HL-4400-D4/4420-D4 Computerized Single/Double Needle Walking Foot Compound Feed Auto Trimmer/ Auto Foot Lifter/Auto Backstitch/Auto Needle Positioning

HL-4400D/4420 Direct Driver Single/Double Needle Walking Foot Compound Feed

HL-4400DB/4420DB Direct Drive Single/Double Needle Walking Foot Compound Feed Built-in Panel

1. New direct driver type for heavy duty compound feed lockstitch with large vertical rotating hook
2. Using the needle bearings for arm shaft & hook shaft, cog belt driving, plunger pump lubrication
3. Walking foot compound feed by needle bar, presser foot & feed dog, smooth running, quiet work & long service life
4. It is also equipped with a safety clutch to prevent the hooks from damage by over-duty operation
5. Widely used for car seats, safety belts, safety air bags, tents, parachutes, etc