Applied to enameled wire or thread proper guidance, including porcelain ring by the precision ceramic production, Ra0.2, groove precise polishing ceramic ring with high-speed bearing, on both sides of the baffle can prevent the enameled wire winding jump out of the trough, uniform during winding tension remained stable at the same time, also have directly by ceramic and high-speed bearing combination that ceramic ceramic roller. Applicable to various types of coiling machine and spinning and weaving machinery of the silk thread parts.