Radial Ball Bearing Bearing Industry Number 6011 Bore Diameter 55 mm Closure Open For Environment Oily/Greasy Outer Ring Width 18 mm Outside Diameter 90 mm Ring Material Alloy Steel System of Measurement Metric Cage Material Steel ABEC Rating 1 Ball Material Alloy Steel Ball Material Grade AISI 52100 Bore Diameter Tolerance +0/-0.015 mm Dynamic Radial Load Capacity 6 350 lbf Includes Retaining Ring No