MF-7822/UT25, MF-7823/UT25 (August, 2004) 1/2
● The quality-first cylinder-bed coverstitch machine now comes
with a pneumatic thread trimmer. It offers dramatically
improved thread trimming performance and reliability to
achieve consistent thread trimming, thereby contributing to
increased productivity.
SPECIFICATIONS
High-speed, Cylinder-bed, Top and Bottom Coverstitch Machine
with Pneumatic Top and Bottom Thread Trimming Device
MF-7822/UT25
(2-needle, top and bottom coverstitch machine)
MF-7823/UT25
(3-needle, top and bottom coverstitch machine)
Model name
Stitch type
Needle
Stitch pitch adjustment
Differential feed adjustment
Lubrication
Lubricating oil
Top and bottom thread trimmer
Auto-lifter
Micro-lifter
Needle bar stroke converting function
＊
Silicon oil tank for needle tip and
needle thread
Cartridge oil filter
Weight of the machine head
MF-7822/UT25 MF-7823/UT25
2-needle top and bottom 3-needle top and bottom
coverstitch coverstitch
UY128GAS #9S〜#14S (standard #10S)
By dial
By micro-adjustment mechanism
Automatic
JUKI Machine Oil 18 (equivalent to ISO VG18)
Provided as standard (pneumatic type)
Provided as standard (pneumatic type)
Provided as standard
Provided as standard
Provided as standard
Provided as standard
44kg
MF-7823U10B56/UT25
Pneumatic top and bottom
thread trimming mechanism
Pneumatic top and bottom
thread trimming mechanism
Part No.134-42058
＊The needle bar stroke has been factory-set to 31mm as standard. 33mm for thicker material also be available by simple adjustment. (max. sewing speed: 5,500rpm)
By using an air-blow nozzle
included in the accessary box
needle threads are blown at
the end of bottom coverstitch.
Seams Model No. Number of
needles
Number of
threads
Needle gauge
(mm)
Stitch
length (mm)
Differential-
feed ratio
Presser lifting
amount (mm)
Max. sewing
speed (rpm)
Device
Subclass machines
＊1 ＊3＊2
SUBCLASS MACHINE LIST
MF-7822-U10-B48 2 4 4.8 0.9〜3.6
1:0.9〜1:1.8
(1:0.6〜1:1.1)
5(8) 6,500 UT25
MF-7823-U10-B56 3 5 5.6 0.9〜3.6
1:0.9〜1:1.8
(1:0.6〜1:1.1)
5(8) 6,500 UT25
MF-7823-U10-B64 3 5 6.4 0.9〜3.6
1:0.9〜1:1.8
(1:0.6〜1:1.1)
5(8) 6,500 UT25
MF-7823-K10-B56 3 5 5.6 0.9〜3.6
1:0.9〜1:1.8
(1:0.6〜1:1.1)
5(8) 6,500 UT25
U10
Basic stitch (universal type)
K10
Covering
＊1 Stitch length can be adjusted to 4.5mm at the maximum. ＊2 Differential ratio can be switched by adjustment. ＊3 5mm with top coverstitch, 8mm without top coverstitch.
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