Lovejoy 69790441090 HERCUFLEX FX Series 41090 FX 3.5E Steel Rigid Hub, Length Through Bore 4.19", 4-13/16" Bore, 6.87" OD, 1-1/4" x 5/8" Keyway

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