JUKI LH-3126F Overview

The LH-3126F is the most optimally suited model for sewing brassieres.
With its various capabilities such as topstitching and tape-attachment
on the peripheries of bra cups, the machine flexibly responds to a wider
range of sewing requirements for sewing brassieres.

2-needle, Needle-feed/Bottom-feed, Lockstitch Machine
For Foundation

LH-3126F

● Lining tape attachment folder (M060) is optionally available.

Operating noise of the machine
is dramatically reduced

The strokes of the right and
left thread take-up are
separately adjustable

The adjustment range of the
needle thread tension is widened

●The operating noise produced by the
hook and thread take-up lever is
substantially reduced.
With its decreased noise level and
improved sound quality, the machine
offers a comfortable work environment
that reduces operator fatigue.

●The improved opener reduces the
impact against the bobbin. By reducing
variations of bobbin thread tension
caused by the opener, irregular stitches
are eliminated.

The machine has two thread take-up guides,
one for the right thread and the other for the
left thread. As a result, the strokes of the
right and left thread take-ups are separately
adjustable. When the right and left portions
of the material differ in thickness, the
strokes of the thread take-up can be
accurately adjusted for the right and left
threads. With this capability, the machine
delivers consistently improved seam quality.

●The needle tension controller has been
changed to the 1-needle, lockstitch type.
The style of the thread take-up spring
has been modified not only to allow the
spring to work more effectively, but also
to widen the needle thread adjustment
range compared with that possible with
the conventional thread take-up spring.
The thread tension can be easily
adjusted when changing the material to
be sewn. In addition, the thread tension
is further stabilized even when sewing
under a lower thread tension.

●

To downsize the design, the thread take-

up spring is integrated with the tension­regulating knob. As a result, these parts
project out less from the machine, opening
up a clearer view of the area around the
needle entry for easier operation. In
addition, the machine offers easier
threading of the needle as compared with
the conventional machine head.

●One available model is equipped with a newly developed a hook
that uses a non-rotational bobbin for the vertical-axis hook. For
the hook with a non-rotational bobbin, the bobbin is secured in
the bobbin case and does not rotate as the bobbin thread feeds.
This prevents variations in thread tension caused by changes in
the amount of remaining bobbin thread and idling of the bobbin.
With this hook and bobbin, the machine is able to use the full
amount of bobbin thread and sew consistent with a lower thread
tension compared with that used with the conventional hook.

●The machine type provided with a latch hook is also available.
Select the type that fits your purpose.
(The latch hook is exclusively designed for the LH-3126F.
However, the conventional bobbin can be used with the latch
hook.)

Hook with a non-rotational bobbin Specific latch hook

Hook HookBobbin case Bobbin Bobbin

The machine is equipped with a hook that uses a non-rotational bobbin

Height and inclination of the
feed dog can be adjusted

The feed method can be changed
over between the needle-feed
and the bottom-feed

Upgraded maintainability

Both the height and inclination of the
feed dog are easily adjustable. Adjust
the feed dog according to sewing
conditions such as the specification,
process, and material to be sewn.

Through a simple adjustment of the
machine and replacement of the gauge, the
feed method can be changed over between
the needle-feed and bottom-feed types.
When the bottom-feed method is selected,
the needle entry position can be adjusted
(in the feeding direction) using the needle­feed/bottom-feed change-over mechanism.
This allows the machine to flexibly adapt to
commercially available gauges.

●When replacing the gauge, the screw
in the hook-driving shaft saddle can be
tightened diagonally from above to
ensure safety and operability.

●The hook is lubricated automatically
when adjusting the oil discharge. This
helps stabilize and regulate amount of
oil in the hook more effectively.

■ WHEN YOU PLACE ORDERS

Please note when placing orders, that the model name should be written as follows:

● To order, please contact your nearest JUKI distributor.

Needle

gauge

mm

3.2

4.8

6.4

7.1

7.9

Feed

Needle-feed
Bottom-feed

✽

inch

1/8

3/16

1/4
9/32
5/16

B
D
F
G
H

Code

Code

Code

1

P

4

✽

Attachment

Combination availability table

C

Automatic reverse

feed function

Automatic reverse

feed function

SC-910
SC-800

Standard throat plate, standard slide plate,
standard presser foot

Pedal switch type

(AK89)

✽

Not provided
Provided

Code

A
B

00

0B

Hook

Latch hook
Hook with

non-rotational
bobbin

Throat plate for tape-attachment, slide plate for tape­attachment, presser foot for tape-attachment

Code

0

Motor

✽

Compatible with clutch motor
(without synchronizer and
resistor pack)

1

Compatible with SC-800 and EC-10B
(with built-in synchronizer and
resistor pack)

Code

S

Auto-lifter

Not provided

Motor

0

(Not provided)

B

(Provided)

Cluth motor EC-10B

Where "0" is selected
Where "1" is selected
Where "0" is selected
Where "1" is selected

○
×
×
×

×
○
×
○

×
○
×
○

Code

Z

✽For the "Bottom-

feed: B," only the
needle gauges B,
D, and F are
applicable.

✽For the above category 4, select the feed category A (needle-feed).

✽For the AK-89, select the

motor compatibility category 1
(SC-910, SC-800 or EC-10B).

✽Refer to the combination availability table.

✽Refer to the combination

availability table.

