... by low friction.They are always interference fitted on roll necks especially application to rolling machineswhich rolling at a ... ,NU...V,NNU,NNCF,NNCL, NNCS,FC,FCD,FCDP...2. Material: Gcr153. Retainer: J, K, M, MA, MB, ML, MP ... engines, gas turbines, machine tool spindles, deceleration devices, and material handling machinery and various types of industrial machinery.7. Packing: individual ...