Lovejoy 69790442181 HERCUFLEX FX Series 42181 FX 4E Steel Rigid Hub, Length Through Bore 4.75", 2-7/8" Bore, 8.10" OD, 3/4" x 3/8" Keyway

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