Radial Ball Bearing Bearing Industry Number 61906 Bore Diameter 30 mm Closure Double Sealed For Environment Caustic Chemical Food and Beverage Pharmaceutical Poultry Outer Ring Width 9 mm Outside Diameter 47 mm Ring Material Stainless Steel Seal Type Contact System of Measurement Metric Cage Material Stainless Steel ABEC Rating 1 Ball Material Stainless Steel Bore Diameter Tolerance +0/-0.01 mm Cage Material Grade 304 Dynamic Radial Load Capacity 1 630 lbf