It is a non-contact type coupling that utilizes attraction and repulsion of the magnet and has no contact portion for power transmission, so there is no wear and dust generation of the parts, no noise, vibration and so on.The tolerance of eccentricity and declination in mounting is large, and attachment/detachment can be done very easily.Similar to the general coupling, it can be used as butting axis, as well as other types like parallel axis and orthogonal axis and etc.In addition, since power is transmitted by magnetic force, it can be used as bulkhead transmission and torque limiter function in case of overload.