• Shorter - thread remaining mechanism (LBH-1790ANB)

  The length of remaining bobbin thread becomes shorter, less than 2.5mm on average

  The newly-developed shorter-thread remaining mechanism trims the thread short and eliminates the trouble of manual thread nipping.

  

• Management of sewing performance and sewing machine by the utilization of IoT (Internet of Things)

  Management, browsing and editing of data can be carried out on the application software

  Data on sewing machine adjustments made according to the product to be sewn can be transferred to a commercially-available Android tablet in contactless mode. This enables quick check for uniform settings as well as confirmation of conditions of sewing machines in a sewing line, thereby facilitating setup changes. The operation panel is also provided as standard with a USB port. Data management and software update can be carried out with ease using a USB thumb drive.
  Data items of sewing can be numerically managed to ensure "stable quality" and "reduction in time required for setup changes".
  Quantified sewing data can be externally taken from the sewing machine using an Android tablet or USB thumb drive.
  *Android OS Version 6.0 is recommended to use JUKI Smart APP.
   (Operation is confirmed with respect to Versions 5.0 and later. )
   Contact JUKI distributor in your area for how to use the application software.

  

• Higher productivity

  The maximum sewing speed is 4,200 sti/min., and the jump speed is 200 mm/s. The cycle time has been further reduced for continuous sewing.

• Cycle sewing and continuous sewing

  Cycle sewing

  Twenty different programs can be registered, and as many as 30 different patterns can be stored in one program.

  Continuous sewing

  The machine is able to continuously sew two or more different patterns without requiring the work clamp foot to be lifted. As may as 20 programs can be registered, and six different patterns can be stored in one program. (Related parts need to be exchanged for optional ones.)

• All drive mechanisms are electronically controlled

  • Electronic control of the material feed mechanism, needle feed mechanism, needle thread trimming mechanism, bobbin thread trimming mechanism, cloth trimming mechanism, presser lifter mechanism and other mechanisms has been achieved.
  • All adjustment values are digitalized to enable the operator to set and store those values on the operation panel.

• Operator-friendly environment

  • Operation with reduced noise is ensured by the adoption of the direct-drive motor.
  • The illuminance of the LED light is adjustable and is located on the underside of the arm jaw. It is provided as standard for all models of the LBH-1790AN Series.
  • The sewing product can further be placed on the machine easily by installing the auxiliary table (standard accessory). In addition, the needle entry is located in the center of the bed, promising easier positioning of the sewing product.

   

• Many functions of the pedal

  • The machine is provided as standard with a newly-developed auto-lifter driven by a stepping motor. This helps reduce the operator's fatigue. As for the pedal, one-pedal and two-pedal models 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.

  * Please order two-pedal model by a part.

  

• JUKI's unique active tension (Electronic thread tension control system)

  • Needle thread tension for sewing parallel and bartacking sections of buttonholes can be separately controlled through the operation panel and stored in memory according to various sewing conditions (e.g., type of thread, type of material and sewing speed).
  • The machine is able to change the needle thread tensions at the parallel and bartacking sections of the buttonhole, to produce a beautiful buttonhole shape. This capability helps greatly in preventing thread breakage.
  • Needle thread tension is activated at the beginning and end of sewing. This prevents unthreading of the needle thread, and thread fraying that is likely to occur at the beginning of sewing.
  • Thread tension for basting stitching can be specified separately.

  

• Basting stitch mechanism is effective for the production of beautiful buttonholes

  The basting stitch is effective on elastic materials such as knits. Basting stitch: Since the needle thread is tucked in without fail, it will never jut out of the buttonhole seams. Basting stitch can be sewn by nine rounds.

  

• The machine is equipped with a multiple knife-dropping function

  • Thanks to the multiple knife-dropping function, it is no longer required that the knife be changed at the time the buttonhole size is changed. The number of knife dropping times can be automatically set according to the buttonholing size in cases where the buttonhole size is frequently changed for small-lot productions or during the cycle sewing of buttonholes that are different in size.
  • The double-acting stepping motor type knife mechanism is free from the faulty dropping/returning of the knife.
  • The knife supports sewing lengths of 41mm at the maximum. In addition, knife mechanisms for 70mm and 120mm are optionally available.

