Pillow Blocks 1.High precision & quality 2.ISO 9001 certified 3 ... STEEL NO.COMPONENTCSiMnCrMoPS CuNiGCr150.95~1.050.15~0.350.25~0.451.40~1.65≤0.10≤0.025 ... Standard codePrecision gradeGB0654ISO0654DINP0P6P5P4JIS0654ANSIABEC-1ABEC-3ABEC-5ABEC-7Series: UCP Series bearingSpecification:1) Open, Z, ZZ, RZ,2RZ,RS, 2RS 2) ... Clearance: C0, C2, C3 3) Precision Tolerance: ABEC-1 (P0), ABEC-3 (P6), ABE C-5(P5)4) ...