Mf-7900/Ut59; Specifications; At The Beginning - JUKI MF-7900 Series Engineer's Manual

12. MF-7900/UT59

(1) Specifications

Model name
Model
Stitch type
Example of application
Sewing speed
Needle gauge 3-needle 5.6 mm, 6.4 mm
2-needle 4.0 mm, 4.8 mm
Differential feed ratio
Stitch length
Needle
Needle bar stroke
Dimensions
Weight
Lift of presser foot
Feed adjustment meth-
od
Looper mechanism
Lubricating system
Lubricating oil
Oil reservoir capacity
Installation
Noise

(2) At the beginning

❶
High-speed, cylinder-bed coverstitch machine
MF-7900 series
ISO standard 406, 407, 602, and 605
For preventing thread from raveling at the end of hemming or other processes
Max. 6,000 sti/min (at the time of intermittent operation) Direct-drive type
Speed of stitch at the delivery: 4,500 sti/min (at the time of intermittent operation)
1 : 0.9 to 1 : 1.4 (stitch length : less than 2.5 mm) * Only for H23
(1 : 0.6 to 1 :1 .1, when the differential link hinge screw is changed)
Micro-differential feed adjustment mechanism is provided. (Micro-adjustment)
0.9 mm to 3.6 mm (can be adjusted up to 4.5 mm)
UY128GAS #9S to #12S (standard #10S)
31mm (33 mm when the eccentric pin is changed over)
(Height) 450 x (Width) 456 x (Length) 299
45 kg (With pneumatic type thread trimmer)
8 mm (needle gauge : 5.6 mm without top covering), and 5 mm (with top covering)
Micro-lifter mechanism is provided.
Main feed : dial type stitch pitch adjustment method
Differential feed : lever adjustment method (micro-adjustment mechanism is pro-
vided.)
Spherical rod drive method
Forced lubrication method by gear pump
JUKI CORPORATION GENUINE OIL 18
Oil gauge lower line : 600 cc to upper line : 900 cc
Table-mount type, Semi-submerged type
- Equivalent continuous emission sound pressure level (L
A-weighted value of 79.5 dB; (Includes K
C.6.2 -ISO 11204 GR2 at 4,500 sti/min.
= 2.5 dB); according to ISO 10821-
pA
Remove fixed band ❶ for transportation before set-
ting up the sewing machine.
– 152 –
) at the workstation:
pA