Radial Ball Bearing, Bearing Industry Number 1657, Bore Diameter 1 1/4 in, Closure Double Shielded, For Environment Oily/Greasy, Outer Ring Width 0.687 in, Outside Diameter 2 9/16 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/-0.00045 in, Dynamic Radial Load Capacity 3,369 lbf, Includes Retaining Ring No, Lubricant Material Polyrex EM