Juki LU-1511N-7

1 Needle, unison feed, heavy-weight lockstitch machine with vertical axis large hook (with Automatic Lubricating Mechanism and Automatic Thread Trimmer)

Juki’s unique feed mechanism promises excellent efficiency of feed. In addition to the standard models of 1 needle machine, other models intended for special purposes are available, including models for extra heavy materials and one having a thread trimmer. The machine is applicable to an extended range of heavy materials for industrial use, such as cargo handing belts and containers, as well as those for general use, such as car seats, sofa and bags, thereby contributing to both improved quality and increased productivity.

Automatic lubricating mechanism helps improve maintainability. The machine is provided with a sub oil pan and double filter to keep dust from entering the oil.

The machine is equipped with a bottom feed adjusting mechanism that adjust the amount of bottom feed while keeping the needle feed fixed. With this adjusting mechanism, the machine can prevent uneven material feed without charging stitch pitches.

The area around the needle entry is designed to be easily observed (LU-1511N-7)

Since the needle thread tension-release solenoid is fitted on the rear face of the machine head, the area around the needle entry and one touch type reverse feed button  is easily viewable. This substantially contributes to improved operability.

The walking foot and presser foot’s alternating vertical movement can be set and changed with ease.

The vertical stokes of the presser foot and walking foot (their alternating vertical movement) can be easily changed using a large dial mounted on the top surface of the machine head.

In additional the sewing speed is automatically adjusted with the set value. With this feature, ideal sewing conditions are maintained at all times.

The machine is equipped with an instantaneous changeover device for alternating the vertical movement amount of the walking foot and presser foot, which demonstrates its capability for processes involving sewing products with a lot of multi-layered portions.

Thread trimming without fail.

The machine leaves a shorter needle thread after thread trimming, improving thread consumption efficiency. With a rigid knife and improved cam shape, the thread trimmer cut thread as thick as #5 without fail.

A helpful automatic reverse feed function is provided as standard

With just a light press on the one touch type reverse feed button, reverse feed stitching is actuated. Furthermore is a suspended ruler is attached on the machine or 3 dimensional sewing products is sewn, the button can be shifted upwards to prevent interruption.

The auto lifter (pedal switch type) help to increase efficiency by reducing operator fatigue.

Bottom Feed micro adjustment mechanism is provided as standard

The 1 needle type machine is equipped with a bottom feed micro adjustment mechanism with the needle feed amount fixed. This helps prevent irregular stitches which are free from pitch errors.

A new feed mechanism with a rectangular feeding motion prevents stitch gathering.

The new mechanism with a rectangular feeding motion promises consistent feed of materials of all thickness without stitch gathering.

The lower orbit of the feed dog prevents the material from flopping and reduces operating noise and vibration

The alternating vertical movement mechanism prevents irregular stitches

The machine has adopted a new mechanism that does not change that ration of alternate vertical movement of the walking foot and presses foot even when that material thickness changes.

Even when a heavy weight material is used, the presser foot lift does not decrease. This means that the presser foot comes into contact with the material at exactly the same time that it does when sewing lighter-weight sections of the material. As a result, the walking foot retains the material with a consistent pressure to prevent irregular sitichers.

The amount of the alternating vertical movement of the walking foot and presser foot can be adjusted up to the maximum of 6.5mm according to the height of multi-layered portions of material.

Consistent Seam Quality 

With the adoption of the new rectangular feed mechanism, an alternating vertical movement mechanism and a union feed mechanism, the machine can feed heavy materials powerfully and smoothly. Well tensed seams are consistently produced without pitch errors.

With its maximum stitch length of 9mm, the machine can be applied to a broader range of uses.

Higher lift of the Pressor Foot

The high, 16mm foot lift enables easy material handling.

The Machine comes with a Dual Tension Mechanism

The Machine comes with a dual tension mechanism, with which the machine can support high tension sewing with thick thread. This means that the machine produces seams of excellent quality on a broader range of materials, extending from light to heavy weight.

The Highly Efficient Vertical Axis Double Capacity Hook is Equipped as Standard

With the adoption of this vertical axis double capacity hook, the frequency of bobbin thread changing is reduced, promising sewing work of increased efficiency.

Improved Operability

The stitch length can be easily selected by the stitch dial.

The machine is provided with many improved features that offer enhanced operability such as an easy to observe area around the needle, placement of the bobbin winder on the front  face of the machine arm and a large handwheel.

A knee lifter mechanism is built in the bed. This reduces the pressure required to operate the knee lifter and facilitates set up. (Machine equipped with automatic thread trimmer are excluded.

The machine is full open top design makes it possible to fully open the top of the machine arm. Thanks to this design adjusting works can be done without tilting the machine head.

The Machine is equipped as standard with a safety clutch for preventing hook breakage. Reset work can be done simply by pressing a button.

Technical Specification

Updated 30/05/24