Best Overlocker Machines

Professional seam finishes that rival shop-bought clothing are within reach of every home sewer. As the UK's leading sewing machine specialists with over 20 years of experience, we've tested hundreds of overlocker models to find the machines that truly deliver. The right overlocker machine takes your sewing from amateur to accomplished, creating durable seams that stretch with knits, prevent fraying on wovens, and add that polished finish every home sewer dreams of achieving.

Our expert team has personally worked with every machine in this guide at our Cornwall showroom. We've put them through rigorous testing on everything from delicate silks to heavy denims, checking stitch quality, threading ease and long-term reliability. This comprehensive guide covers the best overlocker options for every budget and skill level, featuring trusted brands like Bernina, Janome, Brother and baby lock.

Quick note for international readers: What we call overlockers in the UK are known as sergers in the US – they're the same fantastic machines that cut, sew, and finish seams in one pass.

What Is an Overlocker Machine?

An overlocker (or serger) is a specialist sewing machine that cuts, sews, and finishes fabric edges simultaneously. Unlike regular sewing machines that use two threads, overlockers work with 2, 3, 4, or 5 threads to create strong, stretchy seams that won't fray.

The magic happens through loopers and needles working together. As fabric feeds through the machine, built-in knives trim raw edges while threads lock together to encase the cut edge completely. This prevents fraying and creates the professional finish you see on ready-to-wear garments.

Key benefits of overlocker machines:

• Prevents fabric fraying and extends garment life

• Creates stretchy seams ideal for knits and activewear

• Speeds up garment construction significantly

• Gives professional finishing to home-sewn projects

• Handles multiple fabric layers with ease

Best Overall Overlocker Machine

These three models represent the sweet spot of performance, features, and value. Each offers reliable stitching across different fabric types while providing features that make them suitable for the widest range of sewing projects.

Bernina L460 Overlocker

Best suited for: Experienced sewers wanting professional control and comfort features

The Bernina L460 Overlocker earns its place as our top overall choice through its perfect balance of precision and user-friendly features. The exact speed control up to 1,500 stitches per minute gives you complete command over delicate curves and tricky fabrics. The included slide-on extension table expands your workspace significantly, making it noticeably steadier when handling larger garments like coats or curtains.

What makes it special: The Bernina Free Hand System (knee lift) is rarely found on overlockers and transforms your workflow by allowing hands-free presser foot lifting. This feature alone speeds up pivoting and makes continuous sewing much more comfortable. 

Key features:

• 2/3/4-thread stitch capability with rolled hem

• Exact speed control up to 1,500 spm

• Slide-on extension table included

• Bernina Free Hand System (knee lift)

• Colour-coded threading path with front access

• Differential feed with micro thread control

From: £725.00

Bernina L450 Overlocker

Best suited for: Sewers seeking reliable performance at a more accessible price point

The Bernina L450 Overlocker delivers the same dependable Bernina build quality with forgiving tension control that makes it forgiving for different skill levels. The front-opening design and colour guides create an easy threading experience that reduces setup time and maintenance headaches.

What makes it special: The smooth differential feed prevents ripples on knit seams and creates flat hems consistently. Combined with intuitive tension dials that respond predictably as you change fabrics, this machine builds confidence quickly.

Key features:

• 2/3/4-thread options with rolled hem capability

• Free-arm style work area for tubular pieces

• Front-opening design with colour threading guides

• Smooth differential feed system

• Intuitive, responsive tension dials

• Bright workspace lighting

From: £595.00

baby lock Acclaim Overlocker

Best suited for: Sewers who value set-and-sew convenience and premium consistency

The baby lock Acclaim Overlocker represents the premium end of overall overlocker machines with its ExtraordinAir™ looper air-threading system and Automatic Thread Delivery (ATD). This machine removes most manual tension adjustments, delivering balanced stitches across varied fabrics and thread types with minimal tweaking.

