This 47" diameter 468 bar glassband commutator has solid risers and operates in a 3200KW GE motor. Glassband commutators differ from V-rings as the retaining force is on the exterior via the resiglas bands. The material is made from high tensile glass yarns laid parallel and bonded with fully catalyzed thermosetting resins. The commutator is banded to an OEM specified number of wraps applied at >600 pounds. Once installed on the armature the bands should be coated with Viton® and/or Limitrac® which seals the seams between copper and banding. This ensures that carbon cannot infiltrate behind the bands, where they can burn from the inside out causing catastrophic failure.
