BERNINA L 850

BERNINA L 850

The ultimate Overlocker

  • One-step BERNINA Air Threader
  • Extremely fast, precise and quiet
  • Convenient freearm
  • Total Stitch Control for perfect seams
  • Grand sewing space
Discover the BERNINA L 850

BERNINA L 850 – A true masterpiece among sergers

Our Swiss engineers have created a masterpiece, which allows you to thread the machine even faster and more conveniently. Simply press the foot control and you're off!

"The ultimate overlocker" Andrea Müller about the BERNINA L 850
"The ultimate overlocker."Andrea Müller, Textile Designer „Jolijou"

As the designer of the brand “Jolijou”, Andrea Müller creates colorful jersey fabrics and loves bringing them to life in new projects using the BERNINA L 850 overlocker. In particular, the One-step BERNINA Air Threader and the fast sewing speed with perfect stitch quality win this mother of three’s admiration when projects have to be done on a limited schedule.

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The One-step BERNINA Air Threader

The One-step BERNINA Air Threader

  • Simple threading with air
  • Now, you're ready to sew
  • Imaging threading that is actually fun
The looper threads are magically moved through the machine by air with one simple step on the foot control. Now both hands are free to guide the threads. The L 850 automatically sets the loopers in the correct position of the air threader – no turning the handwheel or searching for the right position.

Sew in comfort

Sew in comfort

  • Raise and lower presser foot easily
  • Both hands free to guide the fabric
  • Easy access to the needles thanks to presser foot that swings out
With the BERNINA Free Hand System (FHS) you can raise and lower the presser foot with your knee. In addition, the presser foot easily swings out for convenient access to the needles.

Total Stitch Control for perfect seams

  • Individually adjustable settings for Total Stitch Control
  • Perfect for working with various fabrics and threads in any combination
  • Fully adjustable differential feed
The L 850 offers several settings for Total Stitch Control - all individually adjustable. The best part? You can change all of these settings while sewing - including the thread tension, cutting width, stitch length and Micro Thread Control (mtc).

Extremely fast, precise & quiet

Extremely fast, precise & quiet

  • Sew up to 1,500 stitches per minute
  • Strong, consistent and precise at any speed
  • Extremely quiet
Not only can you sew quickly, but you can also sew stitch-by-stitch, making the flawless production of precise lines and curves a simple process. Plus, you will enjoy how extremely quiet the BERNINA L 850 sews.

Quick threading

Quick threading

  • One-path, color-coded threading
  • Automatic Needle stop up function
  • Integrated Needle Threader
The integrated Needle Threader and automatic needle stop up function make threading the needles simple. You can easily change from an overlock seam to a rolled hem or flatlock seam in no time because the thread remains in the same threading path.

Grand sewing space

Grand sewing space

  • 5 5/8" right to the needle
  • Easy on/off extension table included
  • Convenient freearm
The space offered on the L 850 is generous by any definition. It has more room to the right of the needle and more work space height than any other BERNINA serger. Sew closed items with ease by simply sliding sleeves or cuffs over the convenient freearm.

Get a feel for this fantastic machine

Get a better feel for this incredible machine. Simply click the button below and you will see every stunning angle of the BERNINA L 850.

Take a spin

Take this machine for a spin with our 360° viewer

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, selection of BERNINA Embroidery Software and also in servicing your BERNINA.

Find your local store

Features & Functions

  • Overview
  • Technical Specifications
  • Comfort Features
  • Stitch Variations
BERNINA L 850

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

One-step BERNINA Air Threader (for looper threads)
Freearm
Sewing space to the right of the needle 143 mm / 5 5/8"
BERNINA Free Hand System (FHS) with knee lifter
Easy to engage and disengage the knife from outside
Swing-out presser foot with auto swing back
Workspace height 86 mm / 3 3/8"
Built-in needle threader
Automatic needle stop up
Total number of stitches 18

Product brochure – All information at a glance

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

3– 9 mm overlock seam width
Weight of machine 12.3 kg
6-step presser foot pressure

