Radial Ball Bearing Bearing Industry Number 63311 Bore Diameter 55 mm Closure Double Sealed Outer Ring Width 49.2 mm Outside Diameter 120 mm Ring Material Alloy Steel Seal Type Non-Contact System of Measurement Metric Cage Material Steel ABEC Rating 1 Ball Material Alloy Steel Bore Diameter Tolerance +0/-0.015 mm Cage Type Pressed Dynamic Radial Load Capacity 90 500 N Fillet Radius 2 mm Finish Chrome Plated Includes Retaining Ring No ISO Rating Class 0