Brother LK3-B434E User manual

LK3−B434E 1/17
2000.7
LK3−B434E
LK3 − B434EX
LK3−B434EX/SF
Electronic Lockstitch Pattern Tacker
Electronic Lockstitch Pattern Tacker
with Stepping Foot
Specifications
Model LK3−B434E LK3−B434EX LK3−B434EX / SF
Application Thin,medium,heavy,
extraheavy materials Medium,extraheavy materials Extraheavymaterials
Stitch formation Singleneedlelockstitch
Max.sewingspeed 2,000rpm(Pitch3mm*1)
Max.patternsize Max. 100×60mm
Feedmechanism R−θintermittentfeed mechanism(pulse−motordrivenmechanism)
Stitchlength 0.1−10.0mm
Max. stitch number 5,000stitches(including4,000stitcheswhichcanbeadded)
Workclamplifter Solenoidtypeorpneumatictype Pneumatic type
Workclampheight Forsolenoid:17mmmax.
Forpneumatic:20mmmax.
(Max.17 mmforinner clampingdevice) 20mmmax.
Hook Shuttlehook(×1.8shuttlehook,optional)
Wiper device Standardequipment
Threadtrimmerdevice Standardequipment
Stepping foot lift amount 18mm(Steppingfootspecificationsonly)
Steppingfootstroke 0, 3−8mm(Steppingfootspecificationsonly)
Safety equipment Built−instoppingmechanism
Datastoragemethod PROM(AnysewingpatterncanbeaddedusingBAS−PC/300)
No.ofstoreddata Upto50patternscan be added. Total number of stitches ofstoreddatawhich canbe
added is within 4,000.
Motor Threephase400Winductionmotor
Weights Machine head: 49kg Control box: 9−19kg (depending
ondestination)
Machinehead:50kg
Controlbox:9−19kg
(dependingondestination)
Powersupply Singlephase220−230V
Threephase220, 380, 400,415V
Max. electric power consumption; 600VA
*1 Because of the R−θfeed, sewing at maximum speed may not be possible for some sewing data, even if the
sewing pitch is set to 3 mm or less.

LK3−B434E 2/17 2000.7
Main use
Patterns up to a maximum size of 100 mm ×60 mm can be sewn.
For plain stitching of small articles, curtain darts, etc.
Two−stage work clamp, light work clamp and inner clamping device can be used (for pneumatic).
For attaching items, sewing labels, etc.
If you want to sew a stitching pattern, you can create your original pattern using the BAS−PC/300.
Consult with your local Brother Sales Office for details.
*If you wish to create sewing patterns or modify the presser foot and feed plate yourself, please order the
LK3−B434EX. (At the time of shipment, the P−ROM for the B434EX will be blank and the presser foot and feed
plate will be unmodified.)

LK3−B434E 3/17
2000.7
Feed mechanism
Ref. No. Part name Part code Q’ty
<ForY=20mmorless>
89 Workclamp,S 153368−001 2
90 Feedbarguidecover,S 153392−001 1
<ForY=34mmorless>
90 Feedbarguidecover,S 153392−001 1
<ForY=49mmorless>
89 Workclamp,S 153368−001 2

