Radial Ball Bearing, Bearing Industry Number 61809, Bore Diameter 45 mm, Closure Double Sealed, For Environment Oily/Greasy, Outer Ring Width 7 mm, Outside Diameter 58 mm, Ring Material Alloy Steel, Seal Type Contact, System of Measurement Metric, Cage Material Steel, ABEC Rating 1, Ball Material Alloy Steel, Ball Material Grade AISI 52100, Bore Diameter Tolerance +0/-0.012 mm, Dynamic Radial Load Capacity 1,419 lbf, Includes Retaining Ring No, Lubricant Material Polyrex EM