BERNINA L 660

Easy overlocking

Illuminated One-Step BERNINA Air Threader
Easily thread the needle with the built-in threader
BERNINA Free Hand System with Feed Dog Drop
Program your needle stop, up or down? The choice is yours!
Easy-to-operate knife from outside

Overview
Image Gallery
Features & Functions
Accessories
Support

BERNINA L 660 – exploring new possibilities with ease

The BERNINA L 660 combines maximum comfort with precision technology. The BERNINA Free Hand System (FHS), the programmable foot control, and the illuminated One-Step BERNINA Air Threader make every project easier, faster, and more intuitive.

"The L 660 proves that overlockers do not have to be difficult. It's not necessary."

Serena, Content Creator "Sewrena" from the USA

Join Serena, Anna and Christin on their trip to Zurich, where they’ll discover the new L 660 and L 620. See how they test the machines and bring their individual projects to life.

Watch Video

Getting started has never been so comfortable

Illuminated air threader
All-in-one magnetic looper cover
Integrated needle threader

The innovative magnetic all‑in‑one looper cover allows quick and intuitive threading preparation. The illuminated One‑Step BERNINA Air Threader and the integrated needle threader make getting started so effortless that you can dive straight into your creative world.

Convenient handling

Free Hand System with Feed Dog Drop
Swing-out presser foot
2-step presser foot lift

With the BERNINA Free Hand System (FHS), you can easily raise and lower the presser foot using the knee lever while simultaneously lowering the feed dog, allowing you to easily position and remove your sewing project. In addition, the presser foot can be swung out to the side for convenient access to the needles. Thanks to the 2-step presser foot lifter, you can position even thick or multi-layered projects effortlessly and precisely.

Sew as you like

Programmable needle stop
Set the speed to your liking
Sewing light with dimmer

Control your L 660 exactly as you wish: With the BERNINA foot control, you can sew precisely stitch by stitch, and the back-kick function lets you raise or lower the needle with ease. The speed can be easily adjusted using the slider on the front panel, while the presser foot pressure can be customized for thin or thick fabrics. The dimmable sewing light creates the perfect atmosphere for precise work. Thanks to the powerful DC motor, you maintain perfect control at all times.

Precision in every detail

Micro Thread Control (mtc)
Differential feed
Total stitch control

With Micro Thread Control (MTC), you can fine-tune the looper thread amount for a flawless fabric edge. Just like any other setting, you can adjust the looper thread amount at any moment to achieve perfect stitches every time, even while you’re sewing. The stepless differential feed keeps even delicate or highly elastic fabrics beautifully smooth and free from puckering. It is this Total Stitch Control by BERNINA that gives you the freedom to create unique effects.

Everything in view and within reach

Magnetic tool holder
Accessory box with tool insert
Overlock Foot with Tape Guide #L11

With its open tape guide, the Overlock Foot #L11 is your go‑to solution for any fabric, from fine to heavy – and ideal when adding tape to your projects. Keep your tools exactly where you expect them with the magnetic holder, ensuring tweezers and scissors are always within reach. Prefer things neatly tucked away? The practical accessory box with its integrated tool‑insert lid keeps everything secure and beautifully organized.

Clever, spacious and compact by design

Easy to operate knife from outside
3 to 9 mm stitch width
Slide-on Table included

The L 660 provides a bright, spacious sewing area that gives you maximum creative freedom while maintaining a minimal footprint. Effortlessly guide large or heavy projects across the sturdy Slide‑on Table. Precisely adjust the knife position to the desired stitch width, up to 9 mm. For seams without cutting the fabric, the knife can be easily deactivated from the outside at any time.

Extremely fast, precise & quiet

Sew up to 1,200 stitches per minute
Powerful, consistent performance & precision
Extremely smooth operation

With the L 660, you can sew extremeley fast at speeds of up to 1,200 stitches per minute or stitch by stitch with maximum precision. This makes it even easier to create precise lines and curves. All this with the smooth operation for which BERNINA has always been known.

Personal advice at your Local BERNINA Store

Over 2,000 BERNINA Stores worldwide offer valuable services to all our customers. Your local BERNINA Store is there to proudly help you, with advice on machines and accessories that best suit your needs, with BERNINA Embroidery Software and also in servicing your BERNINA.

