Sleeve Coupling Flange Coupling Size 5 Maximum Speed 7 600 RPM Maximum Torque 312 in-lb Outside Diameter 3 1/4 in Bore Type Round Keyed Hub Diameter 1 7/8 in Hub Material Carbon Steel For Bushing Size Not Applicable Bore Diameter 1 1/8 in Length through Bore 1 3/64 in System of Measurement Inch Hub Body Length 29/64 in Hub Type Flange Hub Application Compressors Conveyors Motors Pumps Bore Tolerance +0.0005 in / +0.0015 in