Semi-dry head, 2-needle Lockstitch Sewing System

Inspire the Knowledge in Sewing Adjustment.
Epoch-making Sewing Systems in history.
Digital sewing system proposes the production process added with a computerized new value to all the people who engage in production.

Product overview

Product features

  • Active tension mechanism is adopted

    Seam quality is improved by introducing the separately-driven right and left active tension mechanisms.

    • The needle thread tension is automatically corrected according the sewing speed. Consistently seam quality is, therefore, achieved regardless of changes in sewing speed.
    • The needle thread tension is automatically corrected according to the remaining amount of bobbin thread. Seam quality is, therefore, stabilized even when the remaining amount of bobbin thread has reduced.
    • In the case of using the automatic needle thread tension correction feature according to the remaining amount of bobbin thread, the bobbin-thread change notification signal is provided to warn the operator when the remaining amount of bobbin thread has reduced to the predetermined level.

  • Active presser foot mechanism is adopted

    Thanks to the adoption of the active presser foot, the presser foot pressure can now be corrected according to the sewing speed.

  • Multilayered portion detection device (S/G type: Standard equipment, F type: Option)

    The sewing machine is provided as standard with the multilayered portion detection device.
    This device contributes to the realization of stable pitch / well-tensed seam when sewing the multilayered portion.
    Since the sewing correction can be respectively set the multilayered portion run-on portion and for the top of multilayered portion, stitch gathering at the multilayered portion can be improved.

  • Corner stitching capability has been improved (only for the LH-4588C)

    Changeover from the normal stitching to the corner stitching is carried out semi-automatically using the lever while ensuring ease of operation. The operator only needs to input data on the needle gauge/stitching angle through the operation panel. Then, the operator can start the corner stitching only by operating the lever during sewing. Thereafter, the sewing machine automatically changes the sewing mode between the normal stitching and the corner stitching. This means that even the inexperienced operator can produce consistent seam quality while improving productivity. In addition, the problem that the seam inside the corner stitching floats*1 can be solved by the active - tension correction function².

  • Reduction of setup changing time

    • A large hook of 1.8-fold capacity (as compared with the standard size hook) is adopted.
      As a result, frequency of thread changing is reduced in half. This is the world’s first sewing machine not only for jeans and heavy-weight materials, but also for foundation and medium-weight materials that is provided with a large hook. This sewing machine provides further stable seam quality.
    • Motor-controlled horizontal feed is introduced. Stitch pitch can be set on the operation panel.

  • Reduction in time required for adjustment of hook timing

    Hook timing adjustment is required in the case of changing the needle gauge. The time required for this adjustment is reduced. Adoption of the hook timing adjustment mode that can be activated by operating the operation panel as well as new hook driving shaft saddle achieves substantial reduction in workload required at the time of changing the needle gauge. Needle guard of the hook can be adjusted with screw with ease.

  • Data and sewing machine management with IoT ( Internet of Things)

    A "Two-way" contactless communication for parameter adjustment data can be conducted with the sewing machine by a commercial Android terminal.
    This feature allows sewing machines in a sewing line to be uniformly set and status checked quickly, thereby contributing to stabilization in product quality.
    Control panel is standardized with USB ports, promising simplicity in data management and system updates.

  • JUKI Smart APP allows you to send and confirm various data

    In the application, there are items of management setting (terminal registration), sewing machine data (sewing data), problem-solution chart.
    In the problem-solution chart, we can generate production graphs, the availability chart, etc. for each acquired sewing machine data so it can be used for checking the current situation and analyzing it.

  • Large hook (1.8-fold capacity hook) is adopted for foundation type and medium-weight type

    A larger hook (1.8-fold capacity hook) is adopted for foundation type that use thin threads and for medium-weight type. This is the world’s first use of a large hook (1.8-fold capacity hook) for foundation type and medium-weight material type. As a result, the frequency of thread changing is reduced by approximately 40%, the work hours are reduced and the operator’s fatigue is reduced. In addition, the bobbin thread remaining amount correction function of this machine contributes to more consistent seam quality.

