23122EW33K Nachi Spherical Roller Bearing Bronze Cage : Tapered Bore Made in Japan 23122EW33K Nachi Spherical Roller Bearings, Bronze Cage, the bearing has a tapered inner ring bore (K), Made in Japan, the 23122EW33K inner diameter is 110mm, the 23122EW33K outer diameter is 180mm and the 23122EW33K width is 56mm.