Product brochure – All information at a glance

Download now
Motor DC
Sewing speed, stitches per minute 1500
One-step BERNINA Air Threader (for looper threads)
Freearm
Sewing space to the right of the needle 143 mm / 5 5/8"
BERNINA Free Hand System (FHS) with knee lifter
Speed selection switch
Integrated upper looper converter
Easy to engage and disengage the knife from outside
Rolled hem lever integrated under stitch plate
Adjustable cutting width while sewing
Thread tension release when presser foot raised
Adjustable thread tension while sewing
2-step presser foot lifter with front-foot-lift
Swing-out presser foot with auto swing back
Workspace height 86 mm / 3 3/8"

Product brochure – All information at a glance

Download now
Built-in needle threader
Color-coded threading path
Needle up/down with BERNINA foot control
Automatic needle stop up
Stitch length fine tuning for rolled hem
Stitch-by-stitch sewing
Micro Thread Control (mtc)
Adjustable stitch length while sewing
Adjustable differential feed while sewing
Safety switch for open cover and raised presser foot
2 LED sewing lights
Thread cutter
Accessories in the threader cover
Total number of stitches 18
4-thread overlock 1
3-thread overlock (wide/narrow) 2
3-thread super-stretch 1
3-thread flatlock ( wide /narrow) 2
3-thread narrow seam 1
3-thread rolled hem 1

Product brochure – All information at a glance

Download now
3-thread picot stitch 1
2-thread rolled hem 1
2-thread wrapped overlock (wide /narrow) 2
2-thread overlock (wide/narrow) 2
2-thread blanket stitch (wide/narrow) 2
2-thread flatlock (wide / narrow ) 2

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 BERNINA L 850

Here you will find an overview of the standard accessories for the BERNINA L 850.

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Standard Overlock Foot #L10 (with Tape Guide) (L 850)

Suitable for overlocking projects where the fabric edge is cut and neatened in a single operation. The presser foot is equipped with an adjustable open tape guide.

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Slide-on Table (L 850/890)

The Slide-on Table for the L 850/890 is used to enlarge the sewing area to the left of the sewing area. It enables easier guidance of large fabrics and 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 (L 850/890)

This tool helps to remove dust and lint from the looper and stitch-plate area of your L 850 and L 890.

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Screwdriver

The Screwdriver makes changing needles simple.

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Spool Stabilizer (L 850/890)

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

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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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Accessories Box (L 850/890)

The large accessory box and the corresponding extension box provide storage space for L 850/ L 890 presser feet and accessories.

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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 (L 850/890)

The Cut-offs Bin keeps the sewing table tidy. Simply click it on to the looper cover and dispose of fabric cut-offs immediately after cutting. 

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Right seam guide (L 850/890)

The right seam guide helps to guide the fabric and ensures that it is cut evenly. 

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Needle Threader/inserter (L 8 Series)

The Needle Threader/inserter makes it easy to hold, insert or remove as well as thread overlocker needles.

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Accessories for Overlocker

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.

Accessories for Overlocker

Standard Overlock Foot (with Tape Guide)

Suitable for most overlock projects, where the fabric edge is cut and neatened in one step. Compatible with L 850 or L 860.

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Clear Overlock Foot #L27 (L 850)

The transparent overlock foot eases precise guiding of fabric, for example for sewing corners or circles. Successful to perfect seams and edge finishes in due course.

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Elasticator Foot #L14 (L 850)

The Elasticator Foot guides and stretches the elastic (max. width 20 mm) as it is being sewn on. Ideal for lingerie, swimwear, sportswear and home textiles.

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Blindstitch Foot #L19 (L 850)

The Blindstitch Foot for the L 850 can also be used for flatlocking folded edges and for heirloom techniques. The adjustable guide plate on the side makes it easier to stitch blind hems.

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Beading and Sequin Foot #L15 (L 850)

With the Beading and Sequin Foot strings of beads and sequins up to a maximum diameter of 6 mm can be sewn on easily and quickly on the L 850.

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Piping Foot #L16S (L 850)

The Piping Foot #L16S is best to create and sew in piping on the L 850. It is used for light fabrics.

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Piping Foot #L16L (L 850)

The piping foot #L16L is best to create and sew in piping on the L 850. It is used for mediumweight to heavy fabrics.

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Cording Foot #L17 (L 850)

On the L 850, thin cords, wire, fishline, pearl or fine yarn can be sewn with the cord sewing foot #L17, for example into a rolled hem.

