Miniature Ball Bearing Bearing Industry Number MR74 Bore Diameter 4 mm Closure Double Shielded Outer Ring Width 2.5 mm Outside Diameter 7 mm Ring Material Stainless Steel System of Measurement Metric Cage Material Steel Cage Type Crown Dynamic Radial Load Capacity 255 N Fillet Radius 0.1 mm Finish Chrome Plated Flange Diameter 8.2 mm Flange Type Non-Flanged Includes Retaining Ring No Lubricant Material Grease