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Electromagnetic Clutches

A clutch is a mechanical device used to transmit force from one mechanism to another. Typically rotating, the clutch component is engaged by moving it into a contact position with the mechanism that is being driven. In an electromagnetic clutch, a magnetic field is created and used to pull the armature component into the rotor component. When the air gap between these two components is closed, the electromagnetic clutch is engaged and the rotation in the driven mechanism is started. The strength of the magnetic attraction and the friction between the two components then transmits torque through the clutch.