Radial Ball Bearing Bearing Industry Number 61903 Bore Diameter 17 mm Closure Double Sealed For Environment Caustic Chemical Food and Beverage Pharmaceutical Poultry Outer Ring Width 7 mm Outside Diameter 30 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/-0.008 mm Cage Material Grade 304 Dynamic Radial Load Capacity 1 045 lbf