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MF-7900 Series
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MF-7900 Series
High-speed, Cylinder-bed, Top and Bottom Coverstitch Machine (universal type)
The MF-7900 Series is a newly developed coverstitch machine provided with lots of mechanisms for improving the seam quality.
Contact Agent
See Series Specification (20)
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Seam quality is improved
Simplified maintenance mechanism
Product overview
It is provided with many different sewing-related mechanisms which contribute to improved seam quality, such as the new feed mechanism, and differential-feed
micro-adjustment mechanism. In addition, the machine is provided as standard with
a looper thread twining prevention mechanism for improved maintenance.
Seam quality is improved!!
Thanks to the new feed mechanism, many different types of sewing are achieved.
The feed locus can be adjusted externally. The feed locus is now adjustable in terms of the vertical direction and horizontal direction, thereby improving responsiveness to sewing materials.
Micro-lifter mechanism
Elastic material or delicate material can be sewn with the presser foot kept slightly raised. This effectively helps reduce the degree of slippage, warpage and damage of the material.
Differential-feed micro-adjustment mechanism
It is possible to finely adjust the differential feed amount to a best-suited value for the material to be used.
The differential feed ratio is constant even if the stitch length is changed.
Simplified maintenance mechanism
The looper thread twining prevention mechanism has been improved and is provided as standard for the sewing machine.
In the case of looper thread breakage, the looper thread twining prevention mechanism is activated to trim the looper thread before the thread twines on the looper thread cam. In this way, the looper thread twining prevention mechanism prevents the looper thread from twining on the looper thread cam. In addition, the looper thread cam, which has been incorporated in the sewing machine, has been changed so that it is mounted outside of the sewing machine. The externally-mounted looper thread cam promises improved maintainability.
Commercially-available gauge components are applicable with no additional work.
As a result of the commonality of components, commercially-available components (presser foot, throat plate and needle clamp) are now applicable and easily obtainable.
All of the sewing machines with a thread trimmer are provided with a direct-drive motor.
The direct-drive motor system has been adopted by all of the sewing machines with a thread trimmer. As a result, the sewing machine starts up swiftly and promises increased stop accuracy, thereby demonstrating improved responsiveness. In addition, the machine is no longer provided with a V-belt. This means that the adoption of the direct-drive motor is also effective in the elimination of belt shavings. Power is directly transmitted from the motor to the sewing machine, thereby contributing to reduced power consumption. (This sewing machine reduces power consumption by 27% as compared with the conventional models.)
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MF-7900 Series
- Leaflet (pdf)
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Apparel Sewing machines

MF-7900 Series

High-speed, Cylinder-bed, Top and Bottom Coverstitch Machine (universal type)

The MF-7900 Series is a newly developed coverstitch machine provided with lots of mechanisms for improving the seam quality.

Seam quality is improved
Simplified maintenance mechanism
Product overview
It is provided with many different sewing-related mechanisms which contribute to improved seam quality, such as the new feed mechanism, and differential-feed
micro-adjustment mechanism. In addition, the machine is provided as standard with
a looper thread twining prevention mechanism for improved maintenance.
Seam quality is improved!!
Thanks to the new feed mechanism, many different types of sewing are achieved.
The feed locus can be adjusted externally. The feed locus is now adjustable in terms of the vertical direction and horizontal direction, thereby improving responsiveness to sewing materials.
Micro-lifter mechanism
Elastic material or delicate material can be sewn with the presser foot kept slightly raised. This effectively helps reduce the degree of slippage, warpage and damage of the material.
Differential-feed micro-adjustment mechanism
It is possible to finely adjust the differential feed amount to a best-suited value for the material to be used.
The differential feed ratio is constant even if the stitch length is changed.
Simplified maintenance mechanism
The looper thread twining prevention mechanism has been improved and is provided as standard for the sewing machine.
In the case of looper thread breakage, the looper thread twining prevention mechanism is activated to trim the looper thread before the thread twines on the looper thread cam. In this way, the looper thread twining prevention mechanism prevents the looper thread from twining on the looper thread cam. In addition, the looper thread cam, which has been incorporated in the sewing machine, has been changed so that it is mounted outside of the sewing machine. The externally-mounted looper thread cam promises improved maintainability.
Commercially-available gauge components are applicable with no additional work.
As a result of the commonality of components, commercially-available components (presser foot, throat plate and needle clamp) are now applicable and easily obtainable.
All of the sewing machines with a thread trimmer are provided with a direct-drive motor.
The direct-drive motor system has been adopted by all of the sewing machines with a thread trimmer. As a result, the sewing machine starts up swiftly and promises increased stop accuracy, thereby demonstrating improved responsiveness. In addition, the machine is no longer provided with a V-belt. This means that the adoption of the direct-drive motor is also effective in the elimination of belt shavings. Power is directly transmitted from the motor to the sewing machine, thereby contributing to reduced power consumption. (This sewing machine reduces power consumption by 27% as compared with the conventional models.)
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