Maqi LS-4420 Double-Needle Unison Feed Heavy-Duty Lockstitch Sewing Machine

Maqi LS-4420 Double-Needle Unison Feed Heavy-Duty Lockstitch Sewing Machine

• Twin-needle unison feed (compound triple feed) system: bottom feed, needle feed, and alternating walking foot
• Delivers parallel double-row topstitching with consistent stitch length and tension
• Twin large horizontal-axis rotary hooks accommodate heavy-duty bonded nylon/polyester threads with increased bobbin yardage
• High presser foot lift and climbing stroke smoothly transition over thick cross-seams and multiple plies
• Built-in safety clutch automatically disengages hook drive during thread snarls to safeguard internal gearing and hook timing
• Easy-dial stitch length regulator and large reverse lever for seam locking and backtacking
• Generous underarm throat clearance provides maneuverability for bulky, wide fabric rolls and foam-laminated assemblies
• Automatic oil pump lubrication system ensures steady internal oiling during continuous high-speed runs

• Brand: Maqi
• Class: LS Series
• Model: LS-4420 (Double Needle Unison Feed)
• Stitch Type: 301 Lockstitch
• Number of Needles: 2
• Standard Needle Gauge: 6.4 mm (1/4″) (Optional gauges: 3.2 mm, 4.8 mm, 7.9 mm, 9.5 mm, 12.7 mm)
• Feed System: Unison Feed (Bottom Feed + Needle Feed + Alternating Walking Foot)
• Maximum Stitch Length: Up to 9 mm
• Maximum Sewing Speed: 2,000 – 2,200 stitches/min
• Presser Foot Lift: 9 mm (by hand) / up to 16 mm (by knee lifter)
• Alternating Foot Stroke: 2.5 mm – 6.5 mm
• Needle System: 135×17 (DP×17)
• Needle Size Range: Nm 125–180 (#20–#24)
• Hook: 2 × Large Horizontal-Axis Double-Capacity Hooks
• Lubrication: Automatic Centralized Pump Lubrication