JUKI LK-1910 User manual

Computer-controlled, High-speed Shape-tacking Machine
[Sewing area: 60mm (L)×100mm (W)]
LK-1910
LK-1920(With intermediate presser)
LK-1930(With intermediate presser and input function)
Every product in the
LK lineup is provided
with high-speed sewing
capability and
advanced features
Every product in the
LK lineup is provided
with high-speed sewing
capability and
advanced features
● LK-1910 (Table stand is optionally available.)
● LK-1930 (Table stand is optionally available.)
● LK-1920 (Table stand is optionally available.)

The machine runs at a sewing speed of 2,500rpm –––– Faster than any other shape-tacking
machine anywhere in the world. In addition, the machine is fully equipped with state-of-the-
art features such as a higher presser foot lift, a double-capacity shuttle hook, and a direct-
control machine head that ensures quick response and an accurate stop position. The top
model in the LK series, the LK-1930 is JUKI’s first shape-tacking machine to incorporate a
main unit input function equivalent to that equipped in our automatic sewing machines.
These rich features support the machine’s high-speed sewing performance and increased
productivity. With its large sewing area that matches a wider range of use, its hand pulley,
and its highly operable and easy-to-understand operation panel, the machine delivers to the
user dramatically improved operability.
The LK-1910 Series shape tacking lineup is on the cutting edge –––– a pioneer in a new era of
shape tacking.
LK-1910S (Standard) LK-1920S (Standard) LK-1920H (For heavy-weight materials)
The machine achieves a
maximum-grade sewing
speed of 2,500rpm.
Sewing area that matches a
wider range of applications. Fully equipped easy-to-use operation panel [LK-1910, -1920]
With its automatic correction feature,
the machine can enlarge/reduce
patterns without deforming them.
Fewer bobbin thread changes. The machine can use a wider range of thread
counts than conventional machines.
The machine can shape tack
at a maximum sewing speed
of 2,500rpm, dramatically
reducing the cycle time.
The machine has a wide sewing
area: 60mm (length) by 100mm
(width). With this large sewing area,
the machine easily adapts to the
sewing of curtain pleats, the finishing
of waistband ends for jeans, label
attachment, and many other sewing
works.
Settings for machine functions such as the
sewing speed and bobbin thread count can
be easily adjusted via the operation panel,
and cycle sewing programs for the
production of combined patterns can be
entered.
Equipped as standard with a double-
capacity shuttle hook that reduces
the frequency of bobbin thread
changes, the machine spares you
troublesome bobbin thread works.
This is a particularly great help when
sewing with lower-count threads.
With this feature, the LK Series models provide
upgraded sewing capabilities such as improved
responsiveness to heavy-weight materials. Select
either the S type (standard type) or H type (for
heavy-weight materials) to suit the use of your
machine.
100mm
60mm
Intermediate presser that securely
clamps the material [LK-1920, -1930]
The machine is provided as standard
with an intermediate presser to prevent
the material from flopping, thereby
promising beautiful seams.
Since height and stroke of the
intermediate presser can be adjusted,
quick responsiveness to changes in
material thickness or the number of
layers of materials is ensured.
IMPROVED RESPONSIVENESS AND OPERABILITY
HIGHER PRODUCTIVITY EXCELLENT SEWING CAPABILITIES

●Ample storage capacity: maximum of 360,000 stitches on one floppy disk and 691 patterns
on a hard disk.
 An EEP-ROM may be used.
●A maximum of 20,000 stitches can be input per pattern. With this large storage capacity, the
machine supports embroidery patterns with large numbers of stitches.
●Functions that are frequently used in programming works such as normal sewing (linear
sewing and spline sewing), point sewing, jumping, and thread trimming can be allocated to
specific keys mounted on the operation panel. The use of these keys reduces the time
required for data entry.
[Major input functions]
●Creation of linear, spline, arc, and circular stitches.
●Creation of various kinds of zigzag stitches, offset stitches, double-forward stitches, double-
reverse stitches, automatic back-tuck, condensation stitches, overlapping stitches, etc.
●Arrangement of move, copy, erase, and symmetry functions.
●Mechanical command to actuate the tension controller No. 3, changes in jump speed,
changes in sewing speed, etc.
●Data can be input using function numbers.
LK-1930 (Table stand is optionally available.)
Higher lift of the presser foot
The machine head is designed for improved
operability.
The feeding frame type can be selected to match the use
of the machine in your work.
Upgraded responsiveness, low vibration, and low noise
create a comfortable workplace.
With an increased maximum
lift of the feeding frame
(22mm for the magnet-driven
feeding frame and 25mm for
the pneumatic-driven feeding
frame), the machine ensures
easy placement of heavy-
weight materials.
●The hand pulley is located at
the machine arm unit to
allow the operator to visually
check the needle entry and
needle-to-hook timing with
ease.
●The machine is provided with
a needle bar reverse rotating
function. This permits the
machine to stop with the
needle rested at the highest
dead point to allow a heavy-
weight material to be placed
on the machine easily.
Two different feeding frame
types are prepared; the
monolithic type (magnet-driven)
and the separately driven type
(pneumatic-driven). Select the
type which best suits your work
and the machine application.
With the monolithic type you can
lift/lower the feeding frame using
a manual pedal＊by controlling
the pedal pressure.
＊
The manual pedal is optionally
available.
With its direct-drive machine
head (with no belt) directly
joined to a compact AC
servomotor, the machine
provides improved
responsiveness and upgraded
stop accuracy. Vibration and
noise are reduced even during
high-speed operation, thereby
achieving a comfortable working
environment.
22mm
LK-1920SA
(Pneumatic sepalately driven
feeding frame)
The LK-1930 is provided with an input function equivalent
to that equipped in the AMS-210D computer-controlled
cycle machine. With its larger storage capacity, the
machine supports diversified sewing patterns. In addition,
the sewing machine functions and patterns can be input
through the operation panel.
Abundant input functions enable the machine to respond
to the sewing requirements of all sewing patterns.
●With its automatic correction feature, the machine can
enlarge/reduce patterns without deforming them.
EXCELLENT OPERABILITY
LK-1930 (PROVIDED WITH AN INTERMEDIATE PRESSER AND INPUT FUNCTION)

