JUKI MF-7900 Series, MF-7900D Series Specification
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Juki MF-7900D Series offers a range of features for improved seam quality and efficiency. Its new feed mechanism allows for precise adjustments, while the differential-feed micro-adjustment mechanism ensures reduced slippage and material damage. The semi-dry-head technology eliminates oil stains on sewing products, reducing the need for stain removal and improving finished product quality. The machine's direct-drive motor provides increased stop accuracy and reduced power consumption.
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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
The MF-7900 Series is a newly developed coverstitch machine provided with lots of mechanisms for improving the seam quality.
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.
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
Seam quality is improved !!
Thanks to the new feed mechanism, many different types of sewing are achieved.
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.
The world's first
Micro-lifter mechanism
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.
Differential-feed micro-adjustment 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
Main feed dog length is changed.
Differential feed dog
Expand
Vertical direction
Horizontal direction
Contract
Simplified maintenance mechanism
The looper thread twining prevention mechanism has been improved and is provided as standard for the sewing machine.
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
The world's first 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.
Commercially-available gauge components are applicable with no additional work.
As a result of the commonality of components, commercially-available components (presser foot, throat plate and needle clamp) are now applicable and easily obtainable.
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.)
Servomotor
MF7823/UT22/SC510
Direct-drive motor
MF-7923/UT57/SC921/CP18
Power consumption
Reduced by
27%
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.
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.
Dry-head technology has materialized a frame which does not need oiling.
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.
Environmental consciousness
Since oil stains on sewing products are reduced, the quantity of the use of stain remover generally used in sewing plants can be reduced.
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.
The semi-dry head sewing machine increases its sewing speed to
5,000 sti/min
A semi-dry head type sewing machine has been added.
Needle bar stroke conversion mechanism
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)
U11
Universal type
(basic type)
T-shirts
Polo shirts knitwear sportswear
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.
Binder mounting base
Various binders can be installed by loading the binder mounting base supplied with the unit.
MF-7923-U11-B56/UT51
List of subclass machines
Application Seam Model No.
Number of needles
2
Number of threads
4
Needle gauge
(mm)
3.2,4.0,4.8
Stitch length *
(mm)
1 Differentialfeed ratio * 2
MF-7900/U11
Universal type
(basic type)
MF-7922-U11-B **
MF-7923-U11-B **
MF-7923-U11-B ** /PL12,PL13
MF-7922-U11-B48/UT51
MF-7923-U11-B ** /UT51,UT57
MF-7923-U11-B ** /UT59
MF-7923-U11-B ** /UT52/PL12
MF-7923-U11-B ** /UT57/PL13
3
2
3
5
4
5
5.6,6.4
4.8
5.6,6.4
0.9~3.6
1:0.9~1:1.8
(1:0.6~1:1.1)
MF-7900D/U11
Universal type
(basic type)
MF-7922D-U11-B40
MF-7923D-U11-B **
MF-7923D-U11-B ** /UT51,UT57
MF-7923D-U11-B ** /UT59
2
3
4
5
4.0
5.6,6.4
0.9~3.6
*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."
1:0.9~1:1.8
(1:0.6~1:1.1)
Presser foot lifting amount *
(mm)
3
5 (8)
5 (8)
Max. sewing speed
(sti/min)* 4
6,500
5,000
6,000
6,000
5,000
5,000
H11
For elastic band welting
H11 with PL
Swimwear Briefs
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.
List of subclass machines
MF-7923-H11-B56/PL13
Application Seam Model No.
Number of needles
Number of threads
Needle gauge
(mm)
Stitch length *
(mm)
1 Differentialfeed ratio * 2
Presser foot lifting amount *
(mm)
3
Max. sewing speed
(sti/min)* 4
MF-7900/H11
Elastic band welting
MF-7923-H11-B ** /PL12
MF-7923-H11-B ** /PL13
MF-7923-H11-B ** /UT52,UT57/PL12
MF-7923-H11-B ** /UT57/PL13
3 5 5.6,6.4
0.9~3.6
1:0.9~1:1.8
(1:0.6~1:1.1)
5 (8)
*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."
5,000
H22,H23
For hemming
(with left hand fabric trimmer)
T-shirts
Polo shirts
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.
