Sleeve Coupling Spacer Flange Coupling Size 8 Maximum Speed 4 500 RPM Maximum Torque 1 475 in-lb Outside Diameter 5 29/64 in Bore Type Not Applicable Hub Diameter 4 3/8 in Hub Material Cast Iron For Bushing Size Not Applicable Bore Diameter Not Applicable Length through Bore 2 3/8 in System of Measurement Inch Hub Body Length 11/32 in Application Compressors Conveyors Motors Pumps Bore Tolerance Not Applicable