– 3 –
No.
Model name
Item
Application
LK-1900BN
(NFC Application)
LK-1901BN
(NFC Application)
LK-1902BN
(
NFC Application
)
LK-1903BN
(NFC Application)
1 Application Bar-tacking Eyelet buttonhole
bar-tacking
Belt-loop
attaching
Lock stitch button sewing
(Caution) 4.
2 Sewing area X-Direction (right, left) 40 mm;
Y-Direction (forward, backward) 30 mm
—————
3 Button size ————— Type: Round-shaped,atbutton
Size: ø8 to ø32 mm,
Standard (ø8 to ø20 mm)
4 Max. sewing speed * 3,200 sti/min max.
(*2,700 sti/min for the 2-fold
semi-rotary hook)
* 3,000 sti/min max.
(When sewing pitches are less
than 5 mm in X-direction and 3.5
mm in Y-direction)
* 2,700 sti/min max.
5 Stitch length 0.1 mm to 10.0 mm (Adjustable in 0.1 mm step)
6 Feed motion of work clamp foot Intermittent feed (2-shaft drive by stepping motor)
7 Needle bar stroke 41.2 mm 45.7 mm
8 Needle DP×5 #14, #16 DP×17 #14
DP×5 #11 (F, M)
(DP×17 #21 heavy-weight
material)
(DP×17 #21
heavy-weight
material)
9 Work clamp lifting system Stepping motor
10 Lifting (lift) amount of work-
clamp foot
Standard 14 mm, Max. 17 mm
(At the time of needle up by reverse run function)
Max. 13 mm
11 Number of standard patterns 51 patterns 3 patterns 6 patterns 50 patterns
12 Data communication USB, LAN, NFC
13 Wiper system Interlockly with work clamp foot lifter by stepping motor
14 Needle thread clamp device Standard : General 0 Standard : Disable 1
(Caution) 4.
15 Needle thread tension Active tension (Electronic thread tension control mechanism)
16 Hook Standard semi-rotary hook
(2-fold semi-rotary hook)
Standard semi-rotary hook
17 Lubrication Hook : Minute-quantity lubrication
18 Lubricating oil JUKI NEW Defrix oil No.2 (equivalent to ISO VG32) (Lubrication system)
19 Grease
1. Penetration No. 2 lithium grease, 2. Templex N3, 3. JUKI Grease A
(Caution) 2.
20 Memory medium Memory of MAIN board (80 Kbyte)
21 Number of stitches that can be
stored in memory
Max. 20,000 stitches
22 Enlarging/Reducing facility X-Direction, Y-Direction: 20 to 200% each (1% step)
23 Enlarging/Reducing method Pattern enlargement/reduction can be done by increasing/decreasing the stitch length
24 Sewing speed limitation 400 to 3,200 sti/min
(100 sti/min step)
(2,700 sti/min max. for the
2-fold semi-rotary hook)
400 to 3,000 sti/min
(100 sti/min step)
400 to 2,700 sti/min
(100 sti/min step)
25 Material clawing amount ————— Max. 3 mm ————— —————
26 Pattern selector facility Standard pattern : 51, User pattern : 1 to 200, Media pattern : 1 to 999
27 Bobbin thread counter Up/Down method (0 to 9999)
28 Sewing machine motor AC servo motor (Direct-drive system)
29 External dimensions W: 1,200 mm, L: 660 mm, H: 1,100 mm (Standard table stand applied)
30 Weight Machine head : 42 kg, Control box : 5.1 kg
31 Power consumption 250VA (Pattern No.1, 3,200 sti/min, Pause : 2 seconds)
32 Working temperature range 5°C to 35°C
33 Working humidity range 35% to 85% (No dew condensation permissible)
34 Power-supply voltage 3-phase 200V , Rated voltage ±10% , 50/60Hz
35 Noise - Equivalent continuous emission sound pressure level (L
pA
) at the workstation :
A-weighted value of 82 dB; (Includes K
pA
= 2.5 dB); according to ISO 10821- C.6.3 -ISO 11204
GR2 at 3,200 sti/min for the sewing cycle, 1.0s ON (Pattern : No.1).
- Sound power level (L
WA
) ;
A-weighted value of 89 dB; (Includes K
WA
= 2.5 dB); according to ISO 10821- C.6.3 -ISO 3744
GR2 at 3,200 sti/min for the sewing cycle, 1.0s ON (Pattern : No.1).
* Maximum sewing speed should be reduced according to the sewing conditions.
(Caution) 2. Grease type, refer to "10.-(3) Greasing parts".
4. LK-1903NB is set to needle thread clamp prohibited (no motion) with memory switch U035 at the
time of standard delivery.
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