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Jack Brand Industrial Sewing Machine JK-A4S-W

Jack Brand Industrial Sewing Machine JK-A4S-W


Semi-Dry Computerized Lock Stitch Machine



Sealing Oil Pan, Oil free

 Oil is stored in the sealed pan which is integrated into the machine head, effectively prevents oil leakage and oil staining, realizes clean sewing for your valuable products.

Scientific Design, for Kinds of Fabrics

Optimized thread take-up and feeding mechanism enlarge the sewing range, suitable for various kinds of fabrics like jeans, yarn and lace.

Oil Feeding Reminder

New function for oil level reminding, makes easy and fast to adding oil.

Semi Dry Head, Clean Sewing

DLC needle bar and bearing for thread take-up, not only durable but also makes the machine head free from oil staining by using special grease.(only for model A4S-W)


Model A4S-W
Needle DB×1 11-18#
Thread Number 2
Stitch Length(mm) 5
Height of Presser Foot(mm)  5-13
Sewing Speed(S.p.m) 5000
Automatic Presser Lifting Standard
Electronic Tension Post Standard
Thin Material
Medium-heavy Material
Volume(mm) 645×248×550
Weight(kg) 40/46


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