Basic performance

  • Operator fatigue reduction

    For the LED hand light, the improved toning function with two additional colors (white / light bulb color) is provided.
    This LED hand light helps reduce the operator's eye fatigue who is engaged in sewing work for a long time.

  • Automatic OFF function of the operation-panel backlight

    The operation-panel light can be turned OFF after a lapse of the preset time. can be automatically turned OFF. (The setting is from 1 to 20 minutes.)

  • Sleep mode (Automatic power-OFF function)

    If no operation is carried out for a predetermined period of time, power supply such as motor can be turned off. (The setting is from 1 to 50 minutes.)

    *These options can be set up on the operation panel.

  • Reduction in power consumption

    Since the LH-4500C is provided with a compact AC servomotor, optimized presser foot lifting control method and the actuator with increased power efficiency, its power consumption is reduced by 30.8 % as compared with the LH-3500A. In addition, the power consumption during standby state is reduced by 50.8 % due to the operation panel screen on which display can be turned OFF.

  • Reduction in noise / vibration

    Noise / vibration produced by the LH-4500C is reduced by various improvements such as the adoption of 1/2 opener system. The LH-4500C provides the work environment that helps reduce the operator's fatigue.

Specification

Model name LH-4578CFF LH-4578CFS LH-4578CFS-7 LH-4588CFS-7 LH-4578CFG-7 LH-4588CFG-7
Specification Full digital
Application Foundation Medium-weight Jeans and heavy-weight materials
Corner stitching
(Organized split needle bar mechanism)		 Not provided provided Not provided provided
Lubricating system Semi-dry / Hook section: Minute-quantity lubrication (tank system)
Feed system Needle feed
Max. sewing speed 3,000 sti/min*
Max. stitch length 4mm 5mm 7mm
Thread take-up lever Slide type
Needle bar stroke 33.4mm
Needle thread tension Independent right and left active tension mechanism
Active presser foot Standard
Lift of the presser foot (max.) 13mm
Multilayered portion detection Option Standard
Knee lifter Option
Reverse feed stitching lever Not provided Standard
Needle DP × 5 #10
(#9~#16)		 DP × 5 #14
(#9~#16)		 DP × 5 #21
(#16~#23)
Thread used #80 - #30

#30 - #3 (for #8 - #3, bobbin thread count should be #20)
Hook Vertical-axis large hook (1.8 - fold )
Free space under the arm 120 mm (height) x 266 mm (distance from machine arm to needle) x 87 mm (height of the jaw section)
Lubricating oil JUKI New Defri x Oil No.1 (Equivalent to ISO VG7)

* sti/min is the abbreviation for "stitches per minute"

