21316EXW33 Nachi Spherical Roller Bearing Steel Cage 80mm x 170mm x 39mm Made in Japan 21316EXW33 Nachi Spherical Roller Bearings, Steel Cage, Made in Japan, the 21316EXW33 inner diameter is 80mm, the 21316EXW33 outer diameter is 170mm and the 21316EXW33 width is 39mm.