... roller's number for the different cage bearing . SL Cylindrical Roller Bearings are heavy series full complement double ... are two types: one has unfixed end (Series SL 01 and Series SL04), The other has fixed end ... productsdifferent sizesDrawn Cup Needle Roller BearingsHK, BK, HK-RS, HK-2RS, BK-RS, FFH, MFH, FY, MFY, HF, HFL, ... 49, NA 69, NA 48,RNA 49-RS, RNA 49-2RS, NA 49-RS, NA 49-2RS, NAO, RNAO, RNAV ...