Brother LK3-B438E MKII User manual

LK3−B438E Mark II 1/9
2000.7
LK3-B438EMark II
Electronic Lockstitch Button Sewer
Specifications
Stitch formation Single needle lock stitch
Max. sewing speed 2,500 rpm
Max. pattern size (X ×Y) 0 –6.4 ×0 −6.4 mm
Needle TQ ×1 #12
Dimensions of button that can be sewn Outer diameter of button 8 –30 mm
(Use the optional button clamp B for diameters of 20 mm or more.)
Space between the button holes 0 –6.4 mm
Button clamp height Max. 13 mm
Feed mechanism R−θintermittent feed mechanism (pulse−motor driven mechanism)
Stitch length 0.1−10.0 mm
No. of stitches Variable (13, 15, 17, 19, 20, 22, 23, 24, 26, 27, 28, 30, 32, 34, 38 stitches preset)
Max. stitch number 20,000 stitches (including 10,000 stitches which can be added)
Work clamp lifter Solenoid type
Hook Shuttle hook
Wiper device Standard equipment
Thread trimmer device Standard equipment
Thread take-up device Standard equipment
Data storage method PROM (Any sewing pattern can be added using BAS−PC/300)
No. of user programs 16
No. of cycle programs 4
No. of stored data 49 sewing patterns are set already.
(Up to 100 patterns can be added. Total number of stitches of stored data which can
be added is within 10,000.)
Motor Three phase 400W induction motor
Weights Machine head: 47 kg Operation panel: 0.6 kg
Control box: 9 −19 kg (depending on destination)
Power supply Single phase 110, 220−230, 240V Three phase 220, 380, 400V
Max. electric power consumption; 600VA

LK3−B438E Mark II 2/92000.7
LK-B438E Mark II List of pre-programmed patterns
Sewing patterns are limited as shown in the table below.
(Any program is available as long as the needle drops down in the hole of the button.)
Program
No. Sewing pattern No.of threads
No.of
crossover
stitches
No.of
stitches
Sewing
size
X-Y
(mm)
Program
No. Sewing pattern No.of threads
No.of
crossover
stitches
No.of
stitches
Sewing
size
X-Y
(mm)
1 6 -13 18 6 - 6 120
2 8 -15 19 8 - 8 124
310 -17 31 10- 10 128
412 -19 45 12- 12 132
5 *1 16 -23 20*3 6 - 6 026
6 *1 20 -27
3.4 ×0
32*3 8 - 8 030
7 *2 6-13 33*3 10 - 10 034
3.4 ×3.4
23*2 10 -17 21 *2 6 - 6 120
8 *2 12 -19
0 ×3.4
34*2 10 - 10 128
9 *2 5- 5 -5 -22 22 *2 *3 6 - 6 026
24*2 7 -7 - 7 -28 35 *2*3 10- 10 034
2.4 ×3.4
25*2 5 -5 - 5 -22 46 6 - 6 120
26*2 7 -7 - 7 -28
2.6 ×2.4
47 8 - 8 124
10 6 - 6 120 48 10- 10 128
11 8 - 8 124 49 12- 12 132
3.4 ×3.4
12 8 - 8 326 Thefollowing programsrequire thesolenoid threadwiper (OP).
13 10- 10 128 36 6 - 6 026
27 12- 12 132 37 8 - 8 030
14*3 6 - 6 026 38 10- 10 034
28*3 8 - 8 030 39 12- 12 038
15*3 10 - 10 034 40 6 - 6 026
29*3 12 - 12 038 41 8 - 8 030
16 6 - 5 119 42 10 -10 034
3.4 ×3.4
17 8 - 7 123 43*2 6 - 6 026
30 10- 9 127
3.4 ×3.4
44*2 10 - 10 034 2.4 ×3.4
*1. Check that the button hole diameter is 2mm or greater before using the programs.
*2. Do not use the button lifter spring.
*3. Thread is trimmed after sewing of one side is completed, because there is no crossover thread to be sewn.
To continue sewing to the end, keep the foot switch depressed until sewing of the other side starts, or press the foot switch
oncemore after sewing ofthe first side iscompleted.

