JUKI MF-7700D, MF-7723D-U10-B56, MF-7700D/UT31, MF-7723D-U10-B56/UT33, MF-7700D/UT33 Brochure & Specs
MF-7700D
Series
The advanced dry-head technology
prevents oil stains.
Semi-dry-head, Top and Bottom Coverstitch Machine
DRY-HEAD
TECHNOLOGY
A world-
first
feature
A world-
first
feature
MF-7723D-U10-B56
MF-7700D Series
Semi-dry-head, Flat-bed, Top and Bottom Coverstitch Machine
Semi-dry-head, Flat-bed, Top and Bottom Coverstitch Machine
JUKI's dry-head technology protects
sewing products from being stained with oil.
MF-7700D Series
The seam conditions can be changed over
according to the application or material, i.e., soft
and low-tensed seams for inner wear and
high-grade well-tensed seams for outer wear.
By reducing the thread tension, beautifully-finished
seams and satisfactorily-finished body-fitting
products are produced. In addition, the machine
has achieved low-vibration and low-noise
operation, laying importance on comfort of sewing
and ease of handling.
It is possible to select (change over) the stitch type according to sewing items.
MF-7700D
MF-7700D/UT31
MF-7700D/UT33
Semi-dry-head, Flat-bed, Top and Bottom Coverstitch Machine
Semi-dry-head, Flat-bed, Top and Bottom Coverstitch Machine
with Electromagnetic Type Top and Bottom Thread Trimming Device
Semi-dry-head, Flat-bed, Top and Bottom Coverstitch Machine
with Pneumatic Type Top and Bottom Thread Trimming Device
The world's first semi-dry-head top and bottom coverstitch machine has been developed.
With the excellent functions inherited from the MF-7700 Series, the MF-7700D 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.
Neither the replacement of parts nor the
changing of thread tension is required.
The stitch type can be changed over
(soft-seams/well-tensed seams) simply by
changing the thread path.
MF-7723D-U10-B56/UT33
Soft-seam Well-tensed seam
Expand
Expand
Expand
Contract
Contr act
Contract
Simplified maintenance mechanism
The machine comes with diverse and trouble-free functions in consideration of the shop-floor.
As a result of the commonality of components,
commercially-available components (presser foot, throat plate
and needle clamp) are now applicable and easily obtainable.
It is possible to finely adjust the differential feed amount to a
best-suited value for the material to be used. In addition, the dif ferential
feed ratio remains the same even when the stitch length is changed.
components are applicable with no additional work
.
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.
The feed dog inclination can be externally adjusted with ease.
This adjustment mechanism effectively helps improve the
material holding ability of the feed dog and prevent uneven
material feed and puckering.
Micro-lifter mechanis
m
Feed dog inclination adjustment mechanism
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 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.
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
substa nces that c an harm th e ozone layer.
Main feed Differential feed
The frame no longer requires oiling.
Dry-head technology has materialized
a frame which does not need oiling.
Environmental consciousness
Differential-feed micro-adjustment mechanism
Smooth feeding
Material
Throat plate
Clamping the material
Direction of feed
The material holding ability is improved
MF-7700D Series
＊1Stitch length can be adjusted to 4.4mm at the maximum.
＊2The 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.
*For the shape of the throat plate, B type is standard.
The D type throat plate allows the needle thread to stretch moderately.
List of subclass machines
List of gauges and knives
Application
Type
Needle gauge
Needle clamp
B
D
Throat plate
＊
tongue shape of
throat plate
Presser foot asm
Main feed dog
Differential-feed dog
U10 C10 E10
U10
(4needle)
Seam
U10
Universal type
(basic type)
U10
4-needle
C10
Collarette
attaching
E10
Elastic lace
attaching
Model No.
