Radial Ball Bearing, Bearing Industry Number 6309, Bore Diameter 45 mm, Closure Open, For Environment Oily/Greasy, Outer Ring Width 25 mm, Outside Diameter 100 mm, Ring Material Alloy Steel, System of Measurement Metric, Cage Material Steel, ABEC Rating 1, Ball Material Alloy Steel, Ball Material Grade AISI 52100, Bore Diameter Tolerance +0/-0.012 mm, Dynamic Radial Load Capacity 11,900 lbf, Includes Retaining Ring No