Sleeve Coupling Flange Coupling Size 3 Maximum Speed 9 200 RPM Maximum Torque 78 in-lb Outside Diameter 2 1/16 in Bore Type Round Keyed Hub Diameter 1 1/2 in Hub Material Carbon Steel For Bushing Size Not Applicable Bore Diameter 7/8 in Length through Bore 51/64 in System of Measurement Inch Hub Body Length 13/32 in Hub Type Flange Hub Application Compressors Conveyors Motors Pumps Bore Tolerance +0.0005 in / +0.0015 in