Programming software for
computer controlled sewing
machine. PGM-20
Use the PGM-20 software
(separately available) for creating
pattern data. With the programming
software, data can be created in an
interactive processing manner using
a general-purpose personal
computer or ROM writer.
Needle cooler
Part No. 142-25056＊
The needle cooler blows air to the
needle, thereby preventing thread
breakage caused by hot needles.
Thread-tension-releasing device
Part No. 142-24760
By lifting the tension disk, this
device releases the needle thread
tension during jumping in basting
stitching processes.
1-pedal unit for standing work 
PK-57 Part No. GPK-57001B0
●To use the 1-pedal unit for
standing work, a junction cable
(part No. M9013-590-0A0) and
clamp (part No. E9607-603-000)
will be necessary. These parts are
separately available.
The tension controller unit is used to
partially change the needle thread
tension during the sewing of a pattern.
●To use the thread tension
controller No. 3, an air tube (part
No. BT-0400251-EB), solenoid
valve (part No. PV-1502090-00)
and solenoid valve connector
assembly (part No. 142-04754)
will be necessary. All of these
parts are separately available.
The device is best-suited to
attaching small articles such as
labels and emblems by sewing the
entire circumference.
Thread tension controller No.3
Part No. B5019-222-0B0＊
Pneumatic inverted clamp
device FU02L＊
Options with asterisks (＊) can be mounted to machines equipped with pneumatic separately driven feeding frames
(Feeding frame type: A in When you place orders).
B2553-210-D0B
B2553-210-D0A
B2554-210-D0A
B2554-210-D0B
B2554-210-D0C
142-24109
142-24000
Without knurl
With knurl
Without knurl
With knurl (right)
With knurl (left)
Without knurl
With knurl
Monolithic feeding frame blank
Separately driven feeding frame blank
Feed plate
PGM-20
●Mouse
●Digitizer
●ROM writer
●Personal
computer
Name of parts Type Part No.
WORK CLAMP AND FEED PLATE BLANK
OPTIONAL DEVICES IS AVAILABLE FOR HANDLING THE MACHINE’S
WIDE RANGE OF PROCESSES AND APPLICATIONS