When you place orders

Gauge

LH-4578CFF

Guage FEED DOG FEED DOG NEEDLE CLAMP ASM. PRESSER FOOT ASM. SWIVEL GUIDE PRESSER ASM. THROAT PLATE FOR BINDING THROAT PLATE SLIDE PLATE ASM.
Figure
Needle width P/N P/N P/N P/N P/N P/N P/N P/N
Code inch mm
B 1/8 3.2 40232781 40232780 10147650 22627152 22647051 40232772 22625107 40220206
C 5/32 4.0 - - 10147759 - - 40232773 22625206 40220206
D 3/16 4.8 40033564 40035884 10147858 22627350 22647150 40232774 22625305 40220206
E 7/32 5.6 40033565 40035885 10147957 22627459 22647259 40232775 22625404 40220206
F 1/4 6.4 40033566 40035886 10148054 22627558 22647358 40221496 22625503 40220206
G 9/32 7.1 40033567 40035887 10148153 22627657 22647457 40232776 22625602 40220206
H 5/16 7.9 40033568 40035888 10148252 22627756 22647556 40232777 22625701 40220206
K 3/8 9.5 - - 10148351 - - - 22625800 40220206
W 7/16 11.1 - - 10148450 - - - 22625909 40220206
L 1/2 12.7 - - 10148559 - - - 22626006 40222670
M 5/8 15.9 - - 10148658 - - - 22626105 40222670
N 3/4 19.1 - - 10148757 - - - 22626204 40222670
P 7/8 22.2 - - 10148856 - - - 22626303 40222671
Q 1 25.4 - - 10148955 - - - 22626402 40222671
R 1-1/8 28.6 - - 10149052 - - - 22626501 40222671
S 1-1/4 31.8 - - 10149151 - - - 22626600 40222672
T 1-3/8 34.9 - - 10149250 - - - 22626709 40222672
U 1-1/2 38.1 - - 10149359 - - - 22626808 40222672
Remarks - Option Hole Type - For foundation For foundation    
Guage SLIDE PLATE ASM._FRONT SLIDE PLATE ASM._FRONT
Figure
Needle width P/N P/N
Code inch mm
B 1/8 3.2 40042874 23206709
C 5/32 4.0 40042874 23206709
D 3/16 4.8 40042874 23206709
E 7/32 5.6 40042874 23206709
F 1/4 6.4 40042874 23206709
G 9/32 7.1 40042874 23206709
H 5/16 7.9 40042874 23206709
K 3/8 9.5 40042874 23206709
W 7/16 11.1 40042874 23206709
L 1/2 12.7 40042874 23206709
M 5/8 15.9 40042874 23206709
N 3/4 19.1 40042874 23206709
P 7/8 22.2 40042874 23206709
Q 1 25.4 40042874 23206709
R 1-1/8 28.6 40042874 23206709
S 1-1/4 31.8 40042874 23206709
T 1-3/8 34.9 40042874 23206709
U 1-1/2 38.1 40042874 23206709
Remarks    

LH-4578CFG-7

Guage THROAT PLATE NEEDLE CLAMP ASM. FEED DOG FEED DOG PRESSER FOOT ASM._TIP DIVIDED SWIVEL GUIDE PRESSER ASM. SWIVEL GUIDE PRESSER ASM. SLIDE PLATE ASM.
Figure
Needle width P/N P/N P/N P/N P/N P/N P/N P/N
Code inch mm
B 1/8 3.2 40232755 10147650 - 40232778 - 40229469 - 40220206
C 5/32 4.0 40232756 10147759 40232779 - 40071909 - - 40220206
D 3/16 4.8 40232757 10147858 40035891 40025831 22816557 40229461 40095293 40220206
E 7/32 5.6 40232758 10147957 40050009 40025832 22816656 - - 40220206
F 1/4 6.4 40220201 10148054 40035892 40025833 22816755 40229459 40094776 40220206
40220209　* 40220207　*
G 9/32 7.1 40232759 10148153 40050010 40025834 22816854 - - 40220206
H 5/16 7.9 40232760 10148252 40050011 40025835 22816953 - - 40220206
K 3/8 9.5 40232761 10148351 40035893 40025836 22817050 - - 40220206
W 7/16 11.1 40232762 10148450 - 40025837 40033941 - - 40220206
L 1/2 12.7 40232763 10148559 40035894 40025838 22817159 - - 40222670
M 5/8 15.9 40232764 10148658 40071912 40025839 40033945 - - 40222670
N 3/4 19.1 40232765 10148757 40035895 40025840 40033947 - - 40222670
P 7/8 22.2 40232766 10148856 40071913 40025841 40033949 - - 40222671
Q 1 25.4 40232767 10148955 40071914 40025842 40033951 - - 40222671
R 1-1/8 28.6 40232768 10149052 40071915 40025843 40033953 - - 40222671
S 1-1/4 31.8 40232769 10149151 40071916 40025844 40033955 - - 40222672
T 1-3/8 34.9 - 10149250 - - - - - -
U 1-1/2 38.1 - 10149359 - - - - - -
Remarks   Hole Type   Option,*For 3 # thread   Option,* For 3 # thread    
Guage SLIDE PLATE ASM._FRONT SLIDE PLATE ASM._FRONT
Figure
Needle width P/N
Code inch mm
B 1/8 3.2 40042880
C 5/32 4.0 40042880
D 3/16 4.8 40042880
E 7/32 5.6 40042880
F 1/4 6.4 40042880
G 9/32 7.1 40042880
H 5/16 7.9 40042880
K 3/8 9.5 40042880
W 7/16 11.1 40042880
L 1/2 12.7 40042880
M 5/8 15.9 40042880
N 3/4 19.1 40042880
P 7/8 22.2 40042880
Q 1 25.4 40042880
R 1-1/8 28.6 40042880
S 1-1/4 31.8 40042880
T 1-3/8 34.9 -
U 1-1/2 38.1 -
Remarks -

