Now we are able to produce small electric rotors for e.g. servo steering in-house.Such rotors can be sleeved (Inconel, glass fibre, etc) to keep the magnets mechanically on the rotor. The rotors can also be mechanically balanced to meet customer anti-vibration requirements (to minimise bearing wear for example).
We will analysis quality issues possibilities include:
Pole angle deviations
Skewing angle deviations
Pole peak inhomogeneity
Noise problems (harmonics)