Sleeve Coupling Spacer Flange Coupling Size 9 Maximum Speed 3 750 RPM Maximum Torque 2 340 in-lb Outside Diameter 6 11/32 in Bore Type Not Applicable Hub Diameter 5 1/4 in Hub Material Cast Iron For Bushing Size Not Applicable Bore Diameter Not Applicable Length through Bore 3 3/4 in System of Measurement Inch Hub Body Length 2 1/8 in Application Compressors Conveyors Motors Pumps Bore Tolerance Not Applicable