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1 needle CNC sewing machine (head turning type)

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1-needle CNC Programmable Turning Head Sewing Machine (head turning type)

The machine-head-turning mechanism helps achieve high-quality seams uniformly in every sewing direction

JUKl's unique synchronization technology controls the machine head, hook and feed mechanism, thereby creating the most favorable seams.

In the case of continuous circumference sewing, the sewing machine constantly detects the direction of sewing. As a result, consistent-quality seams are produced regardless of the direction of sewing.

With its sewing area of "1,000 mm × 600 mm" the AMS-251 is best suited to the sewing of decorative stitches and large-size products

The CNC sewing machine is ideally suited to the sewing of decorative stitches on car seats, luxury bags and school bags, but also to the sewing of large-sized products with zero design tolerance for irregular stitches. In addition, the sewing machine can be used for sewing two or more pieces of small products at a time.

Perforation Camera System (optional)

Thanks to JUKl's original image recognition technology, this sewing machine enables sewing of hard-to-sew perforated materials as desired and produces beautifully finished seams.

Machine head-turning Slip ring system*1

Slip ring system has been adopted to the new machine-head turning mechanism. As a result, the limitless turning of the machine head is enabled to allow the sewing machine to sew complicated patterns continuously.

*1 Rotating connector that is able to transmit power and electric signals from the stationary body to the rotating body

CNC Machine head-turning Cutting point needle

The cutting point needle can be used regardless of the sewing direction since the sewing machine constantly faces the sewing direction at its front.

Machine head lifting function

Since thick materials, clamps, palettes with protrusions can be used, the design will be expanded.

Multi-axis control technology

The multi-axis control technology used by JUKI is applied to simultaneously control six axes*2.

*2 Machine-head turning, Hook turning, Main shaft, Hook driving shaft (hook), X-axis feed, Y-axis feed

Horizontal-axis, 3 fold-capacity rotary hook

Adoption of the 3 fold-capacity hook helps reduce the frequency of bobbin replacement even when the thick thread is used, thereby supporting sewing of large products.


The IP420 for the existing AMS Series models have been adopted for the new AMS model. In addition, the existing sewing pattern input software "PM1" is also applicable.

Safety cover

Opening and the closing sensor is mounted to the turning-head cover and turning-hook cover to prevent the machine from starting when the cover(s) is opened and to automatically stop the machine if the cover(s) is opened while the machine is in operation.

Start button

A 2-handed start button has been adopted for the safe, accurate startup. In addition, unintentional start-up of the machine is prevented.

Bobbin replacement cover

Bobbin can be changed easily by opening the accessible cover without requiring the operator to reach under the machine to change the bobbin.

Model AMS-251
Application Medium - Heavy
Sewing Area
1,000 mm x 600 mm
Max Sewing Speed 2,500 sti/min*
Needle (at the time of delivery) DPx 17, #18 -25 (#23)
Thread Nm 60/3 -20/3
Hook Rotary Hook, Horizontal-Axis, 3 fold-capacity
Head Liftable 50 mm
Storage of pattern data Main-body memory: Max. 33,000,000 stitches, 999 patterns
(max. 50,000 stitches I pattern)
External media: Max. 50,000,000 stitches, 999 patterns
(max. 50,000 stitches I pattern)
Total weight 950 kg
Dimensions 2,400 mm (W) x 1,800 mm (D) x 1,600 mm (H)