LK3−B434E 4/17 2000.7
Feed mechanism

LK3−B434E 5/17
2000.7
Feed mechanism
Ref. No. Part name Part code Q’ty
<For inner clamping device>
46−7Workclamparm assy, 434EREV S42006−009 1
46−7−1Workclamparm,Z34air S41658−009 1
46−7−2Workclamparmlever,FR S10054−001 1
46−7−3Workclamparmlever,RR S10377−101 1
46−7−4Workclamparmlever,FL S10056−001 1
46−7−5Workclamparmlever,RL S10378−101 1
46−7−6Workclamparmlevershaft S10058−001 1
46−7−7Setscrew collarassy S21776−001 1
46−7−7−1Setscrewcollar 139096−001 1
46−7−7−2Setscrew,socket(CP)SM4.37 014680−622 2
46−7−8Thrustring 143591−001 1
46−7−9Retainingring,E5 048050−342 1
46−7−10 Setscrew,socketSM5.95 014760−622 1
46−7−11 Washer,plainM4 025040−232 2
46−7−12 Bolt, socket M4×6 018400−622 2
46−7−13 Workclampcrankassy,434 S42007−001 1
46−7−13−1Workclampcrankholder,A S12634−009 1
46−7−13−2Workclamp holder,B S42008−001 1
46−7−13−3Reverse cylinder base S42019−001 1
46−7−13−4Bolt, socket M3×12 018301−236 2
46−7−13−5Bolt, socket M3×8 018300−836 2
46−7−13−6Workclamp crank,LA S05665−001 1
46−7−13−7Reversegear 154235−001 1
46−7−13−8Reverse rack 154236−001 1
46−7−13−9Washer 146087−001 1
46−7−13−10 Setscrew,SM3.18 149831−101 1
46−7−13−11 Workclampplateholder,L 154237−001 1
46−7−13−12 Washer,plainS3.5 025350−132 1
46−7−13−13 Screw, SM3.57 100242−003 1
46−7−13−14 Reverse rod S42020−001 1
46−7−13−15 Reverse cylinder S12639−001 1
46−7−13−16 Bolt, socket M3×35 S12642−009 2
46−7−13−17 Reverseshaftjoint S42021−001 1
46−7−13−18 Bolt, socket M3×8 018300−836 1
46−7−13−19 Bolt, socket M3×8 018300−836 1
46−7−13−20 Bolt, M5×12 017501−216 1
46−7−13−21 Nut, 2M5 021500−216 1
46−7−13−22 Halfunion,Q4M5 S18415−101 2
46−7−14 Outerworkclamp S42009−001 1
46−7−15 Workclampguideplate,A 153369−001 2
46−7−16 Workclampguideplate,B 153370−001 1
46−7−17 Screw, flat SM3.57 107038−003 6
46−7−18 Cylindersupport S10379−001 1
46−7−19 Air cylinder S10380−201 2
46−7−20 Halfunion,Q4M5 S18415−101 2
46−7−21 Clevis pin S03800−001 2
46−7−22 Retainingring,E4 048040−342 4
46−7−23 Cylinderjoint S03801−101 2
46−7−24 Rollershaft 110168−001 2
46−7−25 Elbow, M5 S41271−000 2
47 Washer,plainM6 025060−232 2
48 Bolt, SM5.95−28×14 S39110−001 2
68 Screw, flat SM318 117291−002 2
69 Positioningplate,L 154252−001 1
70 Positioningplate,R 154253−001 1
71 Screw, pan SM3.57−40×5 062670−512 4
72 Washer,plainL3.5 025350−332 4
73 Washer, spring 2−3.5 028350−242 4
84 Bolt, socket M5×12 018501−222 2

LK3−B434E 6/17 2000.7
Feed mechanism Ref.No. Partname Partcode Q’ty
Blank <Formediummaterials>
76 Workclampblank,434−1R S42030−001 1
77 Workclampblank,434−1L S42031−001 1
80 Feedplateblank,434−1 S42034−001 1
<Forextraheavymaterials>
78 Workclampblank,434−2R S42032−001 1
79 Workclampblank,434−2L S42033−001 1
81 Feedplateblank,434−2 S42035−001 1
<Forinnerclampingdevice>
67 Workclamp blank,A 154256−101 1
85 Feedplate,434R1 S43459−001 1
<Forsteppingfoot>
102 Workclamp,right434ESF −2 S46544−001 1
103 Workclamp,left434ESF−2 S46545−001 1
88 Feedplate,434ESF−2 S44942−001 1

LK3−B434E 7/17
2000.7
Feed mechanism
“Optionparts”<100 ×60>
55−1Workclamp,R 153493−001 1
56−1Workclamp,L 153498−001 1
57−1Feedplate 153503−001 1
<For tongue tacking stitch 51×13 >
55−2Workclamp,right434−519 S23377−001 1
56−2Workclamp,left434−519 S23378−001 1
57−2Feedplate, 434−519 S23379−001 1
<Fortonguetacking stitch, 37×8>
55−3Workclamp, 434−895 S27836−001 1
56−3Workclamp,left434−895 S27837−001 1
57−3Feedplate, 434−895 S27838−001 1

