Bernina L850 Air Thread Overlocker

The Bernina L 850 Overlocker combines Swiss precision with effortless usability. Featuring the One-Step Air Threader for loopers and automatic needle threader, setup is quick and frustration-free. Micro Thread Control (MTC) for perfect tension, and easy switching between 2-, 3-, and 4-thread over-edging stitches, the L850 delivers professional finishes on every fabric. A spacious work area, Free Hand System (FHS), and bright LED lighting make it ideal for garments, activewear, and creative projects. Enjoy flawless seams and a smooth, quiet sewing experience, every time.

Bernina L 850 – Precision, Power, and Effortless Threading
The Bernina L 850 is where professional performance meets pure sewing pleasure. Designed and built in Switzerland, this premium overlocker delivers flawless results on every fabric — from delicate silks and jerseys to thick denim and stretch knits — all with speed, precision, and ease.

At the heart of the L 850 is Bernina’s revolutionary One-Step Air Threader, which makes threading your loopers effortless. Simply insert the thread end, press the foot control, and watch as air guides it perfectly into place through the loopers with no fiddling, no frustration. Combined with the automatic needle threader, setup takes seconds instead of minutes, so you can focus on what you love: sewing.

With a top speed of 1,500 stitches per minute, the L850 sews strong, even seams in record time. Yet it’s incredibly quiet and smooth, thanks to Bernina’s precision engineering. The Micro Thread Control (MTC) feature lets you fine-tune the thread tension and stitch width for perfectly balanced edges, no matter the fabric thickness.

Switching between 2-, 3-, and 4-thread stitches is quick and intuitive, giving you flexibility for everything from simple seam finishing to decorative stitching and rolled hems. The Free Hand System (FHS) with knee lifter lets you raise and lower the presser foot while keeping both hands on your fabric — ideal for tricky corners and curves.

The spacious work area and bright LED lighting make it easy to handle larger pieces and see every detail clearly. The slide-on extension table adds even more support when working on bigger projects, while the freearm design is perfect for sleeves, cuffs, and other tubular sewing tasks.

Whether you’re creating garments, home decor, or activewear, the Bernina L 850 makes professional-quality overlocking effortless. It’s fast, beautifully engineered, and designed to make every stitch look perfect — giving you total confidence in every project.

Stitch Selections

• 4-thread overlock 
• 3-thread overlock  
• 3-thread super-stretch
• 3-thread flatlock  
• 3-thread narrow seam
• 3-thread rolled hem
• 3-thread picot stitch
• 2-thread rolled hem
• 2-thread wrapped overlock  
• 2-thread overlock
• 2-thread blanket stitch  
• 2-thread flatlock  

Key L850 Features

• Total number of stitches - 18
• One-step BERNINA Air Threader for loopers
• Built-in needle threader
• Integrated upper looper converter - for 2 thread stitches
• Sewing space to the right of the needle - 143 mm x 83 mm
• BERNINA Free Hand System (FHS) with knee lifter
• Micro Thread Control (mtc)
• Sleeve arm
• Swing-out presser foot with auto swing back
• Safety power cut-off sensor for front panel and presser foot lift
• 3–9 mm Overlock seam width
• 6-Step presser foot pressure
• Powerful DC Motor
• Sewing speed, 1500 stitches per minute
• 2 LED sewing lights
• Accessories storage inside front cover
• Rolled hem lever
• Adjustable cutting width
• Auto thread tension release when presser foot raised
• 2-step presser foot lifter with front-foot-lift
• One stitch foot control

Accessories

• Standard Presser Foot for overlocking #CL10
• Slide on Extension Table 
• Needle Pack (ELx705 CF)
• Torx T10 Screwdriver – For the needle plate screws
• Spool Discs and Nets
• Accessory Box
• Knife Cover Insert – Protects fingers & deflects fabric cut-offs during sewing
• Waste/Cut Off Bin – All material waste is collected in the removable waste bin
• Free Hand System – Knee lift raises and lowers the presser foot
• Bernina Oil
• Free Arm Sewing Bed
• Bernina Tweezers
• Threading Wire
• Lint Brush
• Screwdriver
• Canvas Dust Cover with pockets
• Spool Stabiliser
• Right Seam Guide – Guides the fabric ensuring even edging
• Needle Threader/Inserter – Easy to hold, insert and remove needles
• UK Power Cable
• BERNINA LV1 Back-Kick Foot Control