Explore the BERNINA L 660

Features & Functions

Overview
Stitch Variations
Technical Specifications
Comfort Features

Note:
Not all models and accessories are available in all countries. We reserve the right to make changes in both features and design.

Stitches	18
Stitches A variety of wide and narrow, long and short stitches for all your sewing projects.
Overlock Stitch Width	3-9 mm
Overlock Stitch Width The Overlock Stitch Width is adjustable to suit any fabric type and sewing technique. Wide stitches are suitable to sew and neaten medium to heavy weight fabrics, narrower stitches for medium to light weight and fine fabrics.
One-step BERNINA Air Threader (for looper threads) illuminated
One-step BERNINA Air Threader (for looper threads) illuminated Threads the looper threads automatically. While the air threader is activated, a threader light indicates the operating status. The One-Step BERNINA air threader is operated with the BERNINA foot control, leaving both hands free to position the thread over the threader nozzles.
Built-in Needle Threader
Built-in Needle Threader The Built-in Needle Threader located at the needle bar area easily switches to thread the needles.
Color-coded One-path Threading
Color-coded One-path Threading The thread follows one defined path for each stitch. The threading paths are always the same, and color coded.
BERNINA Free Hand System (FHS) with Feed Dog Drop
BERNINA Free Hand System (FHS) with Knee Lifter with Feed Dog Drop Use the knee lever to lower or temporarily raise the presser foot so that both hands remain free to guide the sewing project precisely. When the presser foot is raised, the feed dog automatically lowers, creating additional space under the presser foot.
Needle Stop Up/Down Programmable
Needle Stop Up/Down Programmable Needle Stop Up/Down, programmable via Touch Screen. For each sewing project, program the suitable stop, either to stabilize the project under the foot or to easily remove it.
Swing-out Presser Foot with Auto Swing Back
Swing-out Presser Foot with Auto Swing Back The Presser Foot swings to the left, providing ample space for easy threading, comfortable needle changing and to easily lay the threads under the Presser Foot. When lowering the presser foot with the hand lifter it swings automatically back.
Easy to Engage and Disengage Knife from Outside
Easy to Engage and Disengage Knife from Outside The Knife On/Off Lever is positioned on the outside of the machine. The upper knife is quickly disengaged with one finger when opting not to trim. It is also easily accessible while sewing.
Micro Thread Control (mtc)
Micro Thread Control (mtc) With Micro Thread Control, the over-edge thread length can be set directly resulting in the perfect seam with one quick adjustment.
Speed Control
Speed Control Sewing top speed can be reduced via the Speed Selection Slider to accommodate sewing projects that require slower but even sewing speed.
Sewing Light Switch/Dimmer
Sewing Light Switch/Dimmer The Sewing Light can be switched on/off and dimmed. By default the sewing light is turned on.
Maximum Sewing Speed (stitches per minute)	1200
Maximum Sewing Speed (stitches per minute) Reliable sewing performance, for precise stitching at any speed.

Note:
Not all models and accessories are available in all countries. We reserve the right to make changes in both features and design.

