Sleeve Coupling Flange, Coupling Size 8, Maximum Speed 4,500 RPM, Maximum Torque 1,475 in-lb, Outside Diameter 5 29/64 in, Bore Type Round Keyed, Hub Diameter 3 1/4 in, Hub Material Cast Iron, For Bushing Size Not Applicable, Bore Diameter 1 5/8 in, Length through Bore 2 3/32 in, System of Measurement Inch, Hub Body Length 3/4 in, Hub Type Flange Hub, Application Compressors, Conveyors, Motors, Pumps, Bore Tolerance +0.0005 in / +0.0015 in