AJ Sewing Machine FC-4420 – Double Needle Feed Lockstitch Industrial Sewing Machine
AJ Sewing Machine FC-4420 is a robust industrial double-needle lockstitch sewing machine engineered for heavy-duty materials. Featuring a unison feed system with synchronized walking foot, needle feed and feed dog, plus a large vertical hook for high-efficiency stitching. Perfect for bags, seats, cushions, leather products, automotive interiors, tents and other heavy textiles. Reliable performance, smooth operation, automatic lubrication and superior stitch quality make it essential for manufacturing and textile industries.
Description
Brand: AJ Sewing Machine
Model: FC-4420
Type: Industrial Double Needle Lockstitch Sewing Machine
Feed System: Unison feed (needle feed + walking foot + feed dog working together)
Stitch Formation: Lockstitch
Machine Configuration: Flat-bed
Max Sewing Speed: Up to 6000 stitches/min (typical industrial speed)*
Max Sewing Thickness: Heavy-duty materials
Stitch Length: Adjustable lockstitch
Feed Mechanism: Needle feed with synchronized walking foot and feed dog
Hook Type: Large vertical-axis hook for efficient thread loop catching and consistent stitch formation
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