List of subclass machines
MF-7923D-H23-B56/UT57
★ :The world's fastest sewing machine with left hand fabric trimmer
Application Seam Model No.
MF-7900/
H22,23
For hemming
(with left hand fabric trimmer)
MF-7922-H22, H23-B **
MF-7922-H22, H23-B48/MC40
MF-7923-H22, H23-B **
MF-7923-H22, H23-B ** /MC40
MF-7922-H22, H23-B48/UT51, UT57
MF-7922-H22, H23-B48/UT57/MC37
MF-7922-H23-D40/UT59/MC37
MF-7923-H22, H23-B ** /UT51, UT57
MF-7923-H22, H23-B ** /UT57/MC37
MF-7923-H22, H23-B ** /UT59/MC37
Number of needles
2
3
2
3
Number of threads
4
5
4
5
Needle gauge
(mm)
4.0,4.8
4.8
5.6,6.4
4.8
4.0
5.6,6.4
Stitch length *
(mm)
1
0.9~3.6
0.9~3.6
Differentialfeed ratio * 2
1:0.9~1:1.8
(1:0.6~1:1.1)
1:0.9~1:1.8
(1:0.6~1:1.1)
MF-7900D/
H22,23
For hemming
(with left hand fabric trimmer)
MF-7923D-H22, H23-B56
MF-7923D-H22, H23-B56/MC40
MF-7922D-H22, H23-B48/UT57/MC37
MF-7922D-H23-D40/UT59/MC37
3
2
5
4
5.6,6.4
4.8
4.0
0.9~3.6
MF-7923D-H22, H23-B ** -UT51, UT57
MF-7923D-H22, H23-B ** -UT57/MC37
3 5 5.6,6.4
*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."
1:0.9~1:1.8
(1:0.6~1:1.1)
Presser foot lifting amount *
(mm)
3
5 (8)
5 (8)
5 (8)
Max. sewing speed
(sti/min)* 4
6,000
★
6,000
★
5,000
E11
For elastic band attaching
(with right hand fabric trimmer and tension roller)
Briefs
Boxer briefs
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.
List of subclass machines
Application
MF-7900/E11
Elastic band attaching
(with right hand fabric trimmer)
Seam Model No.
MF-7922-E11-B40/PL12/MC40
MF-7923-E11-B ** /PL12/MC40
MF-7923-E11-B ** /PL13/MC40
MF-7913-E11-B56/UT55,UT56/PL12/MC37
MF-7913-E11-B56/UT55/PL13/MC37
MF-7913-E11-B ** /UT56/PL13/MC37
Number of needles
2
3
Number of threads
4
5
4
Needle gauge
(mm)
4.0
5.6,6.4
Stitch length *
(mm)
1
0.9~3.6
Differentialfeed ratio * 2
Presser foot lifting amount *
(mm)
3
1:0.9~1:1.8
(1:0.6~1:1.1)
5 (7)
5.6
5.6,6.4
MF-7900D/E11
Elastic band attaching
(with right hand fabric trimmer)
MF-7913D-E11-B56/UT56/PL13/MC37 3 4 5.6
0.9~3.6
1:0.9~1:1.8
(1:0.6~1:1.1)
5 (7)
*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."
Max. sewing speed
(sti/min)* 4
5,000
5,000
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)
Briefs
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-7923-E22-B56/PL13
List of subclass machines
MF-7923-E23-B56/PL13
Application Seam Model No.
Number of needles
Number of threads
Needle gauge
(mm)
Stitch length *
(mm)
1 Differentialfeed ratio * 2
Presser foot lifting amount *
(mm)
3
MF-7900/
E22,23
For endless spandex elastic band attaching
MF-7923-E22-B ** /PL13
MF-7923-E23-B ** /PL13
MF-7923-E22-B ** /UT52/PL13
MF-7923-E23-B ** /UT57/PL13
3 5 5.6,6.4
0.9~3.6
1:0.9~1:1.8
(1:0.6~1:1.1)
6 (7)
*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."
Max. sewing speed
(sti/min)* 4
5,000
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.
