Miniature Ball Bearing Bearing Industry Number 606 Bore Diameter 6 mm Closure Double Shielded For Environment Oily/Greasy Outer Ring Width 6 mm Outside Diameter 17 mm Ring Material Alloy Steel System of Measurement Metric ABEC Rating 1 Ball Material Alloy Steel Ball Material Grade AISI 52100 Bore Diameter Tolerance +0/-0.008 mm Cage Type Shielded Dynamic Radial Load Capacity 7 870 lbf Flange Type Non-Flanged Includes Retaining Ring No Lubricant Material Polyrex EM