What makes it special: The vertical needle system provides superior penetration power and accuracy, while the ATD system automatically adjusts thread delivery for consistent results. This combination makes it incredibly reliable for production sewing.

Key features:

• ExtraordinAir™ looper air-threading system

• ATD (Automatic Thread Delivery) for automatic tension

• Vertical needle system for power and accuracy

• Precise differential feed with adjustable settings

• Adjustable stitch width and rolled hem settings

• Robust, quiet operation for all fabric weights

From: £1,895.00

Best Overlocker for Beginners

Starting your overlocker journey can feel daunting, but these three beginner-friendly machines make learning straightforward with clear threading systems, forgiving tension controls, and helpful accessories that build confidence from day one.

Janome 9300DX Overlocker

Best suited for: First-time overlocker users seeking simplicity and reliability

The Janome 9300DX Overlocker stands out as the best overlocker for beginners due to its straightforward design and friendly learning curve. The colour-coded threading system and accessible front panel remove the intimidation factor that stops many sewers from trying overlockers.

What makes it special: The combination of simple tension dials and clear colour-coding means less time struggling with setup and more time actually sewing. The differential feed handles knit stability beautifully, giving beginners success with stretchy fabrics right away.

Key features:

• 2/3/4-thread capability with easy rolled hem

• Colour-coded threading with accessible front panel

• Differential feed for knit fabric stability

• Simple lay-in tension dials

• Speed up to 1,300 spm

• Covers most garment finishing needs

From: £335.00

Janome Mylock 454D Overlocker

Best suited for: Beginners who want room to grow their skills with robust feeding

The Janome Mylock 454D Overlocker offers beginner-friendly controls with more robust feeding capabilities than basic models. The quick rolled-hem changeover and smooth handling give new users room to advance their techniques without outgrowing the machine quickly.

What makes it special: The colour-coded threading chart inside the door acts as a constant reference, while manual lay-in tension dials provide predictable, simple adjustments. The adjustable foot pressure helps handle different fabric weights as skills develop.

Key features:

• 3 & 4-thread overlocking plus flatlocking capability

• Quick rolled-hem switch mechanism

• Colour-coded threading chart inside door

• Manual lay-in tension for predictable results

• Adjustable stitch length (1–4 mm) and cutting width

• Differential feed (0.5–2.25) with adjustable foot pressure

From: £429

Brother 3034DWT Overlocker

Best suited for: Budget-conscious beginners who want helpful extras included

The Brother 3034DWT Overlocker makes the list as an appealing entry-level option that includes confidence-boosting extras like an extension table and trim trap. The lower looper threader and easy threading path remove common beginner frustrations.

What makes it special: This best brother serger includes practical extras that cost extra on other machines. The trim trap keeps your workspace tidy while learning, and the included extension table provides better fabric support during those crucial first projects.

Key features:

• 3 & 4-thread machine with lay-in tension dials

• Lower looper threader for easier setup

• Extension table included for fabric support

• Differential feed with LED lighting

• Free-arm/flat-bed conversion capability

• Trim trap for workspace organisation

From: £349.00

Best Professional Overlocker

Professional sewers need machines that handle production speeds, maintain consistency across long sessions, and offer advanced features that streamline workflow. These three models deliver professional-grade performance with features that serious sewers depend on.

Bernina L850 Overlocker

Best suited for: Professional sewers requiring speed, precision, and air-threading convenience

The Bernina L850 Overlocker represents the pinnacle of professional overlocker design. The one-step Bernina Air Threader handles both loopers instantly, while the free arm and knee-lift system create a production-level workflow that maintains accuracy at speed.

What makes it special: This best professional serger combines air-threading convenience with ultra-quiet operation, making it suitable for long sewing sessions without fatigue or distraction. The micro-thread control and total stitch control provide the precision that professionals require.

