Ceramic roller bearing (Alumina ceramic roller) ceramic guide roller China supplier, China manufacturer. Coil winding wire guide pulley(Ceramic roller) is used for enamel insulated wire or silk thread appropriate amount guiding, the China circle makes from precise ceramics, the surface smoothness that the China marks with a circle reaches Ra 0.2, moves up and down when rotating being smaller than 0.15, material selects and uses 99%'s AL2O3, hardness HRa 88, density 3.85.
