Drum roll, please! We are super excited to introduce you to our new BERNINA L 850 overlocker/serger. Learn about the stunning air threading machine, including one-path threading functionality and many more amazing functions

The long awaited BERNINA air threading overlocker has finally arrived! This is a milestone in the company’s history—as this is 100% designed and engineered in Switzerland and made in the BERNINA factory in Thailand. There are so many things that make this machine unique, but true to our tradition, the user experience and precision performance are the pillars of its design.
The L 850 is a 2-, 3-, 4-thread Overlock machine that comes loaded with comfort features. The air threader is operated using the BERNINA Foot Control. This is the same foot control and power supply used on BERNINA sewing machines—which means that they are interchangeable between machines. I move machines from place to place a lot in my sewing space, so it is convenient to keep the power supply stationary and just move machines. Let’s take a look at how the machine threads and the features that make is so simple.

Bernina has been passionately dedicated to the development and manufacturing of high-quality sewing machines since 1893. Bernina is proud to present a new milestone in its history—the Bernina L 8 Series Overlockers. The L8 Series machines are 100% designed and engineered in Switzerland and packed with a ton of convenient features for ease of use, including the Bernina One-Step Air Threader.

It's a BERNINA! Developing and manufacturing the revolutionary L 890 and L 850 overlocker


Features:
  • One-step Bernina Air Threader (for looper threads)
  • Extremely fast, precise and quiet
  • Convenient freearm
  • Total Stitch Control for perfect seams
  • Large sewing space
  • 18 built-in stitches
  • Included extension table
  • 2, 3, or 4 threads
  • Bernina 3rd arm(knee Lift for presser foot)
  • Tool storage in the front of the machine
  • A swing-away foot for easy needle threading
  • Attachable scrap catcher
  • Bernina Free Hand System (FHS) with knee lifter
  • Easy to engage and disengage the knife from outside
  • 143 mm sewing space to the right of the needle
  • Automatic needle stop up
  • Workspace height: 86 mm (3 3/8")
  • Swing-out presser foot with auto swing back

    One-Step Bernina Air-Threading The looper threads are moved through the machine by air with one simple step on the foot control. The L850 automatically sets the loopers in the correct position of the air threader—no turning the handwheel or searching for the right position.
  • Threads the two bottom threads
  • Guides the thread through the machine with air
  • Error-proof!

    Sew in Comfort 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.
  • Raise and lower presser foot easily
  • Leaves both hands free to guide the fabric
  • Presser foot swings out, allowing for easy access to the needles

    Total Stitch Control for Perfect Seams The L850 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.
  • Individually adjustable settings for Total Stitch Contro
  • Perfect for working with various fabrics and threads in any combination
  • Fully adjustable differential feed

    Extremely Fast, Precise, and 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 quite the BERNINA L850 sews.
  • Sew up to 1,500 stitches per minute
  • Strong, consistent, and precise at any speed
  • Extremely quiet

    Quick ThreadingThe 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.
  • One-path, color-coded threading
  • Automatic needle stop up function
  • Integrated needle threader

    Large Sewing Space The space offered on the L850 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.
  • 5 5/8" right to the needle
  • Easy on/off extension table included

    One-Path Threading:
    To begin threading, raise the retractable thread stand to the highest position. Raise the presser foot—this will open the tension disks in the machine making it easy to thread and re-thread. The machine follows a color-coded thread path and every stitch on this machine has one-path threading. This means you will not need to move spools of thread or change order to achieve different stitches. One-path threading has been featured on previous BERNINA Overlockers as well.
  • US Warranty 5 year limited warranty on defects in materials and workmanship.
  • Non-US Warranty: 30 days parts and labor
Specifications
Bernina L850 Brochure

BERNINA L 850 - Support Information
This section provides support such as installation instructions, firmware downloads, product manuals and simulators.