LH-4588CFG-7

Guage FEED DOG FEED DOG THROAT PLATE PRESSER FOOT ASM._TIP DIVIDED SWIVEL GUIDE PRESSER ASM. SWIVEL GUIDE PRESSER ASM. NEEDLE CLAMP ASM._LEFT NEEDLE CLAMP ASM._RIGHT
Figure
Needle width P/N P/N P/N P/N P/N P/N P/N P/N
Code inch mm
B 1/8 3.2 - 40232778 40232755 40035896 40229469 - B1402528BA0A B1402528BA0A
C 5/32 4 40232779 - 40232756 40071909 - - B1402528CA0A B1402528CA0A
D 3/16 4.8 40035891 40025831 40232757 22816557 40229461 40095293 B1402528DALA B1402528DARA
E 7/32 5.6 40050009 40025832 40232758 22816656 - - B1402528EAL B1402528EAR
F 1/4 6.4 40035892 40025833　* 40220201 22816755 40229459 40094776 B1402528FALA B1402528FARA
40220209 40220207　*
G 9/32 7.1 40050010 40025834 40232759 22816854 - - B1402528GAL B1402528GAR
H 5/16 7.9 40050011 40025835 40232760 22816953 - - B1402528HALA B1402528HARA
K 3/8 9.5 40035893 40025836 40232761 22817050 - - B1402528KALA B1402528KARA
L 1/2 12.7 40035894 40025838 40232763 22817159 - - B1402528LAL B1402528LAR
M 5/8 15.9 40071912 40025839 40232764 40033945 - - B1402528MAL B1402528MAR
N 3/4 19.1 40035895 40025840 40232765 40033947 - - B1402528NAL B1402528NAR
P 7/8 22.2 40071913 40025841 40232766 40033949 - - B1402528PAL B1402528PAR
Q 1 25.4 40071914 40025842 40232767 40033951 - - B1402528QAL B1402528QAR
Remarks - Option,* For 3 # thread - - *#3 For 3 # thread - DP5,Hole Type DP5,Hole Type
Guage NEEDLE CLAMP ASM._LEFT NEEDLE CLAMP ASM._RIGHT SLIDE PLATE ASM. SLIDE PLATE ASM._FRONT
Figure
Needle width P/N P/N P/N P/N
Code inch mm
B 1/8 3.2 B1402526BA0A B1402526BA0A 40220206 40042880
C 5/32 4 B1402526CA0A B1402526CA0A 40220206 40042880
D 3/16 4.8 B1402526DALA B1402526DARA 40220206 40042880
E 7/32 5.6 - 10228567 40220206 40042880
F 1/4 6.4 B1402526FALA B1402526FARA 40220206 40042880
G 9/32 7.1 B1402526GALA B1402526GARA 40220206 40042880
H 5/16 7.9 B1402526HALA B1402526HARA 40220206 40042880
K 3/8 9.5 B1402526KALA B1402526KARA 40220206 40042880
L 1/2 12.7 B1402526LALA B1402526LARA 40222670 40042880
M 5/8 15.9 10228856 10228864 40222670 40042880
N 3/4 19.1 10228955 10228963 40222670 40042880
P 7/8 22.2 - - 40222671 40042880
Q 1 25.4 10229151 10229169 40222671 40042880
Remarks Option,For DP17 Option,For DP17 - -