1.Long Operating Life 2.High Speed 3.Material:Bearing/Chrome/Carbon/Stainless steel 4.d:10-900mm D:20-1200mm T:9-300mm Product Details MaterialChrome steel, Carbon steel, stainless steel, Bearing SteelSized: 10-900mm D:20-1200mmT:9-300mmCageD≤250mm steel punching cageD>250mm solid cageSeals typeOPENNumber of RowSingleFeatureDivided into unidirectional and bi-directional bearing, only can bear ...