LK-1903A, LK-1903A/BR35 (September, 2003) 3/4
φB
φC
A
A
B
A
A
B
MODELS CLASSIFIED BY BUTTON SIZES
SHAPE OF BUTTON
OPTIONS
OPERATION PANEL
BUTTON CARRIER
● Parts shown in parentheses ( ) are optional.
＊Engraved marker
Model name LK-1903A-311/BR35 LK-1903A-312/BR35
Button size For small button
For medium-size button
Outside diameter
that can be adjusted (mm)
φ10〜φ15 φ12〜φ18
Sewing
Length (Y) 0〜3.5 0〜4.5
size (mm)
Width (X) 0〜3.5 0〜4.5
1.7 2.7Thickness
(2.2)(mm)
＊＊
14190458 P MAZ166070B0 J
Button clamp
Right
(MAZ165080B0) H −−
jaw lever
−−−−
(combination)
Part No.
−−−−
14190557 P MAZ166080B0 J
Left
(MAZ165080B0) H −−
−−−−
−−−−
1.6 1.6
Needle hole A
(1.8)
guide (mm)
B φ3.5 φ3.5
C φ1.6 φ2.0
MAZ15501000
Part No. (14149603) MAZ15601000
−
Feed plate MAZ15502000(□8.5) MAZ15602000(□10)
Code
B
E
F
G
L
H
M
J
N
K
P
C
Part No.
165-58009
165-87305
165-87404
165-87503
165-87909
165-87602
165-88006
165-87701
165-88105
165-87800
165-88204
165-87107
Distance
B(mm):
Diameter
of set pin
1.2
1.0
1.0
1.0
1.2
1.0
1.2
1.0
1.2
1.0
1.2
1.2
Distance
A(mm):
Distance
between
holes in
button
3.2
2.0
2.2
2.4
2.4
2.6
2.6
2.8
2.8
3.0
3.0
3.8
Code
A
Q
R
S
T
U
V
W
F1
D
X
Z
G1
H1
E1
Part No.
165-57902
165-90507
165-90606
165-88501
165-88600
165-88709
165-88808
165-88907
165-89806
165-87206
165-89004
165-89202
165-89905
165-90705
165-89707
Distance
B(mm):
Diameter
of set pin
1.0
1.0
1.0
1.0
1.2
1.2
1.2
1.2
1.5
1.0
1.2
1.4
Tapered
1.2
1.2
Distance
A(mm):
Distance
between
holes in
button
2.6
2.0
2.2
2.4
2.4
2.6
2.8
3.0
3.0
3.1
3.1
3.1
3.2
3.6
4.0
Standard
Optional
For 2-holed buttonFor 4-holed button
Configuration of button carrier
Automatic supply mode
The machine and button feeder are connected and run
together. It starts sewing a button by pressing a pedal,
thread trimmer is activated after sewing a button, and
button feeder sets the next button in position
automatically. The machine repeats these operations
with this mode.
Mode for individual
This mode is for the machine only. As button feeder
will not be activated, this can be used as a standard
button sewing machine.
Mode for small lots
Same as the automatic mode, but parts feeder will not
be activated. It discharges the required amount of
buttons in the index and sews buttons automatically.
This is suitable for smaller lots.
LK-1903A/BR35
●Magnet wiper
1.2mm or more
1.2mm or less
Shape of
button
Remarks
Applicable button
Thickness of button
should be 1.8〜3.5mm.
Inapplicable carrier
Button without indented
part (concavo-convex
shape button)
Button with thin edge
may not be fed by the
button feeder.
Applicable model Part No. Description Quantity
40018334 Solenoid for wiper (asm.) 1
SM6041150TP Screw 2
LK-1903A TA1250705RO Rubber plug 1
HX00123000C Cable clip 4
SL4041091SC Screw 4
Model Applicable model Part No. Description
Q123 LK-1903A MAQ123000A0
Q124 LK-1903A/BR35 MAQ124000A0
Z099 LK-1903A 14134050
― LK-1903A/BR35 ―
When you install magnet wiper on the machine head after factory shipment, a part of
belt cover should be modified.
Button spacer (commonly
used for men's wear and
ladies' wear)
Button rising bar (asm.)
(Attachment and removal
are possible.)
For thick buttons
(Thickness of button
should be 2.5〜5.0mm.)
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