Variable Top-feed, Overlock / Safety Stitch Machine for Extra Heavy-weight Materials
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.

Product features
An advanced full-featured machine that is ideally suited to the sewing of extra heavy-weight materials
The MO-6900J Series comes with a newly-developed feed mechanism that moves the top and bottom feeds separately.
With its improved feeding capacity and stronger cloth-biting force, the feed mechanism prevents uneven material feed when sewing 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.
Specification
Model name | MO-6904J | MO-6914J | MO-6916J | |
---|---|---|---|---|
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 | 6.4 | 4.8, 6.4 | |
Bottom 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) | |||
Vertical stroke of top feed dog | 8.5mm | |||
Longitudinal stroke of top feed dog | 2.7~7mm (it differs with the machine's specifications.) | |||
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 | |||
Bottom differential feed adjusting method | By lever (with micro-adjustment) | |||
Top differential feed adjusting method | By lever (with micro-adjustment) | |||
Weight of the machine head | 29kg | |||
Lubrication | Automatic | |||
Lubricating oil | JUKI Machine Oil 18 (equivalent to ISO VG18) | |||
Needle cooler | Provided as standard | |||
Needle thread heat remover | Provided as standard | |||
Micro-lifter | Provided as standard |
* "sti/min" stands for "Stitches per Minute"