Agricultural Disc Bearing Bore Shape Round Bore Size 2.187 in Ball Material Steel Flange Type Flanged Housing Material Alloy Steel Outside Diameter 5.5 in Overall Width 2.187 in System of Measurement Inch Closure Double Sealed ABEC Rating 1 Application Severe Tillage Bearing Industry Number FD211RBA Bolt Circle Diameter 5 1/2 in Bore Size Tolerance +/-0.0006 in Cage Material Nylon Dynamic Radial Load Capacity 9 800 lbf Finish Silver Plated Flange Size 5 1/2 in