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Gathering Foot #L18 (L 850)

The Gathering Foot #L18 is suitable for sewing ruffles, whereby the gathered fabric can be sewn to a smooth piece of fabric at the same time.

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Decorative Thread Spool Pin #L26 (L 850/890)

This horizontal spool pin for the L 850/890 holds parallel-wound flanged spools and conventional household spools of decorative and metallic thread. 

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Freearm Cover (L 850/890)

The Freearm Cover is used to cover the opening of the freearm to get a consistent working surface in the sewing area. At the same time, the stitch plate remains easily accessible.

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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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Threading Kit Overlocker/Serger

The threading kit for overlocker simplifies threading along the instruction manual and helps to adjust the optimal seam.

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Overlocker Trolley

The practical Trolley is very sturdy and perfectly suited when you are en route. 

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Decorative Threads Guide #L25 (L 850/890)

This guide is ideal for sewing wide seams and hems with decorative threads on the L 850/890.

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Tutorials

  • Starting to sew
  • Threading
  • Seam variations
  • Stitch optimization
  • Machine Maintenance

  • BERNINA L 850 Overlocker/Serger: Getting Started

    How to get started. How to attach or detach kneelifter, slide-on table, cut-offs bin or presser foot. What are the functions of foot control and knee lifter. How can the presser foot swing out or be detached and attached.

  • BERNINA L 850 Overlocker/Serger: Stitch Selection, Symbols, Operating Elements

    How to read the stitch selection chart and what are the symbols. Where are the operating elements on the machine. Which settings are possible.

  • BERNINA L 850 Overlocker/Serger: Upper Looper Converter

    How to activate the upper looper converter. How to de-activate the upper looper converter. How to sew without upper looper thread.

  • BERNINA L 850 Overlocker/Serger: Getting Started

    BERNINA L 850 Overlocker/Serger: Getting Started

  • BERNINA L 850 Overlocker/Serger: Stitch Selection, Symbols, Operating Elements

    BERNINA L 850 Overlocker/Serger: Stitch Selection, Symbols, Operating Elements

  • BERNINA L 850 Overlocker/Serger: Upper Looper Converter

    BERNINA L 850 Overlocker/Serger: Upper Looper Converter

  • BERNINA L 850 Overlocker/Serger: Looper Threading, Air Threader

    How to thread the loopers. How to use the air threader. How to swing the foot out. How to activate the air threader.

  • BERNINA L 850 Overlocker/Serger: Needle Threading

    How to thread the needles and use the built-in needle threader. How to use the manual needle threader.

  • BERNINA L 850 Overlocker/Serger: Changing Needles

    Which needles are recommended? How to remove or insert the needles. How high are the needles. How to use the manual needle threader. Why tighten the needle set screws.

  • BERNINA L 850 Overlocker/Serger: Looper Thread Change and Alternative Threading Methods

    Looper thread change and alternative threading methods when the yarn can not directly be threaded by air threader. How to use the threading wire when the air threader is blocked. Threads and yarn shall be moving in the air threader pipes freely. Coated yarn/hand-sewing thread is not suitable for air-threader pipes!

  • BERNINA L 850 Overlocker/Serger: Looper Threading, Air Threader

    BERNINA L 850 Overlocker/Serger: Looper Threading, Air Threader

  • BERNINA L 850 Overlocker/Serger: Needle Threading

    BERNINA L 850 Overlocker/Serger: Needle Threading

  • BERNINA L 850 Overlocker/Serger: Changing Needles

    BERNINA L 850 Overlocker/Serger: Changing Needles

  • BERNINA L 850 Overlocker/Serger: Looper Thread Change and Alternative Threading Methods

    BERNINA L 850 Overlocker/Serger: Looper Thread Change and Alternative Threading Methods

  • BERNINA L 850 Overlocker/Serger: Cutting Width, (Stitch Width) mtc, Rolled Hem

    How to adjust the cutting width for various stitches, decorative yarn or wide seams. How to de-activate and activate the knife. Use mtc micro thread control to fine-tune the looper threads to prevent loose loops or fabric tunneling. How to prevent the fabric from rolling unintentionally. How to set for rolled hem to roll the edge intentionally.