LK3−B434E 8/17 2000.7
Feed mechanism
“Optionpartsofsteppingfoot”<Foronetouchworkclamp>
86 Workclamp,right434ESF S44940−001 1
87 Workclamp,left434SF S44941−001 1
<Onetouchworkclampassy>
101 OTworkclampassy,434EA S43990−001 1
101 OTworkclampassy,434EB S43991−001 1
101 OTworkclampassy,434EC S43992−001 1
Presser foot lifter mechanism
Ref. No. Part name Part code Q’ty
“Optionparts”
58−2Work clamp, XB S45131−001 1
58−3Work clamp, XC S45132−001 1
58−4Work clamp, XD S45133−001 1
58−5Work clamp, XE S45134−001 1
58−6Work clamp, XJ S45135−001 1
61 Spring S33251−001 1

LK3−B434E 9/17
2000.7
Thread wiper mechanism
Ref. No. Part name Part code Q’ty
<Forsolenoidtype>
1Threadwiper drivinglever S38023−001 1
2Threadwipershaft 152822−001 1
3Washer,plainM6.35 025770−232 1
4Retainingring,E4 048040−342 1
5Setscrew,socket(CP)SM4.37 014680−622 1
6Threadwiperrodshaft S38024−001 1
7Threadwiperrodassy S38025−001 1
8Setscrew,socket(CP)SM4.37 014680−622 1
9Retainingring,E6 048060−342 1
10 Washer 116629−001 2
11 Threadwiperarmassy S41284−101 1
12 Retainingring,E3 048030−342 1
13 Oilcap 152827−009 1
14 Setscrew,socket(CP)SM4.76 014710−522 1
15 Fingerguard S00926−201 1
16 Screw, pan SM3.57−40×5 062670−512 1
17 Washer S21875−001 1

LK3−B434E 10/17 2000.7
Thread wiper mechanism
Ref. No. Part name Part code Q’ty
<For pneumatic type, inner clamping device>
14 Setscrew,socket(CP)SM4.76 014710−522 1
17 Washer S21875−001 1
18 Threadwiperconnectrodassy S41656−001 1
19 Threadwiperarmassy S37877−001 1
20 Shoulderscrew,M3.57 153112−001 1
21 Threadwiper,A 156206−001 1
22 Nut,2SM3.57 021670−202 1
23 Washer,plain S41205−001 1
24 Threadwiperspring S41206−001 1
25 Spacerrubber S41207−000 1
26 Plungerpin S25456−001 3
27 Wipersolenoidsetplate S42017−109 1
28 Screw, pan SM4.37−40×8 062680−812 2
29 Bolt, socket M4×6 018400−632 2
30 Washer 100645−003 2
31 Wipersolenoidcover S42018−109 1
32 Screw, truss M4×6 008400−604 2
33 Solenoid cover rid, E S37806−109 1
34 Screw, truss M4×6 008400−604 2
35 Fingerguard S42022−101 1
36 Setscrew,socketSM4.37 153675−001 1
37 Fingerguardsupport S42023−001 1
38 Setscrew,socketSM5.95 014760−622 1
39 Tensionrelease rod,DW S41657−001 1
40 Screw, flat M3.5×6 061350−616 1
41 Oiltube 112669−001 1

LK3−B434E 11/17
2000.7
Thread wiper mechanism
Ref. No. Part name Part code Q’ty
<Forsteppingfoot>
14 Setscrew,socket(CP)SM4.76 014710−522 1
17 Washer S21875−001 1
21 Threadwiper,A 156206−001 1
22 Nut,2SM3.57 021670−202 1
23 Washer,plain S41205−001 1
24 Threadwiperspring S41206−001 1
25 Spacerrubber S41207−000 1
26 Plungerpin S25456−001 3
30 Washer 100645−003 2
33 Solenoid cover rid, E S37806−109 1
34 Screw, truss M4×6 008400−604 2
42 Threadwiperassy,side S42859−001 1
43 Wiperarmassy S42864−001 1
44 Screw, SM3.57×10 S13385−001 1
45 Collar S12668−001 1
46 Shoulderscrew,SM3.18 100659−001 1
47 Nut, 1SM3.18 021660−102 1
48 Spring 159111−001 1
49 Screw, pan SM4.37−405 062680−512 2
50 Solenoidsetting plate,E S37147−109 1
51 Bolt, socket SM4.37×10 018681−022 2
52 Solenoidcover,E S37148−109 1
53 Screw, pan SM4.37−40×5 062680−512 2

