Radial Ball Bearing, Bearing Industry Number 6211, Bore Diameter 55 mm, Closure Double Sealed, Outer Ring Width 21 mm, Outside Diameter 100 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/-0.012 mm, Dynamic Radial Load Capacity 10,400 lbf, Includes Retaining Ring No, Lubricant Material MT47 Grease