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Computer-controlled, High-speed Bartacking Machine
LK-1900 SERIES
The machine runs at 2,700rpm, the highest sewing speed
ever achieved worldwide.
● LK-1900S (Table stand is optionally available.)
Extraordinary advances in productivity,
operability, and sewing capabilities!
● Bartacking pocket
lip of suits (S type)
The machine demonstrates outstanding sewing capabilities
with its world-record sewing speed of 2,700rpm.
This computer-controlled machine is provided as standard
with 30 different sewing patterns, all of which can be
instantaneously selected enlarged, and reduced. With its
direct-driven machine head directly coupled with a
compact AC servomotor, the machine promises excellent
responsiveness and upgraded stop accuracy. In addition,
with its newly developed high-torque, high-precision feed
mechanism, the machine offers remarkable sewing
capabilities. The feed mechanism also reduces vibration
and noise even during high-speed operation, thereby
ensuring a more comfortable working environment.
The LK-1900 Series offers more than just higher efficiency
and upgraded flexibility in the bartacking process ––
it opens up an entirely new era in bartacking.
● LK-1900S (Table stand is optionally available.)
● Bartacking crotch of jeans (H type)
● Attaching the shoulder straps to brassier (F type)
● Bartacking shoulder of running shirt (M type)
＊F-type and M-type models are provided with exclusive parts to prevent thread from being stained.
HIGHER PRODUCTIVITY
The machine ensures higher productivity with
its world-record sewing speed in bartacking,
2,700rpm.
The machine's maximum sewing speed of 2,700rpm, far
exceeds the speeds of conventional bartacking machines,
setting a new world record. Marked reductions have been
achieved in the time required to lift/lower the presser foot,
perform jumping, trim the thread, and operate the wiper,
thereby reducing the total cycle time and ensuring higher
productivity.
EXCELLENT SEWING CAPABILITIES
Sewing capabilities that flexibly respond to a
wide variety of materials.
With its upgraded feed efficiency and increased needle
penetration force, the machine offers dramatically improved
sewing capabilities. To serve a wider range of applications,
the machine is available in four models: the S type (standard),
H type (for heavy-weight materials), F type (for foundation),
and M type (for knits and knitted fabric).
＊The maximum sewing speed is 2,700rpm for the S and H types.
The normal sewing speed is 2,000rpm for the F and M types.
This machine opens up a new era
in bartacking.
IMPROVED OPERABILITY
● Operation panel
Easy entry of settings through the operation panel.
Sewing speed, the value set for the bobbin thread counter, and all
other settings for the machine functions can be adjusted with ease
via the operation panel. As many as seven frequently used sewing
patterns can be assigned to the function keys for single-key calling.
Cycle sewing patterns combining several different sewing patterns
can also be assigned to the function keys. In addition, the machine's
standard bobbin thread counter is equipped with a four-digit display.
And, for easier operation, the operation panel can be installed on
the top surface, undersurface, or left or right side of the table.
By combining exceptional responsiveness with
low-noise and low-vibration operation, the
machine allows the operator to carry out sewing
works in complete comfort.
Function key
● The panel can be positioned as desired.
The machine head's slim shape provides a larger space under the
arm for easier handling of the material and continuous sewing
works. The machine head is directly driven by a compact AC
servomotor, upgrading responsiveness and achieving a higher stop
accuracy. In addition, the machine is provided with a needle barreverse function for stepping with the needle raised to the highest
dead point. This permits easy setting of heavy-weight materials.
● Wider space under the arm and slim-in-shape body
UPGRADED FLEXIBILITY
● Direct-driven machine head (with no belt)
The machine speedily executes a wide variety
of sewing patterns.
The machine is provided as standard with 30 different patterns
such as large bartacking, small bartacking, and linear
bartacking in accordance with the needle entry pattern and
number of stitches. The pattern that best suits the current
sewing process can be selected in just a few easy steps.
The machine's sewing area is 20mm by 40mm.
Since its sewing area responds to linear bartacking and most
other bartacking processes, the machine is capable of fully
utilizing a wide variety of patterns. The machine is provided
with a large-capacity memory for storage of a wide range of
scales for enlargement/reduction of patterns, as well as a
sufficient number of stitches and patterns, thereby ensuring
even greater flexibility.
