase 100~120V / 200~240V,
3-phase 200~240V / 500VA (with automatic thread trimmer)
5mm (with top and bottom covering stitch),
8mm (with bottom covering stitch)
Stitch type
Automatiac
2-needle/3-needle top
and bottom covering stitch
E22, E23 : Provided as standard: 33mm:
at the time of delivery /
When sewing a heavy-weight material: 35mm
Automatic (frame: no lubrication)
2-needle/3-needle top
and bottom covering stitch
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