LK3−B438E Mark II 3/9
2000.7
Optional device
Button clamp (20 mm or more)
Ref. No. Part name Part code Q’ty
190 Button clamp assy, B S03634-001 1
190-1 Button clamp bracket S03464-101 1
190-2 Button clamp, LB S03650-001 1
190-3 Spring, plate ;L S11079-001 1
190-4 Button clamp, RB S03649-001 1
190-5 Spring, plate ;R S11080-001 1
190-6 Pin 115156-001 2
190-7 Pin, spring roll AW2.5 047250-642 2
190-8 Screw, pan SM4.37 –40 ×5 062680-512 2
190-9 Shoulder screw, SM4.76 115158-001 2
190-10 Button clamp assy, M S03467-001 1
190-11 Screw, M4.37 S03468-001 1
190-12 Nut, SM4.37 S03657-001 1
190-13 Spring, plate 115163-001 1
190-14 Button clamp adjust plate 115164-001 1
190-15 Shoulder screw, M4.37 115165-001 1
190-16 Shoulder screw, SM4.37 115166-001 1
190-17 Button clamp plate cam S03659-001 1
190-18 Screw, pan SM4.37 –40 ×8 062680-812 2

LK3−B438E Mark II 4/92000.7
Optional device
Solenoid thread wiper

LK3−B438E Mark II 5/9
2000.7
Ref. No. Part name Part code Q’ty
20 Thread wiper solenoid assy S49615-009 1
20-1 Thread wiper connect rod assy S41656-001 1
20-2 Thread wiper arm assy S44600-001 1
20-3 Shoulder screw, SM3.57 153112-001 1
20-4 Nut, 2 SM3.57 021670-202 1
20-5 Solenoid box assy S49616-009 1
20-5-1 Thread wiper solenoid assy S49619-001 1
20-5-1-1 Plunger rubber S41204-050 1
20-5-2 Screw, pan M3 ×6 062300-612 4
20-5-3 Washer, plain S41205-001 1
20-5-4 Spring, t-wiper S41206-001 1
20-5-5 Plunger pin S25456-001 2
20-5-6 Setting plate, W-sol. S42017-109 1
20-5-7 EM-lock switch harness assy S49482-000 1
20-5-7-1 Switch, AVS311N S32335-000 1
20-5-7-2 EM-switch harness S49466-000 1
20-5-8 EM-switch spacer, 3 S37057-001 1
20-5-9 Solenoid cover, W S42018-109 1
20-5-10 Screw, truss M4 ×6 008400-604 2
20-5-11 Solenoid cover lid, E S37806-109 1
20-5-12 Screw, truss M4 ×6 008400-604 2
20-5-13 Washer, plain 13 115007-001 1
20-6 Spacer rubber S41207-000 1
20-7 Plunger pin S25456-001 1
20-8 Bolt, socket M4 ×6 018400-632 2
20-9 Washer 100645-003 2
20-10 Tension release rod, DW S41657-001 1
20-11 Screw, flat M3.5 ×6 061350-616 1
20-12 Screw, pan SM4.37-40 ×8 062680-812 2
20-13 Thread wiper, A 156206-001 1
20-14 Connector S49947-000 1
20-15 Screw, bind SM3.57-40 ×6 060670-612 3
20-16 Cord holder, 7N 149287-000 3
20-17 Rubber cap, 15.5 104449-009 1

