... , Z, ZZ, RS, 2RS, 2RZ 7. Internal clearance: C2, C3, C4 ,C5 DESIGN CLASSIFICATION1.Double row spherical roller bearing and single ... for the identifiled axial degree errors5.With C2,CN,C3,C4 and C5 iternal clearancePRODUCT ADVANTAGE OF TOWE1.Pure bearings steel ... .Better surface finish for raceway (fewer wear,lower operation temperture) Super Quality Good Price Aligning Ball Bearing 2211