  • BERNINA L 850 Overlocker/Serger: Stretchy Seams and Neatening Edges with 4- and 3-Thread Overlock

    How to sew seams with 4- and 3-thread overlock stitches. Neatening fabric edges with 3-thread overlock. How to sew wave free seams in knitwear. How to increase elasticity of stitches.

  • BERNINA L 850 Overlocker/Serger: Stitch Length, Differential Feed, Gathering

    How to adjust the stitch length for various stitches, heavy yarn or fine rolled hems. How to adjust differential feed to prevent soft knits from waving out. How to use differential feed to keep fine woven fabric from puckering. How to adjust differential feed and stitch length for gathering or ruffles in fine fabrics. How to gather both sides regularly.

  • BERNINA L 850 Overlocker/Serger: 3-Thread Superstretch, 2-Thread Wrapped Overlock

    How to sew a 3-thread superstretch stitch. How to sew a 2-thread wrapped overlock.

  • BERNINA L 850 Overlocker/Serger: Rolled Hem with 3 and 2 Threads, Lettuce Edging, Picot Stitch

    How to sew a 3-thread rolled hem. How to sew a 2-thread rolled hem. How to adjust for a picot stitch. How to sew a scalloped edge.

  • BERNINA L 850 Overlocker/Serger: Flatlock with 3- and 2-Threads

    How to sew set and sew flatlock with 3- and 2-threads. What is the advantage of a 2-thread flatlock.

  • BERNINA L 850 Overlocker/Serger: 2-Thread Blanket Stitch, 2-Thread Overlock

    How to set and sew a blanket stitch. How to neaten fabric edges with a decorative 2-thread blanket stitch. How to neaten edges with 2-thread overlock.

  • BERNINA L 850 Overlocker/Serger: Cutting Width, (Stitch Width) mtc, Rolled Hem

    BERNINA L 850 Overlocker/Serger: Cutting Width, (Stitch Width) mtc, Rolled Hem

  • BERNINA L 850 Overlocker/Serger: Stretchy Seams and Neatening Edges with 4- and 3-Thread Overlock

    BERNINA L 850 Overlocker/Serger: Stretchy Seams and Neatening Edges with 4- and 3-Thread Overlock

  • BERNINA L 850 Overlocker/Serger: Stitch Length, Differential Feed, Gathering

    BERNINA L 850 Overlocker/Serger: Stitch Length, Differential Feed, Gathering

  • BERNINA L 850 Overlocker/Serger: 3-Thread Superstretch, 2-Thread Wrapped Overlock

    BERNINA L 850 Overlocker/Serger: 3-Thread Superstretch, 2-Thread Wrapped Overlock

  • BERNINA L 850 Overlocker/Serger: Rolled Hem with 3 and 2 Threads, Lettuce Edging, Picot Stitch

    BERNINA L 850 Overlocker/Serger: Rolled Hem with 3 and 2 Threads, Lettuce Edging, Picot Stitch

  • BERNINA L 850 Overlocker/Serger: Flatlock with 3- and 2-Threads

    BERNINA L 850 Overlocker/Serger: Flatlock with 3- and 2-Threads

  • BERNINA L 850 Overlocker/Serger: 2-Thread Blanket Stitch, 2-Thread Overlock

    BERNINA L 850 Overlocker/Serger: 2-Thread Blanket Stitch, 2-Thread Overlock

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization 4- and 3-Thread Overlock

    The sewing result depends on fabric, threads and needles as well as stitch length and differential feed. To allow the threads to interlock loosely it is recommended to decrease thread tension before increasing other thread tension, to prevent fabric puckering. In this video you will see how to optimize stitches. How to fine tune thread tensions. Why decrease thread tension. How to increase thread tension. How to prevent loose needle thread tension. How to balance looper threads. How to increase the elasticity of the seam

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization 3-Thread Superstretch, 2-Thread Wrapped Overlock

    The sewing result depends on fabric, threads and needles as well as stitch length and differential feed. To allow the threads to interlock loosely it is recommended to decrease thread tension before increasing other thread tension, to prevent fabric puckering. In this video you will see how to optimize stitches. How to fine tune thread tensions. Why decrease thread tension. How to increase thread tension. How to prevent loose needle thread tension. How to balance looper threads. How to increase the elasticity of the seam.

