At EMCC/Thistle Industries, we manufacture and supply more V-Ring Commutators than any other type of Commutator.

Most commonly, our Commutators are used in the manufacture, repair and rewinding of DC Generators and Motors. V-ring Commutators are composed of copper bars and a steel core that is insulated and electrically isolated from each other by segments of mica. Insulated steel V-rings are forced together under pressure on the dovetails machined into the commutator. Nuts or bolts are then tightened on the steel hub while under intense pressure – Therefore,  locking the copper mica assembly in place on the insulated steel core.

The bar segments of our Commutators are made of high silver content copper alloy (for better conductivity) and are separated from each other by high-quality mica insulation that remains stable with heated temperature and compression. Slots are expertly cut in the riser based on your coil specifications.

Our V-ring commutators come in a wide variety of types and sizes. Some V-ring commutators may have an inserted riser with a vented steel core, while others may have a stepped bore with a key-way alignment. Often, molded commutators are re-engineered and converted into a v-ring style Commutator with a re-usable steel core. Having a re-usable steel core allows for more economical repairs and replacements (Commutator Refill) in the future.