Specifications - JUKI LK-1900A Series Engineer's Manual

1. Specifications

No.
Model name
Item
1 Application
2 Sewing area
3 Button size
4 Max. sewing
speed
5 Stitch length
6 Feed motion of work clamp foot
7 Meddle bar stroke
8 Needle
9 Work clamp lifting
system
10 Lifting (lift) amount
of work-clamp foot
11 Number of standard
patterns
12 Wiper system
13 Needle thread
clamp device
14 Needle thread tension
15 Hook
16 Lubrication
17 Lubricating oil
18 Grease
19 Memory medium
20 Number of stitches that
can be stored in memory
21 Enlarging/Reducing
facility
22 Enlarging/Reducing method
23 Sewing speed limits
24 Material clrawing amount
25 Pattern selector facility
26 Bobbin thread counter
27 Sewing machine motor
28 External dimensions
29 Weight
30 Power consumption
31 Working temperature range
32 Working humidity range
* Maximum sewing speed should be reduced according to the sewing conditions.
(Caution) 1. LK-1903A is set to needle thread clamp prohibited (no motion) with memory switch No. 35 at
the time of standard delivery.
2. Grease type, refer to (3) Greasing parts of [9] Maintenance.
LK-1900A
Bartacking Eyelet buttonhole bartacking
X-Direction (right, left) 40mm; Y-Direction (forward, backward) 30mm
* 3000rpm max. * 3000rpm max.
(*2700rpm fo the
(When sewing pitches are less than 5mm in
2-fold semi-rotary hook)
X-direction and 3.5mm in Y-direction)
intermittent feed (2-shaft drive by stepping motor)
DPX5#11 (F, M)
(DPX17#21 heavy-weight material)
Standard 14mm, Max.17mm (In the reverse-rotation needle-up
function)
50 patterns
Interlockly with work clamp foot lifter by pulse motor
Standard: General 0
Active tension (electronic thread tension control mechanism)
Standard semi-rotary hook
(2-fold semi-rotary hook)
JUKI NEW Defrix oil (equivalent to ISO VG32) (Lubrication system)
1. Penetration No. 2 lithium grease, 2. Templex N2, 3. Juki Grease A, 4. Juki Grease B (Caution)2.
X-Direction, Y-Direction: 20 ~ 200% each (1% step)
Pattern enlargement/reduction can be done by increasing/decreasing the stitch length
450 ~ 3000rpm (100rpm step) (2700rpm max. for the 2-fold semi-rotary hook) 400 ~ 2700rpm (100rpm step)
450W compact AC servomotor (direct-drive system)
W: 1200mm, L: 660mm, H: 1100mm (standard table stand applied)
Machine head (include motor): 42kg, Control box: 16.5kg
Application
LK-1901A LK-1902A
Belt-loop attaching
0.1mm to 10.0mm (adjustable in 0.1mm step)
41.2mm
DPX5 #14
(DPX17#21
heavy-weight material)
Pulse motor
3 patterns 6 patterns
Standard semi-rotary hook
Hook : minute-quantity lubrication
EEP-ROM (128Kbyte) EP-ROM (32Kbyte)
Max. 20,000 stitches
Max. 3mm
Pattern No. designation system (1 ~ 200)
Up/Down method (0~9999)
320W
5°C~35°C
35% ~ 85% (no dew condensation permissible)
– 1 –
LK-1903A
Lock stitch button sewing
Type: Round-shaped, flat button
ø 8 to ø32mm, Standard (ø8 to ø20mm)
* 2700rpm max.
45.7mm
DPX17 #14
Max. 13mm
50 patterns
Standard: Disable 1
(Caution) 1.