Product Name: linear column ball bearing Model: TCS8 Material: #45C hardness:HRC60±2 precision:g6 rough:less than 1.5μm(Rmax) harden part:0.8 0.3mm Diameter:6 60mm length:100mm 6000mm Cylindricity :less than 5μm by 500mm circule:less than 3 5μm Remark:we have provision of threading,radial holes drilled and tapped andso on