SL Cylindrical Roller Bearings 1.standard ISO9001 2.Id size ... E behind the basic type is divided into other bearing.SL Cylindrical Toller BearingsSL Cylindrical Roller Bearings are heavy series full ... . There are two types: one has unfixed end (Series SL 01 and Series SL04), The other has fixed end (Series ... machinery, vehicle, steel and iron and take up machinery. SL Cylindrical Roller Bearings