23028EW33K Nachi Spherical Roller Bearing Bronze Cage : Tapered Borebr Made in Japan 23028EW33K Nachi Spherical Roller Bearing, Bronze Cage, the bearing has a tapered inner ring bore (K), Made in Japan, the 23028EW33K inner diameter is 140mm, the 23028EW33K outer diameter is 210mm and the 23028EW33K width is 53mm.