... mill housing,rollers and rolling machines.Compared with other roller bearing,these bearing are characterized ... .EM double assembly machine process copper cage with outer ring or inner ring centered.2. ... EM pressed steel cage with rollers centered.3.EP-nylon cage with rollers centered.1. Typesof structure ... ,FCD,FCDP...2. Material: Gcr153. Retainer: J, K, M, MA, MB, ML, MP, MR4. Clearance: CN, C2 ...