NJ311EGBNLS Nachi Cylindrical Roller Bearing 55mm x 120mm x 29mm Nylon Cage Made in Japan NJ311EGBNLS Nachi Cylindrical Roller Bearings, Nylon Cage, Made in Japan, the NJ311EGBNLS inner diameter is 55mm, the NJ311EGBNLS outer diameter is 120mm, NJ311EGBNLS width is 29mm.