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization: 3-Thread Rolled Hem, Picot Stitch

    The sewing result depends on fabric, threads and needles as well as stitch length and differential feed. To allow the threads to interlock loosely it is recommended to decrease thread tension before increasing other thread tension, to prevent fabric puckering. In this video you will see how to optimize stitches. How to fine tune thread tensions. Why decrease thread tension. How to increase thread tension. How to prevent loose needle thread tension. How to reduce loose loops of the upper looper. How to reduce seam puckering

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization: 3-Thread Flatlock

    The sewing result depends on fabric, threads and needles as well as stitch length and differential feed. To allow the threads to interlock loosely it is recommended to decrease thread tension before increasing other thread tension, to prevent fabric puckering. In this video you will see how to optimize stitches. How to fine tune thread tensions. Why decrease thread tension. How to increase thread tension. How to prevent loose needle thread tension. How to reduce loose loops of the upper looper. How to reduce seam puckering.

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization: 2-Thread Flatlock, 2-Thread Overlock, 2-Thread Blanket Stitch

    The sewing result depends on fabric, threads and needles as well as stitch length and differential feed. To allow the threads to interlock loosely it is recommended to decrease thread tension before increasing other thread tension, to prevent fabric puckering. In this video you will see how to optimize stitches. How to fine tune thread tensions. Why decrease thread tension. How to increase thread tension. How to prevent loose needle thread tension. How to balance looper threads.

  • BERNINA L 850 Overlock: Stitch Optimization: 3-Thread Rolled Hem with Metallic Thread

    The sewing result depends on fabric, threads and needles as well as stitch length and differential feed. To allow the threads to interlock loosely it is recommended to decrease thread tension before increasing other thread tension, to prevent fabric puckering. In this video. How to optimize stitches for a 3-thread rolled hem with metallic thread. How to fine tune thread tensions. Why decrease thread tension. How to increase thread tension. How to prevent loose needle thread tension. How to balance looper threads.

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization 4- and 3-Thread Overlock

    BERNINA L 850 Overlocker/Serger: Stitch Optimization 4- and 3-Thread Overlock

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization 3-Thread Superstretch, 2-Thread Wrapped Overlock

    BERNINA L 850 Overlocker/Serger: Stitch Optimization 3-Thread Superstretch, 2-Thread Wrapped Overlock

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization: 3-Thread Rolled Hem, Picot Stitch

    BERNINA L 850 Overlocker/Serger: Stitch Optimization: 3-Thread Rolled Hem, Picot Stitch

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization: 3-Thread Flatlock

    BERNINA L 850 Overlocker/Serger: Stitch Optimization: 3-Thread Flatlock

  • BERNINA L 850 Overlocker/Serger: Stitch Optimization: 2-Thread Flatlock, 2-Thread Overlock, 2-Thread Blanket Stitch

    BERNINA L 850 Overlocker/Serger: Stitch Optimization: 2-Thread Flatlock, 2-Thread Overlock, 2-Thread Blanket Stitch

  • BERNINA L 850 Overlock: Stitch Optimization: 3-Thread Rolled Hem with Metallic Thread

    BERNINA L 850 Overlock: Stitch Optimization: 3-Thread Rolled Hem with Metallic Thread

  • BERNINA L 850 Overlock: Overlocker/Serger: Maintenance: Cleaning and Oiling

    Tips how to clean the sewing area, knives, loopers and feed dog. How to oil the upper looper. Tips how to clean the air-threader pipes. How to clean the thread cutter.

  • BERNINA L 850 Overlock: Overlocker/Serger: Maintenance: Cleaning and Oiling

    BERNINA L 850 Overlock: Overlocker/Serger: Maintenance: Cleaning and Oiling

Support for your BERNINA L 850

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 850

Sewing project

Discover the reversible bomberjacket, which makes for a totally cool appearance anywhere. It can be sewn together quickly and is definitely an eye-catcher.

To the sewing project

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, selection of BERNINA Embroidery Software and also in servicing your BERNINA.

Find your local store

We want you to love your BERNINA

We challenged ourselves, pushed boundaries, poured over plans and engineered a machine you will love.