LK3−B434E 12/17 2000.7
Air Pressure mechanism
Ref. No. Part name Part code Q’ty
<For pneumatic type, inner clamping device, stepping foot>
4Branch,UY−4S08178−000 2
5Plug, 4 S04897−000 2
6Air tube (L = 930) S28730−000 4
8Wood screw, round M5.5×32 031553−202 2
9Fastening band, 1.9×80 228475−000 3
10 Air tube with connector 149796−001 1
Air Pressure mechanism
Ref. No. Part name Part code Q’ty
<For inner clamping device>
1Air unit assy S42010−001 1
1−1Valvesetplate S42011−001 1
1−2Filter regulator S42012−001 1
1−3Ballvalve,1/4 S09231−000 1
1−4Nipple S09228−000 1
1−5Valveassy,3 S42013−001 1
1−5−1Valve, VQZ1151S −5 S39116−000 3
1−5−2Silencer 140682−001 1
1−5−3Cap,1/8 153274−001 2
1−6Bolt, socket M5×30 018503−036 2
1−7Washer, spring 2−5 028050−246 2
1−8Regulator S12165−000 1
1−9Elbowunion,4M5 S11426−000 2
1−10 Bolt, socket M4×8 018400−836 2
1−11 Washer, spring 2−4 028040−246 2
1−12 Washer,plainM4 025040−236 2
1−13 Air tube (L = 100) S31771−000 1
7Air tube (L = 930) S28730−000 2

LK3−B434E 13/17
2000.7
Air Pressure mechanism
Ref. No. Part name Part code Q’ty
<For pneumatic type>
2Air unit assy S42015−001 1
2−1Valvesetplate S42011−001 1
2−2Filter regulator S42012−001 1
2−3Ballvalve,1/4 S09231−000 1
2−4Nipple S09228−000 1
2−5Valveassy,2 S42016−001 1
2−5−1Valve, VQZ1151S −5 S39116−000 2
2−5−2Silencer 140682−001 1
2−5−3Cap,1/8 153274−001 2
2−6Bolt, socket M5×30 018503−036 2
2−7Washer, spring 2−5 028050−246 2
Air Pressure mechanism
Ref. No. Part name Part code Q’ty
<For pneumatic type>
3Air unit assy S43908−001 1
3−1Valvesetplate S42011−001 1
3−2Filter regulator S42012−001 1
3−3Ballvalve,1/4 S09231−000 1
3−4Nipple S09228−000 1
3−5Valveassy,3 S42013−001 1
3−5−1Valve, VQZ1151S −5 S39116−000 2
3−5−2Silencer 140682−001 1
3−5−3Cap,1/8 153274−001 2
3−6Bolt, socket M5×30 018503−036 2
3−7Washer, spring 2−5 028050−246 2
11 Air tube S46147−000 1
12 Air tube S46148−000 1

LK3−B434E 14/17 2000.7
Power supply equipment
Ref. No. Part name Part code Q’ty
Optionparts
30 OP box assy S38048−009 1
30−1OPPCBassy S38051−000 1
30−1−1Key pad switch, JB−15LMP2 S38056−000 3
30−2OP box harness S38053−000 1
31 Cordholder,5N S00480−000 2
32 Screw, pan SM4.37−40×10 062681−012 3
41 OPbox setplate S42024−009 1
42 Screw, bind SM3.57×12 060671−212 2
43 Screw, pan SM3.57−40×3.5 S39086−001 3

