Radial Ball Bearing, Bearing Industry Number 6306, Bore Diameter 30 mm, Closure Open, 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, Bore Diameter Tolerance +0/-0.007 mm, Dynamic Radial Load Capacity 29.6 kN, Fillet Radius 1 mm, Includes Retaining Ring No, Lubricant Material MT47 Grease