Manufacturing technologies for commutators
The glassband technology is much more modern than the one used in the V-Ring version, and consists of fibre glass band mixed with resins that polymerize over certain temperatures to give resistances which can be compared to the one of steel. This technique is used for special series of industrial commutators or on request. The copper body held together by the banding is normally shrunk onto an insulated steel body to give a single compact piece which can reach high rotation speeds even for very long commutators.
2. WITH FLAG RISERS
3. JOINED COPPER SEGMENTS