21315EXW33 Nachi Spherical Roller Bearing Steel Cage 75mm x 160mm x 37mm Made in Japan 21315EXW33 Nachi Spherical Roller Bearings, Steel Cage, Made in Japan, the 21315EXW33 inner diameter is 75mm, the 21315EXW33 outer diameter is 160mm and the 21315EXW33 width is 37mm.