Experimental Analysis for the Axial Force and Pull-out Torque of Disc type Permanent Magnetic Coupling

This paper presents the pull-out torque and axial force analysis of a disc type permanent magnetic coupling under steady state. This magnetic coupling employ rear-earth permanent magnets. The pull-out torque and axial force of magnetic calculated by changing the air-gap between two disc as a function of geometrical parameters. And its shows that if length of air-gap is increases pull-out torque and axial force is decreases. The experimental analysis results are verified by carrying out measurement on a prototype