High-speed, Cylinder-bed, Top and Bottom Coverstitch Machine -------------------------------------------------------------------------------- MF-7822 (2-needle, top and bottom coverstitch machine) MF-7823 (3-needle, top and bottom coverstitch machine) MODEL NAME MF-7822 MF-7823 Stitch type 2-needle top and bottom coverstitch 3-needle top and bottom coverstitch Max. sewing speed 6.500rpm Stitch length 0.93.6mm (stitch length can be adjusted to 4.5mm) Differential-feed ratio(switchable) 1:0.91:1.8 (1:0.61:1.1) Needle gauge 4.8mm 5.6, 6.4mm Needle UY128GAS #9S#14S (standard #10S) Lift of the presser foot 5mm (with top and bottom coverstitch),8mm(with bottom coverstitch) Stitch pitch adjustment By dial Differential feed adjustment By micro-adjustment mechanism Lubrication Automatic Lubricating oil JUKI Machine Oil 18 (equivalent to ISO VG18) Micro-lifter Provided as standard Needle bar stroke converting function Provided as standard Silicon oil tank for needle tip and needle thread Provided as standard Cartridge oil filter Provided as standard Weight of the machine head 42kg