Bernina L 660 Overlock Serger Machine
Can't buy online?
BERNINA machines require in-person service. Call us to schedule a demo.
Can't buy online?
BERNINA machines require in-person service. Call us to schedule a demo.
Arriving August 2026
Pre-order in store. Pricing available in store.
The BERNINA L 660 is a powerful overlock serger built for working with a wide variety of threads and fabrics. Stretchy, knit, delicate, and heavy materials are all handled with precision and ease using 2, 3, or 4 threads. The illuminated One-Step BERNINA Air Threader, integrated BERNINA Free Hand System with Feed Dog Drop, and Micro Thread Control (mtc) make the L 660 one of the most comfortable and capable overlockers available — and Swiss-engineered to last.
Join Serena, Anna, and Christin on their trip to Zurich, where they discover the new L 660 and put it to the test on their individual projects.

Hold the threads over the Air Threader, press the foot control, and threads are drawn in by air. Thread in any sequence — no handwheel turning required.

Raise and lower the presser foot hands-free with the knee lever while simultaneously dropping the feed dogs — effortlessly position and remove any project.

Sew precisely stitch by stitch or at full speed up to 1,200 SPM. The back-kick function on the BERNINA foot control raises or lowers the needle with ease.




Sew fast or stitch by stitch with equal precision — especially useful for perfect seams in corners and curves.
| Machine Type | Overlock serger — 2, 3, or 4 thread |
| Stitch Patterns | 18 total — 4-thread overlock, 3-thread overlock (wide/narrow), 3-thread super-stretch, 3-thread flatlock (wide/narrow), 3-thread narrow seam, 3-thread rolled hem, 3-thread picot stitch, 2-thread overlock (wide/narrow), 2-thread flatlock (wide/narrow), 2-thread rolled hem, 2-thread wrapped overlock (wide/narrow), 2-thread blanket stitch (wide/narrow) |
| Stitch Width | 3–9 mm (overlock); adjustable while sewing |
| Stitch Length | 0.8–4.5 mm; adjustable while sewing |
| Differential Feed | 0.7–2; fully adjustable while sewing |
| Maximum Speed | 1,200 stitches per minute |
| Workspace | 4.5" (114 mm) to the right of the needle; 3.25" (83 mm) workspace height |
| Motor | DC — powerful, quiet, consistent |
| Weight | 9.9 kg |
| Key Features | One-Step BERNINA Air Threader with light, integrated needle threader, FHS with Feed Dog Drop, mtc Micro Thread Control, programmable needle stop up/down, swing-out presser foot, 2-step presser foot lifter, color-coded one-path threading, rolled hem lever, upper looper converter, magnetic tool holder, dimmable sewing light |
| Standard Accessories | Overlock Foot with Tape Guide #L11, Slide-on Table, looper cover with cut-offs bin, BERNINA foot control with back-kick, tweezers, manual needle threader/inserter, needle set ELX705 CF, brush, screwdriver, CS Lock Tool, knee lifter, spool net, spool cap, spool stabilizer, overlocker oil, dust cover |
Explore the full BERNINA collection at Flash Sew & Quilt, with locations in Jupiter, Naples, and Sarasota, FL. Our certified BERNINA technicians are on staff to demo the L 660 and help you find the right serger for your work.