Ball bearings 1.Inner diameter: 1-100mm 2.Precision: P0 to P4 3.Bearing material: GCr15,100Cr6 Deep groove ball bearing 6300 series feature,please read IXIN pdf catalog for exact selection.Specifications:1) Shield / Seals: Open bearing, Z, ZZ, RS, 2RS3) Tolerance codes: ABEC-1, ABEC-3, P0,P6,P44) Vibration Value: V4, V3, V2, V15) GCr15, 100Cr6, 52100,C457) Retainer: PTFE, nylon, PEEK or stainless ...