Stitch Variations:
  • Total number of stitches: 18
  • 4-thread overlock
  • 3-thread overlock (wide/narrow): 2
  • 3-thread super-stretch: 1
  • 3-thread flatlock (wide /narrow): 2
  • 3-thread narrow seam
  • 3-thread rolled hem
  • 3-thread picot stitch
  • 2-thread overlock (wide/narrow): 2
  • 2-thread flatlock (wide / narrow ): 2
  • 2-thread rolled hem
  • 2-thread wrapped overlock (wide /narrow): 2
  • 2-thread blanket stitch (wide/narrow): 2

    Technical Specifications:
  • 3–9 mm overlock seam width
  • Weight of machine: 27 lbs.
  • 6-step presser foot pressure
  • DC motor
  • 1500 SPM

    L850 Main Features and Threading Demonstration


    Andrea Müller Introductory Video


    Andrea Müller talks more about the L850


    Getting started with BERNINA L 850


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


    BERNINA L850 Needle Change


    BERNINA L850 Needle Threading


    BERNINA L850 Looper Threading


    BERNINA L850 Looper Thread Change and Alternative Threading Methods


    BERNINA L850 Cleaning and Oiling


    BERNINA L850 Stitch Length, Differential Feed, Gathering


    BERNINA L850 Cutting Width, mtc Micro Thread Control, Rolled Hem


    L 850 Overlocker Serger 2 Thread Blanket Stitch, 2 Thread Overlock


    L 850 Overlocker Serger Stitch Optimization 3 Thread Superstretch, 2 Thread Wrapped Overlock


    L 850 Overlock Stitch Optimization 3 Thread Rolled Hem with Metallic Thread


    L 850 Overlocker Serger Needle Threading


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


    L 850 Overlocker Serger Stitch Length, Differential Feed, Gathering


    L 850 Overlocker Serger Stitch Optimization 2 Thread Flatlock, 2 Thread Overlock, Blanket Stitch


    L 850 Overlocker Serger Stretchy Seams and Neatening Edges with 4 and 3 Thread Overlock


    L 850 Overlocker Serger Stitch Optimization 4 and 3 Thread Overlock


    The One-step BERNINA Air Threader


    BERNINA L 850 overlocker - Free Hand System FHS


    BERNINA L 850 overlocker - Needle Threader


    BERNINA L 850 overlocker – Freearm


    L 850 Overlocker/Serger: Upper Looper Converter


    BERNINA Overlocker?Serger L850: Video Tutorials, Tips, and Tricks


    Pam Mahshie Featured on the Allbrands Show 8/24/2020


    L 850 mtc micro thread control
Included Accessories
Included Accessories:
  • Standard Presser Foot Overlock #L10
  • Instruction Manual
  • Quick Reference Guide
  • Power Cord
  • Bernina Foot Control
  • Free Hand System (Kneelifter)
  • Slide-on Table
  • Attachable Scrap Catcher
  • Right Seam Guide
  • Accessories Box
  • Overlocker Oil
  • Spool Stabilizers (4)
  • Spool Caps (4)
  • Spool Nets (4)
  • Torx T10 Screwdriver
  • Threading Wire
  • Dust Cover

    Additional Accessories (Found in Threader Cover):
  • Needle Set ELx705 CF
  • Screwdriver, hex, l.5 mm
  • Brush
  • BERNINA Tweezers
  • Needle Threader/Inserter
Other Images

icon Bernina L850 2/3/4 Thread

icon Bernina L850 2/3/4 Thread Freearm Overlocker Serger 3-9mm Wide 1Step Jet Air Looper Threading, Needle Threader, Knee Lift, Swing Foot, Extension Table

icon 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 quite the BERNINA L 850 sews.

icon Functional Freearm for cuffs, sleeves, pantlegs, etc.

icon Threading the loopers on this machine is a dream come true. By operating the air threader with the BERNINA Foot Control, your hands remain free to do other things. You can even thread both loopers at one time, if you are so inclined. Turn the air threader connector knob to the left to set the machine for threading. Then press the foot control. The machine has a feature called Pulse Drive. What this means is that the machine will slowly sew into the correct position for threading when pressing on the foot control. You do not need to move the handwheel to set the machine for threading. Once the air threader pipes are closed, you will hear the air threading motor—it is a nice quiet sound. Hover the end of the looper threads over the air threading nozzles and the powerful air threader will actually pull the thread into the nozzle and through the looper eye. You will need a length of thread approximately 20-25” in length to clear the looper eye. The key advantage here is how smooth and unfussy this whole process becomes–the entire looper threading process is achieved with just One-Step!

icon Hover the end of the looper threads over the air threading nozzles and the powerful air threader will actually pull the thread into the nozzle and through the looper eye

icon The key advantage here is how smooth and unfussy this whole process becomes–the entire looper threading process is achieved with just One-Step!

