Frequently Paired With:
Best for Creating
Select an icon to view image gallery.
Product Information
Specifications
What's included
Pair it with
Video Tutorials Hide Videos Show Videos
-
JUKI SERGER COMPARISON (MO-6SERIES)
View VideoIn this video we compare the Juki Mo- 6 series sergers. SHOP ...
-
Best Juki Serger for You? Don’t Buy Until You Watch This!
View Video?️Juki SERGER MACHINES ?️ https://jukijunkies.com/?s=Serger+ma...
-
JUKI MO-644D: Overview
View VideoExpand your range of design and technique with the easy to ope...
-
How To Thread The JUKI MO-654/MO-644 Serger! (In depth)
View Video?Premo-Soft Threads: https://jukijunkies.com/?s=Premo-Soft+&po...
-
MO-644D Chapter9 Roll hemming
View VideoJUKI Overlock Sewing Machine MO-644D Operation Support Movie C...
Blog Posts
Coming Soon!
Juki Junkies is always working on new educational content for you. Be sure you are signed up for our newsletter to always stay up to date with new products, blogs, YouTube videos and more.
Sign up here!Manuals & Brochures
- 2 needle 2/3/4 thread serger
- Additional differential feed adjustment to help perfect your seams
- Built in rolled hem function
- Juki's legacy model known for simplicity and reliability
- Scroll down for a full list of features, specifications, and accessories
-

We Want To Feature You!
Email us at customerservice@jukijunkies.com with a brief description and image of your work to be featured here!
-

We Want To Feature You!
Email us at customerservice@jukijunkies.com with a brief description and image of your work to be featured here!
-

We Want To Feature You!
Email us at customerservice@jukijunkies.com with a brief description and image of your work to be featured here!
-

We Want To Feature You!
Email us at customerservice@jukijunkies.com with a brief description and image of your work to be featured here!
Standard Features:
- Color-Coded Threading Guides: Threading the MO-644D is a breeze with color-coded and clearly marked thread paths.
- Easy Tension Adjustment: 1-rotation thread tension dials with normal tensions highlighted for simple, consistent tension adjustment. Specially designed guides keep thread in place and ensure proper sewing tension at any speed.
- Multi-Function Presser Foot: The multi purpose presser foot, standard on the MO-644D, allows you to create overlock stitches and add tape, elastic, ribbon, or sequins to your creations. Snap-on presser feet mean that you can easily change from the multi-purpose foot to one of the Juki Specialty feet and expand the creative potential of the MO-644D.
- Heavy Duty Knife System: The knife system on the MO-644D operates with a dedicated drive to assure consistent and easy cutting for both light and heavy weight fabrics.
- Serging Precision: The built-in seam guide takes the guesswork out of seam allowances. Just use the conveniently located gauge on the guard cover and serge away, creating accurate seam allowances as you go.
- Bright Lights Means Better View: Lighting on the MO-644D provides optimum lighting to the fabric and needle areas.
- Easy Cutting Width Adjustment: The lower knife cutting width easily and quickly adjusts with the turn of the dial allowing you to create perfect seams and rolled edges.
- Differential Feed Adjustment: Keep things moving along evenly, or create fashion techniques, like lettuce edges, with the easy to use differential feed dial located on the exterior right hand side.
- Easy Stitch Length Adjustments: Change the stitch length for specialty thread or overlock techniques using the conveniently located dial.
- Flip and Roll: Automatic rolled hemming can be created quickly and easilywith a flip of a switch. No need to change the needle plate or foot - Just flip and roll!
With the MO-600 series of home sergers, a beginner or experienced sewer can create simple sportswear or elegant evening wear with unbelievable ease. Expand your range of design and technique with the easy-to-operate, durable and dependable MO-644D. The MO-644D, 2-needle, 2/3/4 thread overlock machine featuring built-in rolled hemming and differential feed at an affordable price.
Offering versatile features and accessories, JUKI has created a machine perfect for your project needs. With the ability to automatically roll hems and its included multi-purpose foot, enjoy sewing on the MO-644D. Containing high-speed sewing, this machine is perfect for handling your project dreams and helping you deliver them faster than before.
1500Stitches per Min.
Maxiumum Sewing Speed2/3/4
Thread CapacityRight Needle 4mm
Stitch WidthLeft Needle 6mm
Stitch Width1-4mm
Stitch LengthBuilt-In Rolled Hem
2mm
Rolled Hem Width1.0-1.5mm
Rolled Hem Length5mm
Presser Foot Lift0.7-2.0mm
Differential Feed15 lbs
WeightDimensions
12.5”(W) x 7.7”(D) x 13.5”(H)
Accessory Bag
Learn More
Accessory Bag
- A clear bag is provided holding all your included accessories.
- Like a ziploc bag, simply snap it closed as you store your extras.

