21312 SKFSelf-aligning roller bearing 1.Reference price:US$1.5-50 2.ISO: 9001:2000&SGS 3.OEM services 4.Quick delivery 21312 SKF/FAG Self-aligning roller bearing 1.Types:238series,248series,239series,230series,240series,231,241,222,232series,etc.2. Material:Gcr15-China,(AISI)52100-USA,(DIN)100CR6-Germany3. Retainer: J, K, M, MA, MB, k,4. Clearance: CN, C2, C3, C4, C55 .Precision level: ABEC-1, ...