• Sewing settings can be easily changed

  

• The machine eliminates oil stains on the sewing product

  • Thanks to our advanced dry-head technology, no lubrication is required except for the hook section. This eliminates oil stains on the sewing product.
  • The machine can be completely changed into a dry-head machine by replacing the hook with an optional non-lubricated hook. (In this case, the maximum sewing speed will be 3,300sti/min)

• Adjustment of the hook oil quantity

  • The newly installed "hook oil quality adjustment screw" can be found by opening the hook lid cover. With this screw, the operator is able to to adjust the oil quantity in the hook with ease.
  • Oil can be easily added to the hook oil quantity tank with an oiler.

  

• The machine is provided as standard with as many as 31 stitch patterns for buttonholing

  It is able to store 99 different patterns in its memory, which can be selected as desired from the operation panel.

  

When you place orders

LBH-1790ANB
LBH-1790AN

Guage			CLOTH CUTTING KNIFE_STANDARD			CLOTH CUTTING KNIFE_FLAT KNIFE	KNIFE GUARD	THROAT PLATE
Figure
Knife size		Mark	P/N	Remarks		P/N	P/N	P/N
A	B	C
inch	mm	-
1/4	6.4	F	B2702047F00	-		B2745771F00	B2746771000	13782800
3/8	9.5	K	B2702047K00A			B2745771K00
7/16	11.1	I	B2702047I00			-
1/2	12.7	L	B2702047L00A	Knife at shipping for other than LBH-1796A and 1796AN.		B2745771L00
9/16	14.3	V	B2702047V00			B2745771H00
5/8	15.9	M	B2702047M00A			B2745771M00
11/16	17.5	A	B2702047A00			-
3/4	19.1	N	B2702047N00			B2745771N00
7/8	22.2	P	B2702047P00			B2745771P00
1	25.4	Q	B2702047Q00A			B2745771Q00
1-1/8	28.6	R	-	-		B2745771R00
1-1/4	31.8	S	B2702047S00A	LBH-1790AB, 1790ANB/ 1796A, and 1796AN are not supported.		B2745771S00

Guage				THROAT PLATE			FEED PLATE			Spacer
				S(Standard)		K(Knitwear)	S(Standard)		K(Knitwear)
Figure
Model	Sewing area (Horizontal/ vertical)	U014 division	Presser arm (area supported)	Shape[1] A×B	Shape[2] A×B×C×D	Shape[1] A×B	Shape[1] supported	Shape[2] supported	Shape[2] supported
LBH-1790S LBH-1790A LBH-1790AN	4×25	Type 1	ST	40027553 (1.4 X 6.2)	-	40027554 (1.2 X 6.2)	40004205	-	40004205	-
	5×35	Type 2
	5×41	Type 3
	5×70	Type 5	OP				40006339	-	40006339	-
	5×120	Type 5
LBH-1790AB LBH-1790ANB	4×25	Type 1	ST	-	40153019*2 (1.4 X 6.2 X 1.8 X 10.3) 40186955*1 (1.4 X 5.2 X 1.8 X 8.3)	-	-	40160114*2 40186956*1	-	Necessary for the Throat plate base unit 40011319(X2), 40004326(X1), WP0551016 SH(X2)
	5×35	Type 2
	5×41	Type 3		-	-	-	-	-	-

*1 This is an optional guage that prevents cloth displacement that can oocur at a stepped part. A presser to be used is B1552781000A/B1552782000 .
*2 The width of the convex part of the needle plate is wider than any convex part of needle plates with other specifications. If this is used with a feed plate with other specifications together, the feed plate may interfere with this.
 

Guage				PRESSER			Presser foot		PRESSER FOOT ASM.
Figure										-
Model	Sewing area (Horizontal/ vertical)	U014 division	Presser arm (area supported)	Shape A×B	S(Standard)	K(Knitwear)	Springs are available	Single item	S(Standard)	K(Knitwear)
LBH-1790S LBH-1790A LBH-1790AN	4×25	Type 1	ST	30 X 5.6	B1552781000A	D1508771K00A	B15117710A0B	B1511771000B	B15527810A0	-
	5×35	Type 2		40 X 6.6	B1552782000	D1508772K00	D1511772KA0	B1511772000A	B15527820A0
	5×41	Type 3		46 X 6.6	B1552783000	D1508773K00	D1511773KA0	B1511773000A	B15527830A0
	5×70	Type 5	OP	76 X 6.6	14523708	145233401	14523252	14523203	-
	5×120	Type 5		127 X 6.6	40008658	-	40008646	40008647	-
LBH-1790AB LBH-1790ANB	4×25	Type 1	ST	30 X 5.6	40160113 B1552781000A*3	-	B15117710A0B	B1511771000B	-	-
	5×35	Type 2		40 X 6.6	B1552782000*3		13946454	B1511772000A
	5×41	Type 3		46 X 6.6	-		-	-

*3 This is a component part (optional) for *1.
 