UPGRADED MAINTAINABILITY
The machine design does not require a feed
cam or a stop-motion mechanism.
Since the machine has neither a feed cam nor a stop-motion
mechanism that mechanically stops the machine, no
maintenance is required. Since no stop-motion noise is
generated when the machine stops, the operator can enjoy the
comfort of an even quieter working environment.
High-quality products are finished and excellent
flexibility is attained through easy operation.
Computer-controlled, High-speed Bartacking Machine for Eyelet Buttonholes
LK-1901
(Table stand is optionally available.)
● Seams on jacket
The machine ensures high-quality bartacks on eyelet buttonholes.
The machine is provided with a material-drawing mechanism which draws the right and
left parallel portions of an eyelet buttonhole near to one another. The machine
performs bartacking with the right and left parallel portions of the eyelet buttonhole
drawn near to one another after the buttonhole is clamped under the work clamp foot,
thereby finishing highly durable and well-tensed eyelet buttonholes.
The sewing pattern best suited to the sewing product to be
bartacked can be selected by single-key operation.
Three different sewing patterns (21-, 28- and 36-stitch bartacking) are prepared to
enable easy switchover of sewing sizes. If the sewing patterns are assigned to the
function keys on the operation panel, the sewing patterns can be called up or changed
with single-key operation. The machine sews the most optimally suited bartacks on
eyelet buttonholes on the front bodies of garments and straight buttonholes that differ
in stitch number and size on jacket lapels, thereby improving the finished quality of
sewing products.
● Straight buttonhole on lapel
The material drawing mechanism can be switched to ON/OFF.
The material drawing amount can be adjusted to 3mm at maximum. The material
drawing mechanism can be switched ON/OFF in accordance with the setting of the
memory switch. With these features, the material drawing mechanism can be used
with greater flexibility.
SPECIFICATIONS
Model name
Application
Sewing speed
Needle (at the time of delivery)
LK-1901S
Standard
Max. 2,700rpm
DP×5 (#16)
Available pattern numbers
11, 12, 13
Material-drawing amount
Max. 3mm
＊Specifications other than those given above conform to the specifications of the LK-1900.
● Eyelet buttonhole on the front garment body
The leading bartacking machine in productivity
and upgraded finished product quality.
Computer-controlled, High-speed Belt-loop-attaching Machine
LK-1902
(Table stand is optionally available.)
● List of presser feet and feed plates for LK-1902
(for belt-loop attaching)
Work clamp foot (asm.)
The machine allows easy selection of the optimal
sewing pattern.
Needle
(at the time of delivery)
Available pattern
numbers
Pattern
Nos.
19,
20,
21
10
7
Option
2.8
2.4
135-45504
27
27.4
Finger guard: 135-45710
Pattern
No.22
10
135-45801
135-47161
LK-1902H
Standard
For heavy-weight
materials
Max. 2,700rpm
DP×5(#16)
DP×17(#19)
17, 18, (19, 20, 21, 22＊) Call-up of pattern
numbers marked with an asterisk (＊) is
disabled at the time of delivery.
＊Specifications other than those given above conform to the specifications of the
LK-1900.
37
2.4
LK-1902S
Option
37
41.5
135-47005
Pattern
No.22
2.8
Sewing speed
24.8
Feed
plate
patterns
Nos.17
and 18
provided
as
standard
for LK1902
7
Application
17
135-45660
SPECIFICATIONS
Model name
Remarks
Finger guard: 135-44515
The machine head has been designed with an
emphasis on operability.
With its broadly curved feed bracket (presser arm), the machine
permits easy placement of the material to be sewn. The slimly
shaped bed and head design that allows free space under the arm
demonstrates greater operability in handling materials on the
machine and continuous processes. These features contribute
substantially to increased productivity in belt-loop attachment
processes.
2
LK1902
S△
H△
Feed plate
141-43002
7
The machine is provided as standard with six different linear
bartacking patterns. Since the sewing size can be easily changed,
the optimal number of stitches and sewing size can be speedily
selected according to the belt-loop width. If the normally used
patterns are assigned to the function keys, a desired pattern can be
called up or changed with single-key operation.
135-44465
Finger guard: 135-47211
37.4
＊A finger guard is included in the presser foot (asm.)