LK3−B434E 15/17
2000.7
Attachment set

LK3−B434E 16/17 2000.7
Attachment set
Ref. No. Part name Part code Q’ty
2Innerclamp deviceset S43910−201 1
2−1Workclampcrankassy,434E S42007−001 1
2−1−1Workclampcrankholder,A S12634−009 1
2−1−2Workclamp holder,B S42008−001 1
2−1−3Reverse cylinder base S42019−001 1
2−1−4Bolt, socket M3×12 018301−236 2
2−1−5Bolt, socket M3×8 018300−836 2
2−1−6Workclamp crank,LA S05665−001 1
2−1−7Reversegear 154235−001 1
2−1−8Reverse rack 154236−001 1
2−1−9Washer 145087−001 1
2−1−10 Setscrew,SM3.18 149831−101 1
2−1−11 Workclampplateholder,L 154237−001 1
2−1−12 Washer,plainS3.5 025350−132 1
2−1−13 Screw, SM3.57 100242−003 1
2−1−14 Reverse rod S42020−001 1
2−1−15 Reverse cylinder S12639−001 1
2−1−16 Bolt, socket M3×35 S12642−009 2
2−1−17 Reverseshaftjoint S42021−001 1
2−1−18 Bolt, socket M3×8 018300−836 1
2−1−19 Bolt, socket M3×8 018300−836 1
2−1−20 Bolt, M5×12 017501−216 1
2−1−21 Nut, 2M5 021500−216 1
2−1−22 Halfunion,Q4M5 S18415−101 2
2−2Outerworkclamp S42009−001 1
2−3Work clamp blank, A 154256−101 1
2−4Screw, flat SM3.18 117291−002 2
2−5Positioningplate,L 154252−001 1
2−6Positioningplate,R 154253−001 1
2−7Screw, pan357−40×5 062670−512 4
2−8Washer,plainL3.5 025350−332 4
2−9Washer, spring 2−3.5 028350−242 4
2−10 Feedplateblank,434R1 S43459−001 1
2−11 Inner clamp valve assy S49155−000 1
2−11−1Valve, VZ3153-N S12160−000 1
2−12 Regulator S12165−000 1
2−13 Elbowunion,4M5 S11426−000 2
2−14 Bolt, socket M4×8 018400−836 2
2−15 Washer, spring 2−4 028040−246 2
2−16 Washer,plainM4 025040−236 2
2−17 Air tube (L = 100) S31771−000 1
2−18 Air tube (L = 930) S28730−000 2
2−19 Fastening bank, 1.9×80 228475−000 3

LK3−B434E 17/17
2000.7
Gauge parts list Use
Part name For generalclothing Fordenim Forsafetybelt
Needleholeplate Needlehole plate,F
S10213−001 Needlehole plate,E S10212−101 Needleholeplate,L S25127−001
Standard Shuttle hook, A w/box
152685−903 Shuttlehook, Bw/box 152687−902
Shuttlehook
boxassy
Large Shuttlehook, LAw/box
S15662−992 Shuttlehook,LBw/box S15663−991
Shuttleracebody Shuttlerace body,A
152682−101 Shuttlerace body,B 152686−101
Spring Threadtake-upspring
145519−001 Threadtake-up spring,B 144588−001
Tensionspring Spring, tension
104525−001 Spring, tension 107606−001 Spring, C; tension S06548−001
Standard Bobbin caseassy, A
159610−201 Bobbin caseassy, B 152690−301
Bobbin case
assy
Large Bobbin caseassy,LA
S15902−401 Bobbin caseassy,LB S15903−401
Standard Bobbin
159613−051 Bobbin, B 154663−001
Bobbin
Large Bobbin,LAN
S44633−001 Bobbin,LB S15666−001
Needlebar threadguide
Threadguide,Bneedlebar
S41222−101
Threadguide,Aneedlebar
152890−001
(Forstepping presserfoot)
S02438−001
Threadguide,Bneedlebar
154664−001
(Forstepping presserfoot)
S02439−001
Needle
Needleassy,DP×5NY(#16)
S37929−416
Needleassy,DP×17
NY(#19)
S37928−419
DP ×17#25
145646−425
Movableknife Movable knifeassy, L
S40934−001 Movable knifeassy S10205−001