Standard Foot
Learn More
Standard Presser Foot
- This is a universal presser foot that can do all the stitches on this machine.
- It can also be used for swing in tape while overlocking the edge of the fabric.
- Purchase it Here!

Spool Caps
Learn More
Spool Caps
- Your machine will come with 4 spool caps.
- Used these on top of wobbly spools of threads while sewing.
- Purchase Extras Here!

Spool Nets
Learn More
Spool Nets
- Your machine will come with 4 spool nets.
- You can put these on a spool of thread to help regulate how fast the thread unravels to avoid any tension issues or tangles in the thread.
- Purchase Extras Here!

Anti Vibration Cones
Learn More
Anti Vibration Cones
- Your machine will come with 4 anti vibration cones.
- Designed to sit under larger spools of thread to secure them from wobbling while sewing.
- Purchase Extras Here!

Pack of Needles
Learn More
Pack of Needles
- Your Juki serger will come with a pack of needles with assorted sizes.
- You can use home sewing needle with a flat side. We highly recommend Schmetz Needles.
- Be sure to check out the specifications section on the machines to see your thread & needle range.
- Shop Needles Here!

Looper Threader
Learn More
Looper Threader
- A looper threader is provided to help the threading process of your upper and lower loopers.

Oil Bottle
Learn More
Oil Bottle
- Your machine will come with a small bottle of clear oil.
- Be sure to read your user manual on where to oil your machine and how often.
- Purchase More Here!

Tweezers
Learn More
Tweezers
- You will get a set of tweezers to help you handle thread in hard to reach areas.
- You will find these located in your front door of the machine.
- Check our Timmi Tweezers!

Cleaning Brush
Learn More
Cleaning Brush
- A small brush is also provided to help remove lint under your needle plate. We reccommend using our cleaning swabs to help pick up thread vs just sweeping it to another area in the machine. Both found in the front door of your machine.
- Did you know the end of your cleaning brush has a cut out to help insert and remove needles?

User Manual
Learn More
User Manual
- A paper copy of the user manual is provided and contains several language options.
- Take time to read your manual, as every machine has a learning curve. No matter how long you have been sewing. Technology is always changing!

Foot Pedal & Power Cord
Learn More
Foot Pedal & Power Cord
- This foot pedal is also your power cord. Simply plug into the machine and into the wall to be able to power and operate the machine.
- Purchase it Here!

Soft Machine Cover
Learn More
Soft Machine Cover
- Your machine will come with a soft dust cover to place on your machine when you are not using it.

Screwdriver
Learn More
Screwdriver
- A small flat head screwdriver is provided to help change needles.

Thread Guide Support & Rod
Learn More
Thread Guide Support & Rod
- A thread rod and guide will attach to the thread base. The rod is retractable as needed.
- Be sure to follow your manual on proper threading on this machine.
Sewing Machine Needles
Needle & thread are the most important step to sucessful sewing. There is more than just one needle style and size. Discover the different style needle tips that caan truly elivate your stitches.
Shop All
Thread made in the USA
We offer several different lines of threads that are made in the USA. Polyester, Cotton and even Bonded Nylon. Explore the different threads we offer to find the best fit for your projects.
Shop All
Extra Juki Accessories
Juki offers many additional accessories for the Serger Machines. Find more specific accessories for applications like attaching elastic, doing gathering, piping, and much more.
Shop All




