JUKI LH-3528A User manual

The LH-3500A Series which improves 2-needle sewing machine's seam quality is now launched.
•LH-3568A-SF-7-WB/CP-18A
Adoption of the direct-drive mechanism promises
energy-saving and increased workability.
Semi-dry head, 2-needle Lockstitch Machine
LH-3500A Series
LH-3528A / LH-3528A-7
LH-3578A / LH-3578A-7
LH-3568A / LH-3568A-7
LH-3588A / LH-3588A-7
(with organized split needle bar)

1
Adoption of the direct-drive mechanism enhances
energy conservation and workability, and
increases the needle's material penetrating force.
Energy-saving
Reduced by 21%
Operability
Material penetrating force
•LH-3568A-SF-7-WB/CP-180A
DD
Direct-drive
sewing machine with
automatic thread trimmer
DD
* The newly-developed control box SC-920A is the first control box to come with a power saving mode
for the sewing machine and to withstand voltage fluctuations, noise and vibration.
21
%
Power consumption
LH-3528-7 LH-3528A-7
Power consumption
*When the sewing machine availability factor is 25%.
Direct-drive
Adoption of a compact motor for the direct-drive mechanism
and the newly developed control box (SC-920A*) decrease
power consumption by approximately 21%.
Increased by 32%
Adoption of a high-torque type 550W motor promises added
material penetrating force when the sewing machine sews
multi-layered parts of heavy-weight material.
Adoption of the direct-drive mechanism improves stop
accuracy and responsiveness, leading to increased working
efficiency.
Reduced
by
LH-3500-7
series LH-3500A-7
series
Material penetrating force
32
%
Increased
by
•LH-3528A-SF-7-WB/CP-180A
3528A-SF-7-WB/CP-180A
35
28A
SF
7
WB/
CP
180
A
0
P
B
7
-
5
•LH-3528A-SF
LH
3
5
H
H-3568A-SF-7-WB/CP-180A
8A SF 7 WB/CP 180A
A
1
C
W
F
8
3
•LH-3568A-S
•LH 3568A
8
3
•
LH-3528A-7
LH-3578A-7
Standard hooks
Large hooks
LH-3568A-7
LH-3588A-7
Standard hooks
Large hooks
With organized split needle bar

2
•LH-3528A-SF
•LH-3568A-SF
All models of the LH-3500A Series are provided with a semi-dry head
to eliminate staining with oil from the frame (the needle bar part).
The sewing machine has been designed to eliminate waste time
and the operator's stress.
Without thread trimmer
A semi-dry head is now installed in all of the
models of the LH-3500A Series.
The "large-hook type" uses a hook 1.7 times
larger than standard.
This increase in size reduces the frequency
of bobbin-thread changes.
The drive method is the V-belt method by means of an externally-mounted motor.
The aforementioned description applies to the LH-3528A-7 (direct-drive sewing machine with automatic thread trimmer. Large-hooks type). Other LH-3500A-7 series (i.e., LH-3568A-7/ 3578A-7/ 3578A-7/ 3588A-7)
and the LH-3500A series (without thread trimmer such as LH-3528A/3568A /3578A / 3588A) are also JUKI ECO PRODUCTS certified products.
* The bobbin and bobbin case shown in the upper
part of the picture are those for the large hook.
The LH-3500A Series has made further progress. This is the cutting-edge model 2-needle
sewing machine which comes with substantially enhanced mechanisms such as the
direct-drive mechanism, semi-dry head, new thread tension control mechanism and
improved oiling system.
The LH-3528A-7 is an eco-friendly product which complies with JUKI ECO PRODUCTS
standards for protecting the environment.
For details of JUKI ECO PRODUCTS, refer to:http://www.juki.co.jp/eco_e/index.html
JUKI ECO PRODUCTS
This sewing machine reduces power consumption by 21% as compared with the conventional models.
The sewing machine satisfies the requirements stipulated in the "Juki Group Green Procurement Guidelines*."
And it certainly complies with the RoHS Directive*.
The LH-3528A-7 uses more common parts than the conventional models. In addition, the total number of parts has been reduced by 4%.
As compared with the conventional models, the new LH-3528A-7 Series has reduced its weight by 11% and its packing material weight by 18%.
The RoHS Directive is an EU Directive limiting the use of 6 hazardous substances (lead, hexavalent chromium, mercury, cadmium, PBB and PBDE) in electrical and electronic equipment.
The Juki Green Procurement Guideline is the voluntarily established criteria to eliminate not only the aforementioned six substances, but also other ones which also adversely affect the environment.
The semi-dry head sewing machine with organized
split needle bars is only available from JUKI.
Unique
to
JUKI
The sewing machine with organized split needle bars is the only sewing machine in the
industry that comes with the semi-dry head. It helps reduce poor-quality products due
to oil stains even in the case of product items which have corner stitching sections.
Standard hooks
Large hooks
Standard hooks
Large hooks
With organized
split needle bar
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oduct which complies with JUKI ECO PRODUCTS
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Gtype
LH-3568A
LH-3588A
LH-3528A
LH-3578A
*LH-3578A/3578A-7・LH-3588A/3588A-7