*4 For LBH-1790A, 1790AN, 1790AB, 1790ANB, 1795A, and 1795AN, the change of specification can be made only by changing the parts since those machines uses the same frame
 

Caution						Figure
When replacing the throar plate between LBH-1790A* and LBH-1790A*B, changing the machine type setting in the memory is required since the distance between the needle entry and knife different than the standard type. [Size of needle entry knife groove] LBH-1790A*B,LBH-1796A*: 1mm LBH1790A*,LBH-1795A*,LBH-1790S: 2mm
LBH-1790S, 1796A and 1796AN use the special frame, which if not compatible with LBH-1790S, 1790A, 1790AN, 1790AB, 1790ANB, 1795A and 1795AN. therefore, the presser type 1 to 3 cannot be assembled.						-
There is a difference of timing gage in LBH-1790S, 1790A and 1790AN; LBH-1790AB and 1790AMB. Since the thickness of the throat plate is different, the length of the timing gage differs. The hook timing does not change since the total length is the same.						-
When the feed width is more than 5mm with LBH-1790S, 1790A, the presser arm and oil shield need to be replaced. (For details, refer to the parts book, specia specifications 2.)						-
When the feed direction is more than 41mm with LBH-1790S, 1790A, the presser arm needs to be replaced. (For details, refer to the parts book, special specifications 2.)						-

Guage			HOOK
Figure
Model	Sewing area (Horizontal/ vertical)	U014 division	S(Standard)	K(Knitwear)	Non lubrication hook
					P/N	Name of part	Qty	Remarks
LBH-1790S LBH-1790A LBH-1790AN	4×25	Type 1	13729066	13782065	[1]40006345 [2]40006349 [3]13729660 [4]SS8660612TP	[1]RP hook asm. [2]RP bobbin case [3]Hook sleeve asm. [4]Setscrew	[1]1 [2]1 [3]1 [4]4	Complete fry head machine is produced by installing non lubrication hook. (Max. sewing speed reaches 3,300 st/min.)
	5×35	Type 2
	5×41	Type 3
LBH-1790AB LBH-1790ANB	4×25	Type 1	13729066	-
	5×35	Type 2
	5×41	Type 3

Guage	Points of replacement for feed 70mm and 120 mm
No.	P/N	Name of part		Qty	Remarks
[1]	40006335	Presser arm 120		1	Common to 70 mm and 120 mm
[2]	40006340	Presser arm spacer		1	Not necessary when using 120 mm presser
[3]	SM6040450TP	Setscrew		3	Not necessary when using 120 mm presser
[4]	40008646	Presser foot 120 (asm.)		1	For feed 120 mm
[5]	40008658	Presser foot 120		1	For feed 120 mm
[6]	14523252	Presser foot 70 (asm.)		1	For feed 70 mm
[7]	14523401	Presser 70		1	For feed 70 mm (for knits)
[8]	14523708	Urethane presser 70		1	* Optional for feed 70 mm (for cloth)
[9]	14524102	Flat presser 70		1	* Optional for feed 70 mm (for heavy-weight cushion stuff)
[10]	SS6060210SP	Setscrew		2	Common to 70 mm and 120 mm
[11]	SD0790203SP	Hinge screw		-	Incorporated in machine head
[12]	40028682	Close cam 120		1	Common to 70 mm and 120 mm
[13]	40112711	Lifting plate 120		1	Common to 70 mm and 120 mm
[14]	SM6050800SP	Setscrew		2	Common to 70 mm and 120 mm
[15]	40004203	Feed base (asm.)		-	Incorporated in machine head
[16]	SM8050502TP	Setscrew		-	Incorporated in machine head
[17]	40004288	Presser arm shaft		-	Incorporated in machine head
[18]	40006339	Cloth feed plate 120		1	Common to 70 mm and 120 mm
[19]	SM6040602TP	Setscrew		-	Incorporated in machine head
Figure