Lovejoy 69790441310 Steel HercuFlex FX Series 41310 FX 3.5EM Hub, Rigid, 2-11/16" Bore, 6.87" OD, 4.19" Length Through Bore, 5/8" x 5/16" Keyway, 203500 Inch Pounds Item Torque

                The Hercuflex coupling has increased nominal torque, larger maximum bore size and longer service life. It is interchangeable with standard AGMA flange interface.