Stitch diagram
Sewing (Note 2)
size (mm) No. of
work
Length- Cross- clamp
wise
wise foot
No.
Number of
stitches
No.
Number of
stitches
TABLE OF THE STANDARD PATTERNS
Stitch diagram
Sewing (Note 2)
size (mm) No. of
work
Length- Cross- clamp
wise
wise foot
1
2.0 16
2
2.0 10
1
4
6
0
28
4
19
0
6
4
20
36
0
25
6
4
21
2
41
0
25
6
1
＊
6
22
2.5 16
44
0
20 4.0
20 4.0
35 (Note 3)
7
13
36 2.5
6
14
14 2.0
8
15
21 2.0
8
16
28 2.0
8
5
(Bottom)
(Bottom)
(Bottom)
8
10
0
28
10
21
29
(Bottom)
6
0
30
(Bottom)
28 2.5
20
(Top)
12
18
(Top)
6
Lengthwise linear bartacking
21 2.5
20 4.0
27
6
11
56
26
4
64 3.0 24
20 4.0
(Bottom)
＊
42
25
(Bottom)
56 3.0 24
3, 9
(Top)
4
6
10
36
(Top)
9
24
(Top)
7
＊
28
(Top)
1
2.5 16
Lengthwise bartacking
＊
23
11
36
8
2
(Top)
2.0 10
(Top)
1
Small bartacking (eyelet buttonhole)
25
11
28
2
11
1
2.0 10
7
Large bartacking
10
(Bottom)
Large bartacking
18
2
3.0 24
5
2
11
7
＊
10
1
2.5 16
4
0
11
1
3
21
11
42
＊
1
17
2
Linear bartacking
1
28
20
0
20
0
(Note) 1. Sewing size shows the dimensions when the
scale rate is 100%.
2. Refer the No. of work clamp foot to the separate
table of work clamp foot.
3. For No. 22, modify the work clamp foot blank
for use.
4. Use the patterns with＊marks for sewing denim.
TABLE OF THE WORK CLAMP FOOT
● Options
● Provided as standard
(Work clamp foot and feed plates other than standard ones are optional parts.)
11
135-42451
(asm.)
135-71955
(asm.)
135-61360
(asm.)
135-18659
(asm.)
135-54803
141-16206
135-48003
141-16305
141-16602
11.4
27.4
29
20
S
F
F
135-73407
135-48300
135-33104
Standard
accessory for
F (foundation)
type machine
head.
★(1)
For lengthwise
bartacking
(packed
together with
accessories
supplied with
F-type
machine head)
★(1)
Standard
accessory for
H (heavyweight
material) type
machine
head.
Standard
accessory for
M (knit and
knitting fabric)
type machine
head.
135-33104
Standard
accessory for
S (standard)
type machine
head.
40
54
20
141-16701
141-16404
H
M
22
37.3
21.2
24
S
H
S
135-48300
For extralarge
bartacking
135-33104
For small bartacking
25
2.4
15
F
29
F
135-73407
For
lengthwise
bartacking
★(2)
14.5
24
40
5.4
17.5
25
15
18.5
4.8
5.4
23
4.6
14.5
17.5
Remarks
141-16503
25
5.6
20
27
2
12
(without knurl) (without knurl) (without knurl)
25
Feed plate
＊Finger guard
5.6
4.5
10
22
4.5
5.1
21
27
(without knurl) (without knurl)
Application
code
50
40
40
5
27
35
17.5
141-16909
10
22
3.4
23
12
5
27
35
5.6
141-16800
40.5
40
23
141-16107
4.5
20
27
32.8
10
135-48557
(asm.)
24.1
9
135-48151
(asm.)
32.8
8
135-42964
(asm.)
32.3
7
135-48151
(asm.)
32.6
6
135-71955
(asm.)
33.4
5
50
32.8
40
Work
clamp
foot
4
24.1
135-18659 (asm.)
3
32.6
2
40.5
1
For
lengthwise
linear
bartacking
F
135-33104
For small
bartacking
★(3)
For JE: ★(1) Option
★(2) Packed together with accessories supplied with F-type machine head.
★(3) Standard accessory for F (foundation) type machine head.
＊Install a finger guard suitable for each work clamp foot when replacing the work clamp foot.
