... ZZ,RS 4,Noise level:Z1,Z2 four row cylindrical roller bearings is in line contact with the raceway, so the ... rows among which the single row cylindrical roller bearings are most applicable. Normally these bearings can accommodate radial load only, none but ... &3 Holes in Outer Ring Structure Cylindrical roller bearings N series,NU series,NF series,NUP series Features heavy radial load,heavy shock load, ...