High-speed, Cylinder-bed, Top and Bottom Coverstitch Machine MF-7822 (2-needle, top and bottom coverstitch machine) MF-7823 (3-needle, top and bottom coverstitch machine)   MF-7823U10B56 Seam quality, functions and performance have been totally renewed. MF-7800 series is newly launched! MF-7823U10B56 MF-7823K10B56 The machine produces seams, which match materials and thread with consistency. Seams can be adjusted depending on the application or material by changing the thread path or adjusting the thread tension controller, to produce soft and low-tensed seams for inner wear or to produce high-grade well-tensed seams for outer wear.       Optimization of the thread take-up mechanism and top covering thread path route The optimized thread take-up mechanism and top covering thread path route contribute to an increased stability of top covering stitches. In addition, the machine is capable of performing sewing with a low tension applied to the thread to offer improved responsiveness to the sewing thread. Simple maintenance mechanism The machine is provided with a variety of mechanisms, which have been developed in consideration of production sites. The mechanisms can be easily maintained, contributing to increased production efficiency.               Looper thread twining prevention mechanism The looper thread cam has been provided with a thread wrapping prevention device. In the event that thread becomes wrapped around the cam, the bracket can be removed with ease. Looper shaft thread tangling prevention mechanism The end face of the looper cam and the looper thread bushing overlap so as to prevent looper thread from tangling in the looper shaft. The prevention mechanism also protects the oil seal from breakage. Needle bar stroke conversion mechanism The needle bar stroke can be increased by changing the position of the eccentric pin to smoothly sew heavy-weight materials. The troublesome replacement of parts, which is conventionally associated with needle-bar-stroke changing work, is no longer required. (standard setting at the time of delivery: 31mm, for sewing heavy-weight materials: 33mm ) The machine is applicable to an increased variety of sewing items The machine comes with a differential-feed micro-adjustment mechanism and micro-lifter mechanism. With these mechanisms, the machine is able to sew almost all kinds of sewing products, such as foundations, light-weight underwear and heavy-weight fleece, increasing the number of sewing items. Sewing products are no longer stained with oil A forced circulation mechanism has been introduced into the cylinder unit to prevent sewing products from being stained with oil. The mechanism is effective in eliminating oil stains. Comfortable working space A longer distance from machine arm to needle helps reduce operator stress during the covering process. In addition, the cylinder, the length of which is ideally suited to the hemming process and offers good operability, helps create a comfortable working space. The machine has been developed to achieve low-noise and low-vibration operation to offer an operator-friendly work environment.