To provide an electromagnetic spring clutch superior in the productivity and capable of reducing the manufacturing cost.

In this electromagnetic spring clutch comprising a first rotating shaft 26 rotatably inserted into an armature 38, a second rotating shaft 34 coaxial with the first rotating shaft and rotatably mounted, and a coil spring 40 mounted over outer peripheries of the first rotating shaft and the second rotating shafts, locked on the armature at its one end and on the second rotating shaft at the other end, integrally rotating the first rotating shaft and the second rotating shaft by being tightened when the armature is moved to be abutted on a contact part and is braked, in a state of energizing the electromagnetic coil 10, and releasing the integral rotation of the first rotating shaft and the second rotating shaft in being loosened by separating the armature from the contact part and releasing the braking in a state of not being energized, a bearing part 22 externally and cylindrically projecting by a desired length for bearing the first rotating shaft is integrally formed on a field core 16.