Quote:
Originally Posted by Al Skierkiewicz
Issac,
The clutch you linked to specifically discusses the attraction of an armature plate by the magnetic field set up when the field coil is energized. It attracts the armature to a frictional coupling with the driver mechanism. This is exactly what an electric solenoid actuator is and therefore must conform to the solenoid rule, 10 watts @ 12 volts continuous. This is much different than an eddy current clutch where no parts move and no friction is used in the transfer of power.
|
There might be a distinction. I believe that in a solenoid actuator (of the conventional commercial type) the axis of the wrapped wire coil (not the wire itself) is coincident with the central axis of the armature (generally a shaft or similar). The armature moves within the central void.
In this design, it looks like the coil might be instead wrapped around a circular axis (i.e. toroidally). In that case, the armature is not moved within the centre of the coil. It wouldn't be a solenoid (even a toroidal one, if that's even possible), because there is no open core within the windings of the coil.
I can't tell exactly what's going on the diagrams, but here's another cutaway for comparison:
Scag Power Equipment