23130EW33K Nachi Spherical Roller Bearing Bronze Cage : Tapered Bore Made in Japan 23130EW33K Nachi Spherical Roller Bearings, Bronze Cage, the bearing has a tapered inner ring bore (K), Made in Japan, the 23130EW33K inner diameter is 150mm, the 23130EW33K outer diameter is 250mm and the 23130EW33K width is 80mm.