double row cylindrical roller bearing 1,ABEC-3 ... cover:ZZ,RS 4,Noise level:Z1,Z2 double row cylindrical roller bearing is in line contact with ... as types of single, double and multiple rows among which the single row cylindrical roller bearings are most ... , electricity generators, internal combustion engines, gas turbines, machine tool spindles, deceleration devices, unloading and lifting machines ...