Retained type bearings (BR) has integral flanges on the outer race to provide a surface for axial load. This axial load is accommodated on the inner race via the hardened clamp rings, which both align the inner race halves and provide roller guidance. In larger bearings the inner race is manufactured with integral ribs for roller guidance and axial load. Timken® Revolvo Split Cylindrical Roller Bearing, Retained Imperial, Series: Light, 7-1/2 in Bore Dia, 12-1/4 in Outside Dia, 4.291 in Width, 9217 lb Axial/138033 lb Dynamic/222561 lb Static, Brass Cage, 1070 RPM Maximum, 284 °F