The machine achieves sewing
speed of 2,700rpm. The machine's starting,
stopping, thread-trimming and automatic presser
lifting speeds have been increased to significantly
shorten total cycle time.
Many
different sewing patterns.
The machine is provided as
standard with 50 different sewing patterns.
The machine permits easy changeover of sewing
patterns for effortless execution of an inexhaustible
range of sewing specifications.
The LK-1903A is also able to
sew buttons using the same data used for the
LK-1903 (EP-ROM).
Excellent
seam quality.
Newly developed needle thread
grasping mechanism helps produce consistent
knot tying at the beginning of sewing. (This
device has been factory-set to “invoking
prohibited” status at the time of delivery.)
LK-1903A-SS-301
Auto-lifter
mechanism utilizing a new system.
The machine is
provided as standard with an auto-lifter that
uses a new stepping-motor system. This helps
reduce operator fatigue.
It is also possible
to change over the stroke of the auto-lifter
from a one-step stroke to a double-step stroke,
which offers easier positioning of a material
on the machine. For the double-step stroke,
an intermediate stopping height can be established
on the operation panel.
The work clamp foot lift can
be set to a maximum of 13mm.
The
sewing starting point can be corrected.
In cases where the needle entry
point for button sewing is to be corrected,
the sewing starting point can be corrected
without the adjustment of the relevant mechanism.
Oil
stains are eliminated.
Thanks to our
advanced dry-head technology, the frame (needle
bar and thread take-up) no longer requires
lubrication. This prevents the material from
being stained with lubricating oil.
Just a small quantity
of clean oil is supplied from the oil tank
to the hook.
The
machine is provided as standard with the active
tension (electronic thread tension control
mechanism).
Since the machine
is provided with an active tension mechanism,
it is able to set a needle thread tension
that matches various sewing conditions (such
as thread, material and sewing speed) on the
operation panel, store the data in memory
and reproduce it.
The needle thread
tension can be set separately according to
the portion of a seam, such as the beginning
of a seam, during sewing and end of the seam
(fastening stitch).
When the operation
panel IP-200B is used with the machine, the
needle thread tension can be established on
a stitch-by-stitch basis for upgraded seam
quality.
Operation
Panel (You can choose operation panel.)
STANDARD
PANEL
Functional settings,
such as pattern numbers and needle thread
tensions can be established through the operation
panel with ease. Distance between holes in
a button can be easily changed by means of
pattern enlargement/reduction feature.
Standard sewing
patterns can be assigned to pattern keys P1
to P50. Any of the sewing patterns assigned
to the P1 to P25 pattern keys can be activated
with a touch of the corresponding key. This
means that workability is improved by assigning
25 sewing patterns that are most frequently
used to those pattern keys.
As many as 20
different cycle sewing patterns, each of which
combines a maximum of 30 different sewing
patterns, can be stored in the memory.
The operation
panel has been installed at an angle and can
be placed at the top, bottom, right or left
part of the table according to the operator's
preference.
IP-200B
A large color
LCD touch panel has been adopted for the display.
It gives clear displays that allow the operator
to understand operating procedures.
The IP-200B panel
can be connected to a personal computer and
can store data on SmartMedia. This allows
data to be exchanged or shared among sewing
machines installed in a factory or among remote
factories.
The IP-200B panel
has been provided with a process improvement
supporting feature through the indication
of the operational state of the sewing machine,
and a maintenance and management feature for
indicating the needle changing timing and
cleaning timing.
Specifications
Model name
LK-1903A
LK-1903A/BR35
Max. sewing speed
2,700rpm
(normal 2,500rpm)
Button size
Type:
Round-shaped, flat button
Size:
8~32mm
(standard 8~20mm)
Type:
Round-shaped, flat button (2-holed,
4-holed)
Size:
9~20mm
For small button: 10~15mm
For medium-sized button: 12~18mm
(Those that are smaller than 10mm
or larger than 18mm
must be specially ordered.)
Thickness:
1.8mm~3.5mm
Stitch length
0.1~10mm
(0.1mm step)
Needle bar stroke
45.7mm
Lift of the work clamp
foot
Max.
13mm
Max.
11mm
Auto-lifter
Provided
as standard (stepping motor type)
Needle thread tension
Active
tension (electronic thread tension control system)
Needle (at the time of
delivery)
DP
x 17 (#14)
Hook
Standard
shuttle hook
Number of stitches that
can be stored in memory
Max.
20,000 stitches
Number of standard patterns
50
patterns
Number of data that can
be input
200
patterns ( For up to 150 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
Memory medium
EEP-ROM
/ EP-ROM
Bobbin thread counter
Provided
as standard (Up / Down method)
Supplying and sorting
of button
-
Vibration
system
Button feed
-
Horizontal
forced button-feed mechanism
Button feed mode
-
Automatic
feed mode, non-feed mode, and small-lot sewing mode
Lubrication
Hook:
minute-quantity lubrication
Lubricating oil
JUKI
New Defrix Oil No.2 (equivalent to ISO VG32)
Sewing machine motor
450W
compact AC servomotor (direct-drive system)
Power consumption
320W
350W
Weight
Machine
head (include motor) 42kg,
Control box 16.5kg
8~