Radial Ball Bearing Bearing Industry Number 1602 Bore Diameter 1/4 in Closure Double Shielded For Environment Oily/Greasy Outer Ring Width 0.25 in Outside Diameter 11/16 in Ring Material Alloy Steel System of Measurement Inch Cage Material Steel ABEC Rating 1 Ball Material Alloy Steel Ball Material Grade AISI 52100 Bore Diameter Tolerance +0/-0.0003 in Dynamic Radial Load Capacity 491 lbf Includes Retaining Ring No Lubricant Material Polyrex EM