Bernina L 850 Overlocker


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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!

One-Step Bernina Air Threader

  • Simple threading with air
  • Now, you're ready to sew

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.

One-Step Bernina Air Threader
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).

Total Stitch Control for perfect seams
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

  • 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.

Quick threading
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.

Selecting the Needle: This machine is designed for needles of the system ELx705 as well as for needle sizes 70-90. It is recommended to use the ELx705 CF (Chrome Finish) version, as it is more durable. The machine runs most reliably with these needles due to the second groove. If required, needles of the 130/7005 H system can also be used. These can provide good results in certain applications and are available with different points and in different needle sizes.

Comfort Features

Total number of stitches
One-step BERNINA Air Threader (for looper threads)
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
2-step presser foot lifter with front-foot-lift
Needle up/down with BERNINA foot control
Stitch-by-stitch sewing
Color-coded One-path Threading
Adjustable thread tension while sewing
Thread tension release when presser foot raised
Micro Thread Control (mtc)
Adjustable stitch length while sewing
Stitch length fine tuning for rolled hem
Adjustable differential feed while sewing
Adjustable cutting width while sewing
Rolled hem lever integrated under stitch plate
Integrated upper looper converter
LED sewing light
Thread cutter
Speed selection switch
Safety switch for open cover and raised presser foot
Accessories in the threader cover

Technical Specifications

Stitch width 3 – 9 mm
6-step presser foot pressure
Maximum sewing speed (stitches per minute)
Weight of machine
27.1 lbs/12.3 kg




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