23136EW33K Nachi Spherical Roller Bearing Bronze Cage : Tapered Bore Made in Japan 23136EW33K Nachi Spherical Roller Bearings, Bronze Cage, the bearing has a tapered inner ring bore (K), Made in Japan, the 23136EW33K inner diameter is 180mm, the 23136EW33K outer diameter is 300mm and the 23136EW33K width is 96mm.