A magnet cradle for supporting a permanent magnet in an overhung recessed slot
on the surface of a permanent magnet rotor having an axis of rotation. The cradle
is non-magnetic and comprises a top and bottom wall abutting the permanent magnet.
The cradle is sized to hold the permanent magnet within the overhung slots. Axial
end walls generally perpendicular to the axis of rotation have circumferential
edges configured to directly abut overhung portions of the slots. The total axial
length of the top and bottom walls of the cradles in the axial direction are greater
that the total axial length of the magnet, thereby permitting a magnet to fit between
the axial end walls of the cradle without the cradle in the magnetic flux path
of the magnet.