Miniature Bearing FeaturesMiniature Bearings can sustain some axial load in either direction as well as radial loads,And the two raceway cross-sections are simple circular arcs which can be very precisely finished so the bearings have low friction and very little noise or vibration.TECHNICAL SPECS (metric):Bearing type: ShieldBore diameter: 8.000 mmOuter diameter: 22.000 mmWidth (B): 7.000 mmRadius (min) (): 0.30 mmDynamic load rating (Cr): 2,799 NStatic load rating (Cor): 1,103 NMax speed (Grease): 34,000 rpmMax speed (Oil): 40,000 rpmMax. shaft shoulder dia, inner (Ui): 10.5 mmMin. housing shoulder dia, outer (Uo): 19.03 mmBall quantity: 7Ball diameter (Dw): 3.969 mmPrecision: ABEC-5Standard clearance: C0/(K25)This Bearing StructureStandard Type: A ball bearing is composed of an outer and inner ring, balls, seal and a retainer.Open type will no seal,Flanged type with flange side.Colour: silverMaterial: 52100 chrome steelPackage Contents:80 x BearingsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.