Radial Ball Bearing Bearing Industry Number 1620 Bore Diameter 7/16 in Closure Double Sealed For Environment Oily/Greasy Outer Ring Width 0.437 in Outside Diameter 1 3/8 in Ring Material Alloy Steel Seal Type Contact 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 1 525 lbf Includes Retaining Ring No Lubricant Material Polyrex EM