Miniature Ball Bearing Bearing Industry Number R155 Bore Diameter 5/32 in Closure Double Shielded Outer Ring Width 0.125 in Outside Diameter 5/16 in Ring Material Stainless Steel System of Measurement Inch Cage Material Steel Cage Type Crown Dynamic Radial Load Capacity 80.71043 lbf Fillet Radius 0.0039 in Finish Chrome Plated Flange Type Non-Flanged Includes Retaining Ring No Lubricant Material Grease