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The JUKI MF-7923-U11 is a professional 3-needle, 5-thread cylinder-bed coverstitch machine designed for hemming, finishing, and decorative stitching on knit and stretch garments. Ideal for alteration shops, menswear, fashion designers, and apparel production, it produces the clean, flexible factory-style finish found on T-shirts, polos, sportswear, and knitwear. The cylinder-bed design makes it especially convenient for hemming sleeves, shirt bottoms, and other tubular garments, while JUKI's differential feed provides excellent control of stretch and delicate fabrics.

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JUKI MF-7923-U11 3-Needle Cylinder-Bed Coverstitch Machine

Professional Coverstitch Finishing for Alterations, Menswear, Fashion & Apparel Production

The JUKI MF-7923-U11 is a professional high-speed, cylinder-bed coverstitch machine designed for the finishing operations that give knit garments their clean, flexible, factory-made appearance.

If you are hemming T-shirts, shortening knit sleeves, producing polos, working with stretch garments, or creating professional fashion and menswear, a coverstitch machine performs operations that a standard straight-stitch or overlock machine simply cannot duplicate.

The MF-7923-U11 combines JUKI's industrial build quality with a 3-needle, 5-thread top-and-bottom covering stitch, differential feed, adjustable stitch length, and a cylinder-bed design that makes it particularly well suited for working around sleeves, cuffs, shirt bottoms, and other tubular garment sections.

What Is This Machine Used For?

The MF-7923-U11 is JUKI's universal coverstitch configuration, making it an excellent choice for shops that need one machine to handle a variety of professional garment-finishing operations.

Common applications include:

• Hemming T-shirts and knit shirts

• Shortening and hemming sleeves

• Polo shirt construction and finishing

• Knitwear alterations

• Stretch garment construction

• Sportswear and activewear

• Decorative coverstitching

• Top-and-bottom covering operations

• Fashion and apparel production

• Professional garment alterations

Rather than trying to imitate a factory hem with a lockstitch machine, the MF-7923 allows you to produce the flexible, professional coverstitched seam commonly found on commercially manufactured knit garments.

An Excellent Machine for Professional Alterations

For an alterations business, the MF-7923-U11 fills an important gap between a standard lockstitch machine and an overlock machine.

When shortening a T-shirt, polo, knit top, or other stretch garment, customers expect the finished garment to retain the appearance and flexibility of the original factory hem.

The MF-7923-U11 lets an alterations shop recreate that professional coverstitched finish rather than replacing it with a conventional straight-stitch hem.

The cylinder bed is especially valuable for alterations because sleeves and other tubular garment sections can be positioned around the sewing area instead of forcing the operator to manipulate a small circular opening across a large flat machine bed.

For a professional alterations shop already equipped with a straight-stitch machine and serger, a coverstitch machine is an important next step toward handling a broader range of garments correctly.

Ideal for Menswear & Tailoring Shops

Modern menswear includes far more than traditional woven suits and dress shirts.

Polo shirts, knit shirts, performance garments, stretch fabrics, casualwear, athletic-inspired clothing, and contemporary knit garments have become everyday components of men's wardrobes.

The MF-7923-U11 gives tailoring and menswear shops the ability to perform professional finishing work on these garments while maintaining the appearance of the original construction.

It is particularly useful for:

• Polo shirt alterations

• Knit shirt hemming

• Sleeve shortening

• Stretch menswear

• Performance apparel

• Casual and athletic garments

• Custom knit garment construction

Adding a dedicated coverstitch machine allows a tailoring operation to accept work that would otherwise be difficult to reproduce properly with traditional tailoring equipment.

Built for Fashion Designers & Apparel Makers

For designers and small apparel manufacturers, the MF-7923-U11 brings a true production-style garment finish into the workroom.

Coverstitching isn't simply functional—it is also an important visual element of modern garment construction.

Use the MF-7923-U11 for hems, covering operations, stretch garments, knit collections, sportswear, elevated basics, T-shirts, polos, and other designs where the finished seam needs to look like professionally manufactured apparel.

The machine's differential feed and adjustable feeding characteristics are particularly important when working with knit and elastic materials, helping control the stretching, puckering, and distortion that can occur when sewing these fabrics.

Why a Cylinder Bed Matters

The cylinder-bed design is one of the MF-7923-U11's biggest advantages for garment work.

Instead of working exclusively on a broad flat surface, the narrow sewing bed provides easier access when sewing circular and tubular components.

This makes the machine especially useful for:

Sleeves • Shirt Bottoms • Cuffs • Small Openings • Tubular Knit Components

For alteration work in particular, this can make it substantially easier to position and control an already-constructed garment.

