23138EW33 Nachi Spherical Roller Bearing Bronze Cage 190mm x 320mm x 104mm Made in Japan 23138EW33 Nachi Spherical Roller Bearings, Bronze Cage, Made in Japan, the 23138EW33 inner diameter is 190mm, the 23138EW33 outer diameter is 320mm and the 23138EW33 width is 104mm.