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Juki MO-644D


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With the 600 line 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, and more at an affordable price.
Product Features

Color-Coded Threading Guides
Threading the MO-644D is a breeze. The thread paths are color-coded and clearly marked. 



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 multipurpose 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. 


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. 

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. 

  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. 

Bright Lights - Better View
Lighting on the MO-644D provides optimum lighting to the fabric and needle areas.







Flip and Roll 
Automatic rolled hemming can be created quickly and easily with a flip of a switch. No need to change the needle plate or foot - Just Flip and Roll!


Differential Feed Adjustment 
Keep things moving along evenly, or create fashion techniques, like lettuce edges, with the easy to use Differential Feed dial.






Easy Stitch Length Adjustments 
Change the stitch length for specialty thread or overlock techniques using the conveniently located dial.


Convenience Features:


Snap-On Presser Feet
Color Coded Thread Paths
Built-in rolled hemming
2/3/4 Thread options
Industrial Tension System
Industrial Cutting System
Sewing Guage built-in for accurate seams
Fast 2-Thread Conversion optional
Differential Feed




4-Thread Overlock
3-Thread Flatlock
3-Thread Narrow Overlock
3-Thread Overlock
3-Thread Rolled Hem
2-Thread Rolled Hem optional
2-Thread Overcast optional


Included Accessories:

Presser foot
Spool caps
Thread nets
Vinyl cover 
Needle pack 
Brush & needle inserter 
Looper Threader 
Accessory pouch
Light bulb 
Instruction manual 
Foot control & power cord 

2/3 thread selector optional





Sewing Speed   Max. 1500rpm
Stitch Length   Max.4mm
Standard 2.5mm
Overlocking Width   Left Needle: 6mm / Right Needle: 4mm 
Rolled Hem: 2mm
Differential Feed:   0.7 : 2.0 Ratio 
Presser Foot Lift   5mm
Dimensions (mm)   270mm x 345mm x 295mm
Weight (machine)   7.0 kg (15.0 lbs.) 
Needles:    Household #11~#14


Expand your machine’s creative potential with Juki accessories.
Serging jobs can be completed more quickly and with professional-looking results.

Finish, gather, and more. Juki has the correct foot for each creative technique. 

Standard Presser Foot
For regular sewing and attaching tapes.
  Blind Stitch Presser Foot
(for Right Needle)

For making blind hems.
  Universal Blind Stitch Presser Foot(for Right & Left Needle)
For making right/left needle blind hems and flatlock.
Elasticator Presser Foot
To attach elastic tape to stretch fabrics.
  Cording Presser Foot
For attaching nylon string or wire on edge of fabrics.
  Beading Presser Foot 
For attaching pearls and beading with overlock stitching,
Curved Beading Presser Foot
For attaching pearls and beading on a curve.
  Piping Presser Foo t
For sewing piping. 
  Gathering Presser Foot
For gathering and sewing with differential feed.