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High-Speed, 1-needle, Lockstitch Buttonholing Machine
LBH-790 SERIES
Thanks to the upper and lower scissors that cut and tuck in the thread
without fail, the needle thread hauling mechanism that ensures sewing
even on the overlapped section of a material and the improved thread
path, as well as the capability of low-tension sewing, the machine can
finish high-quality straight buttonholes with consistency regardless of
the type of material and process.
Threading procedure is simplified, the pressure required to depress the
foot pedal is reduced, the pedal stroke is made smaller and the needle
thread cutting scissors can be easily positioned at its stand-by position.
All of these features are developed to help reduce the operator's fatigue
and enhance ease of operation.
safety mechanism can be easily adjusted, thereby achieve a higher
grade of maintenance ability.
works such as adjustment and replacement of the bobbin thread
trimmer can be performed with greater ease.
The machine head is designed while laying a great importance on ease
of operation.
The machine head has a wider sewing area, which
enables the operator to handle the workpiece with ease.
of the machine head is cut in consideration of lateral installation of the
machine head.
Electronic-stop motor type
The machine equipped with an electronic-stop motor flexibly adapt to
the material changing.
The electronic-stop motor allows the sewing
speed to be adjusted in accordance with the type of material to be sewn
and thread to be used.
Furthermore, the machine head now has no
stop-motion mechanism.
when stopping machine operation.
comfortable work environment.
SPECIFICATIONS
Model name
Type
Sewing speed
Needle bar stroke
Max. lift of the work clamp check
Number of stitches
Buttonhole length
Needle (at the time of delivery)
Hook
Lubrication
Lubricating oil
Motor to be used
Sewing speed control function
Stop-motion mechanism
Weight of the machine head
LIST OF SUBCLASS MACHINES ACCORDING TO THEIR APPLICATIONS
Subclass
Application
models
RS type:
Men's shirts, ladies' blouses,
Standard
work uniforms and ladies' wear
Knits including knitted underwear,
RK type:
sweaters, cardigans and tights
Knits
and medium-weight garments
including work uniforms.
Furthermore the hook timing and
The machine ensures that maintenance
As a result, stop-motion noise is eliminated
This ensures quieter and more
LBH-791R LBH-794R
General-purpose motor type
(For the LBH-791 to 793 models, the buttonhole length can be changed by replacing the work clamp check.
The LBH-794 is exclusively used for sewing large buttonholes.)
300W general-purpose motor
Not provided
Provided
52kg
A
C
Stitch formation
The side face
Max. 4,000rpm (normal: 3,600rpm)
34.6mm
14mm
56 370 (by gear-change method)
6.4 38.1mm
DP 5 (#11J) #9 #14
DP type, Automatic-lubricating full-rotary hook
Automatic
JUKI New Defrix oil No.1 (equivalent to ISO VG7)
Bottonholing size (in mm)
B
A
6.4 19.1
A
6.4 25.4
B
2.0 4.0
B
2.0 5.0
C
9.8 24.8
C
9.8 32.2
LBH-791RS
LBH-792RS
LBH-791RS-1
LBH-792RS-1
LBH-791RK
LBH-792RK
LBH-791RK-1
LBH-792RK-1
LBH-791RS-1
LBH-791R-1 LBH-794R-1
Electronic-stop motor type
400W electronic-stop motor
Provided
Not provided
50kg
A
6.4 31.8
A
12.7 38.1
B
2.0 5.0
B
2.0 5.0
C
9.8 39.7
C
16.7 47.2
LBH-793RS
LBH-794RS
LBH-793RS-1
LBH-794RS-1
LBH-793RK
LBH-794RK
LBH-793RK-1
LBH-794RK-1
LBH-790 SERIES (June, 2001) 1/4
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