Stitches	18
Stitches A variety of wide and narrow, long and short stitches for all your sewing projects.
Overlock Stitch Width	3-9 mm
Overlock Stitch Width The Overlock Stitch Width is adjustable to suit any fabric type and sewing technique. Wide stitches are suitable to sew and neaten medium to heavy weight fabrics, narrower stitches for medium to light weight and fine fabrics.
Stitch length	0.8 - 4.5 mm
4-Thread Overlock with Integrated Safety Seam	1
4-Thread Overlock with Integrated Safety Seam The 4-Thread Overlock is a sturdy and strong stitch, most often used for durable and elastic seams in knits and stretchy fabrics. It is suitable for apparel, especially for sportswear, and home textiles.
3-Thread Super Stretch Stitch	1
3-Thread Super Stretch Stitch The 3-Thread Super Stretch Stitch creates overlock seams for super stretchy and two-way-stretch fabrics used for gymnastic or swimwear. An especially soft stitch, ideal for lingerie and gymnastic wear, is achieved by using a texturized nylon thread in the looper (and needles). Decorative threads are used to neaten and create reversible edges.
3-Thread Overlock Wide (LN)	2
3-Thread Overlock Wide (LN) The 3-Thread Overlock is a balanced seam and also ideal for neatening edges, hems and facings, quicksewn edge finishing and effect seams. Wide 3-Thread Overlock is suitable for strong woven fabrics, pile, furry materials or sturdy knits, for garments and decorative projects.
3-Thread Overlock Narrow (RN)	2
3-Thread Overlock Narrow (RN) The 3-Thread Overlock is a balanced seam and also ideal for neatening edges, hems and facings, quicksewn edge finishing and effect seams. Narrow 3-Thread Overlock is suitable for fine to medium weight fabric neatening, t-shirts, children's garments, lingerie and fine home textiles.
3-Thread Flatlock Wide (LN)	2
3-Thread Flatlock Wide (LN) The 3-Thread Flatlock is a flat, slightly stretchy seam that is sewn on the right side of the fabric and is especially ideal for creative overlock projects in combination with decorative threads. The wrong side of the stitch is known as "ladder stitch" and also used for decorations or base to weave tape or cord into the stitch. A wide 3-Thread Flatlock is used in medium to heavy weight fabrics. Suitable for patchwork, apparel and sportswear and home textiles
3-Thread Flatlock Narrow (RN)	2
3-Thread Flatlock Narrow (RN) The 3-Thread Flatlock is a flat, slightly stretchy seam that is sewn on the right side of the fabric and is especially ideal for creative overlock projects in combination with decorative threads. The wrong side of the stitch is known as "ladder stitch" and also used for decorations or as a base to weave tape or cord into the stitch. A narrow 3-Thread Flatlock is used in medium to light weight fabrics. Suitable for patchwork, apparel, sportswear, lingerie and home textiles.
3-Thread Narrow Seam	1
3-Thread Narrow Seam The 3-Thread Narrow Seam is used for fine fabrics or see-through materials like silk, cotton or synthetic fabrics. It can be used for pintucks in heirloom projects and as a decorative fine edge finish, e.g. with two different shades of embroidery thread in the loopers. Suitable for inserting lace, light weight apparel, blouses, children's garments, accessories.

3-Thread Rolled Hem	1
3-Thread Rolled Hem A rolled hem is an attractive and quickly sewn decorative edge finish, for example with embroidery thread in the loopers. The rolled hem can also be used for pintucks in heirloom projects. Suitable for accessories, ruffles, light weight outerwear, home textiles.
3-Thread Picotstitch	1
3-Thread Picotstitch The 3-Thread Picotstitch is an attractive and quickly sewn edge for light weight woven and knitted fabrics. Suitable for scarfs, bridal wear and ruffles, home textiles and decorative craft projects.
2-Thread Wrapped Overlock Wide (LN)	2
2-Thread Wrapped Overlock Wide (LN) The 2-Thread Wrapped Overlock is a reversible stitch, ideal for neatening single layers of fabric, seams, hems and facings or as a decorative element with woven or fleecy fabrics or firm knits. The wide stitch is suitable for medium weight to heavy weight fabrics and threads.
2-Thread Wrapped Overlock Narrow (RN)	2
2-Thread Wrapped Overlock Narrow (RN) The 2-Thread Wrapped Overlock is a reversible stitch, ideal for neatening single layers of fabric, seams, hems and facings or as a decorative element with woven or fleecy fabrics or firm knits. The narrow stitch is suitable for medium weight to light weight fabrics and medium weight to finer threads.
2-Thread Flatlock Wide (LN)	2
2-Thread Flatlock Wide (LN) The 2-Thread Flatlock is a highly stretchy and flat stitch, often used with decorative threads or texturized nylon thread for lingerie, swimwear and gymnastic wear. The wide stitch is suitable for medium to heavy weight woven and knitted fabrics, patchwork, apparel and craft projects.
2-Thread Flatlock Narrow (RN)	2
2-Thread Flatlock Narrow (RN) The 2-Thread Flatlock is a highly stretchy and flat stitch, often used with decorative threads or texturized nylon thread for lingerie, swimwear and gymnastic wear. The narrow stitch is suitable for medium to light weight woven and knitted fabrics, patchwork, apparel and craft projects.
2-Thread Rolled Hem	1
2-Thread Rolled Hem With rolled hems, achieve fine edge finishing on hems, ruffles and flounces, ideal for bridal wear, or lingerie. With Differential Feed, stretching, it is often used as lettuce edge finish in knits.
2-Thread Overlock Wide (LN)	2
2-Thread Overlock Wide (LN) The 2-Thread Overlock is ideal for neatening fine single layers of fabric and ensures no seam puckering. The wide stitch is suitable also for heavier weight but loosely woven fabric neatening with texturized nylon or universal thread, use for apparel or home textiles.
2-Thread Blanketstitch Wide (LN)	2
2-Thread Blanketstitch Wide (LN) The 2-Thread Blanketstitch is used on ready-made blankets or on heavier fabrics with longer stitch and maybe more cutting width and with decorative threads in needle and looper. Suitable for medium to heavy weight fabrics and knits, pile and furry material, decorative finishing on apparel, coats, jackets and home textiles.
2-Thread Blanketstitch Narrow (RN)	2
2-Thread Blanketstitch Narrow (RN) The 2-Thread Blanketstitch is used on ready-made blankets or on heavier fabrics with longer stitch and maybe more cutting width and with decorative threads in needle and looper. Suitable for medium weight and soft fabrics and knits, pile and furry material, decorative finishing on apparel, coats, jackets and home textiles.

