Miniature Ball Bearing Bearing Industry Number MR137 Bore Diameter 7 mm Closure Double Shielded Outer Ring Width 4 mm Outside Diameter 13 mm Ring Material Stainless Steel System of Measurement Metric Cage Material Steel Cage Type Crown Dynamic Radial Load Capacity 541 N Fillet Radius 0.15 mm Finish Chrome Plated Flange Diameter 14.6 mm Flange Type Non-Flanged Includes Retaining Ring No Lubricant Material Grease