Miniature Ball Bearing Bearing Industry Number R156 Bore Diameter 3/16 in Closure Open Outer Ring Width 0.109 in Outside Diameter 5/16 in Ring Material Stainless Steel System of Measurement Inch Cage Material Steel Cage Type Crown Dynamic Radial Load Capacity 80.93525 lbf Extended Inner Ring Yes Extended Inner Ring Width 0.125 in Fillet Radius 0.0039 in Finish Chrome Plated Flange Type Non-Flanged Includes Retaining Ring No Lubricant Material Oil