1. NN Series Cylindrical roller bearings 2. NN3026 (d*D*B): ... brands: ZWZ, HRB, LYC etc2.Double Row NN,NNU Series cylindrical roller bearing: NN 3005 K/SPNNU 4920 BK/SPW33NNU ... row Cylindrical roller bearings with cage type4. Single row full complete cylindrical roller bearings, mainly NCF, NJG designs5. Double row ... bearings, four or eight row of rollers. NN Series Cylindrical Roller Bearing nn3026