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Sewing speed Max. 4,200sti/min, Normal 3,600sti/min
Needle bar stroke 34.6mm
Size of cloth cutting knife 6.4~31.8mm (1/4"~1-1/4")
Bartacking width Max. 5.0mm
Buttonhole length  Max. 41mm (optional: 120mm) LBHS-1795: 120mm
Precision of needle throwing mechanism  0.05mm
Needle thread tension  Active tension (electronic thread tension control system)
Number of stitches  Automatically computed from the size of the buttonhole and stitch pitch
Needle DP×5 (#11J) #11J~#14J
Hook DP type, full-rotary hook
Lift of the work clamp 14mm(17mm by the reverse-rotation needle-up function)
Auto-lifter  Provided as standard (stepping motor type)
Needle throwing system Stepping motor
Cloth feeding system Intermittent feed by stepping motor
Cloth cutting knife system By double-acting solenoid
Number of standard patterns 30 patterns
Number of patterns that can be input  Max. 99 patterns
Bobbin thread winder  Built-in the machine head
Machine head drive system Compact AC servomotor (direct-drive system)
Power requirement/ Power consumption Single-phase 220V, 230V, 240V・3-phase 200~240V/600VA
Lubrication Only the hook section needs a minute-quantity lubrication.
Lubricating oil Hook: New Defrix Oil No.1 (equivalent to ISO VG7)
Total weight 112kg

Excellent Performance

Cycle sewing•Continuous sewing   

  • Cycle Sewing
    20 different programs can be registered, and as many as 15 different patterns can be stored in one program.
    The machine is able to continuously sew many different patterns without requiring the work clamp foot to be lifted. As many as 20 programs can be registered, and 6 different patterns can be stored in one program. (Related parts need to be exchanged for optional ones.)

High Speed and Clean 

  • Max. 4,200sti/min, Normal 3,600sti/minsubstantially decreased.
  • Advanced dry-head technology, no lubrication is required except for the hook section. This eliminates oil stains on the sewing product.

All drive mechanism is electronically

  • An electronic control feature has been adopted for the material feed mechanism, needle rocking mechanism, needle thread trimming mechanism, bobbin thread trimming mechanism, cloth cutting knife mechanism and presser bar lifting mechanism.,
  • All adjustment values are entered as data. They can be set or stored in the memory on the operation panel.

Many functions of the pedal

  • The machine is provided as standard with auto-lifter driven by a stepping motor. This helps reduce the operator’s fatigue. As for the pedal, 1-pedal and 2-pedal modes can both be changed over and the intermediate stop, which facilitates positioning of the sewing product, can be specified.
  • The work clamp foot lift can be set as desired. The reverse-rotation needle-up function offers a maximum work clamp foot lift of 17mm.
Pedal motionPedal type
2-pedal 1-pedal
(without intermediate position)  
(with intermediate position))
Initial position
②Intermediate position①Maximum position①Maximum position
Setting of sewing productPresser goes up as high as pedal toe down amount of the left side pedal.Presser comes down when the left side pedal is depressed.
→③Sewing position
The first step of the right side pedal
→③Sewing position

The first step of the right side pedal
→③Intermediate position

The second step of the right side pedal
→③Sewing position

Start of sewingThe right side pedal is deperssedThe second step of the right side pedalThe third step of the right side pedal
End of sewing②Presser automatically goes up to intermediate position①Presser antomatically goes up to maximum position①Presser antomatically goes up to maximum position
Work clamp position

(without intermediate position)  2-pedal 


Purl stitching ←→ Whip stitching

(For a changeover between purl stitchand whip stitch, threading of bobbin,as well as the bobbin thread tension need to be changed.)

Single stitching → Double stitching

•For double stitching, the bartacking section is skipped and only the parallel

sections are sewn twice. This prevents any excessively tight finishes in the bartacking section of the buttonhole.

•First- and second-round stitches can be sewn using different stitch widths.

Knife sizeCloth cutting knifeCloth cutting knife ,
Work clamp
Work clamp foot
For stitch width 5mmFor stitch width 6mm
(for knits)
Part No.Mark(Length of cloth cutting knife)
Part No.1790
Part No1790
6.4mm (1/4″)BL724AJK AP570CJK(6.4~19.1mm)<1> (4×25mm)P576JK
<1> (4×25mm)
<3> (6×41mm)
9.5mm (3/8″)BL724BJKB
11.1mm (7/16″)BL724CJK C
12.7mm (1/2″)BL724DJKD
14.3mm (9/16″)BL724EJK E
15.9mm (5/8″)BL724FJKF
17.5mm (11/16″)BL724GJK G
19.1mm (3/4″)BL724HJK H
22.2mm (7/8″)BL724IJK IP571CJK(6.4~25.4mm)<2> (5×35mm) P572JK
<2> (5×35mm)
25.4mm (1″)BL724JJKJ
31.8mm (1-1/4″)BL724KJK KP574CJK(6.4~31.8mm)<3> (5×41mm) P577JK
<3> (5×41mm)
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