Better Control of Knit & Stretch Materials

Knit fabrics can stretch, shift, wave, or become distorted as they're sewn. The MF-7900 Series incorporates a differential-feed micro-adjustment mechanism, allowing the feed to be fine-tuned for the material being sewn.

JUKI also incorporates a micro-lifter mechanism that allows elastic or delicate material to be sewn with the presser foot slightly raised, helping reduce material slippage, warping, and damage.

The result is greater control when transitioning between different knit and stretch materials and a cleaner, more consistent finished seam.

3-Needle / 5-Thread Professional Coverstitch

The MF-7923-U11 is the 3-needle version of JUKI's universal MF-7900 Series coverstitch machine.

The three-needle configuration provides the versatility required for professional top-and-bottom covering operations while producing the recognizable appearance associated with commercial garment production.

Available needle gauges include:

• 5.6 mm

• 6.4 mm

This makes the machine suitable for both functional garment construction and visible decorative finishing.

** As these sizes are so close in measure, we will supply whichever one is readily available to fulfill your order, please reach out and advise us if you have a specific requirement on the needle spacing. 

Binder Ready

The U11 configuration includes a binder mounting base, allowing various binders to be installed for specialized operations.

This gives growing alterations businesses, designers, and production shops the ability to expand the machine's capabilities as their work changes rather than limiting the machine to a single operation.

Key Features

• JUKI industrial cylinder-bed coverstitch machine

• 3-needle / 5-thread configuration

• Top-and-bottom covering stitch

• Designed for professional knit garment finishing

• Excellent for T-shirts, polos, knitwear and sportswear

• Ideal for alterations and sleeve hemming

• Cylinder bed provides easier access to tubular garments

• Differential-feed micro-adjustment

• Adjustable stitch length

• Micro-lifter mechanism

• Adjustable feed-dog movement

• Binder mounting capability

• Looper-thread twining prevention mechanism

• Silicon oil system for the needle tip and needle thread

• Built for professional and production environments

Technical Specifications

Model: JUKI MF-7923-U11
Machine Type: High-Speed Cylinder-Bed Top & Bottom Coverstitch
Configuration: Universal / Basic Type
Needles: 3
Threads: 5
Stitch Type: Top & Bottom Covering Stitch
Needle Gauge: 5.6 mm or 6.4 mm depending on configuration
Stitch Length: 0.9–3.6 mm standard adjustment
Differential Feed Ratio: 1:0.9–1:1.8, adjustable
Presser Foot Lift: 5 mm with top-and-bottom covering stitch
Maximum Sewing Speed: Up to 6,500 stitches per minute depending on configuration
Needle System: UY128GAS
Lubrication: Automatic
Lubricating Oil: JUKI Machine Oil 18 or equivalent ISO VG18

Who Should Buy the JUKI MF-7923-U11?

We recommend this machine for:

Professional Alterations Shops
Add the ability to properly shorten and finish T-shirts, polos, sleeves, knit garments, and stretch apparel.

Tailors & Menswear Specialists
Expand beyond traditional woven garments and professionally service today's knit, stretch, casual, and performance menswear.

Fashion Designers
Create garments with the authentic coverstitched details and flexible seams found in professionally manufactured apparel.

Apparel Manufacturers
Add a high-speed industrial machine for repetitive hemming and covering operations on knit garments.

Custom Clothing & Small-Batch Brands
Bring an important production operation in-house and achieve a more consistent, professional finish.

Is a Coverstitch Machine the Same as a Serger?

No. These machines perform different jobs.

An overlock or serger is primarily used to join and finish raw fabric edges. A coverstitch machine is used extensively for hemming and covering operations, particularly on knit and stretch garments.

Look at the bottom hem of a professionally manufactured T-shirt: the parallel rows of stitching visible from the outside and the covered stitch underneath are the type of professional finish a machine like the MF-7923-U11 is designed to produce.

For a complete professional knit-apparel workstation, a shop will often use a straight-stitch machine, overlock machine, and coverstitch machine, with each performing a different part of garment construction.

Professional Equipment for Professional Garment Finishing

The JUKI MF-7923-U11 isn't simply another sewing machine—it adds a specific finishing capability that can significantly expand what an alterations shop, tailor, designer, or apparel business can produce.

Whether you're recreating an original hem during an alteration, producing a collection of knit garments, finishing polo shirts, or adding professional coverstitch details to your own designs, the MF-7923-U11 provides the industrial performance and specialized stitch required to make the finished garment look right.