LK3−B438E Mark II 6/92000.7
Optional device
Auxiliary device

LK3−B438E Mark II 7/9
2000.7
Ref. No. Part name Part code Q’ty
1Button spacer set 156440-001 1
1-1 Spacer rod 156441-001 1
1-2 Washer 122257-001 2
1-3 Spacer 156443-001 1
1-4 Screw, SM3.57 129984-003 1
1-5 Washer, plain 116662-004 2
1-6 Bolt, SM4.37 154835-001 2
1-7 Spacer, B 156342-001 1
1-8 Set screw, socket (CP) SM4.37 014680-422 1
2Button spacer set, 438 S13183-101 1
2-1 Button spacer assy S09662-101 1
2-1-1 Bracket S09663-101 1
2-1-2 Scale S09658-001 1
2-1-3 Bolt, SM4.37-40 ×7 S09686-001 1
2-1-4 Washer S02745-001 1
2-1-5 Positioning setting plate, A S09659-001 1
2-1-6 Positioning setting plate, B S09660-001 1
2-1-7 Shoulder screw, SM4.37 115166-001 1
2-2 Screw, oval SM4.37 ×10 S01702-001 2
2-3 Feed plate for spacer S13184-001 1
2-4 Screw, w / socket SM4.37 153057-101 1
3Gauge assy, 438E S42902-001 1
3-1 H –position standard plate S42903-001 1
3-2 Screw, w / socket SM4.37 S10352-101 2
4Motor cover S41507-009 1
5Wood screw, round M3.5 ×16 032361-602 4
8Shank device set, 438E S42098-009 1
8-1 Shank button clamp bracket assy 142689-309 1
8-1-1 Shank button clamp bracket 154684-009 1
8-1-2 Button clamp, A 142677-101 1
8-1-3 Button clamp, B 142678-101 1
8-1-4 Screw, pan SM3.57-40 ×8 062670-812 1
8-1-5 Washer 102707-003 1
8-1-6 Button presser stud 142681-001 1
8-1-7 Spring 154685-001 1
8-1-8 Set screw collar 142706-001 2
8-1-9 Screw, pan SM3.57-40 ×7 062670-712 2
8-1-10 Button presser arm 154686-001 1
8-1-11 Set screw, (CP) SM4.76 013719-412 1
8-1-12 Button presser 142680-001 1
8-1-13 Set screw, (CP) SM4.37-40 ×8 120990-001 1
8-2 Button presser arm lifter 154695-001 1
8-3 Button presser arm lifter stud 154696-001 1
8-4 Set screw, socket (CP) SM4.37 014680-422 1
8-5 Feed plate base 154697-001 1
8-6 Feed plate, ;shank button 156336-101 1
8-7 Screw, SM4.76 154713-001 2
8-8 Nut, 2 SM4.76 021710-212 2
8-9 Washer, plain SM4.76 025710-232 2
8-10 Cloth receiver, S 142686-101 1
8-11 Screw, bind SM3.57-40 ×5 060705-512 1
8-12 Movable knife assy, LL S41508-001 1
8-13 Needle assy, TQ ×7 (#16) 115040-116 1
8-14 Shuttle race thread guide S41510-001 1
8-15 Needle hole plate, E S10212-101 1
8-16 Thread guide, B ;Needle bar S41222-101 1
8-17 Screw, w/socket SM4.37 153057-101 1
10 Cloth receiver, M 142687-101 1

LK3−B438E Mark II 8/92000.7
Gauge parts list
Feed plate 159971-001 145665-101 154166-101
Standard
153833-101 153870-101
* Two screws s/socket SM4.37 (153057-101) are used for setting.
Feed plate S49950-001 S49951-001 S49952-001
S49953-001 S49954-001
* One screws w/socket SM4.37 (S49955-001)and one screw s/socket SM4.37 (153057-101) are required for setting.
Please order them.

LK3−B438E Mark II 9/9
2000.7
Spring for making space between button and material
Ref. No. Part name Partcode Q’ty
110 Presser plate 153837-001 1
111 Spring, 0.8
<φ0.8> 153839-001 1
111 Spring, 1.2
<φ1.2> 153871-001 1
113 Bolt, SM3.57 144075-001 2
114 Washer, plain S3.5 025350-132 2
Spacer, ;Button clamp
AL S52071-001 BL S52072-001 CL S52073-001 DL S52074-001
AR S52075-001 BR S52076-001 CR S52077-001 DR S52078-001
Standard
Needle hole plate
HS S40917-001 HT S40925-001 HU S52079-001 HV S52080-001
HW S52081-001 HX S52082-001
Standard