21318EXW33 Nachi Spherical Roller Bearing Steel Cage 90mm x 190mm x 43mm Made in Japan 21318EXW33 Nachi Spherical Roller Bearing, Steel Cage, Made in Japan, the 21318EXW33 inner diameter is 90mm, the 21318EXW33 outer diameter is 190mm and the 21318EXW33 width is 43mm.