Cmc commutator manufactures a wide range of slip rings for dc/ac machines. Slip rings are manufactured in epoxy moulded and fabricated/shrink-fit designs. These slip rings are manufactured by cmc commutator in a wide range of sizes for alternators, slip ring motors, crane duty motors, ac generators and other slip ring applications. Materials used for construction of slip rings from cmc commutator: rings are manufactured out of phosphorous bronze, cupronickel, gun metal, forged copper or stainless steel as required.