3
The needle tension controller comes in two different mechanisms
according to the type of sewing machine. For the A and F types,
seam quality free from puckering and irregular stitches is
promised. For the S and G types, the sewing range has been
broadened to produce well-tensed seams even when thick thread
is used.
Two different kinds of needle bar thread guides (needle clamps),
the wire type and round-hole type, have been developed
according to the type of sewing machine. The wire-type needle
bar thread guide has been adopted for the A and F types which
require the sewing capability to sew light-weight materials and
foundations without puckering or irregular stitches. The round-hole
type needle bar thread guide has been adopted for the S and G
types which sew materials requiring well-tensed seams. In
addition, the G type is provided as standard with the presser foot
with guide which is effective for the topstitching process.
The best-suited thread tension is achieved
according to the sewing specifications
Our direct-acting thread trimmer mechanism, which spreads
thread without fail, has been further improved. The thread trimmer
trims the needle thread and bobbin thread without fail even when
thick thread is used. In addition, the thread trimmer's bobbin
thread retaining force has been increased.
Highly reliable thread-trimming mechanism
The presser foot can be lifted by a minute amount by adjusting
the eccentric pin located in the presser lifter lever section.
When sewing shaggy and elastic fabrics, the load applied to the
material is reduced by slightly lifting the presser foot. Materials are
handled more easily and are finished without sacrificing the
inherent texture of the material.
Material-friendly micro-lifter mechanism
◎ Wire type and round-hole type needle bar
thread guide
Two different types of thread tension controllers
have been developed.
Standard type thread tension controllerIndependent right and left needles type
thread tension controller
Soft-seams using
the wire type needle
bar thread guide
Well-tensed seams
using the round-hole
needle bar thread guide
S and G typeA and F type S and G typeA and F type
Unique
to
JUKI
A thread tension control mechanism has been developed for each type of sewing machine in
order to achieve the best-suited thread tension for its purpose. The sewing machine for jeans
and heavy-weight materials (G type) produces well-tensed seams by the optimization of the feed
mechanism. Furthermore, the G type machine comes with the new thread trimmer mechanism
which promises increased reliability.
Responsiveness to materials has been thoroughly
investigated to improve "seam" quality.

