wire jump prevente：The wire jump preventer (wire roller-NT series) is used for a radical change of direction and adequate guidance and prevent the wire jumping during the winding process. The precision ceramics circle inside has an ultra-fine polishing degree Ra0.2. There is a high-speed bearing in this porcelain circle which can control the sliding distance between enameled wire and the circle under 0.2mm, protect the film and assure the beating of the enameled wire in a very small scope to stabilized the tension.