Miniature Ball Bearing Bearing Industry Number 1810 Bore Diameter 5/16 in Closure Double Shielded Outer Ring Width 0.156 in Outside Diameter 1/2 in Ring Material Stainless Steel System of Measurement Inch ABEC Rating 1 Cage Type Shielded Dynamic Radial Load Capacity 90 lbf Flange Diameter Not Applicable Flange Thickness Not Applicable Flange Type Non-Flanged Includes Retaining Ring No Lubricant Material Multitemp Grease