Product features
An advanced full-featured machine that is ideally suited to the sewing of extra heavy-weight materials. The machine incorporates a mechanism and parts that are optimum for the sewing of extra heavy-weight materials, such as an extra high-lift type upper looper, tractor foot and coarse type feed dog. It demonstrates an excellent performance ability in the sewing of various kinds of heavy-weight materials such as jeans, raised fabric materials, mats and carpets.
An advanced full-featured machine that is ideally suited to the sewing of extra heavy-weight materials

The machine securely clamps the material at the beginning of sewing as well as smoothly sewing multi-layered parts of the material to facilitate the sewing of extra heavy-weight materials.
The machine incorporates mechanisms that are both durable and reliable, such as the needle bar mechanism, utilyzing the upper and lower bushings, a cartridge type oil filter and cooling fan.
The machine is equipped as standard with a micro-lifter that helps reduce operator fatigue. The micro-lifter is designed to achieve optimum balance, not only reducing noise and vibration but also ensuring comfortable operation.
Needle thread heat remover and needle cooler prevent stitching troubles during times of high-speed sewing, thereby contributing to upgraded seam quality.
The machine comes standard with various adjusting mechanisms, such as a micro-adjusting mechanism, all of which can be easily adjusted to enable the machine to perform sewing under the best-suited conditions for any kind of material.
Specifications
| Model name | MO-6904G | MO-6914G | MO-6916G |
|---|---|---|---|
| Stitch type | 1-needle overlock | 2-needle overlock | Safety stitching |
| Stitch style in the U.S.A. | 504 | 514 | 516 |
| Max. sewing speed | 6,000sti/min* | ||
| Stitch length | 2.5~5mm | 2.5~4mm | 2.5~5mm |
| Needle gauge (mm) | - | 2.6 | 4.8 |
| Overedging width (mm) | 4.8, 10.0, 18.0 | 6.4 | 4.8, 6.4 |
| Differential feed ratio | For gathering 1:1.75 (max. 1:3.8) For stretching 1:0.7 (max. 1:0.6) | For gathering 1:2 (max. 1:3.8) For stretching 1:0.8 (max. 1:0.6) | For gathering 1:1.75 (max. 1:3.8) For stretching 1:0.7 (max. 1:0.6) |
| Needle bar stroke | 28.8mm | ||
| Inclination angle of the needle | 20° | ||
| Needle bar bushing | Upper/lower bushing method | ||
| Needle | DO×5 (excluding some subclass model) | ||
| Max. lift of the presser foot | 8mm (excluding some subclass model) | ||
| Max. presser foot pressure | 63.7N (6.5kgf) | ||
| Stitch adjusting method | By push-button | ||
| Differential-feed adjusting method | By lever (with micro-adjustment) | ||
| Weight of the machine head | 28kg | ||
| Lubrication | Automatic | ||
| Lubricating oil | JUKI Machine Oil 18 (equivalent to ISO VG18) | ||
| Needle cooler | Provided as standard (excluding some subclass model) | ||
| Needle thread heat remover | Provided as standard | ||
| Micro-lifter | Provided as standard |
* "sti/min" stands for "Stitches per Minute"
When you place orders

Subclass machine list

Catalogue
The MO-6900G Series documents Juki publishes, on their own site. They open in a new tab.
And the catalogues Juki publishes for their whole range.
Apparel General Catalog (PDF)Non-apparel General Catalog (PDF)Essential Parts List
The file is published and updated by the manufacturer; it is not copied here, so nobody downloads an outdated version.
Product information, photographs and specifications: Juki. No prices or stock here: ask us and we will get back to you.
Other overlock / safety stitch machine models
Tell us the operation you need to solve and we will reply with the right configuration and the lead time.
