Increased rigidity and JUKI's unique high-performance feed control system contribute to increased feed accuracy, thereby reducing uneven material feed during outward/inward sewing. Uneven material feed during outward/inward sewing is reduced. In addition, for the feed system of the feeding frame, either the intermittent feed or the continuous feed can be selected.

The thread clamp mechanism and the feed mechanism that succeeded JUKI's unique technologies have been reviewed for improvement. As a result, more beautifully-finished seams are now produced. In addition, the main-shaft retry function can be selected with the memory switch. This improves the penetration force of the needle when sewing heavy-weight materials.

Since thread trimming is performed at the beginning of sewing, so-called bird's nest (thread tangling in at the beginning of sewing) is reduced, thereby producing more beautiful seams.

Since the counter knife position has been changed, length of needle thread and bobbin thread remaining on the material after thread trimming is reduced to 5 mm or less. As a result, securing of thread at the end of sewing is no longer required. * The bird's nest reduction function and shorter-thread remaining function cannot be used simultaneously.

Highly-evaluated active tension that is used for setting the needle thread tension is now added with new functions. The output can be changed over with the memory switch between the low-tension side output and the high-tension side output to enable fine adjustment of the thread tension in the actual area of use. Not only the thread tension during sewing can be changed at a pin point but also it can be set in accordance with the material thickness. In addition, the needle thread tension that is likely to vary with the sewing direction can also be corrected. All of these adjustments can be done on a stitch-by-stitch basis through the operation panel with ease. Since the needle thread tensions adjusted in accordance with various sewing conditions are reproducible, setup changing time is reduced at the time of changeover of processes.

AMS-221F-SS2516·HS2516 AMS-221F-SL2516·HL2516 This model of sewing machine is best-suited to sewing topstitching / shape-tacking of apparel products in general such as labels and emblems, and bags and shoes. It is widely applicable to sewing of various kinds of sewing materials and processes.