● Foot pedal for standing work
(optional)
TABLE OF THE OPTIONAL PARTS
Name of parts
Feed plate blank
Type
Part No.
Without knurl
141-20109
With knurl
141-20307
t=1.2 Without knurl/stainless steel t=0.8
Work clamp foot
face plate (asm.)
Face plate for presser blank
141-20505
141-21263
t=3.2
Presser blank
Needle hole guide
φB
φA
With knurl/Processed (right)
141-21701
With knurl/Processed (left)
141-21800
A=1.6 B=2.6 With relief slit
Standard type
B2426-280-000
A=1.6 B=2.0 Without relief slit
F and M types
D2426-282-C00
A=2.3 B=4.0 Without relief slit
For heavy-weight material
141-09607
● 2-pedal unit for standing work＊
[Part No. M8520-580-0A0]
● Pedal switch conversion cable asm.
[Part No. M9012-590-0A0]
A=2.7 B=3.7 Without relief slit
D2426-MMC-K00
For extra heavy-weight material
Finger guard (1)
135-33104
A=59 B=74
For extra-large bartacking
135-48300
A=66.5 B=43
For lengthwise bartacking
135-73407
A=21.5 B=35.5
For specially ordered
work clamp
141-20000
A
A=56.5 B=64
B
A
Finger guard (2)
● PK-57＊
[Part No. GPK-570010B0]
B
Finger guard (3)
A
B
SS-8110310-SP
● Pedal switch conversion cable asm.
[Part No. M9013-590-0A0]
＊To connect the cable asm. to the electrical box,
a conversion cable (separately available) is
necessary.
SPECIFICATIONS
Model name
Application
LK-1900S
LK-1900H
LK-1900F
LK-1900M
Standard
For heavy-weight materials
For foundation
For knit
Sewing speed
Max. 2,700rpm
Normal 2,000rpm
Sewing area
20mm (L)×40mm (W)
Stitch length
0.1∼10mm
Needle bar stroke
41.2mm
Lift of the work clamp foot
Max. 17mm (standard: 14mm)
Needle
(at the time of delivery)
DP×5 (#16)
DP×17 (#19)
Hook
DP×5 (#11)
DP×5 (#11)
Standard shuttle hook
Input pattern
30 patterns are provided as standard.＊
Number of stitches that
can be stored in memory
Max. 10,000 stitches
Number of patterns that
can be input
94 patterns (For up to 64 patterns, sewing data can be added.)
Enlarging/Reducing facility 20∼200% (1% step), Pattern enlargement/reduction can be done by increasing/decreasing the stitch length
Provided as standard (The bobbin thread counter can be changed over to the No. of pcs. counter.)
Bobbin thread counter
EP-ROM
Memory medium
Centralized oil wick lubrication
Lubrication
Lubricating oil
JUKI New Defrix Oil No. 2 (equivalent to ISO VG32)
Sewing machine motor
400W compact AC servomotor (direct-drive system)
500VA
Power consumption
Machine head (include motor) 41kg, Control box 16.5kg
Weight
＊Call-up of sewing patterns that do not match the work clamp foot mounted at the time of delivery are prohibited.
However, it is possible to call them up by changing the setting of the memory switch.
WHEN YOU PLACE ORDERS
Please note when placing orders, that the model name should be written as follows:
● Machine head
LK-1900
LK-1901S
Application
Code
Standard
S
For heavy-weight materials
H
For foundation
F
For knit
M
Application
LK-1902
Code
Standard
Application
S
Standard
H
Electromagnetic
S
Pneumatic
A
● Table stand: optional
MC-590Control box
S
For heavy-weight
materials
● Control box
Work clamp foot Code
Code
JT-K
Power supply
Code
Standards (S, H, F types)
Code
Table for model
Code
100∼120V
C
Standard (LK-1900, LK-1901)
35
200∼240V
K
36
2
220∼415V
R
For horizontal placement of head
(LK-1902)
4
200∼240V
D
220∼415V
L
220∼415V
(not provided with a
power switch)
M
For eyelet buttonhole
1
For belt-loop-attaching
M type (for knit)
Single-phase
3-phase
＊The table stand is not equipped with casters.
● To order, please contact your nearest JUKI distributor.
✽ 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.
JULY, 2001 Printed in Japan(T)