MF-7722D-U10-B□□
MF-7723D-U10-B□□
MF-7723D-U10-D□□
MF-7723D-U10-B□□ /UT31
MF-7723D-U10-D□□ /UT31
MF-7723D-U10-B□□ /UT33
MF-7723D-U10-D□□ /UT33
MF-7724D-U10-D60
MF-7722D-C10-B□□
MF-7722D-C10-B□□ /TC13
MF-7723D-C10-B□□
MF-7723D-C10-B□□ /TC13
MF-7722D-E10-B□□
MF-7722D-E10-B40/MD10
MF-7722D-E10-B40/MD10/TC13
MF-7723D-E10-B□□
MF-7723D-E10-B□□ /MD10
MF-7723D-E10-B□□ /MD10/TC13
3.2mm
13350004
40058587
40058589
4.0mm
13350103
40058706
40058956
40058708
4.8mm
13350202
40040514
40060923
13376058
5.6mm
13350301
40040515
40040516
40082974
6.4mm
13350400
40040513
40061463
40082974
13353701
13357603
6.0mm
40049609
40049382
40049394
3.2mm
13350004
40058549
40073947
40058579
40058555
40058556
4.0mm
13350103
13351408
40073948
40056504
4.8mm
13350202
40057971
40073949
40057973
5.6mm
13350301
13351606
40073950
40056410
6.4mm
13350400
13351705
40056411
3.2mm
13350004
40058580
40058591
40079714
40058582
4.0mm
13350103
13356001
40018288
40079715
13358106
5.6mm
13350301
13356209
6.4mm
13350400
13356308
40018289
40079716
13358205
40038754
40038091
13353909
13357801
13353800
13357702
13354204
13358304
Number
of
needles
Number
of
threads
Needle
gauge
(mm)
Stitch
length*
1
(mm)
Differential-
feed ratio
Presser lifting
amount*
2
(mm)
Max. sewing
speed
(sti/min)
2
3
4
2
3
2
3
4
5
6
4
5
4
5
3.2,4.0
4.8,5.6,6.4
6.0
3.2,4.0
4.8,5.6,6.4
3.2,4.0
4.0
5.6,6.4
1.2〜3.6
1.2〜2.5
(Max.3.6)
1.2〜3.6
1.2〜3.6
1:0.7〜1:2
1:0.7〜1:2
1:0.7〜1:1.1
1:0.7〜1:1
5(8)
4
5(8)
3(6)
4,000
4,000
4,000
4,000
()
Upper knife
Lower knife
U10
Universal type
(basic type)
Polo shirtsT-shirts
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.
It is not a specific-purpose model, but a basic one which can be used for a broader
range of processes independently.
★C10: Modification to the collarette attaching type model is easily achieved simply
by changing the throat plate and feed dog.
C10
For collarette attaching
BriefsUnderwear
This model is best suited for attaching collarettes on underwear, briefs and knitwear.
Ease of use is further improved by using the electromagnetic type tape cutter (TC13).
E10
Shorts
Ladies'
inner wear
This model is best suited for the sewing of elastic lace in shorts and underwear.
The right hand fabric trimmer cuts the multi-layered part of a joined section with
outstanding consistency.
Beautifully finished products are achieved with the seams and material edges
aligned.
The right hand fabric trimmer mechanism’s easy installation / removal of the entire
unit facilitates the adjustment of related parts, such as the alignment of a looper.
For elastic lace attaching
(with right hand fabric trimmer)
Device
UT31
Compressed air / Air consumption (sewing machine with UT33)
It is an electromagnetic type
automatic thread trimming
device/auto-lifter.
The machine does not need an
air compressor to achieve easy
layout changing.
MF-7723D-U10-B56 / UT31 Electromagnetic type top and bottom
thread trimming mechanism
Presser lifter drive mechanism
Thread trimmer drive mechanism
Presser lifter drive mechanism
Thread trimmer drive mechanism
UT33
It is a pneumatic automatic
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.
By using an air blow type wiper nozzle (supplied as an accessor y), the needle
thread can be blown upon thread trimming at the end of bottom coverstitching.
