23188EW33 Nachi Spherical Roller Bearing Bronze Cage 440mm x 720mm x 226mm Made in Japan 23188EW33 Nachi Spherical Roller Bearings, Bronze Cage, Made in Japan, the 23188EW33 inner diameter is 440mm, the 23188EW33 outer diameter is 720mm and the 23188EW33 width is 226mm.