Miniature Ball Bearing Bearing Industry Number 693 Bore Diameter 3 mm Closure Double Shielded Outer Ring Width 4 mm Outside Diameter 8 mm Ring Material Stainless Steel System of Measurement Metric Cage Material Steel Cage Type Crown Ribbon Dynamic Radial Load Capacity 559 N Fillet Radius 0.15 mm Finish Chrome Plated Flange Diameter 9.5 mm Flange Type Non-Flanged Includes Retaining Ring No Lubricant Material Grease