Hook part
Oiling
Oil
tank
Circulation filter
4
Two selectable new-method
oiling mechanisms
The oil dropped from the hook and its surrounding sections into
the under-cover is filtered to remove dirt and dust and is then
returned to the oil tank. This method saves the effort of oiling and
reduces oil consumption.
The oil dropped from the hook and its surrounding sections into
the under-cover is not returned to the oil tank, but only clean oil is
supplied to the hook at all times.
The feed method can be easily changed over
The location of the oil tank has been changed to the inside of the
sewing machine through our re-investigation of the lubricating
method. As a result, space is secured under the bed surface to
facilitate changeover of the feed method between the "needle
feed" and "bottom feed" and changeover of the feed timing
(re-placement of the timing belt).
For the process of sewing light-weight materials or the like,
puckering has to be prevented. In this case, the feed method can
be changed over to the bottom feed through an easy adjustment
and change of the gauge. In comparison with the needle feed, the
bottom feed works to prevent puckering and enables sewing with
a lower thread tension.
Eco-oil method
Clean oil method
The oiling method can be changed over as desired.
Gauge for tape attaching (corresponding attachment classification code "T" for tape attaching; LH-3528A-F: Only the sewing machine for foundation)
Throat plate for tape attaching
The throat plate is designed with a
hollow on the side facing the
operator. This hollow
helps smooth
the feeding of tape.
Gauge for tape attaching (corresponding attachment classification code "T" for tape attaching; LH-3528A-F: Only the sewing machine for
foundation) The sewing machine is provided as standard with the gauge for tape attaching which is best-suited to the process for attaching tape to
foundation. The gauge for tape attaching consists of the throat plate for tape attaching, presser foot with guide and bed slide. The sewing machine
with the standard gauge can be changed to the tape attaching type sewing machine by changing the gauge with the gauge for tape attaching.
This reduces the
height when the
tape-attaching
holder is fixed on
the machine.
The LH-3528A supports, as standard, the feed type change-over function between
the needle feed and bottom feed.the feed type change-over function between the
needle feed and bottom feed. Contact JUKI for information on the models other than the LH-3528A.
Needle
Needle-feed
Changeover
Bottom-feed
Presserfoot Needle
The internal mechanism of the sewing machine has been thoroughly re-investigated to achieve
further improvement of maintainability and workability. JUKI does not cut corners on the quality
of those parts which are normally invisible, such as in the internal section of the sewing
machine. This represents JUKI's craftsmanship.
Changeover between the needle feed and
bottom feed
◎
Eco-oil method (circulation type)
Clean oil method
Dry
Oiling
Unique
to
JUKI
Guide presser Slide plate (this side) :
Part No. 23206709
Part No.
Guide
inch mm Throat plate for
tape attaching
Guide presser
1/8
3/16
7/32
1/4
9/32
5/16
3.2
4.8
5.6
6.4
7.1
7.9
22628002
22628200
22628309
22628408
22628507
22628606
22647051
22647150
22647259
22647358
22647457
22647556

5
Output control function
Operation measuring function
Bobbin counter function
The production support function actually consists of three different
functions (six different modes), which are the output control
function, operation measuring function and bobbin counter
function. Each with its own production support effect.
An appropriate function (mode) can be selected as required.
The parameter setting can be done on the panel located on the
top of the sewing machine, thereby helping reduce operator
fatigue during setup changing.
• Target No. of products display mode
Under the target No. of products display mode, the target number
of products and the actual number of products produced
according to the work hours are displayed.
• Target-actual result difference display mode
In the under target-actual result difference display mode, the
difference between the target number of products and the actual
number of products produced is displayed.
Since operators are able to work while checking their actual
number of products on the panel at all times, they can strengthen
their sense of purpose of achieving the target, thereby increasing
productivity. Operators can visually check the progress of their
work in real time, leading to the early detection of any problems
and the execution of early corrective measures.
• Sewing machine availability display mode
Under the sewing machine availability display mode, the average
sewing machine availability in the previous cycle and the current
cycle is displayed.
• Pitch time display mode
Under the pitch time display mode, the average process
machining time in the previous cycle and the current cycle is
displayed.
• Average speed of stitch display mode
Under the average speed of stitch display mode, the accumulated
speed of stitch in the previous cycle and the current cycle is
displayed.
Since the sewing machine operation status, pitch time (process
machining time), can be automatically measured, process analysis,
line arrangement and confirmation of facility efficiency can be
obtained with ease. As a result, the man-hours required for
production control are reduced.
• Bobbin counter display mode
The operator is notified that the bobbin needs to be replaced
before the bobbin thread runs out.
Since the operator is notified of the time to replace the bobbin, the
operator is no longer required to carry out the re-sewing of seams
sewn without bobbin thread, thereby increasing working efficiency.
In addition, the operator carries out his/her work under a
stress-free environment without worrying about needle-hole
damage to the material, which is likely to be made when sewing
without bobbin thread.
Three different functions
(Six different modes)
Output control function
Operation
measuring function
Bobbin
counter function
CP-18A CP-180A
The operation panels CP-18A and CP-180A are provided with a production support function.
Production support function

