... 1.High precision & quality 2.ISO 9001 certified 3.Stable in chemical Deep groove ball bearing RLS,long life and low noise ... .65≤0.10≤0.025≤0.25≤0.25≤0.3 GCr15 bearing steel compare to same standard code: ChinaISOAISIDINJISSKFGCr15693/XVII52100100Cr6SUJ2SKF3Comparison ... ,RS, 2RS 2) Clearance: C0, C2, C3 3) Precision Tolerance: ABEC-1 (P0), ABEC-3 (P6), ABE C-5(P5)4) Noise ...