HL-4400DB Direct Driver Single Needle Walking Foot Compound Feed with Auto Backstitch & Foot Lifter
HL-4420DB Direct Driver Double Needle Walking Foot Compound Feed with Auto Backstitch & Foot Lifter

Description:

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