LK19 Z/
Code

10
20
30
Code
2
3
Code
1
2
3
4
5
6
Code
38
39
40
41
Code
C
K
R
D
L

M
Code
F
B
D
Code
S
H
Code
S

A
Model
Intermediate presser Input function
Not provided Not provided
Provided Not provided
Provided Provided
Control box
MC-592
MC-593
Specification
For LK-1910□S: magnet-driven feeding frame
For LK-1910□A: pneumatic separately driven feeding frame
For LK-1920□S: magnet-driven feeding frame
For LK-1920□A: pneumatic separately driven feeding frame
For LK-1930□S: magnet-driven feeding frame
For LK-1930□A: pneumatic separately driven feeding frame
Power supply
Single-phase
3-phase
Single-/
3-phase
100〜120V
200〜240V
220〜415V
200〜240V
220〜415V
220〜415V for CE
(not provided with
power switch)
Application
Standard
For heavy-weight
materials
Subclass
Standard
Subclass
＊Select "F" for the magnet-driven
feeding frame, select and "B" or
"D" for the pneumatic-driven
feeding frame.
＊The table stand is not equipped with casters.
＊For the table stand (for the magnet-driven feeding frame, Code No. 38 and 40), two
pedals (starting pedal and manual pedal) are packaged together.
⇒Memory medium ＊The above listing indicates interchangeability without the use of conversion software such as PGM-20.
Feeding frame
Magnet-driven 
feeding frame
Pneumatic separately 
driven feeding frame
MC59
Control box
For LK-1910/LK-1920
For LK-1930
Pedal switch＊
1-pedal unit
3-pedal unit
PK 3-pedal unit (PK47)
Table stand
For LK-1910□S/1920□S: magnet-driven feeding frame
For LK-1910□A/1920□A: pneumatic separately driven feeding frame
For LK-1930□S: magnet-driven feeding frame
For LK-1930□A: pneumatic separately driven feeding frame
JTK
Pattern data
○: Data that can be read in ×: Data that cannot be read in
＊The memory switch setting has to be changed (the location of the origin has to be changed).
Model name
For LK-1900
LK-1910/1920
/1930 For AMS-206C For AMS-210C (Resolution: 0.16mm)
For AMS-210C
AMS-210D
○: Interchangeable ×: Not interchangeable
● Table stand: optional
Code
5000
5001〜
Please note when placing orders, that the model name should be written as follows:
●To order, please contact your nearest JUKI distributor.
＊

Models used
⇒
LK-1910/1920
LK-1930
For LK-1910
LK-1920
 EEP-ROM 3.5FD EEP-ROM EP-ROM EEP-ROM 3.5FD 3.5FD
○ ×○×○××
○ ○○×○○○
○ ×○○○
○ ××××
For LK-1930 For LK-1900 For AMS-206C For AMS-210C
(Resolution: 0.16mm)
For AMS-210C
AMS-210D

Models used

LK-1910/1920/1930

Part name

Feeding frame
Feed plate
WHEN YOU PLACE ORDERS
LISTING OF DATA THAT CAN BE READ IN
FEEDING FRAME INTERCHANGEABILITY

Model name
Application

Max. sewing speed
Sewing area
Stitch length
Needle bar stroke
Lift of the feeding frame
Lift of the intermediate presser
Stroke of intermediate presser
Needle (at the time of delivery)
Hook
Feed motion work clamp foot
Number of stitches 
that can be stored in memory
Number of patterns 
that can be input
Input function

Enlarging/Reducing facility

Memory medium

Bobbin thread counter
Lubrication
Lubricating oil
Sewing machine motor
Power consumption
Weight
LK-1910S
Standard
LK-1910H
For heavy-weight
materials
LK-1920S
Standard
LK-1920H
For heavy-weight
materials
LK-1930S
Standard
LK-1930H
For heavy-weight
materials
2,500rpm (when stitch length is 3mm or less)
60mm (L)×100mm (W)
 0.1〜10mm 0.1〜12.7mm
 41.2mm
Max. 22mm (electromagnetic), Max. 25mm (pneumatic)
 ― 18mm
 ― Standard 4mm (0mm and 4〜10mm)
DP×5 (#14) DP×17 (#18) DP×5 (#14) DP×17 (#18) DP×5 (#14) DP×17 (#18)
Double-capacity shuttle hook
R-theta intermittent feed (2-shaft drive by stepping motor)
Max. 10,000 stitches
64 patterns
Not provided
20〜200% (1% step)
(by increasing/decreasing the stitch length)
EEP-ROM
Provided as standard
Centralized oil wick lubrication
JUKI New Defrix Oil No.2 (equivalent to ISO VG32)
400W compact AC servomotor (direct-drive system)
Single-phase, 3-phase 600W
Max. 360,000 stitches
(Max. 20,000 stitches/pattern)
691 patterns
Provided as standard
1〜400% (0.1% step)
(by increasing/decreasing the stitch
length or the number of stitches)
2DD/2HD 3.5 micro-floppy disk
(EEP-ROM can also be used.)
Machine head (include motor) 46kg, control box 16.5kg Machine head (include motor) 
46kg, control box 18kg
SPECIFICATIONS
The environmental management system to promote and conduct
➀the technological and technical research, the development and
design of the products in which the environmental impact is
considered,
➁the conservation of the energy and resources, and the recycling,
in the research, development, design, distribution, sale and
maintenance service of the industrial sewing machines,
household sewing machines and industrial-use robots, etc. and
in the sale and maintenance service of the data entry system
and in the purchase, distribution and sale of the household
commodities including the healthcare products.
HEAD OFFICE
EMS Accreditation
RE005 089
ISO14001:1996
REG.NO.JSAE389
MARKETING & SALES H.Q.
✽ 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 soy ink on recycle paper.
JUNE, 2005 Printed in Japan(AD)
8-2-1 , KOKURYO-CHO, CHOFU-SHI,
TOKYO
182-8655 , JAPAN
PHONE :
(81)3-3480-2357, 2358
FAX :
(81)3-3430-4909, 4914
http://www.juki.com