Radial Ball Bearing, Bearing Industry Number 6304, Bore Diameter 20 mm, Closure Double Sealed, Outer Ring Width 15 mm, Outside Diameter 52 mm, Ring Material Alloy Steel, Seal Type Contact, System of Measurement Metric, Cage Material Steel, ABEC Rating 1, Application High Heat Application, Ball Material Alloy Steel, Bore Diameter Tolerance +0/-10 micron, Cage Type Pressed, Dynamic Radial Load Capacity 17,600 N, Fillet Radius 1.1 mm, Finish Chrome Plated, Includes Retaining Ring No