You have just finished sewing a delicate knit top, but the edges are fraying and the seams are pulling. You need a machine that can handle stretch fabrics with professional finish, without the hassle of manual threading. That is exactly where the Bernette B68 Airlock serger comes in. In this review, we evaluate the B68 alongside two other Bernette airlock models, the B62 and B64, to help you choose the right serger for your sewing room. Whether you are a beginner or an experienced sewist, we cover the key features, performance, and value of each machine. For more on Bernette sergers, check out our bernette B48 funlock coverstitch serger review.

Buying Guide

Air Threading System

Threading a serger can be the most frustrating part of the process. The Bernette Airlock series uses an automatic air threading system that simplifies looper threading. The B68 and B64 both feature this system, while the B62 also includes it. This feature saves time and reduces errors, especially when switching thread colors. If you have struggled with manual threading, this is a game changer.

Stitch Types and Versatility

Different projects require different stitches. The B68 offers 2/3/4/5 thread overlock, chain stitch, and coverstitch, making it highly versatile. The B64 provides 16 built-in stitches, while the B62 focuses on coverstitch and chainstitch. Consider what you sew most often. For heavy duty fabrics like denim, the B68’s 5 thread capability is ideal. Read our guide on best sergers for heavy duty fabric for more details.

Speed and Efficiency

If you sew frequently, speed matters. The B68 and B64 both reach 1300 stitches per minute, allowing you to finish projects quickly. The B62 runs at a similar speed but focuses on coverstitch. High speed is useful for production sewing or when you have multiple garments to finish. The B68’s industrial grade performance is a standout.

Lighting and Workspace

Good lighting reduces eye strain and improves accuracy. The B68 comes with 5 LED lights, while the B62 and B64 also have LED lighting. The B62 includes a large extension table, and the B64 has a slide on table. The B68 offers a large workspace as well. For intricate quilting or embroidery, ample light and space are essential. Explore more options in our best sergers and overlock machines guide.

Final Thoughts

After reviewing all three models, we recommend the Bernette B68 Airlock Serger with easy air for sewists who need maximum versatility with 2/3/4/5 thread overlock and coverstitch capabilities, plus high speed stitching. For those focused on coverstitch and chainstitch for knit fabrics, the Bernette b62 AIRLOCK Coverstitch Machine offers excellent precision and a free hand system. Both machines feature air threading and LED lighting, making them reliable choices for 2026.

Frequently Asked Questions

What is the difference between the Bernette B68 and B64 Airlock sergers?

The B68 offers 2/3/4/5 thread overlock, chain stitch, and coverstitch, while the B64 has 16 built-in stitches. The B68 also includes a free hand system and Micro Thread Control. Both have air threading and 1300 SPM speed. Choose the B68 for more thread options and the B64 for stitch variety.

Is the Bernette B68 Airlock serger good for beginners?

Yes, the automatic air threading and color coded paths make it beginner friendly. The LED lights and adjustable stitch length also help. With practice, beginners can achieve professional results. For more entry level options, see our guide on best entry level sergers.

Can the Bernette B68 handle heavy fabrics like denim?

Yes, the B68 is designed for heavy duty performance with a solid frame and powerful motor. It can handle thick fabrics like denim and canvas with ease. The adjustable presser foot pressure and Micro Thread Control ensure even stitches.

Does the Bernette B68 come with accessories?

The B68 includes essential accessories such as bobbins, needles, spools, and a threader. It also comes with a large slide on table and presser foot kit. Check the product listing for the full accessory list.