HY-4420/BOB Double needle flat bed unison feed sofa leather heavy duty industrial sewing machine

Product Description

Walking foot sewing machine, heavy duty sewing machine
HY-4420/BOB Double needle compound feed sewing machine

Model No.	HY-4420
Feeding system	Alternating presser foot, feed dog and needle feeding
Max sewing speed	1600 s.p.m
Bobbin diameter	Ф28mm
Applied needle	DP×17 #18-#23
Thread size	Maximum thread 9 strands nylon (13#)
Max stitch length	9mm
Max alternating presser foot	6mm
Max presser foot lifting height	13mm by knee controller
Auto oil system	√
Backtacking	By handle bar
Presser foot lifting by air	√
Operation space	250×108mm

Product Description
1.Classical and stable triple feeding construction can make sure feeeding smoothly while sewing heavy duty or complicated material, so that it is not easy to move for upper and bottom material.
2. It adopts horizontal large hook, and can sew maximum thread of 9 strands nylon.
3.Standard 3/8 inch needle gauge set(Apply to HY-4420/BOB).
Application
Presewing and abutted seam sewing process for sofa, office chair, leather products and outdoor goods.
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