Temps on the motor shaft?

[zeropointbug]

Yeah, the rotor is almost always hotter than the stator is. These are eddy currents in the magnet caused by the switching coils. The Lehners and Neu won't (in theory) get as hot a rotor as Feigaos.

Preferably, if it could be done, would make very thin laminations for the magnets, to almost get rid of this completely.