MO-3900 SERIES (June, 2001) 1/6
MO-3916
Model name
Stitch type
Stitch style in the U.S.A.
Max. sewing speed
Stitch length
Needle gauge (mm)
Overedging width (mm)
Differential-feed ratio
Needle bar stroke
Inclination angle of the needle
Needle
Max. lift of the presser foot
Max. presser foot pressure
Stitch length adjusting method
Differential-feed adjusting method
Weight of the machine head
Lubrication
Lubricating oil
Needle cooler
Needle thread heat remover
MO-3904
1-needle overlock
504
MO-3914
2-needle overlock
514
MO-3916
Safety stitching
516
8,000rpm
MO-3903E-0E4-300
MO-3904E-0D4-306
MO-3904E-0
△
4-300
MO-3904E-0
△
6-300
MO-3904E-0
△
6-500
MO-3904E-0H6-50H
MO-3904E-0K6-50H
MO-3904B-0
△
4-300
MO-3904B-0
△
6-300
MO-3904B-0D4-306
MO-3904S-0D4-300
MO-3904E-0
△
4-40K/F
L
〜
M
M
〜
H
L
〜
M
M
〜
H
L
〜
M
1
1
1
1
1
1
1
1
1
1
1
1
2
3
3
3
3
3
3
3
3
3
3
3
–
–
–
–
–
–
–
–
–
–
–
–
4.0
3.2
3.2, 4.0,
4.8, 5.6
3.2, 4.0, 4.8
4.8, 5.6, 6.4
6.4
8.0
3.2, 4.0, 4.8
3.2, 4.0, 4.8
3.2
3.2
3.2, 4.0
2
2
2
3
3
3
3
2
3
2
2
2
4
4
4
4
4
5
5
4
4
4
4
4
1: 0.7
〜
1: 2
1: 0.7
〜
1: 2
1: 0.7
〜
1: 2
1: 0.7
〜
1: 2
1: 0.7
〜
1: 2
1: 0.6
〜
1: 1.6
1: 0.6
〜
1: 1.6
1: 0.7
〜
1: 2
1: 0.7
〜
1: 2
1: 0.7
〜
1: 2
1: 0.7
〜
1: 2
1: 0.7
〜
1: 2
7
7
7
7
7
5
5
7
7
7
7
5.5
DC
×
27 #11
DC
×
27 #11
DC
×
27 #11
DC
×
27 #11
DC
×
27 #14
DC
×
27 #14
DC
×
27 #16
DC
×
27 #11
DC
×
27 #11
DC
×
27 #11
DC
×
27 #11
DC
×
27 #11
8,500
9,000
9,000
9,000
8,000
7,500
7,500
9,000
9,000
9,000
9,000
7,500
■
1-needle overlock
●
For runstitching in general fabric
For serging
Upper looper
extra high throw type
For soft-chains
SPECIFICATIONS
Upper looper
extra high throw type
9,000rpm
0.8
〜
4mm
(for special type machine, stitch length as long as 5mm is available)
1.5
〜
4 (5)mm
―
1.6, 2, 3.2, 4, 4.8, 5.6, 6.4, 8
1.2, 1.6, 2, 2.4, 3.2
2, 3.2, 4, 4.8
1.6, 2, 2.4, 3.2, 4.8, 6.8
3.2, 4, 4.8, 5.6, 6.4
For gathering 1: 2 (max. 1: 4), For stretching 1: 0.7 (max. 1: 0.6)
24.5mm
20
°
DC
×
27, For JE: B-27
7mm
58.8N (6kg)
By push-button
By lever (with micro-adjustment)
28kg
Automatic
JUKI New Defrix Oil No.2 (equivalent to ISO VG32)
Provided as standard: By silicon oil lubricating unit for the needle tip
Provided as standard: By silicon oil lubricating unit for the needle thread
Seams
Model No.
Materials
*
Number
of
needles
Number
of
threads
Needle
gauge
(mm)
Overedging
width (mm)
Number
of
feed dog
rows
Max.
stitch
length
(mm)
Presser
lifting
amount
(mm)
Needle system
Max.
sewing
speed
(rpm)
Bottom
differential-
feed ratio
Remarks
●
For the machine attached with a triangle
(
△
), the number of kinds of overedging
width is two or more.
●
The total overedging wigth:
Needle gauge + Overedging width
A – 1.6mm D – 3.2mm G – 5.6mm
B – 2.0mm E – 4.0mm H – 6.4mm
C – 2.4mm F – 4.8mm
●
The maximum sewing speed of the MO-3900 series is 9,000rpm. The machine can
run continuously at a maximum sewing speed of 8,000rpm when serging.
Naturally, the machine always finishes uniform seams when sewing a light-weight
material at high speed, thereby leading to higher productivity.
●
The MO-3900 series are equipped with a light presser foot mechanism and an
improved feed mechanism so as to prevent the presser foot from jumping and to
reduce the pressure of the presser foot. Thereby the material can not become
damaged by the presser foot and feed dog during a sewing operation. These
mechanisms, together with the block-type feed cam and the throat plate support
which reduces the vibration of the throat plate, enable the machine to feed the
material smoothly and consistently free from material flapping even at high speed.
Super-high-speed Overlock/ Safety Stitch Machine
M
O
-3900 SERIES
SUBCLASS MACHINE LIST
EL = Extra light-weight materials
L = Light-weight materials
M = Medium-weight materials
H = Heavy-weight materials
EH = Extra heavy-weight materials
*
3