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The ultimate Overlocker

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


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, 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.

Watch Video

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

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

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

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

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.

Image Gallery: Explore the BERNINA L 850

Features & Functions

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

Total number of stitches                                                                                 18

One-step BERNINA Air Threader (for looper threads) 


Sewing space to the right of the needle                                                   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 

Built-in needle threader 

Automatic needle stop up 

Micro Thread Control (mtc) 

3– 9 mm overlock seam width 

Sewing speed, stitches per minute                                                      400-1500

Product brochure – All information at a glance



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

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 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.

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.


We want you to
love your

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