Radial Ball Bearing, Bearing Industry Number 6308, Bore Diameter 40 mm, Closure Double Shielded, Outer Ring Width 23 mm, Outside Diameter 90 mm, Ring Material Alloy Steel, 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 64,400 N, Fillet Radius 1.5 mm, Includes Retaining Ring No, Lubricant Material Quaker Ferrocote