Tapered roller bearings utilize conical rollers and raceways, arranged so that the rollers and raceways meet at a common apex. The rollers are guided by contact between the large end of the roller and a rib on the inner ring. This provides high capacity for radial and single thrust loads. NTN Tapered Roller Bearing, Round Bore, 220 mm Bore Dia, 400 mm Outside Dia, 2 Rows, 158 mm W, Open Closure, 2440000 N, Through Hardened Steel Bearing