Key features:

• One-step Bernina Air Threader for both loopers

• Speed up to 1,500 spm with knee-lift system

• Free arm for tubular garment construction

• Swing-out foot for rapid fabric handling

• Micro-thread control and total stitch control

• 2/3/4-thread versatility with ultra-quiet drive

From: £2,495.00

Bernina L460 Overlocker

Best suited for: Serious sewers prioritising control and reliability for regular use

The Bernina L460 Overlocker delivers rock-solid professional performance at a more accessible price point. The exact speed control and powerful cutting mechanism handle production-level demands while the knee lift maintains professional workflow efficiency.

What makes it special: The combination of precise speed control and smooth cutting makes this machine ideal for sewers who need professional results without the highest-end price tag. The slide-on table and differential feed system handle any fabric challenge.

Key features:

• Exact speed control up to 1,500 spm

• Powerful, smooth fabric cutting system

• Slide-on extension table for workspace expansion

• Knee lift and differential feed capability

• Rolled hem modes with front access threading

• Professional build quality at mid-market pricing

From: £795.00

baby lock Acclaim Overlocker

Best suited for: Professional users valuing consistent results with minimal tension adjustments

The baby lock Acclaim Overlocker excels in professional environments through its Automatic Thread Delivery system and air-threading capability. Built to run for extended periods with minimal fuss, it delivers consistent, professional results across a wide range of projects.

What makes it special: The vertical needle system, combined with ExtraordinAir™ threading, creates a machine built for production work. The automatic tension delivery means less time adjusting settings and more time completing projects professionally.

Key features:

• ExtraordinAir™ air-threading system

• ATD automatic thread delivery for consistency

• Vertical needle system for superior penetration

• Bright, even LED lighting for precision work

• Precise differential feed with adjustable controls

• Professional-grade construction for extended use

From: £1,895.00

Best Value Air Threading Overlocker

Air threading technology eliminates the most time-consuming aspect of overlocker use. These machines use compressed air to thread loopers automatically, transforming setup from a 10-15 minute process into seconds.

baby lock enspire Overlocker

 

Best suited for: Sewers wanting baby lock air-threading quality at the most accessible price

The baby lock enspire Overlocker brings baby lock's renowned air-threading technology within reach of more sewers. Despite its compact footprint, it delivers the premium stitch formation and balanced thread delivery that baby lock is known for.

What makes it special: This best self-threading serger offers genuine air-assisted looper threading at baby lock's entry-level pricing. The ATD-style thread delivery approach helps achieve balanced seams across different fabric types without constant adjustment.

Key features:

• Air-assisted looper threading system

• Compact footprint suitable for smaller spaces

• ATD-style thread delivery for balanced seams

• Differential feed with fine rolled-hem capability

• baby lock build quality at accessible pricing

• Quick setup reduces project switching time

From: £885.00

Bernette B64 Airlock Overlocker

Best suited for: Regular garment makers who value workspace extras with air threading

The Bernette B64 Airlock Overlocker combines air-threading convenience with generous workspace features. The included slide-on extension table and bright LED lighting create an excellent working environment for frequent users.

What makes it special: This machine adds substantial workspace expansion to air-threading technology, making it particularly valuable for sewers working on larger projects. The intuitive controls and clear guides make air threading even more approachable.

Key features:

• Air-threading loopers with slide-on extension table

• Bright LED lighting for clear visibility

• Intuitive controls with clear threading guides

• Broad stitch range with differential feed

• Handles both knits and wovens effectively

• Generous workspace for larger projects

From: £1,095.00

Janome AT2000D Air Threader Professional Overlocker

Best suited for: Value-conscious sewers seeking comprehensive air-threading features

The Janome AT2000D Air Threader Professional Overlocker delivers exceptional value by combining dual-looper air-threading with a built-in needle threader. Currently available at a promotional price, it represents outstanding value in the air-threading category.

What makes it special: The combination of upper and lower looper air-threading plus needle threader creates the most comprehensive threading assistance available. The solid construction (approximately 7.9 kg) provides stability during high-speed operation.