6
With automatic thread trimmer
Control box
Without automatic thread trimmer
Operation panel
WHEN YOU PLACE ORDERS
Feed system
Needle-feed
Bottom-feed
Code
A
B*
Machine head
Standard hooks
Organized split needle bar,
standard hooks
Code
28
68
Large hooks
Organized split needle bar,
large hooks
78
88
Seam application
Medium-weight
Jeans and heavy-weight
Code
S
G
Auto-lifter
Not provided
Provided
Code
AK135
Wiper
Provided
One-touch type reverse feed
Provided
Code
WB
Wiper and one-touch type reverse feed
Wiper
Notprovided
Notprovided
One-touch type reverse feed
Notprovided
Provided
Code
00
0B*
Attachment
Standard
For tape attaching
Code
S
T*
Seam
application
Light-weight
Foundation
Medium-weight
Jeans and
heavy-weight
Code
LH-3528A LH-3568A
A
F
S
G
–
–
S
G
LH-3578A
–
–
–
G
LH-3588A
–
–
–
G
* Feed system "B" (bottom feed) is applicable to all
models LH-3528A-A (for light-weight materials)
and LH-3528A-F (for foundation) is only applicable
to the needle gauge system "B", "D" or "F".
* Only the seam application "G" is available for the
LH-3578A-7 and LH-3588A-7.
* Refer to the Parts List for details.
* The AK device is applicable only when "0B" is
selected from the classification menu by the wiper
and one-touch type reverse feed mechanism.
* "T" represents the presser foot with guide, throat
plate of sewing tape and bed slide for sewing tape,
and only applies to the LH-3528A-F (for foundation).
* "0B" is only applicable to the LH-3528A-F (for foundation).
* When the "0B" is selected, the sewing machine comes with the direct-drive motor.
The model designations beyond the
classification by feed type only apply to the LH-3528A.
: A gauge designed for factory-installation at delivery.
: A gauge available as a part.
: A gauge designed for factory-installation at delivery.
: A gauge designed for factory-installation to the bottom feed model at delivery.
: A gauge available as a part.
Auto-lifter
Not provided
Provided
Code
AK135*
Power supply
Single-phase 100〜120V
3-phase 200〜240V
Single-phase 200〜240V (for General Export)
Single-phase 200〜240V (for CE)
Single-phase 200〜240V (for China)
Code
S
D
K
N
U
LH35 A
LH35
SC920A
CP180A
CP18A
A 7WB
Please note when placing orders, that the model name should be written as follows:
The needle gauge up to 47.0mm is applicable.
Machine head
Standard hooks
Organized split needle
bar, standard hooks
Code
28
68
Large hooks
Organized split needle
bar, large hooks
78
88
* Refer to the Parts List for details.
•
To order, please contact your nearest JUKI distributor.
A
B
C
D
E
F
G
H
K
W
L
M
N
P
Q
R
S
T
U
3/32 2.4 
1/8 3.2 △ △ △ △ △ △
5/32 4.0 △ △ △ △ △ △
3/16 4.8 ○ ○ ○ ○ ○ ○
7/32 5.6 △ △ ○ △ △ △
1/4 6.4 ○ ○ ○ ○ ○ ○
9/32 7.1 △ △ △ △ △ △
5/16 7.9 △ △ △  △ △
3/8 9.5 ○ △ △ △ △ △
7/16 11.1 △ △   △  
1/2 12.7 △ △ △ △ △ △
5/8 15.9 △ △ △ △ △ △
3/4 19.1 △ △ △ △ △ △
7/8 22.2 △ △ △ △ △ △
 1 25.4 △ △ △ △ △ △
1-1/8 28.6 △ △   △
1-1/4 31.8 △ △   △
1-3/8 34.9  
1-1/2 38.1   
inch
Needle gauge
LH-3528A-7 LH-3568A-7 LH-3578A-7 LH-3588A-7
Seam application
Code
mm S G S G G G
A
B
C
D
E
F
G
H
K
W
L
M
N
P
Q
R
S
T
U
3/32 2.4 △
1/8 3.2○○△△△△ △ △
5/32 4.0 △  △ △ △ △ △ △
3/16 4.8 ○ ○ ○ ○ ○ ○ ○ ○
7/32 5.6  ○ △ △ ○ △ △ △
1/4 6.4○○○○○○ ○ ○
9/32 7.1 △ ○ △ △ △ △ △ △
5/16 7.9 △ ○ ○ △ △△  △ △
3/8 9.5 △  ○ △ ○ △ △ △
7/16 11.1   △ △  △ △ △
1/2 12.7 △  △ △ △ △ △ △
5/8 15.9   △ △ △ △ △ △
3/4 19.1 △  △ △ △ △ △ △
7/8 22.2 ○  △ △ △ △ △ △
 1 25.4 ○  ○ △ △ △ △ △
1-1/8 28.6 △  △ △   △ 
1-1/4 31.8 △  △ △   △
1-3/8 34.9   △ △   △
1-1/2 38.1   △ △   △

inch
Needle gauge LH-3528A
LH-3568A LH-3578A LH-3588A
Seam application
Code
mm A F S G S G G G

