23134EW33K Nachi Spherical Roller Bearing Bronze Cage : Tapered Bore Made in Japan 23134EW33K Nachi Spherical Roller Bearings, Bronze Cage, the bearing has a tapered inner ring bore (K), Made in Japan, the 23134EW33K inner diameter is 170mm, the 23134EW33K outer diameter is 280mm and the 23134EW33K width is 88mm.