Radial Ball Bearing, Bearing Industry Number 6304, Bore Diameter 20 mm, Closure Open, Outer Ring Width 15 mm, Outside Diameter 52 mm, Ring Material Alloy Steel, System of Measurement Metric, Cage Material Steel, ABEC Rating 1, Ball Material Alloy Steel, Bore Diameter Tolerance +0/-0.012 mm, Cage Type Pressed, Dynamic Radial Load Capacity 17,600 N, Fillet Radius 1.1 mm, Finish Chrome Plated, Includes Retaining Ring No, ISO Rating Class 0, Lubricant Material Not Available