Motor	DC
Motor The DC Motor with BERNINA Foot Control enables slow and steady sewing, even Stitch-by-Stitch sewing or half stitch sewing (needle up/down). The AC motor is the industry standard and allows continously variable sewing speed with the Foot Control.
Space to the Right of the Needle	114 mm
Space to the Right of the Needle More space to the right of the needles offers comfort and more flexibility when stitching large and small projects. Ideal for handling from the right when the left hand is holding fabric and notions in place.
Maximum Sewing Speed (stitches per minute)	1200
Maximum Sewing Speed (stitches per minute) Reliable sewing performance, for precise stitching at any speed.

Differential Feed 0.7 - 2
Differential Feed 0.7 - 2 Differential Feed ensures wave-free seams in knits and prevents puckering in fine fabrics, while allowing deliberate gathering as an option. With an easily accessible dial outside right, adjustments to the fabric feed can be made even while sewing.
3-step Presser Foot Pressure Adjustment
3-step Presser Foot Pressure Adjustment Presser Foot Pressure is adjustable to accommodate sheer to thick fabrics for optimum feed of all sewing projects.
Weight of machine	9.9 kg

One-step BERNINA Air Threader (for looper threads) illuminated
One-step BERNINA Air Threader (for looper threads) illuminated Threads the looper threads automatically. While the air threader is activated, a threader light indicates the operating status. The One-Step BERNINA air threader is operated with the BERNINA foot control, leaving both hands free to position the thread over the threader nozzles.
Built-in Needle Threader
Built-in Needle Threader The Built-in Needle Threader located at the needle bar area easily switches to thread the needles.
Color-coded One-path Threading
Color-coded One-path Threading The thread follows one defined path for each stitch. The threading paths are always the same, and color coded.
BERNINA Free Hand System (FHS) with Feed Dog Drop
BERNINA Free Hand System (FHS) with Knee Lifter with Feed Dog Drop Use the knee lever to lower or temporarily raise the presser foot so that both hands remain free to guide the sewing project precisely. When the presser foot is raised, the feed dog automatically lowers, creating additional space under the presser foot.
Needle Stop Up/Down Programmable
Needle Stop Up/Down Programmable Needle Stop Up/Down, programmable via Touch Screen. For each sewing project, program the suitable stop, either to stabilize the project under the foot or to easily remove it.
Automatic Needle Stop Up
Automatic Needle Stop Up The needle always stops in the highest position at the end of each stitch. Ideal to thread the needles, position or remove the sewing project.
Swing-out Presser Foot with Auto Swing Back
Swing-out Presser Foot with Auto Swing Back The Presser Foot swings to the left, providing ample space for easy threading, comfortable needle changing and to easily lay the threads under the Presser Foot. When lowering the presser foot with the hand lifter it swings automatically back.
Easy to Engage and Disengage Knife from Outside
Easy to Engage and Disengage Knife from Outside The Knife On/Off Lever is positioned on the outside of the machine. The upper knife is quickly disengaged with one finger when opting not to trim. It is also easily accessible while sewing.
Micro Thread Control (mtc)
Micro Thread Control (mtc) With Micro Thread Control, the over-edge thread length can be set directly resulting in the perfect seam with one quick adjustment.
Thread Tension Adjustment
Thread Tension Adjustment Infinitely variable and easily adjustable, the Thread Tension Dials ensure quick and accurate set-up for all projects.
Stitch Length Adjustment
Stitch Length Adjustment With a variable, easily accessible, numbered dial on the exterior of the machine, stitch length can be adjusted, even while sewing.
Stitch Length Fine Adjustment for Rolled Hem
Stitch Length Fine Adjustment for Rolled Hem The Stitch Length Adjustment between 0.8 and 1.5 is very fine, so that rolled hems can be fine-tuned in delicate fabrics for the perfect match of fabric and thread.
Differential Feed Adjustment
Differential Feed Adjustment Differential Feed ensures wave-free seams in knits and prevents puckering in fine fabrics, while allowing deliberate gathering as an option. With an easily accessible dial outside right, adjustments to the fabric feed can be made even while sewing