1
UT52
Electromagnetic needle thread / looper thread trimming device / Auto-lifter
It is an electromagnetic needle thread / looper thread trimming device / Auto-lifter with cloth puller.
1
2
2
Electromagnetic needle thread / looper thread trimming device
1
2
Presser lifter drive mechanism magnet
Thread trimmer drive mechanism magnet
UT57
Pneumatic type needle thread / looper thread trimming device / Auto-lifter
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.
1
2
Electromagnetic needle thread / looper thread trimming device
1
2
Presser lifter drive mechanism magnet
Thread trimmer drive mechanism magnet
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.
Pneumatic type needle thread / looper thread trimming device
1
2
Presser lifter drive mechanism air cylinder
Thread trimmer drive mechanism air cylinder
UT59 UT59 cannot be attached to the machine as a device.
Please order with the machine head.
Pneumatic type top and bottom thread trimming device with thread-fray-prevention function
It is the state-of-the-art function to make the thread-fray-prevention at the end of sewing more reliable.
SS11
Short stitch device : Part No.70004376
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.
Air blow type wiper Pneumatic type bottom thread trimming device
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)
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.
MC37
•
MC40
Pneumatic cloth chip suction device
MC37 (solenoid valve type) : Part No.40023706,
MC40 (mechanical valve type) : Part No.40023707
WHEN YOU PLACE ORDERS
Please note when placing orders, that the model name should be written as follows:
MF-7900
Without automatic thread trimmer
Stitch type
2-needle, top and bottom coverstitch
3-needle, top and bottom coverstitch
Code
22
23
Tongue shape of throat plate Code
B type B
Needle gauge Code
3.2mm
32
4.0mm
4.8mm
40
48
5.6mm
6.4mm
56
64
*Refer to the subclass models list for the needle gauge of the respective models.
M F 7 9 B /
Universal type
Application
Hemming (with left hand fabric trimmer, for light-weight materials)
Code
U11
H22
Hemming (with left hand fabric trimmer, for medium-weight materials) H23
For elastic band attaching
For wider hemming
E11
H11
For endless spandex elastic band attaching
(with manual binder and tension roller)
E22
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)
Cloth puller: Gear type
Cloth puller: Flat type
Code
MC40
PL12
PL13
With automatic thread trimmer (Direct-drive motor)
Stitch type
3-needle, bottom coverstitch
2-needle, top and bottom coverstitch
3-needle, top and bottom coverstitch
Code
13
22
23
Tongue shape of throat plate Code
B type B
Needle gauge Code
4.8mm
48
5.6mm
6.4mm
56
64
*Refer to the subclass models list for the needle gauge of the respective models.
M F 7 9 B / /
Application
Universal type
Hemming (with left hand fabric trimmer, for light-weight materials)
Hemming (with left hand fabric trimmer, for medium-weight materials)
For elastic band attaching
For wider hemming
For endless spandex elastic band attaching
(with manual binder and tension roller)
For endless spandex elastic band attaching
(with air binder and tension roller)
Code
U11
H22
H23
E11
H11
E22
E23
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
Pneumatic type top and bottom thread trimming device
Pneumatic type top and bottom thread trimming device with thread-fray-prevention function
UT56
UT57
UT59
Pneumatic cloth chip suction device (electromagnetic valve type) MC37
Cloth puller: Gear type PL12
Cloth puller: Flat type PL13
Control box
S C - 9 2 1 B
Operation panel
C P - 1 8 B
MF-7900D (Semi-dry-head)
Without automatic thread trimmer
Stitch type
2-needle, top and bottom coverstitch
3-needle, top and bottom coverstitch
Code
22
23
Tongue shape of throat plate Code
B type B
Needle gauge Code
4.0mm
40
5.6mm
6.4mm
56
64
*Refer to the subclass models list for the needle gauge of the respective models.
M F 7 9 D B
Universal type
Application
Hemming (with left hand fabric trimmer, for light-weight materials)
Code
U11
H22
Hemming (with left hand fabric trimmer, for medium-weight materials) H23
/
Device and attachment
Not provided
Pneumatic cloth chip suction device
(mechanical valve type)
Code
MC40
With automatic thread trimmer (Direct-drive motor)
Stitch type
3-needle, bottom coverstitch
2-needle, top and bottom coverstitch
3-needle, top and bottom coverstitch
Code
13
22
23
Tongue shape of throat plate Code
B type B
D type D
M F 7 9 D / /
Needle gauge Code
4.0mm
4.8mm
40
48
5.6mm
6.4mm
56
64
*Refer to the subclass models list for the needle gauge of the respective models.