Key features:

• Upper & lower looper air-threading system

• Built-in needle threader for complete assistance

• 2/3/4-thread capability with easy rolled hem

• Colour-coded threading path for clarity

• Speed up to 1,300 spm with stable handling

• Adjustable seam width and differential feed

From: £899.00 (RRP £1,149.00)

Best Budget Combination Machine

Combination machines offer both overlocking and coverstitch functions in one unit, saving space and budget. These models provide genuine dual functionality at accessible prices, though they require conversion between modes.

Bernette Funlock B48 Overlocker and Coverstitch

Best suited for: Space-conscious sewers wanting both functions at minimum cost

The Bernette Funlock B48 Overlocker & Coverstitch represents the most affordable entry point into combination machine functionality. With 23 stitch variations and practical LED lighting, it provides genuine versatility for everyday garment construction and finishing.

What makes it special: This best sewing machine with overlock function offers both overlocking and basic coverstitch capabilities at the lowest price point in its category. The straightforward controls and practical accessory set make it accessible for sewers new to combination machines.

Key features:

• 23 stitch variations for versatile finishing

• LED lighting for clear workspace visibility

• Practical accessory set included

• Straightforward controls for easy operation

• Good stitch width and length range

• Most affordable dual-function option

Bernette B68 Airlock Overlocker and Coverstitch

Best suited for: Budget-conscious users wanting air-threading convenience in a combo unit

The Bernette B68 Airlock Overlocker & Coverstitch steps up from basic combination machines by adding air-threading capability and a roomier throat space. This budget-plus option delivers premium threading ease while maintaining sensible pricing.

What makes it special: The air-threading system removes the most challenging aspect of the combination machine setup. With capacity for up to 8 threads across overlock, coverstitch, and combination modes, it offers impressive versatility for the price.

Key features:

• Air-threading system for easy setup

• Overlock, coverstitch, and combination modes

• Up to 8-thread capability for complex stitches

• Precise differential feed with adjustable widths

• Rolled hem capability across functions

• Vertical needle system with accessory storage

From: £1,195.00

baby bock Aspire Overlock & Coverstitch

Best suited for: Users wanting baby lock quality in an accessible combination package

The baby lock Aspire Overlock & Coverstitch brings baby lock's signature ExtraordinAir™ threading and ATD system to the budget combination category. While priced higher than basic combos, it delivers significantly more sophisticated results.

What makes it special: The combination of ExtraordinAir™ looper threading and Automatic Thread Delivery creates remarkably consistent results across both overlocking and coverstitch functions. The knee lever and larger working space add professional convenience.

Key features:

• ExtraordinAir™ looper threading technology

• ATD (Automatic Thread Delivery) system

• Up to 8-thread stitch variety capability

• Rolled hem function across modes

• Knee lever for hands-free operation

• Larger working space around needle area

From: £1,998.00

Best Professional Combination Machine

Professional combination machines deliver seamless switching between overlock and coverstitch functions with minimal conversion hassle. These models offer the advanced features and build quality that professionals require.

Bernina L890 Overlocker and Coverstitch

Best suited for: Professional sewers requiring flagship performance in one machine

The Bernina L890 Overlocker & Coverstitch represents the pinnacle of combination machine design. The full-colour touchscreen guides setup and stitch control while the one-step air threading system makes function switching genuinely practical for professional workflow.

What makes it special: The touchscreen interface offers both Expert and Guided modes, making complex stitch combinations accessible while maintaining professional speed. The comprehensive accessories set and free arm capability handle any professional challenge.

