Active part of an electrical machine, radial magnetic bearing and method for producing a radial magnetic bearing

An electrical machine, constructed in the form of a linear motor or as a rotor-based electric motor and comprising an active part including plural teeth, each of the teeth having a tooth base and a tooth height, with a slot being defined between each of adjacent ones of the teeth, said tooth base having an outer surface from which in a direction along the teeth an active part thickness is defined that is greater than the tooth height, a winding placed into the slot and configured to surround at least one of the adjacent teeth, a first material having a first magnetic permeability in an area from the tooth base to a first limit depth which is essentially half as great as the tooth height, and a second material having a second magnetic permeability in an area beyond the limit depth, wherein the first magnetic permeability is greater than the second magnetic permeability.

A radial magnetic bearing, comprising:

• an active part including plural teeth, each of the teeth having a tooth base and a tooth height, with a slot being defined between each of adjacent ones of the teeth, said tooth base having an outer surface from which in a direction along the teeth an active part thickness is defined that is greater than the tooth height, a winding placed into the slot and configured to surround at least one of the adjacent teeth, a first material having a first magnetic permeability in an area from the tooth base to a first limit depth which is essentially half as great as the tooth height, and a second material having a second magnetic permeability in an area beyond the limit depth, wherein the first magnetic permeability is greater than the second magnetic permeability, said active part being embodied as a hollow cylindrical stator, with the tooth base of each of the teeth pointing radially inwards relative to the hollow cylinder.