Miniature Ball Bearing Bearing Industry Number 607 Bore Diameter 7 mm Closure Double Sealed For Environment Oily/Greasy Outer Ring Width 6 mm Outside Diameter 19 mm Ring Material Alloy Steel Seal Type Contact 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 Sealed Dynamic Radial Load Capacity 525 lbf Flange Type Non-Flanged Includes Retaining Ring No Lubricant Material Polyrex EM