Radial Ball Bearing Bearing Industry Number 6203 Bore Diameter 17 mm Closure Double Sealed Outer Ring Width 12 mm Outside Diameter 40 mm Ring Material Alloy Steel Seal Type Contact System of Measurement Metric Cage Material Steel ABEC Rating 1 Ball Material Alloy Steel Bore Diameter Tolerance +0/-0.008 mm Dynamic Radial Load Capacity 2 150 lbf Includes Retaining Ring No Lubricant Material Polyrex EM