... .ISO 9001 certified 3.Low noise,Stable in chemicals High precision pillow block bearing Material: chrome steel STEEL NO.COMPONENTCSiMnCrMoPS CuNiGCr150.95 ... Bearing Precision Standard codePrecision gradeGB0654ISO0654DINP0P6P5P4JIS0654ANSIABEC-1ABEC-3ABEC-5ABEC-7Series: UCP Series bearingSpecification:1) Open, Z, ZZ, RZ,2RZ,RS, 2RS 2 ...