Cutting Width
Cutting Width The Cutting Width Dial on the front of the machine can be adjusted to accurately set up seam width, and is adjustable even while sewing
Rolled Hem Selection Lever
Rolled Hem Selection Lever The Rolled Hem Selection Lever is built in next to the Stitch Plate and eases switching to a Rolled Hem stitch and back to overlock by simply moving the Rolled Hem Selection Lever.
Stitch-by-Stitch Sewing
Stitch-by-Stitch Sewing The DC Motor provides consistent needle penetration at any speed, from sewing fine single layer to heavy multi-layer fabrics. In particular, it also allows for slow, precise sewing.
Automatic Needle Stop Up
Automatic Needle Stop Up The needle always stops in the highest position at the end of each stitch. Ideal to thread the needles, position or remove the sewing project.
2-step Presser Foot Lifter
2-step Presser Foot Lifter The 2-Step Presser Foot Lifter provides additional clearance under the foot when placing multiple layers or bulky fabrics.
Thread Cutter
Thread Cutter The Thread Cutter with clamp function is conveniently positioned on the outside of the machine. It cuts thread chains and loose threads neatly. It holds the thread chain out of the way ready to start the next seam.
Integrated Upper Looper Converter
Integrated Upper Looper Converter Easily set up for applications without upper looper thread with the built-in Upper Looper Converter. To engage, flip to the left and insert into the looper eye. To disengage, push out of looper eye and flip to the right until it clicks into lowest position.
Speed Control
Speed Control Sewing top speed can be reduced via the Speed Selection Slider to accommodate sewing projects that require slower but even sewing speed.
Workspace height	83 mm
Workspace height More overlocking space to the right of the needles offers comfort and more flexibility when stitching large and small projects. Allows for easy access to presser foot lifter and needles with the right hand. Ideal for handling from the right when the left hand is holding fabric and notions in place over the Freearm.
Sewing Light Switch/Dimmer
Sewing Light Switch/Dimmer The Sewing Light can be switched on/off and dimmed. By default the sewing light is turned on.
Sewing light
Magnetic Tool Holder
Magnetic Tool Holder Conveniently store metallic accessories, such as the tweezers or some small scissors, temporarily with the magnet under the spool stand.

Accessories

Unleash your creativity with the included accessories and be prepared for any creative challenge with a huge variety of optional accessories.

Included
Compatible

Standard accessories L 660

Here you will find an overview of the standard accessories for the BERNINA L 660.

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Standard Overlock Foot #L11

The Standard Overlock Foot #L11 can be used for all overlock stitches and general sewing projects. The presser foot has an adjustable and open tape guide.

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Slide-on Table

The Slide-on Table is used to enlarge the sewing area to the left of the sewing area. It makes guiding large fabrics easier and offers a better view of the sewing project.

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BERNINA Tweezers

BERNINA Tweezers allow you to thread your overlocker with ease and remove any remaining pieces of thread from the machine.

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Brush/Needle Inserter

This tool helps to remove dust and lint from the looper and stitch-plate area.

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Screwdriver

This screwdriver has a diameter of 1.5 mm and has a hex head.

