SKF® manufactures super-precision angular contact ball bearings for shaft diameters from 6 to 360 mm. Application requirements vary, and as a result, the SKF® assortment of super-precision angular contact ball bearings includes four ISO dimension series, in numerous executions. The wide selection of designs and variants enables them to be incorporated into virtually every machine tool application as well as other applications where precision bearings are required. SKF® Angular Contact Ball Bearing, Super-Precision, 3.1496 in Bore Dia, 4.9213 in Outside Dia, 1 Rows, 0.8661 in Width, 15 °Contact, Phenolic Cage