Radial Ball Bearing, Bearing Industry Number 6306, Bore Diameter 30 mm, Closure Double Shielded, For Environment Oily/Greasy, Outer Ring Width 19 mm, Outside Diameter 72 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/- 0.1 mm, Dynamic Radial Load Capacity 6, 000 lbf, Includes Retaining Ring No, Lubricant Material Polyrex EM. This item has been restricted from sale in the following state (s): []