Key features:

• One-step Bernina Air Threader system

• Full-colour touchscreen with Expert & Guided modes

• 2/3/4/5-thread operation with extensive stitch catalogue

• Free arm, knee lift, and swing-out foot

• Quiet, stable drive system for extended use

• Complete accessories: slide-on table, tools, multiple feet

From: £4,495.00

baby lock Ovation Overlocker and Coverstitch

Best suited for: Professional users needing big throat space and consistent automation

The baby lock Ovation Overlocker & Coverstitch delivers professional-grade performance with generous throat space and baby lock's most advanced automation. The 140mm space right of the needle accommodates larger projects while maintaining precision.

What makes it special: This machine handles overlock, cover, and combination stitches, including baby lock's signature wave stitch. The generous workspace combined with ExtraordinAir™ threading makes it ideal for production environments and complex projects.

Key features:

• Overlock, cover, and combination stitches (up to 8 threads)

• ExtraordinAir™ air threading with ATD system

• Generous 140mm space right of needle

• Knee lift with variable speed control

• LED lighting with professional visibility

• Detailed specifications: 0.75–4.0mm stitch length, 2.0–9.0mm seam widths

From: £2,745.00

baby lock Primo Coverstitch

Best suited for: Professional finishing specialists requiring dedicated coverstitch excellence

The baby lock Primo Coverstitch specialises in coverstitch perfection with baby lock's unique Top Cover Stitch capability and Swing Foot technology. This dedicated machine delivers two-sided decorative finishes that elevate professional garment construction.

What makes it special: The Top Cover Stitch capability and unique swing foot technology create reliable, decorative finishes on both sides of the fabric. This specialisation makes it the ideal professional finishing partner alongside a dedicated overlocker.

Key features:

• Top Cover Stitch capability with swing foot technology

• ATD automatic thread feed system

• Speed control with needle up/down positioning

• Wide throat space for large projects

• Lowerable feed dogs for speciality techniques

• Knee lever with vertical needle system

From: £2,398.00

Frequently Asked Questions About Overlockers

What's the difference between an overlocker and a regular sewing machine?

Regular sewing machines use two threads for straight stitches, while overlockers use 2-5 threads to simultaneously cut, sew, and finish fabric edges with professional seam finishes.

Which overlocker is best for beginners in the UK?

The Janome 9300DX Overlocker at £329 offers the best combination of simplicity, colour-coded threading and value for first-time users.

Is air threading worth the extra cost?

Air threading reduces setup time, making it worthwhile for frequent users who switch between projects regularly. We recommend investing in an overlocker with air threading for sewers who change threads frequently, have poor dexterity such as arthritis, sight and vision issues and occasionally beginners who can afford the extra cost and feel daunted by threading the loopers. Air threading reduces the occurrence of twisted or knotted threads, which can be frustrating. However, if you only intend to use your overlocker occasionally, the time saved with air threading may not justify the higher price. 

Can overlockers handle thick fabrics like denim?

A quality overlocker machine like the Bernina L850 and baby lock Acclaim handles multiple denim layers easily with strong motors and adjustable presser foot pressure. We recommend using the correct needle and quality thread for the best performance. 

What thread should I use in an overlocker?

Use cone threads designed for high-speed sewing rather than regular spools, as they feed smoothly and prevent tension issues. We recommend  Madeira threads - they are designed for smooth running on all types of machines, even at high speeds, minimising looping and ensuring a high-quality finish every time. Their threads offer exceptional quality, durability and vibrant colours. Madeira threads are also known for their high strength and ability to withstand frequent washing. 

Do I need both an overlocker and a coverstitch machine?

Combination machines like the Bernette B48 offer both functions in one unit, though dedicated machines will perform each function better for professional use. 

Find Your Overlocker Match

Every machine in this guide has been personally tested by our team of UK-based sewing machine specialists. We can demonstrate any of these models and help you choose the right overlocker for your projects, workspace, and budget. Expert advice is available by phone, and we offer next-day UK delivery on all machines.

Get in touch with us for personalised recommendations, or visit our Cornwall showroom to see these machines in action. With over 20 years of experience helping UK sewers choose the right equipment, we're here to ensure you find the perfect overlocker machine for your creative journey.