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Spool Stabilizer

The Spool Stabilizer prevents spools and cones of various sizes from vibrating at any sewing speed.

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CS Lock Tool

With the CS Lock Tool, the needle threads can be pulled out from under the foot more easily and without damaging the fabric.

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Overlocker Oil

Regular care ensures the flawless operation of the overlocker. Lubricating with this convenient Overlocker Oil is an important part of it.

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Knee lifter/Free Hand System (FHS)

The Knee lifter/Free Hand System (FHS) lets you raise the presser foot with your knee. Especially recommended for delicate fabrics.

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Cut-offs Bin

The cut-offs bin keeps the sewing table tidy. Simply click it on to the looper cover and dispose of fabric waste immediately after cutting. It can also be used to store the foot control.

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Accessories for Overlocker

BERNINA Special accessories for overlocker let you equip your serger to your own individual requirements and apply creative techniques with flair and precision.

See all

Note:
Not all models and accessories are available in all countries. We reserve the right to make changes in both features and design.

Support for your BERNINA L 660

To ensure that you enjoy your BERNINA for as long as possible, we recommend that you read the detailed operating instructions. Further support information and firmware updates can be found on the support page.

Download manual Support page BERNINA L 660

BERNINA L 660

Easy overlocking

BERNINA L 660 – exploring new possibilities with ease

"The L 660 proves that overlockers do not have to be difficult. It's not necessary."

Getting started has never been so comfortable

Convenient handling

Sew as you like

Precision in every detail

Everything in view and within reach

Clever, spacious and compact by design

Extremely fast, precise & quiet

Personal advice at your Local BERNINA Store

Explore the BERNINA L 660

Features & Functions

Stitches

Overlock Stitch Width

One-step BERNINA Air Threader (for looper threads) illuminated

Built-in Needle Threader

Color-coded One-path Threading

BERNINA Free Hand System (FHS) with Knee Lifter with Feed Dog Drop

Needle Stop Up/Down Programmable

Swing-out Presser Foot with Auto Swing Back

Easy to Engage and Disengage Knife from Outside

Micro Thread Control (mtc)

Speed Control

Sewing Light Switch/Dimmer

Maximum Sewing Speed (stitches per minute)

Stitches

Overlock Stitch Width

4-Thread Overlock with Integrated Safety Seam

3-Thread Super Stretch Stitch

3-Thread Overlock Wide (LN)

3-Thread Overlock Narrow (RN)

3-Thread Flatlock Wide (LN)

3-Thread Flatlock Narrow (RN)

3-Thread Narrow Seam

3-Thread Rolled Hem

3-Thread Picotstitch

2-Thread Wrapped Overlock Wide (LN)

2-Thread Wrapped Overlock Narrow (RN)

2-Thread Flatlock Wide (LN)

2-Thread Flatlock Narrow (RN)

2-Thread Rolled Hem

2-Thread Overlock Wide (LN)

2-Thread Blanketstitch Wide (LN)

2-Thread Blanketstitch Narrow (RN)

Motor

Space to the Right of the Needle

Maximum Sewing Speed (stitches per minute)

Differential Feed 0.7 - 2

3-step Presser Foot Pressure Adjustment

One-step BERNINA Air Threader (for looper threads) illuminated

Built-in Needle Threader

Color-coded One-path Threading

BERNINA Free Hand System (FHS) with Knee Lifter with Feed Dog Drop

Needle Stop Up/Down Programmable

Automatic Needle Stop Up

Swing-out Presser Foot with Auto Swing Back

Easy to Engage and Disengage Knife from Outside

Micro Thread Control (mtc)

Thread Tension Adjustment

Stitch Length Adjustment

Stitch Length Fine Adjustment for Rolled Hem

Differential Feed Adjustment

Cutting Width

Rolled Hem Selection Lever

Stitch-by-Stitch Sewing

Automatic Needle Stop Up

2-step Presser Foot Lifter

Thread Cutter

Integrated Upper Looper Converter

Speed Control

Workspace height

Sewing Light Switch/Dimmer

Magnetic Tool Holder

Accessories

Standard accessories L 660​

Standard Overlock Foot #L11

Slide-on Table

BERNINA Tweezers

Standard accessories L 660