Outside diameter (mm)
75
70
65
60
Part No.
MTKP0070000
MTKP0065000
MTKP0060000
MTKP0055000
Motor pulley Belt
Length (inch)
43
42
Part No.
MTJVM00430A
MTJVM00420A
Sewing speed (sti//min)
50Hz
3,000
2,790
2,580
2,370
60Hz
-
-
3,000
2,740
Model name
Application
Hook
Lubrication
Max. sewing speed
Feed system
Max. stitch length
Needle bar stroke
Thread take-up
Tensioner
Thread winder
Lift of the presser foot
Oiling method
Tank capacity
Lubricating oil
Needle
5mm
Not provided Not providedProvided as standard Provided as
standard
Vertical axis regular hook
Vertical axis 1.7 times large hook
Independent right and
left needles type (lockstitch type)
Standard type
Semi-dry / hook section: minute-quantity lubrication (tank system)
3,000sti/min*
120mm (H) × 266mm (W) × 87mm (height of jaw part)
33.4mm
Slide type
Built-in the machine head
7mm (by hand), 13mm (by knee)
Eco-oil method (circulation type), Clean oil method
280cm3
JUKI New Defrix Oil No.1 (equivalent to ISO VG7)
LH-3528A/3568A/3578A/3588A : 718mm (H) ×341mm (W) ×744mm (L)
LH-3528A-7/3568A-7/3578A-7/3588A-7 : 768mm (H) ×341mm (W) ×744mm (L)
*"sti/min" stands for "Stitches per Minute."
Changeover between the needle feed and bottom feed Needle-feed
LH-3528A-A
Light-weight
5mm
DP×5(#9)
#9~#16
LH-3528A-F
Foundation
4mm
DP×5(#10)
#9~#16
LH-3578A-G
DP×5(#21)
#16~#23
LH-3588A-G
DP×5(#21)
#16~#23
LH-3528A-S
Medium-
weight
DP×5(#14)
#9~#16
LH-3568A-S
Medium-
weight
DP×5(#14)
#9~#16
LH-3528A-G
Jeans and
heavy-weight
DP×5(#21)
#16~#23
LH-3568A-G
Jeans and
heavy-weight
Jeans and
heavy-weight
Jeans and
heavy-weight
DP×5(#21)
#16~#23
The table shown above represents the case of the clutch motor with an output power of 400W (2P).
The V belt should be used with the clutch motor.
Distance from needle
to machine arm
Organized split needle
bar mechanism
Outside dimensions
of package (mm)
Machine head weight
(including the package)
SPECIFICATIONS
MOTOR BELT SELECTION TABLE (for sewing machines without thread trimmer)
LH-3528A/3568A/3578A/3588A：48kg
LH-3528A-7/3568A-7/3578A-7/3588A-7: 61kg (with AK: 63kg)
LH-3528A-F-0B : 50kg (with AK: 63kg)
JULY, 2012 Printed in Japan(C)
SEWING MACHINERY BUSINESS UNIT
2-11-1, TSURUMAKI, TAMA-SHI,
TOKYO 206-8551, JAPAN
PHONE : [phone]
FAX : [phone]
http://www.juki.com
✽ Specifications and appearance are subject to change without prior notice for improvement.
✽ Read the instruction manual before putting the machine into service to ensure safety.
✽ This catalogue prints with environment-friendly soyink on recycle paper.
Juki Corporation operates an environmental management system
to promote and conduct the following as the company engages in
the research, development, design, sales, distribution,and
maintenance of industrial sewing machines, household sewing
machines, industrial robots, etc., and in the provision of sales and
maintenance services for data entry systems:
(1) The development of products and engineering processes
that are safe to the environment
(2) Green procurement and green purchasing
(3)
Energy conservation (reduction in carbon-dioxide emissions)
(4) Resource saving (reduction of papers purchased, etc.)
(5) Reduction and recycling of waste
(6) Improvement of logistics efficiency (modal shift and
improvement of packaging, packing, etc.)