Application
Universal type
Hemming (with left hand fabric trimmer, for light-weight materials)
Hemming (with left hand fabric trimmer, for medium-weight materials)
For elastic band attaching
Code
U11
H22
H23
E11
Thread trimming device
Electromagnetic type top and bottom thread trimming device
Pneumatic type bottom thread trimming device
+ Air blow type wiper
Pneumatic type top and bottom thread trimming device
Code
UT51
UT56
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
Control box
S C - 9 2 1 B
Operation panel
C P - 1 8 B
SPECIFICATIONS (U11, H11, H22, H23, E11, E22, E23)
Model name
Stitch type
Needle
Lift of the presser foot
Stitch pitch adjustment
Differential feed adjustment
Lubrication
Lubricating oil
Feed dog inclination adjustment
Micro-lifter
Needle gauge (mm)
MF-7900 series
2-needle/3-needle top and bottom covering stitch
MF-7900D series
2-needle/3-needle top and bottom covering stitch
UY128GAS (#10S) #9~#12S
5mm (with top and bottom covering stitch),
8mm (with bottom covering stitch)
By dial
By micro-adjustment mechanism
Automatiac Automatic (frame: no lubrication)
JUKI Machine Oil 18 (equivalent to ISO VG18)
Provided as standard
Provided as standard
3.2, 4.0, 4.8, 5.6, 6.4
U11, H11, H22, H23, E11 : Provided as standard: 31mm: at the time of delivery /
When sewing a heavy-weight material: 33mm ※
Needle bar stroke converting function E22, E23 : Provided as standard: 33mm: at the time of delivery /
When sewing a heavy-weight material: 35mm
—
Silicon oil tank for needle tip and needle thread
Cartridge oil filter
Power requirement /
Power consumption
Weight of the machine head
U11
H11 (with PL) ※
E22, E23 (with PL)
E11 (with PL)
H22, H23
※ "H11" excepts MF-7900D Series.
Provided as standard
Provided as standard
Single-phase 100~120V / 200~240V,
3-phase 200~240V / 500VA (with automatic thread trimmer)
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)
Compressedair / Air consumption
(with automatic thread trimmer)
Device
Top and bottom thread trimmer
Auto-lifter
Bottom thread trimmer
Auto-lifter
Air blow type wiper
MC37
MC40
UT55
UT56
UT57, UT59
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Air consumption dm 3 /min (ANR)
Compressed air
MPa
456
182
637
0.7
182
456
637
0.5
0.5
0.5
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.)
2-11-1 , TSURUMAKI, TAMA-SHI,
TOKYO 206-8551 , JAPAN
PHONE : (81) 42-357-2254
FAX : ( 81 ) 42-357-2274
SEWING MACHINERY BUSINESS UNIT 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.
SEPTEMBER, 2013 Printed in Japan(C)
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Key Features
- Improved seam quality with new feed mechanism, differential-feed micro-adjustment mechanism, and looper thread twining prevention mechanism
- High-speed operation with a maximum sewing speed of 5,000sti/min
- Semi-dry-head technology eliminates oil stains on sewing products
- Direct-drive motor for swift startup, increased stop accuracy, and reduced power consumption
- Easy maintenance with externally-mounted looper thread cam and simplified maintenance mechanism
- Needle bar stroke conversion mechanism for adjusting penetrating force and thread tension for heavy-weight materials
- Front cover trimmed to allow operators to bring their hands closer to the needle entry area for increased work efficiency
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Frequently Answers and Questions
What are the advantages of the JUKI MF-7900 series coverstitch machine?
How does the MF-7900 series improve seam quality?
What is the purpose of the differential-feed micro-adjustment mechanism?
How does the looper thread twining prevention mechanism work?
What is the benefit of the direct-drive motor in the MF-7900 series?
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