Bearings, set of 2, mainshaft, roller + ball, for Norton twin cylinder engines. Blended roller brass caged ['partially crowned cylindrical rollers] (AKA Superblend). FAG NJ306E, C3 clearance + ball, for Norton twin cylinder engines, C3 clearance. Pre Superblend. RHP Made in England OR Nachi Made in Japan Original Part Number: D12/32, NM17822, 17822, 17824, NM17824, 062114, 062118 - Crankshaft bearing