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1-needle, Lockstitch Buttonholing Machine LBH-780 Series

At the very least, a good buttonholing machine should finish seams of consistent quality and be widely adaptable to many different kinds of materials and seam specifications. The LBH-780 series buttonholing machines respond to these needs and help reduce operator fatigue, thereby finishing high-quality buttonholes with a higher degree of efficiency.

  • The buttonholing position can be easily adjusted. This further enhances ease of operation. A newly introduced mechanism in the needle thread trimmer prevents interference with the positioning of buttonholes. The shape of the face plate is designed to provide sufficient clearance around the needle entry position. As a result, ease of operation is further improved.
  • The work clamp can be lifted as high as 12mm. The machine is capable of sewing heavy-weight materials such as bulky knits. The maximum lift of the work clamp is 12mm, enabling the machine to make high-quality buttonholes in heavy-weight materials.
  • Work clamp can be easily lifted. This helps to substantially reduce operator fatigue. The pressure required to depress the start pedal and lifter pedal has been reduced. This helps to dramatically reduce operator fatigue.
  • The knife mechanism and stop-motion mechanism produce less noise when they actuate, thus contributing to a more comfortable working environment. Thanks to the simple design of the stop-motion mechanism and unique knife mechanism, the machine operates with low noise. The machine starts, decelerates and stops smoothly
SKU: LBH-780 Categories: , Tag:



Model name LBH-780 LBH-780NV LBH-780NB
Application Buttonholing for ordinary cloth, knit, etc. For double-stitching with gimp For double-stitching with gimp and gimp cutter
Sewing speed 3,600sti/min* Max. 3,300sti/min*, Normal 3,000sti/min*
Needle bar stroke 34.6mm
Max. lift of the work clamp 12mm 11.5mm
Max. thickness of material that can be used 4mm (with the work clamp lowered)
Number of stitches 54~345 (by gear-change method)
Length of buttonholes 6.4~38.1mm 9.5~38.1mm 11.5~38.1mm
Needle DP×5 #11J, For JE: 134 Nm75
Hook DP type, automatic-lubricating full-rotary hook
Deceleration method Belt-shifting method
Lubrication Automatic
Lubricating oil JUKI New Defrix Oil No.1 (equivalent to ISO VG7)
Motor 300W general-purpose motor (A 250W general-purpose motor can be used when the machine is used at a sewing speed of 3,100rpm or less.)
Weight of the machine head 40kg

* “sti/min” stands for “Stitches per Minute.”

(for double-stitching with gimp)

(for double-stitching with gimp and gimp cutter)

  • The machine neatly tucks in tetron gimps with consistency. Thanks to the improved locus of the gimp guide, the machine is flexibly adaptable to changes in the types of gimps to be used, easily switching operation to accommodate one to three pieces of tetron thread, or one sewing thread and one span thread. In addition, the gimp guide is designed so that it shifts vertically. This means that the relation between the needle and the gimp guide is uniform even if the material thickness varies, thus allowing the machine to tuck in gimps with consistency.
  • A machine is designed for sewing soft-to-the-touch circular bartacks. It has been developed to sew circular bartacks on ladies’ wear, a process that requires a very delicate finish.
  • The machine ensures stable stitching performance on multi-layered portion of the material. The improved work clamp and its fulcrumsecurely hold multi-layered portions of a heavy-weight material, thereby preventing sewing troubles such as uneven material feed, slip-off of gimp and needle breakage. This allows the machine to perform buttonholing with consistency.
  • The gimp cutter dramatically promotes lobor-saving. (NB type) The length of remaining gimp after its trimming is only about 2mm. This eliminates the thread cropping procedure in the after-process, thereby increasing productivity. The distance between the gimpcutting scissors and the needle scarcely changes when sewing multilayered portions of the material, thus ensuring consistent gimpcutting at any occasion.
LBH 780 needle point 2

The lift of the work clamp is as high as 12mm.


LBH 780 needle point 1

This needle entry point can visually checked. This permits easy positioning of buttonholes.

A new LBH series model has been designed for a round-type of bartacking for ladies’ wear with a soft, feminine touch. With this new model, finished products provide a soft feeling.

Square-type bartacking

Square-type bartacking

 Round-type bartacking

Round-type bartacking


Subclass models Application Buttonholing size (in mm)
A 6.4 ~ 19.1 A 6.4 ~ 25.4 A 6.4 ~ 31.8
Stitch formation B 2.5 ~ 4.0 B 2.5 ~ 5.0 B 2.5 ~ 5.0
C Max. 22 C Max. 33 C Max. 40
Standard type Men’s shirts, blouses, working wear, ladies’ wear  LBH 780 stitch 1 LBH-781U LBH-782U LBH-783U
K type: For Knits Knitting fablic underwear, knit products including sweaters, cardigans and tights, medium-weight material including working wear. LBH 780 stitch 2 LBH-781KU LBH-782KU LBH-783KU
NV type : Doublestitching with gimp Sweater, polo shirts, knits, and jersey wear made of the materials which need to be sewn with especially durable stitches. LBH 780 stitch 3 *1
NB type : Doublestitching with gimp and gimp cutter Same with the application of the NV type models. NB type model is equipped with the automatic gimp cutter. *3

*1…Dimension A : 9.5 ~ 25.4mm 
*2…Dimension A : 9.5 ~ 31.8mm 
*3…Dimension A : 11.5 ~ 25.4mm 
*4…Dimension A : 11.5 ~ 31.8mm


Optional Devices

Model Part No. Description Feature
Q060 MAQ-060000A0  MAQ-060000A0

Men’s shirts

Spacer for first bottonholes This is a ruler to be used to set the first buttonhole at a predetermined position in accordance with the shape of the collar. Adjustable regardless of the dimensions and shape of collars.
Q061 MAQ-061000A0  MAQ-061000A0

Ladies’ blouses

Q066 MAQ-066000A0  MAQ-066000A0
Spacer for buttonholes on topcenter plaits

  • Buttonholes are positioned at right angles to the top-center plaits.
This is a ruler to be used for sewing lateral buttonholes in the process of buttonholing top-center plaits. The ruler is provided with four positioning pointers on the right and left. Each of the pointers can be shifted with a single motion.
SK-1 Pneumatic knife driving unit The SK-1 pneumatic knife driving unit cuts the material by tapping a flat knife and nylon plate on the material. This prevents the tensing-up of texture yarns that so often occurs when sewing glossy synthetic materials.

LBH-780 series optional devices


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

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