icon Built-In Needle Threader In addition to the ease of threading the loopers, the L 850 also has a built-in needle threader. This needle threader easily toggles back and forth for threading either the right or left needle. Having 5-3/8” of space to the right of the needles gives you ample room to move around the machine. The bright LED lighting provides optimal visibility for threading and sewing. And there’s more! The machine has a presser foot that swings out for convenient access to the needles and for placing the threads under the presser foot. The machine is specified to sew using ELx705 needles in sizes from 70/10- 90/14.

icon And there’s more! The machine has a presser foot that swings out for convenient access to the needles and for placing the threads under the presser foot. The machine is specified to sew using ELx705 needles in sizes from 70/10- 90/14.

icon Total Stitch Control Once you have finished threading the machine, you will still have the flexibility to alter all the settings for each stitch. BERNINA sewing machines offer total stitch control and so does this overlocker. The tension dials across the front of the machine are large and easy to adjust. The stitch length and differential feed are located on the outside of the machine. The large ergonomic dials are adjustable even while sewing.

icon The stitch length and differential feed are located on the outside of the machine. The large ergonomic dials are adjustable even while sewing.

icon The cutting knife is driven from below the stitch plate and the cutting width adjustments can be made using one hand on the easy to turn dial located on the front of the machine. With the ability to create stitch widths from 3-9mm, the widest in the industry, you will have a lot of variety in the stitch you make. A feature unique to BERNINA is called Micro Thread Control or mtc. This allows for the fine tune ajdustment of the stitch finger left and right. In conjunction with the cutting width, you can use the mtc to achieve the perfect stitch width while controlling exactly where the threads meet the edge of the fabric.

icon A feature unique to BERNINA is called Micro Thread Control or mtc. This allows for the fine tune ajdustment of the stitch finger left and right. In conjunction with the cutting width, you can use the mtc to achieve the perfect stitch width while controlling exactly where the threads meet the edge of the fabric.

icon Comfort Features This machine comes standard with a large slide-on extension table that when removed, will reveal a freearm. Using the machine for the first time and intimidated by the sewing speed? No problem. You can regulate the top speed by flipping a switch to lower the speed from 1500 spm to 650 spm.

icon The Free Hand System (FHS) is a knee lifter that will lower and raise the presser foot while you are working to place the fabric in just the right position. Ever since learning to use this feature on my sewing machine, I have wanted it on an overlocker. Of course it comes with the L 850.

icon Other BERNINA favorites include the built-in storage for accessories found in the threader cover and cut-offs bin for collecting thread and fabric trimmings that attaches to the front looper cover.

icon Other BERNINA favorites include the built-in storage for accessories found in the threader cover and cut-offs bin for collecting thread and fabric trimmings that attaches to the front looper cover.

icon Many things make using the L 850 a true BERNINA experience. All of these things are what add up to make it the ultimate overlocker

icon Use the spool stabilizers for large cones of serger thread.

icon If using standard smaller spools of thread, place a cap on top to help keep the spool in place. Like a sewing machine, overlockers are all about smooth thread delivery but with more thread and higher speeds.

icon Bernina Foot Control

icon Easy access to tools inside front cover where they won't get misplaced.

icon 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.

What is the main difference between the BERNINA L 850 and the BERNINA L 890
machines?

The BERNINA L 850 is a true overlock machine with the ability to stitch using two,
three, or four threads. The BERNINA L 890 includes both; overlock along with chain /cover stitching. It is the only machine with true stitch automation and many other fabulous features. You can find them all here.

What kind of threads can I use in AirThreading?
There are a wide variety of threads that can be used with the On-step BERNINA Airthreading that include 12 wt cotton, rayon and metallic decorative threads as well as textured poly and nylon threads.The mechanism will simply pull the thread through without forcing it into a port.

Can I use a household needle on the BERNINA L 850 and the BERNINA L 890?
Yes, you can use a household needle when serging with the L 850 or L 890. The recommended needle system is ELX705 which gives the very best stitch. We will share more information on WeAllSew regarding the differences that perfect the stitches when using the proper needle.

What is the benefit of total stitch control?
Total stitch control empowers each user to the creative uses for each and every stitch using One-path Threading. You can even create your own signature stitch and save up to 100 in the memory and label them.

What does MTC stand for?
Micro Thread Control allows you to fine tune stitches while it supports the edge of the fabric as stitches are formed.

What is the speed each machine stitches?
You can stitch fast 250-1500 spm or stitch by stitch for precision using the Needle Up/Down feature along with the BERNINA foot control.
Andrea Müller, Switzerland
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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