Abstract: The electromagnetic clutch (X) includes a rotating shaft (1): a magnetic pole body (2) and a rotor (3) disposed to face each other along an axial direction of the rotating shaft (1); and an armature (4) capable of moving in a direction attachable to or detachable from the rotor (3) along the axial direction of the rotating shaft and forming a magnetic circuit with the magnetic pole body and the rotor. The armature is moved in the axial direction of the rotating shaft by electromagnetic suction force to press the rotor when an exciting coil (21) is in an excitation state. The rotating shaft is configured by an input side shaft portion (11) which is a non-magnetic body and formed of a material having enough strength to support rotation of the rotor and the armature; and an output side shaft portion (12) which is a magnetic body.

Abstract: The electromagnetic clutch (X) includes a rotating shaft (1): a magnetic pole body (2) and a rotor (3) disposed to face each other along an axial direction of the rotating shaft (1); and an armature (4) capable of moving in a direction attachable to or detachable from the rotor (3) along the axial direction of the rotating shaft and Ruining a magnetic circuit with the magnetic pole body and the rotor. The armature is moved in the axial direction of the rotating shaft by electromagnetic suction force to press the rotor when an exciting coil (21) is in an excitation state. The rotating shaft is configured by an input side shaft portion (11) which is a non-magnetic body and formed of a material having enough strength to support rotation of the rotor and the armature; and an output side shaft portion (12) which is a magnetic body.