Juki MO-6904R (Juki MO-6900R Series)

High-speed, Variable Top-feed, Overlock / Safety Stitch Machine
1-Needle Overlock

JukiMO-6900S

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The Juki MO-6904R comes with a newly developed feed mechanism that moves the top and bottom feeds separately. With the combination of the feed’s increased differential feed ratio and improved feeding capacity, the machine is able not only to prevent uneven material feed, but also to easily finish difficult processes, such as sewing different types of materials together, ruffling and piping.

Excellent bottom and variable top feed mechanisms.

  • The locus of the top feed dog increases the surfaces of the top feed dog that horizontally synchronize with the bottom feed dog, to reliably feed the materials without damaging them. The feed mechanism smoothly feeds light-weight materials softly or feeds heavy-weight materials with an increased cloth-biting force.
  • The fulcrum of the top feed locus can be set at the best suited position according to the material or process.

The machine has been developed with the intention of providing an extended service life.

  • The bottom and top feeds are equipped with separate differential feed micro-adjusting mechanisms. Various adjusting mechanisms to adjust the feed to ideally match the material being sewn are equipped as standard, such as the bottom feed dog inclination adjusting mechanism and the external differential feed-increasing mechanism.
  • Comfortable operation is all but guaranteed, by a wider area around the needle entry, the adoption as standard of a microlifter feature that offers improved responsiveness to materials and provides the operator with upgraded operability, and by the reduction of operating noise and vibration, which has been achieved by designing an optimally balanced machine.

Further increased reliability.
The introduction of a shield-structured needle bar mechanism and upper and lower needle bar bushings, contributes to increased durability and reliability. Additionally, the machine incorporates an improved upper looper unit as well as coming standard with a cartridge type oil filter and cooling fan, thereby ensuring enhanced reliability.

Model Series Juki MO-6900R Series
Model name Juki MO-6904R Juki MO-6914R Juki MO-6916R
Stitch type 1-needle overlock 2-needle overlock Safety stitching
Stitch style in the U.S.A. 504 514 516
Max. sewing speed 7,000sti/min (longitudinal stroke of top feed dog is 6mm or less)
6,000sti/min (longitudinal stroke of top feed dog is 68.5mm)
Stitch length 0.84mm 1.5~4mm
Needle gauge (mm) –– 2.0 3.2, 4.8, 4.8+2.0, 3.2+2.0
Overedging width (mm) 3.2, 4.0, 4.8, 6.4 3.2, 4.0 3.2, 4.0, 4.8, 6.4
Bottom differential feed ratio For gathering 1:2 (max. 1:4), For stretching 1:0.7 (max. 1:0.6)
Needle bar stroke 24.5mm
Inclination angle of the needle 20
Needle mechanism Needle bar method and upper/lower bushing
Needle DCx27
Vertical stroke of top feed dog 3.58.5mm (it differs with the machine’s specifications.)
Longitudinal stroke of top feed dog 17.5mm (it differs with the machine’s specifications.)
Max. lift of the presser foot 7mm (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

For all Industrial Sewing Machine Spare Parts, Needles & Accessories, click the link below to our Parent company, College Sewing Machine Parts Ltd, the UK’s largest Industrial Sewing Machine Spare Parts Stockist. Juki Industrial Parts Agents, sewing machine parts for the Juki MO-6904R (Juki MO-6900R Series)

Juki MO-6904R (Juki MO-6900R Series) Spare Parts

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