... ,NCL...V,NB,NU...V,NNU,NNCF,NNCL, NNCS,FC,FCD,FCDP... 2. Material: Gcr15 3. Retainer: J, K, M, MA, MB ... -1,ABEC-3,ABEC-5 6. Main application: Cylindrical roller bearings is mainly used for medium and large motors, generators, internal combustion engines, gas turbines, machine ...