MF-7723D-U10-B56 / UT33
Pneumatic type top and bottom
thread trimming mechanism
Air blow type wiper
TC13 MD10
-
Air blow
type wiper
0.7
182
0.5
Air consumption
dm
3
/min (ANR)
Compressed air
MPa
Electromagnetic type top and bottom thread trimming
device/Auto-lifter
Pneumatic type top and bottom thread trimming device/
Auto-lifter
Electromagnetic type
tape cutter
Mechanical type metering
device
Micro adjustment screw
Micro adjustment screw
Micro adjustment screw
Main adjustment nut
Main adjustment nut
Main adjustment nut
It is a device for cutting the tape or lace at the
beginning or end of sewing. It is easily actuated to
cut tape with the knee switch.
●
The knife is able to cut lace and tape up to
40mm wide.
●
The sharpness of the knife can be easily
adjusted. In addition, replacement of the
moving knife and counter knife, as well as the
adjustment of their mesh, can be carried out
with ease.
TC13 Adjustment of the tape feeding amount
●
The metering device supplies a consistent
length of tape in synchronization with the feed.
(tape lengths: 0.9 to 3.5mm per stitch.)
●
Elastic tapes of up to 80mm in width can be used.
The tape width can be easily adjusted. For lace of
which the width is 15 to 80mm, change the
currently-mounted guide with the wider-tape guide
that is supplied with the unit as an accessory.
●
The drive roller/driven roller can be held open to
facilitate tape placement.
Universal type
Application Code
U10
3.2mm
4.0mm
4.8mm
Needle gauge Code
32
40
48
5.6mm
6.4mm
Needle gauge Code
56
64
Electromagnetic type top and
bottom thread trimming device
Pneumatic type top and bottom
thread trimming device
Thread trimming device Code
UT31
UT33
2-needle, top and bottom coverstitch
Stitch type
Code
22
3-needle, top and bottom coverstitch
23
B type (Standard)
D type
Tongue shape of throat plate
Code
B
D
△△
△△ △△ △△
△△ △△ △△/
/
2-needle, top and bottom coverstitch
Stitch type
Code
22
3-needle, top and bottom coverstitch
23
4-needle, top and bottom coverstitch
24
B type (Standard)
＊For model category "24"(4-needle),
tongue shapis type D.
＊1 Specify the MD10 when placing your order.
＊2 The TC13 can be retrofitted to the machine.
＊For stitch type category "24" (4-needle),needle gauge category only 60 can be selected.
＊For stitch type category "22" (2-needle),needle gauge category "56" and "64" cannot be selected.
＊For stitch type category "23" (3-needle),needle gauge category "32","40" and "48" cannot be selected.
＊For stitch type category "22" (2-needle),
needle gauge category "56" and "64" cannot be selected.
＊For stitch type category "23" (3-needle),
needle gauge category "32","40" and "48" cannot be selected.
Tongue shape of throat plate
Code
B
D type
D
Universal type
Application Code
U10
Collarette attaching
C10
Elastic band attaching (with right hand fabric trimmer)
E10
3.2mm
4.0mm
4.8mm
Needle gauge
Code
32
40
48
5.6mm
6.0mm
6.4mm
Needle gauge
Code
56
60
64
Not provided
Mechanical type metering device
＊1
Electromagnetic type tape cutter
＊2
Thread trimming device Code
MD10
TC13
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 bar stroke converting function
Silicon oil tank for needle tip and needle thread
Cartridge oil filter
Weight of the machine head
MF-7700D Series
3-needle top and bottom covering stitch
UY128GAS (#10S) #9S
~ #12S
5mm (with top and bottom covering stitch), 8mm (with bottom covering stitch)
By dial
By micro-adjustment mechanism
Automatic (frame: no lubrication)
JUKI MACHINE OIL 18 (equivalent to ISO VG18)
Provided as standard
Provided as standard
31mm
Provided as standard
Provided as standard
46kg (without device), 49kg (with UT33), 52kg (with UT31)
Specifications
When you place orders
Please note when placing orders, that the model name should be written as follows:
•
To order, please contact your nearest JUKI distributor.
SEWING MACHINERY BUSINESS UNIT
✽
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.
JUNE, 2011 Printed in Japan(C)
2-11-1, TSURUMAKI, TAMA-SHI,
TOKYO
206-8551, JAPAN
PHONE : (81) 42-357-2254
FAX :
(
81
)
42-357-2274
http://www.juki.com
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