Bernina
BERNINA L 660 Overlocker (Serger)
BERNINA L 660 Overlocker (Serger)
SKU: BEL660
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Arriving August 2026
Pre-order in store. Pricing is available in store.
Fast overlocker with one-step air threading
- Up to 1,200 stitches per minute
- One-step air threader for the loopers
- Cutting width up to 9 mm with stepless differential feed
BERNINA L 660: Fast, Precise Overlocking
Professional Overlocking
The BERNINA L 660 creates clean, professional seams, rolled hems, and flatlock using 2, 3, or 4 threads, with 18 stitch patterns at up to 1,200 stitches per minute. A powerful, quiet DC motor delivers consistent piercing power on any fabric.
Effortless Air Threading
- One-Step BERNINA Air Threader for the loopers
- Color-coded one-path threading
- Same threading paths for every stitch
Hold the threads over the air threader, press the foot control, and the threads are drawn in by air. With the needle stop up, the loopers move to the correct position automatically, no handwheel turning required.
Differential Feed and Micro Thread Control
- Stepless differential feed, 0.7 to 2
- mtc Micro Thread Control
- Smooth, pucker-free seams
Stepless differential feed keeps delicate and stretchy fabrics smooth and free from puckering, while Micro Thread Control fine-tunes the looper thread for perfectly balanced stitches, even while you sew.
BERNINA Free Hand System
- Knee lifter raises the presser foot
- Drops the feed dog at the same time
- Both hands stay free to guide the fabric
The built-in Free Hand System lets you raise the presser foot and drop the feed dog with a knee lifter, giving you more clearance and full control when positioning even the thickest fabrics.
Programmable Needle Stop
- Needle stop up or down
- Stitch-by-stitch sewing
- Back-kick foot control
Program the needle to stop up or down, and use the back-kick on the BERNINA foot control to raise or lower the needle by half a stitch for precise starts and stops.
Fast and Precise
Adjustable stitch length and cutting width from 3 to 9 mm, an integrated upper looper converter, and a knife you can deactivate from the outside make the L 660 ready for any seam. A slide-on table is included for larger projects.
Key Features
- 18 overlock stitch patterns: 2, 3, or 4 thread
- One-Step BERNINA Air Threader: threads the loopers at the push of a button
- Up to 1,200 stitches per minute: with stitch width 3 to 9 mm
- Stepless differential feed and Micro Thread Control: balanced seams on any fabric
- BERNINA Free Hand System and slide-on table: hands-free control and more workspace
Specifications
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Special Financing Available
Apply in-store or online through Synchrony Bank.
Flexible payment plans make it easy to get the machine you want.
~$195/mo suggested payments with 18-month special financing*
or call (800) 687-5175
*Suggested monthly payments are estimates only. Actual terms subject to credit approval through Synchrony. See store for details.
Frequently Asked Questions
Is the BERNINA L 660 a serger or a coverstitch machine?
The BERNINA L 660 is an overlocker (serger) only, not a coverstitch machine. It sews 18 stitch patterns using 2, 3, or 4 threads at up to 1,200 stitches per minute. For coverstitch, see the BERNINA L 620. Browse more sergers.
How does threading work on the L 660?
The L 660 has a One-Step BERNINA Air Threader that threads the loopers at the push of a button, plus color-coded one-path threading and a built-in needle threader. The threading paths are the same for every stitch.
What is included with the L 660?
It comes with the Overlock Foot with tape guide L11, a slide-on table, the looper cover with built-in cut-offs bin, a BERNINA foot control, knee lifter, ELX705 CF needles, and the standard tool kit.
When is the L 660 available and how do I order?
The L 660 arrives in September 2026 and is available for pre-order in store. Pricing is not listed online right now. Contact us or visit a Quality Sewing and Vacuum location to reserve yours.
What can the L 660 sew and what warranty applies?
It handles overlock seams, rolled hems, and flatlock on stretch and woven fabrics, with stepless differential feed and a 3 to 9 mm stitch width. It carries a 5-Year BERNINA Comprehensive Limited Warranty plus a 1-Year Quality Sewing in-store service warranty.