Miniature ball bearing 1.Material:GCr15,100Cr6,52100 2.Retainer:nylon cage,steel cage 3.Reliable quality Miniature ball bearingSpecifications:1) Shield / Seals: Open bearing, Z, ZZ, RS, 2RS3) Tolerance codes: ABEC-1, ABEC-3, P0,P6,P44) Vibration Value: V4, V3, V2, V15) Bearing Material: GCr15, 100Cr6, 52100,C457) Retainer: PTFE, nylon, PEEK or stainless steel Bearing No.Dimension (mm)shields(d) ...