Sleeve Coupling Flange Coupling Size 11 Maximum Speed 3 600 RPM Maximum Torque 5 890 in-lb Outside Diameter 8 5/8 in Bore Type Round Keyed Hub Diameter 5 1/4 in Hub Material Cast Iron For Bushing Size Not Applicable Bore Diameter 2 1/8 in Length through Bore 3 7/16 in System of Measurement Inch Hub Body Length 1 1/8 in Hub Type Flange Hub Application Compressors Conveyors Motors Pumps Bore Tolerance +0.0005 in / +0.0020 in