double row cylindrical roller bearing 1,ABEC-3,5 ... End cover:ZZ,RS 4,Noise level:Z1,Z2 double row cylindrical roller bearing is in line contact with ... dismounted. They are designed as types of single, double and multiple rows among which the single row cylindrical ... in Outer Ring Structure Cylindrical roller bearings N series,NU series,NF series,NUP series Features heavy radial load,heavy shock load, ...