1.High quality, high precision, OEM service 2.Competitive price 3.Prompt delivery 4.High speed, low voice skf cylindrical roller bearing NJ2051.Types:Nseries,NNseries,NUseries,,NJseries,NUPseries,NCFseries,etc.2. Material: Gcr15-China, (AISI) 52100-USA, (DIN) 100CR6-Germany3. Retainer: J, K, M, MA, MB, ML, MP, MR4. Clearance: CN, C2, C3, C4, C55. Precision level: ABEC-1, ABEC-3, ABEC-5 Our ...