LH3126F

Adjustment of the
feed dog inclination

Adjustment of the

feed dog height

Hook oil
regulating screw

Needle-feed

Bottom-feed

■ SPECIFICATIONS ■ OPTIONS

■ WHEN YOU PLACE ORDERS

■ SPECIFICATIONS ■ OPTIONS

●Micro-lifter

Part No.: 236-11056

This device can be installed on
the back of the face plate. It is
very convenient for frequent
use.

●

Automatic reverse feed kit

Part No.: 226-56854

The automatic reverse feed
function device can be moun­ted on the machine after the
setup. This device can be in­stalled on the back of the face
plate. It is very convenient for
frequent use.

●Tension-free feeder

(tape feeder) V059

Part No.: MAV-059000AA

The amount of tape to be fed
can be adjusted in accordance
with the sewing speed of the
machine. It is adaptable to
processes for attaching rein­forcement tape, attaching elas­tic tape or lace to foundation.

●Tape cutter AT-36

The tape cutter is able to cut
the tape just behind the press­er foot (20mm away from the
needle entry point).
The cutter pressure is adjust­able according to the material
thickness.

Max. sewing speed
Max. stitch length
Thread take-up
Needle bar stroke
Lift of the presser foot

Hook (selectable)
Needle

(at the time of delivery)

Feed system
Lubrication
Distance from

needle to machine arm
Bed size
Weight of the machine

head

3,000rpm

4mm (normal / reverse feed)

Slide type

33.4mm

By hand : 5.5mm / By knee : 12mm

Vertical-axis hook (regular fold)

Specific latch hook or specific hook with non-rotational bobbin

DP×5 (#10) #9〜#11

Change-over between needle-feed / bottom-feed

Fully automatic lubrication system by means of plunger pump

245mm

517mm×178mm

43kg

Adjustment of the
feed dog inclination

Adjustment of the

feed dog height

Hook oil
regulating screw

Needle-feed

Bottom-feed

■ WHEN YOU PLACE ORDERS

■ SPECIFICATIONS ■ OPTIONS

1

2

1.4

1.15

φ1.4

φ1.6

φ2.0
φ2.2

1.7

φ1.4

1.7

1.15

φ1.4

1.7

φ1.4

1.6

1.15

φ1.4

1.7

φ1.4

■ Gauges installed at the time of delivery

Gauge size

Needle-feed gauges

Throat plate

Standard type

For tape attachment

Standard type

For tape attachment

Standard type

For tape attachment

Presser foot Feed dog

(small pitch)Code

mm

inch

Gauge size

Code

mm

inch

Gauge size

Code

mm

inch

Throat plate Presser foot Feed dog

Throat plate

Feed dog (small pitch) Feed dog (large pitch)

Presser foot

Feed dog (small pitch) Feed dog (large pitch)

Bottom-feed gauges

Common gauges for

needle-feed and bottom-feed

Slide plate (front)

■ Optional gauges

Feed dog

(large pitch)

Rectangular feed For light-weight materials

B
D
F
G
H

3.2

4.8

6.4

7.1

7.9

1/8

3/16

1/4
9/32
5/16

101-47650
101-47858
101-48054
101-48153
101-48252

226-25107
226-25305
226-25503
226-25602
226-25701

232-06808
B1109-512-D0B
B1109-512-F0B
B1109-512-G0B
B1109-512-H0B

226-27152
226-27350
226-27558
226-27657
226-27756

226-47051
226-47150
226-47358
226-47457
226-47556

B1613-512-B0B
B1613-512-D0B
B1613-512-F0B
B1613-512-G0B
B1613-512-H0B

B
D
F

3.2

4.8

6.4

1/8

3/16

1/4

228-45200
228-45408
228-45606

103-91852
103-92058
103-92256

232-05107

232-05305

232-05503

B1110-051-0A0 232-06709

B
D
F
G
H

3.2

4.8

6.4

7.1

7.9

1/8

3/16

1/4
9/32
5/16

Gauge size

Code

mm

inch

B
D
F
G
H

3.2

4.8

6.4

7.1

7.9

1/8
3/16

1/4
9/32
5/16

101-08108
101-08207

B1109-528-B00
B1106-528-D00

B1109-528-G00

101-86302
101-86401

101-86500

101-40804
101-40903

22637656
22637854
22638050
22638258
22638357

226-35107
226-35304
226-35502
226-35700
226-35809

226-34000
226-34208
226-34406
226-34505
226-34604

Bed with flat top surface

With behind-the­needle-slot grooves

With behind-the­needle-slot grooves

With behind-the­needle-slot grooves

Without behind-the­needle-slot grooves

Without behind-the­needle-slot grooves

For tape attachment

Slide plate (front)

226-08558

All-thin type

Needle slot

φ2.0 (B gauge)
φ2.2 (D and F gauges)

With swivel guide

With behind-the­needle-slot grooves

Needle clamp

Needle-feed gauges

With tape inserting
recess

Throat plate

For tape attachment

226-28002
226-28200
226-28408
226-28507
226-28606

Needle-feed gauges

Common gauges for

needle-feed and

bottom-feed

INTERNA TIONAL SALES H.Q.

✽

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 catalog is printed on recycle paper.

FEBRUARY, 2004 Printed in Japan(AD)

8-2-1

, KOKURYO-CHO, CHOFU-SHI,

TOKYO

182-8655

, JAPAN

PHONE :

(81)

3-3480-2357, 2358

FAX :

(81)

3-3430-4909, 4914

http://www.juki.com

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