four row cylindrical roller bearings 1,ABEC-3,5;Z2V2, ... ,End cover:ZZ,RS 4,Noise level:Z1,Z2 four row cylindrical roller bearings is in line contact with the ... single, double and multiple rows among which the single row cylindrical roller bearings are most applicable. Normally these bearings ... can accommodate radial load only, none but single row bearings with ribs both on inner and outer rings ...